service manual gx-900 mini component system

Transcription

GX-900
MINI COMPONENT SYSTEM
GX-900
SERVICE MANUAL
GX-900 is composed of GX-900 and NX-GX500.
WARNING:
Failure to follow appropriate service and safety procedures when servicing this product may result in
personal injury, destruction of expensive components, and failure of the product to perform as specified.
For these reasons, we advise all YAMAHA product owners that any service required should be performed
by an authorized YAMAHA Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or recognition of any applicable technical capabilities, or establish a principle-agent relationship
of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore,
inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to
exist, please contact the distributor's Service Division.
WARNING:
Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this
buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the
unit.
■ CONTENTS
TO SERVICE PERSONNEL ..................................... 1~2
FRONT PANELS ........................................................... 3
REAR PANELS ............................................................. 4
SPECIFICATIONS ......................................................... 5
INTERNAL VIEW .......................................................... 6
DISASSEMBLY PROCEDURES ............................ 7~16
VOLUME RANGE ....................................................... 17
SYSTEM CONTROL CHECK ..................................... 17
TEST MODE ................................................................ 18
SYSTEM TEST MODE ................................................ 18
RECEIVER TEST MODE ...................................... 19~20
TAPE TEST MODE ..................................................... 20
CD TEST MODE ......................................................... 21
ALL FUNCTION TEST MODE .................................... 22
CD ERROR MESSAGES ............................................ 22
CD STANDARD OPERATION CHART ................ 23~26
このサービスマニュアルは、エコマーク認定の再生紙を使用しています。
This Service Manual uses recycled paper.
100674
TAPE ADJUSTMENTS ......................................... 27~29
MD TEST MODE & ADJUSTMENTS ................... 30~37
MD ERROR DISPLAY .......................................... 38~39
MD TROUBLESHOOTING .................................... 40~44
IC DATA ................................................................ 45~58
DISPLAY DATA .......................................................... 59
BLOCK DIAGRAM ................................................ 60~65
MD TEST POINT WAVEFORM ............................ 66~67
PRINTED CIRCUIT BOARD ................................. 68~82
PIN CONNECTION DIAGRAM ................................... 83
SCHEMATIC DIAGRAM ....................................... 84~90
PARTS LIST ........................................................ 91~117
GREASE APPLICATION DIAGRAM ................ 118~120
REMOTE CONTROL TRANSMITTER ...................... 121
NX-GX500 .................................................................. 122
GX-900
IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are
already known and understood by the users, and have therefore not been restated.
GX-900
■ TO SERVICE PERSONNEL
1. Critical Components Information.
Components having special characteristics are marked and
must be replaced with parts having specifications equal to
those originally installed.
WALL
OUTLET
EQUIPMENT
UNDER TEST
AC LEAKAGE
TESTER OR
EQUIVALENT
INSULATING
TABLE
CAUTION : USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
GX-900
THE COMPACT DISC PLAYER/MINI DISC RECORDER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE
EXCEPT PROPERLY QUALIFIED SERVICE PERSONNEL.
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
This set employs a laser. Therefore, be sure to carefully follow the instructions below when servicing .
CD Laser Diode Properties
● Material
: GaAlAs
● Wavelength
: 780 nm
● Emission Duration : Continuous
● Laser Output
: max. 44.6 µW*
* This output is the value measured at a distance of
about 200 mm from the objective lens surface on
the Optical Pick-up Block.
MD Laser Diode Properties
● Material
: GaAlAs
● Wavelength
: 785 nm
● Pulse time:
Read mode ... 0.8 mW Continuous
Write mode ...
max 10 mW 0.5S
min cycle 1.5S
Repetition
When checking the laser diode emission, keep your eyes more than 30 cm away from the objective lens.
w B, G models
q B, G models
1
GX-900
w A, B, G models
GX-900
English
➀ THIS PRINTING (SEE POSITION SHOWN IN THE ILLUSTRATION) INFORMS THE USER THAT THE APPARATUS
CONTAINS A LASER COMPONENT.
➁ THIS LABEL (SEE POSITION SHOWN IN THE ILLUSTRATION) WARNS THAT ANY FURTHER PROCEDURE WILL
BRING THE USER INTO EXPOSURE WITH THE LASER BEAM.
CAUTION : USE OF CONTROLS, ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN, MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
Swedish
➀ DENNA MÄRKNING (SE FIGUR) UPPLYSER OM ATT DET I APPARATEN INGÅR EN LASERKOMPONENT AV
TYP KLASS 1.
➁ VARNINGSMÄRKNING (SE FIGUR) FÖR STRÅLNING. INGREPP I APPARATEN BÖR ENDAST FÖRETAGAS AV
FACKMAN MED KÅNNEDOM OM LASER. APPARATEN INNEHÄLLER EN LASERKOMPONENT SOM AVGER
STRÅLNING ÖVERSTIGANDE GRÄNSEN FÖR LASERKLASS 1.
VARNING : OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD.
STIRRA EJ I STRÅLEN OCH BETRAKTA EJ STRÅLEN GENOM OPTISKT INSTRUMENT.
Danish
➀ DETTE MÆRKAT ER ANBRAGT SOM VIST I ILLUSTRATIONEN FOR AT ADVARE BRUGEREN OM AT APPARATET INDEHOLDER EN LASERKOMPONENT.
➁ DETTE MÆRKAT OM LASEREN ER ANBRAGT PÅ APPARATET SOM EN OPLYSNING OM AT APPARATET
INDEHOLDER ET LASERKOMPONENT.
ADVARSEL : USYNLIG LASERSTRÅLING VED ÅBNING, NÅR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION.
SE IKKE IND I STRÅLEN-HELLER IKKE MED OPTISKE INSTRUMENTER.
ADVARSEL : USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG SIKKERHEDSLÄS BRYTES. STIRR IKKE INN
I STRÅLEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.
Finnish
VARO! :
AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE LASER-SÄTEILYLLE.
ÄLÄ TUIJOTA SÄTEESEEN ÄLÄKÄ KATSO SITÄ OPTISEN LAITTEEN LÄPI.
2
GX-900
■ FRONT PANELS
▼ B, G models
GX-900
▼ A model
1
1
2
2
3
3
ABC
6
DEF
7
GHI
8
6
PQR
7
STU
8
VWX
4
4
5
5
JKL
MNO
PRESET
9
YZ
0
/
A
B
C
D
E
TIME
PROG
R. TIME
EDIT
+I0
MODE
REPEAT
RANDOM
● NX-GX500
SPACE
TUNER
DISC SKIP
CD
TAPE
INPUT MODE
M–MARK
SCROLL
DIRECTION
MD
REC/PAUSE
YMERSION
POWER
/I
SLEEP
INPUT
DELETE
MD EDIT
ENTER
BASS BOOST
MUSIC
320(12-5/8")
REC/PAUSE
VOLUME
SYS20
200(7-7/8")
3
320(12-5/8")
9
(3/8")
343(13-1/2")
364(14-5/16")
12
(1/2")
GX-900
100
(3-15/16")
▼ A model
172(6-3/4")
GX-900
■ REAR PANELS
▼ B, G models
280(11")
4
GX-900
■ SPECIFICATIONS
■ AMPLIFIER SECTION
■ SPEAKER SECTION (NX-GX500)
Minimum RMS Output Power per Channel
1kHz, 0.9% THD, 6Ω ...................................... 80W + 80W
1kHz, 10% THD, 6Ω ................................... 100W + 100W
Input Sensitivity/Impedance
AUX ............................................................... 200mV/47kΩ
Spectrum Analyzed Band ............................................. 5 band
(100Hz, 350Hz, 1kHz, 3.5kHz, 10kHz)
Type ................................................. 3-Way Bass-reflex Design
(Magnetic-Shielding Type)
Speakers .................................................. 13cm (5-1/8”) woofer
5cm (1-15/16”) tweeter
2cm (13/16”) super tweeter
Frequency Range ............................................. 60 to 20,000Hz
Maximum Input ................................................................ 240W
Impedance ............................................................................ 6Ω
Sound Pressure Level .................... 87dB/1m • 2.45V (1W/6Ω)
■ TUNER SECTION
FM Tuning Range .................................... 87.50 to 108.00MHz
AM Tuning Range .......................................... 531 to 1,611kHz
FM Usable Sensitivity (75Ω)
DIN Mono, S/N 30dB ................................................ 1.8µV
■ CD CHANGER SECTION
GX-900
Type .......................................... 3-Disc Carousel Auto-changer
Signal Readout ...................................................... Non-contact,
3-beam semi-conductor laser pick-up
D/A Converter ............................................................. 1bit DAC
Filter ........................................ 8-time oversampling digital filter
Wow & Flutter .................................................... Unmeasurable
Laser Diode Properties
Meterial : GaALAs
Wavelength : 780 nm
Emission Duration : continuous
Laser Output : max. 44.6 µW*
* This output is the value measured at a distance of about
200 mm from the objective lens surface on the Optical
Pick-up Block.
■ TAPE DECK SECTION
Type ..................................................................... Auto Reverse
4-Track 2-Channel playback/recording stereo Cassette Deck
Heads
REC/PB ..................................................... Hard permalloy
Erase ................................................... Double Gap Ferrite
Motors
Main ......................................................... DC servo motor
Tray Loading ...................................................... DC motor
Wow & Flutter
W.PEAK ................................................................. ±0.19%
W.RMS ..................................................................... 0.09%
Frequency Response (–20dB)
Type I/Normal tape ........................ 50 to 15,000Hz ± 3dB
Type II/High (CrO2) tape ............... 50 to 16,000Hz ± 3dB
■ GENERAL
Power Supply
A model ...................................................... AC240V, 50Hz
B, G models ............................................... AC230V, 50Hz
Power Consumption ........................................................ 150W
(approx. 1W when set to the standby mode)
Dimensions (W X H X D)
GX-900 ............................................. 280 X 320 X 364mm
(11” X 12-5/8” X 14-5/16”)
NX-GX500 ........................................ 200 X 320 X 218mm
(7-7/8” X 12-5/8” X 8-9/16”)
Weight
GX-900 ............................................. 10.5kg (23 lbs. 2 oz)
NX-GX500 .................................... 3.8kg (8 lbs. 6 oz)/each
Accessories ............................................ AM loop antenna X 1
Indoor FM antenna X 1
Remote Control Transmitter X 1
Battery (size “AA”, R06) X 2
Speaker Cord X 2
* Specifications subject to change without notice.
G .................. European model
B ....................... British model
A ................. Australian model
S/N Ratio
NR off ......................................................................... 58dB
Dolby B NR on ........................................................... 66dB
■ MD SECTION
System ......................................... Minidisc digital audio system
Recording Method ........... Magnetic field moduration overwrite
Reading Method ............................ Non-contact optical pick up
Coding ............ ATRAC (Adaptive TRansform Acoustic Coding)
Laser Diode Properties
Meterial : GaALAs
Wavelength : 785 nm
Pulse time :
Read mode .............................. 0.8 mW continuous
Write mode ............................. max. 10 mW 0.5S
min. cycle 1.5S
Repetition
* Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol
V are trademarks of Dolby Laboratories Licensing Corporation.
5
GX-900
■ INTERNAL VIEW
Top side
q
w
e
r t
y
u
i
P.C.B. TUNER
P.C.B. MAIN (5)
P.C.B. MAIN (1)
P.C.B. INPUT (1)
MD MECHANICAL UNIT
P.C.B. MAIN (2)
P.C.B. MAIN (3)
P.C.B. MAIN (6)
DECK MECHANICAL UNIT
GX-900
q
w
e
r
t
y
u
i
o
o
Left side
!0
q
!1
!2
r
!0 P.C.B. INPUT (2)
!1 CD MECHANICAL UNIT
!2 P.C.B. CD
u
y
i
o
t
6
GX-900
■ DISASSEMBLY PROCEDURES
(Remove parts in the order as numbered.)
q
1. Removal of Top Cover
Remove 11 screws ( q ) in Fig. 1.
Top Cover
q
q
2. Removal of CD Mechanical Unit
a. Disconnect the power cord from the AC outlet.
b. Push the Friction Arm ( the bottom side of the CD
Mechanical Unit ) with the Ejecting Tool or a tool like
as shown in Fig. 2.
q
q
CD Mechanical Unit
w
GX-900
Ejecting Tool for CD Tray (TX946040)
w
c. Pull the Tray forward approx. 5cm ( 2" ) and remove
the CD Lid in Fig. 2.
d. Push the Tray back to the original, closed position.
e. Disconnect the Flat Connecting Cables ( CB9 ) and
remove 2 connectors ( CB8 and CB7 ) in Fig. 2
f. Remove 4 screws ( w ) and then remove the CD
Mechanical Unit in Fig. 1.
w
r
e
3. Removal of Panel Unit
a. Rotate the Loading Gear, then open the Tray and
remove the Cassette Lid in Fig. 2.
b. Push the Tray back to the original, closed position.
c. Disconnect the flat connecting cables ( CB10 and
CB13 ) and remove a connector ( CB805 ) in Fig. 2.
d. Remove 6 screws ( e and r ) and then remove the
Panel Unit in Fig. 1.
u
e
Panel Unit
Fig. 1
e
Friction
Arm
FRONT
CB8
CB7
CD Lid
CB805
CB9
CB13
CB10
Cassette Lid
Loading Gear
7
Fig. 2
GX-900
4. Removal of Deck Mechanical Unit
a. Remove 4 screws ( t ) and then remove the Deck
Mechanical Unit in Fig. 3.
b. Remove 3 connectors ( W2, W3 and W4 ) in Fig. 3.
t
y
W2
t
W4
GX-900
CB5
CB3
Deck Mechanical Unit
MD Mechanical Unit
CB1
CB4
t
W3
Fig. 3
t
5. Removal of MD Mechanical Unit
a. Remove 3 screws ( y ) in Fig. 3 and 1 screw ( u ) in
Fig. 1.
b. Remove 4 connectors ( CB1, CB3, CB4 and CB5 ) in
Fig. 3.
c. Remove the MD Mechanical Unit.
y
(Bottom side)
Flat connecting cable
P.C.B. MD
i
i
!0
6. Removal of MD Mechanism
a. Disconnect the flat connecting cable in Fig. 4.
b. Remove 4 screws ( i ) in Fig. 4.
c. Remove 2 screws ( o ) in Fig. 4.
d. Remove 2 screws ( !0 ) in Fig. 4.
MD Mechanism
!0
o
o
Fig. 4
8
GX-900
7.
a.
b.
c.
d.
e.
Operation Check of P.C.B. CD
Remove the CD Mechanical Unit.
Remove 4 screws ( !1 ) and then remove the P.C.B. CD in Fig. 5.
Place blocks (at 3 locations) to hold the CD Mechanical Unit horizontally as shown in the Fig. 6.
Connect the Flat Connecting Cable ( CB9 ) and 2 connectors ( CB8 and CB7 ) in Fig. 5 and Fig. 6.
Connect the power plug and turn on the Power Switch.
!1
GX-900
P.C.B. CD
CB9
CB8
CB7
Fig. 5
P.C.B. CD
Block
Fig. 6
Block
9
Block
GX-900
8.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
Operation Check of P.C.B. Main (1)
Remove the CD Mechanical Unit.
Remove the Panel Unit.
Remove the Deck Mechanical Unit.
Remove the MD Mechanical Unit.
Remove 5 screws ( !2 ) in Fig. 7.
Remove 1 screw ( !3 ) and then remove the P.C.B. Main (2) in Fig. 8.
Remove 3 screws ( !4 ) in Fig. 8.
Remove 4 screws ( !5 ) and then remove the Power Transformer in Fig. 9.
Place the main unit on its left side (viewed from the front) and remove the Bottom Cover in Fig. 10.
Install the Panel unit to the main unit in Fig. 10.
Connect the flat connecting cables ( CB10 and CB13 ) and remove a connector ( CB805 ) in Fig. 2.
Connect the power plug and turn on the Power Switch.
CAUTION
When the power to this equipment is turned on with the CD/MD Mechanical Unit disconnected, the capacitor C255(4700/
16) of the Main P.C.B. (CD/MD power supply section) is charged. Connecting the CD/MD P.C.B. in this state may cause
damage to its IC. Therefore, when installing the CD/MD Mechanical Unit, be sure to discharge the capacitor C255(4700/
16) of the Main P.C.B. before making connections. (To discharge it, short the W201 terminal +B and GND with a
resistor(270Ω 1W).)
GX-900
P.C.B. Main (2)
!4
!3
!2
!2
!2
Fig. 7
Fig. 8
P.C.B. Input
!5
!5
Fig. 9
P.C.B. Main (1)
Fig. 10
10
GX-900
9.
a.
b.
c.
Removal of Tray & Traverse Unit
Remove 4 screws ( !6 ) and then remove the Clamp Bracket in Fig. 11.
Remove 2 screws ( !7 ) and then remove the Tray Brackets in Fig. 11.
Push the Friction Arm ( the bottom side of the CD Mechanical Unit ) with a screwdriver or the like and pull out the Tray
forward as in Fig. 11.
d. Remove 4 screws ( !8 ) and take out the Slider in Fig. 12.
e. Disconnect the Flat Connecting Cable ( 16P ) and connectors ( 6P ).
f. Remove the Traverse Unit in Fig. 12.
Clamp Bracket
!6
!8
!8
!6
Slider
Tray
Bracket
Tray
Spring
!7
Traverse
Unit
GX-900
Guide Pin
no marking
side
CD Mechanical Unit
Friction
Arm
Tray Bracket
Fig. 11
●
Precaution for Installation of Tray
Be sure to fit the shaft of the Friction Gear into
the groove in the Tray.
Friction
gear
Cam Gear
Fig. 12
Installation of Traverse Unit & Slider
a. Fit the Traverse Unit into the Chassis.
b. Turn the Cam Gear until its Guide Pin comes to the
position as shown in Fig. 12.
c. Fit the Slider into the Traverse Unit. Set the Spring of
the Slider so that it holds down the Guide Pin of the
Cam Gear (as shown in Fig. B).
(Press the Spring of the Slider once and release it,
and it will hold down the Guide Pin of the Cam Gear.)
d. After installation, check that the Clamp moves up and
down by turning the Load Gear.
●
Shaft
Cam Gear
Groove
Tray
Traverse
Unit
FRONT
Fig. A
Slider
Spring
Load Gear
NG
OK
Spring
Spring
Guide
Pin
Guide Pin
Fig. B
11
GX-900
10. Removal of Pick-up Head
a. Remove the Gear A in Fig. 13.
b. Pull out the Sled Shaft and remove the Pick-up Head
in Fig. 13.
Pick-up Head
11. Removal of Cassette Mechanism
Remove 4 screws ( !9 ) and then pull out the Cassette
Mechanism in Fig. 14.
12. Removal of Main Motor
Remove 2 screws ( @0 ) in Fig. 14.
Gear A
13. Removal of Pinch Roller
Detach the hook and then remove the Pinch Roller
in Fig. 15.
Sled Shaft
GX-900
14. Removal of Head Ass’y
a. Remove 1 screw ( @1 ) and then remove the Relay
P.C.B. in Fig. 15.
b. Remove 2 screws ( @2 ) and then remove the Head
Ass’y in Fig. 15.
* Perform the adjustment of azimuth after installing
the Head Ass’y.
Sled Shaft
Fig. 13
Stopper
!9
!9
● Check that the disc table height is as specified
below.
19.4mm
Disc Table
!9
!9
Fig. C
@0
@0
Fig. 14
Head Ass'y
Hook
Hook
Pinch Roller (L)
Pinch Roller (R)
@2
@1
@2
Fig. 15
12
GX-900
Disassembly of MD Mechanism Unit
Remove the MD mechanical unit according to Steps 1 ~ 6 of the disassembly procedure (page 7).
Removal of MD Main P.C.B. (Fig. 16)
1. Remove 4 screws (Q1).
2. Remove 6 connectors (Q2).
( Q1 ) x 4
1.7 x 3mm
( Q2 ) x 1
Flexible P.C.B. for
optical pickup (*1)
MD Main P.C.B.
(Q2)x1
GX-900
(*1) After pulling off the flexible P.C.B.
for the optical pickup from the
connector, cover its end with
aluminum foil or the like which is
electrically conductive so as to prevent
the optical pickup from being
damaged by static electricity.
( Q2 ) x 1
( Q2 ) x 3
Frame
Fig. 16
Removal of MD Mechanism (Fig.17)
Removal of Magnetic Head (Fig.18)
1. Remove 4 screws (R1).
1. Remove a screw (A1).
Caution
Almost the entire surface of the cartridge holder is
coated with oil. When removing the mechanism, hold it
at the rear end (where marked with arrows in the figure)
and avoid touching the oiled surface.
Cartridge Holder
Caution
a. When removing the magnetic head, hold its base and
do not touch the magnetic head itself or the leaf
spring.
b. Place the magnetic head upside down.
c. Use special care so as not to cause any damage to
the magnetic head when installing it.
MD Mechanism
(A1)x1
ø1.7x5mm
Leaf Spring
Black
MD Mechanism
Magnetic Head
Sheet, Head
Gray
Gray
(R1)x4
ø1.7x8.9mm
13
Fig. 17
Fig. 18
GX-900
Removal of Cartridge Holder (Fig.19)
1. Open the roller arm lever in the arrow direction and move the clamper lever to the rear.
2. With a +5V voltage (*2) applied to the red line side of the blue connector of the loading
motor, push the rack gear in the arrow direction until the cam plate lever clicks.
(*2) A +5V voltage can be obtained from the pluspol (D6.5/5V) of C35 and the ground
terminal of the MD P.C.B.
3. Remove a screw (B1 and B2, 1 each) from the holder arm and remove the cartridge
holder by moving it to the left.
Slider Lever
Cartridge Holder
Roller Arm Lever
Clamper
Lever
(B1) x1
Ø1.7x5mm
Loading
Motor
GX-900
C35
Rack Gear
Cam Plate
Lever
(B2) x1
Pluspol (D6.5/5V)
P.C.B. MD
Fig.19
Caution
Be careful so that oil does not get on the clamper lever
which contacts the roller of the roller arm lever.
Installation of Cartridge Holder
• To install the cartridge holder, the rack of the mechanism must be
lowered toward the rear.
• While pushing the roller arm lever outward, push in the slider lever.
• Apply a +5V voltage to the loading motor (until clicking sound is
heard) and push in the rack gear.
• With the slider lever and the rack gear installed as described above,
fit the cartridge holder as shown in the figure and tighten screws.
14
GX-900
(E1)x1
Ø1.7x3mm
Removal of Mechanism SW P.C.B. (Fig.20)
• Once the mechanism switch P.C.B. is removed, it will
be necessary to perform “Adjustment of Lead-in Switch
(E1)x1
Ø1.7x9.5mm
Position”. (See page 34.)
Mechanism SW P.C.B.
GX-900
1. Remove 2 screws (E1) and then remove the Mechanism SW P.C.B.
Fig.20
Installation of Mechanism SW P.C.B.
• Set the mechanism to the eject mode by applying -5V
to the loading motor.
• Install the mechanism SW P.C.B. so that the boss fits
in the hole in it.
• Push the lead switch on the mechanism SW P.C.B.
(E1)x1
Ø1.7x3mm
(E1)x1
Ø1.7x9.5mm
toward the optical pickup side (so that looseness in the
boss hole is eliminated).
• Tighten screws and apply thread lock.
• Measure the lead-in switch position. (See page 34.)
Lead-in switch
(Enter the result in EEPROM.)
Mechanism SW P.C.B.
Removal of Sled Motor/Loading Motor (Fig.21)
(D1)x2
Ø1.7x2mm
1. Remove 4 screws (D1) and then remove the sled
motor/loading motor.
(D1)x2
Ø1.7x2mm
Caution
Use care so as not to cause any damage to the gear.
(The damaged gear will cause abnormal noise to occur
while searching.)
Loading Motor
Sled motor
Fig. 21
15
GX-900
Removal of Spindle Motor (Fig.22)
• Once the spindle motor is removed, it will be necessary to perform “Pickup Rating”. (See page 35.)
1. Remove 3 screws (C1).
2. Remove the spindle motor by moving it in the arrow
direction.
Caution
a. Be careful not to scratch the gear.
(Scratched gear will produce noises during searching.)
b. As the turn-table is magnetized, keep foreign objects
Turn Table
Spindle Motor
from being attracted.
GX-900
(C1)x3
Ø1.7x2.5mm
(C1)x1
Ø1.7x2.1mm
Fig.22
(F1)x3
Ø1.7x9.5mm
Removal of Optical Pickup Head (Fig.23 and Fig.24)
1. Remove 3 screws (F1).
Caution
Use care so as not to cause any damage to the gear.
(The damaged gear will cause abnormal noise to occur
while searching.)
Optical Pickup Head
2. Remove a screw (F2).
The leaf spring (A) attached to the P.U. will be reused
when replacing the pickup. It is not supplied with the
optical pickup.
3. Using tweezers or the like, pull the PU shaft from the
base a little. Pull only enough to allow the pickup to
come off. If it is pulled off completely, the oil on the
shaft will be scraped off.
Be sure to keep oil on the shaft!
MD Guide (B)
Fig. 23
MD Guide (A)
Assembly of Optical Pickup
• When installing the pickup to the MD guide (A), be
sure to tighten the leaf spring (A) with it.
• When installing the pickup to the MD mechanism, fit
Optical Pickup
PU Shaft
the pickup into the MD guide (B) first, match the boss
of the MD guide (A) and its hole in the chassis and
tighten them with a screw.
Leaf Spring (A)
Fig. 24
Fit the pickup into the MD guide (B) first
(F2)x1
Ø1.4x2.2mm
16
GX-900
■ VOLUME RANGE
dB
–55
–54
1dB step
○
○
○
○
○
○
DISPLAY
VOL 10
VOL 11
○
dB
–∞
–79
–73
–68
–64
–61
–59
–58
–57
–56
○
DISPLAY
VOL MIN
VOL 01
VOL 02
VOL 03
VOL 04
VOL 05
VOL 06
VOL 07
VOL 08
VOL 09
VOL 54
VOL 55
–11
–10
DISPLAY
VOL 56
VOL 57
VOL 58
VOL 59
VOL 60
VOL 61
VOL 62
VOL 63
VOL 64
VOL MAX
dB
–9
–8
–7
–6
–5
–4
–3
–2
–1
0
GX-900
NOTE) When VOLUME is at minimum, MUTE of AMP is on.
■ SYSTEM CONTROL CHECK
q FUNCTION AUX is selected
CD PLAY KEY ON (remote control transmitter)
↓
w FUNCTION → CD ?
DISC No. display on?
↓
no
yes
In case that CD doesn’t play : [RECEIVER → CD]
(SYSCK, CDCE, SYSO) NG
In case that DISPLAY doesn’t change : [CD → RECEIVER]
(SYSI) NG
SYSCK: Pin 20 of IC8
CDCE: Pin 25 of IC8
SYSO: Pin 21 of IC8
SYSI: Pin 22 of IC8
e MD PLAY KEY ON (remote control transmitter)
↓
r FUNCTION → MD ?
MD display on?
↓ yes
CHECK OK
17
no
In case that MD doesn’t play : [RECEIVER → CD]
(SYSCK, CDCE, SYSO) NG
In case that DISPLAY doesn’t change : [MD → RECEIVER]
(SYSI) NG
SYSCK: Pin 20 of IC8
CDCE: Pin 25 of IC8
SYSO: Pin 21 of IC8
SYSI: Pin 22 of IC8
GX-900
■ TEST MODE
To facilitate inspection, measurement and location of any faulty point, 6 types of built-in Test Mode are provided, one
for each section.
• System Test Mode : Test mode for the system section. It is also used when entering the test mode for each section.
• Receiver Test Mode : Test mode for the receiver section
• Tape Test Mode : Test mode for the deck section
• CD Test Mode : Test mode for the CD section
• MD Test Mode : Test mode for the MD section
• All Function Test Mode : Test mode for all functions
■ SYSTEM TEST MODE
GX-900
This test mode is used for the system section. Also, this mode must be executed first when entering the test mode
for each section.
Starting Procedure
In the STANDBY mode, press the STANDBY/ON button while pressing the RANDOM button and the PLAY/
PAUSE(CD) button simultaneously. Once the SYSTEM TEST MODE is set, causal factors for the previous power
off appear on the FL display.
Causal factors for power off at starting
Display
Description
<Key Operate
Power off by button operation
<Off Timer
Power off by Off Timer setting
<Sleep Timer
Power off by Sleep Timer function
<Auto Off
Power off by Auto Power Off function
<I-Protect
Power off by detection of an abnormal current value
<V-Protect
Power off by detection of an abnormal voltage value
<Temp Over
Power off by detection of an abnormal temperature value
<AC Cut
Power off by AC power cut
<??
Unknown
Operation Procedure (Selection/finalizing of TEST MODE for each section)
1) Select the TEST MODE by the section name, pressing the wINPUT (up) or qINPUT (down) button.
Display
<Key Operate
Test RECEIVER
Test TAPE
Test CD
Test MD
Test All Func
Escape Test
Description
Causal factors for power off are displayed.
(This state is available immediately after starting.)
RECEIVER TEST MODE
TAPE TEST MODE
CD TEST MODE
MD TEST MODE
ALL FUNCTION TEST MODE
The test mode is canceled.
Ref. page
14
15
16
17
30
18
—
2) Pressing the MUSIC button will shift the mode to the selected test mode.
For the details of the selected test mode, refer to the Ref. page in the above step 1).
18
GX-900
■ RECEIVER TEST MODE
When RECEIVER TEST MODE is set through SYSTEM TEST MODE, “01 G.E.TEST” appears on the FL display. (01
is the test program No.)
Test programs from 01 to 25 are incorporated in RECEIVER TEST MODE.
GX-900
Operation Procedure (Selection/execution of Test Program)
1) Select the test program by pressing the rTAPE (up) or eTAPE (down) button.
2) Pressing the STANDBY/ON button will execute the selected test program.
3) Repeat selection/execution of the test program as necessary.
No. & DISPLAY
01 G , E , TEST
FUNCTION
Equalizer check mode
02 FL + CLEAR
FL display full lighting, Used for lighting of all display segments and clearing of RAM. (Note that
RAM CLEAR
the user memory will be cleared.)
At the first pressing of the STANDBY/ON button, all display segments light
up and at the second pressing, MEMORY and M-CLEAR light up for 2
seconds and RAM of CPU is initialized. (The product mode is restored.)
(Presetting of the tuner becomes the manufacturer preset state.)
03 FL FULL
FL display full lighting
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
APO - ON/OFF
RDS - OFF/ON
A , PS - ON/OFF
A , M , - RDS/ALL
CT > C - ON/OFF
L > CT - ON/OFF
PSR2 - ON/OFF
RTBL - ON/OFF
SEC - OFF/ON
Temp
PEAK - ON/OFF
AMPC - OFF/ON
CDCH - ON/OFF
REM CODE
L , EN - ON/OFF
ALL CH >
RDS E / F
SUR TEST
KEYC - OFF/ON
AM - IF
CANCEL
25 DEST
19
PURPOSE & OPERATION
Used to check EQ.
Pressing the STANDBY/ON button will set the Equalizer Test mode.
For the details, refer to page 20.
Used to check lighting of all display segments.
At the first pressing of the STANDBY/ON button, all display segments light up and
at the second pressing, this mode is canceled. (The product mode is restored.)
Do not use No. 04 to 23 functions as they are not for servicing.
Used to cancel the test program.
(The product mode is restored when the STANDBY/ON button is pressed.)
Destination display mode
GX-900
Equalizer test mode (Test program No. 01)
When the equalizer test mode is set, “GEQ - xxx” is displayed. “xxx” represents the 3 band value of GEQ.
It is possible to set the GEQ value directly, using the buttons on the remote control unit.
Example : To obtain flat
GEQ 6
6
Low tone
6
Intermediate tone
Displayed value
Gain (dB)
0
-12
High tone
1
-10
2
-8
3
-6
4
-4
5
-2
6
0
7
+2
8
+4
9
+6
A
+8
B
+10
C
+12
GX-900
Operation Procedure
• To set a value for each band
[ 0 ] to [ 9 ], [ A(TIME) ], [ B(PROG) ], [ C(R.TIME)]
• To set all bands to Min (-12dB)
[ D(EDIT) ]
• To set all bands to Max (+12dB)
[ E(+10) ]
• To cancel this test mode, press the STANDBY/ON button. (The production mode will be restored.)
● MAKER’S PRESET
BAND
MARKETS
FM (MHz)
AM (kHz)
U,
A,
U,
A,
C,
B,
C,
B,
NOTE 1) PRESET PAGE
R,
G,
R,
G,
T
L, R, T
T
L, R, T
(100k/10k)
(50k/9k)
(100k/10k)
(50k/9k)
1
98.1
98.10
630
630
2
95.1
95.10
1080
1080
............................................ A : FM
3
87.5
87.50
1400
1404
B : AM
PRESET No.
4
5
101.5
107.9
101.50 108.00
530
1710
531
1611
C : FM
6
88.1
88.10
900
900
7
106.1
106.10
1350
1350
8
107.9
107.90
1440
1440
D : AM E : FM
CAUTION : When executing Test program No. 2 RAM CLEAR, be sure to write down the preset memory contents of the
tuner, using a table like the one shown below. Execution of RAM CLEAR will set the memory contents of the
tuner back in the factory preset state which means that all the memories preset by the user will be erased.
Preset group
A
B
C
D
E
P1
P2
P3
P4
P5
P6
P7
P8
■ TAPE TEST MODE
When TAPE TEST MODE is set through SYSTEM TEST MODE, “Tape Test XXXX” appears on the FL display.
(XXXX is the counter value.)
The operation condition of the deck section will be as follows.
• When the reverse mode is set to “endless”, the number of playback repetition becomes unlimited.
(It is set to “8 “ times in the product mode.)
• When in the REC mode, AUX is used automatically for the input source.
20
GX-900
■ CD TEST MODE
When CD TEST MODE is set through SYSTEM TEST MODE, “00STM100: 00” appears on the FL display.
The CD TEST MODE is enabled. Each button operates as follows for each mode. The MODE No. is increased by
pushing "+10" button.
GX-900
Button
" 0 "
" 1 "
MODE 1
Open/close the tray
Clamp up/down
MODE 2
Focus search
Play (PLL)
" 2 "
DISC change
Play (without PLL)
" 3 "
Mechanism home process
Focus on, Tracking off, Feed off
" 4 "
Jump to test mode 4
+10 track kick
" 5 "
Tray close, Clamp down
–10 track kick
" 6 "
—
+1 track kick
" 7 "
Enter normal operation
(without mecha. INIT.)
Enter normal operation
–1 track kick
Start TEST REPEAT
(Do not use this function as
it is not for servicing.)
–30 track kick
" 8 "
" 9 "
Button
" 0 "
" 1 "
" 2 "
" 3 "
" 4 "
"
"
"
"
"
5
6
7
8
9
"
"
"
"
"
MODE 4
Feed forward (outer direction)
Feed backward (inner direction)
Rotate the disc motor
Retard the disc motor
port TBLL ← Low,
port TBLR ← High
port TSLW High/Low alternate
Tray port control (open/close)
Line mute on/off
—
Jump to Test mode 1
+30 track kick
MODE 5
—
—
—
—
—
—
—
—
—
—
MODE 3
Cancel adjust pass
*2
Auto adjustment mode 1 *1
Tracking Offset, Focus Offset,
Focus Gain
Tracking Balance, Tracking Gain
Focus Gain, Tracking Gain,
Focus Balance
Read and display the servo
coefficient
Displayed servo coefficient
address up
address down
increment
decrement
Send the displayed servo
coefficient *2
*1 “ A d j - ” l i g h t s d u r i n g t h e
adjustment and disappears at
the end of the adjustment.
*2 When the mode is reset to the
Production Mode after the servo
coefficients are renewed by this
operation, auto adjustment is not
available unless the auto
adjustment pass function is
cancelled.
The following button functions are not changed in the test mode No.
OPEN/CLOSE
DISC CHANGE
a (STOP)
w/d
Open/close the tray
Clamp up/down
Controls for the tray, the disc table and clamping stop. STANDBY command for the servo system.
Play (PLL)
(PLAY/PAUSE)
y
t
DISC 1
21
Feed forward (outer direction)
Feed backward (inner direction)
Tray close, clamper down
GX-900
■ ALL FUNCTION TEST MODE
When ALL FUNCTION TEST MODE is set through SYSTEM TEST MODE, “AUX Digital” appears on the FL display.
The operation condition in this mode will be as follows.
• AUX is used as the input source of the receiver section.
• When a CD is loaded, Full Repeat Play is executed automatically for it.
• When a cassette tape is loaded, Endless Rec Play is executed by the cassette deck automatically.
• When a MD is loaded, Endless Rec Play is executed by the MD deck automatically.
■ CD ERROR MESSAGES
INDICATION
E-10
E-20
E-30
E-70
E-11
E-21
E-31
E-73
E-04
E-14
E-35
E-06
E-47
E-57
E-77
E-18
E-28
E-38
E-48
E-68
E-AA
E-AB
E-AC
E-AD
E-AE
E-AF
MN ERR
STATE
PLAY
SCAN
PAUSE
SEARCH
PLAY
SCAN
PAUSE
SEARCH
LOAD, SEARCH
LOAD, SEARCH
SEARCH, PLAY, PAUSE
SEARCH
STOP
LOAD, EJECT, CHANGE
PLAY
SCAN
PAUSE
SEARCH
LOAD, DISC CHANGE
GX-900
Error message can be obtained on the display by pushing STOP and TIME buttons simultaneously when CD has
stopped (sometimes with the tray open) by an error.
CONTENTS OF ERROR







CD fails in the disc data reading after the state shift.





CD fails in the disc data reading.
CD fails in the TOC data reading.
Tracking servo is not effective at the disc motor servo PLL.
Disc motor servo PLL is not effective.
CD fails in focus search.
CD fails in escaping from the lead-in area.





The inner limit switch does not operate at the feed inner control.








CD fails in recovery from the focus out.
Clamp down switch does not operate at the clamp down control.
Clamp up switch does not operate at the clamp up control.
Close switch does not operate at the tray close control.
Open switch does not operate at the tray open control.
CD fails in the table control.
CD fails in the mecha. home process.
MN662741 does not give response of SENSE with resetting by the units
microcomputer.
When "MECHA ER" message appears on the display;
Possible symptoms are, the clamp does not move up or down, the table does not turn, mecha. sensor switch malfunctions, etc.
The normal operation may be restored by tuning off the power once and then on again. If it does not work in this way, disassemble the CD mechanical unit and investigate the cause of the failure.
22
GX-900
■ CD STANDARD OPERATION CHART
Press OPEN/CLOSE key.
Forced feed return operation.
“OPEN” appears in the TIME indicator.
“TRV” signal is output until detection of LIMIT switch.
Clamp down operation.
Disc table reset.
Tray open.
Tracking Offset auto ADJ. (only POWER ON)
Focus Offset auto ADJ. (only POWER ON)
GX-900
Load a disc in “DISC 1”.
Press PLAY key or push the tray.
Tray closed.
Table rotate.
DISC “1” is turned to DM clamp position.
Disc research.
Disc mechanism unit clamped up.
Feed inward switch research.
Laser ON.
LDON = “H” (IC5, 40 pin)
Disc scan.
FOCUS Gain rough ADJ.
FOCUS Search operation.
FOCUS LOCK servo ON.
FLOCK = “H” → “L” (IC11, 8 pin)
Spindle motor accelerated.
TRACKING servo ON.
Disc servo ON
VCO lock.
Tracking Gain rough ADJ.
Tracking Balance ADJ. (only Tray OPEN/CLOSE)
FOCUS BALANCE ADJ.
FOCUS GAIN ADJ.
TRACKING GAIN ADJ.
A
23
TLOCK = “H” → “L” (IC11, 11 pin)
GX-900
A
* TOC READ * ~ Data fetch cycle ~
TRACK No. “1” is searched.
After searching the beginning, MUTE is cancelled.
: MUTE = “L” → “H”,
(IC11, 64 pin)
“0:00” appears in the time indicator
.
~ PLAY ~
Set to SEARCH by means of Y, T key.
MUTE ON.
: MUTE = “H” → “L”
TRACK search.
: MUTE = “L” → “H”,
GX-900
After searching the beginning, MUTE is cancelled.
“0:00” appears in the time indicator
.
~ PLAY ~
Press the STOP key.
MUTE ON.
Spindle motor stop.
Laser OFF.
Forced feed return.
: LDON = “H” → “L” (IC5, 40 pin)
: FLSW = “L” (IC11, 26 pin)
~ STOP ~
24
GX-900
● HOME operation
NO
● CLOSE operation
Start
Start
LOAD MOTOR reverse rotate
10sec timer start
LOAD SW
OFF ?
LOAD MOTOR forward rotate
YES
LOAD SW
ON ?
TIMER 10ms
NO
YES
NO
LOAD SW
OFF ?
10sec timer
time up ?
TIMER 10ms
YES
YES
GX-900
NO
NO
LOAD SW
ON ?
NO
To OPEN operation
YES
LOAD SW
ON ?
LOAD MOTOR STOP
LOAD MOTOR STOP
YES
END
TIMER 10ms
NO
LOAD SW
ON ?
YES
LOAD MOTOR STOP
END
● DOWN operation
● OPEN operation
Start
Start
10sec timer start
10sec timer start
LOAD MOTOR reverse rotate
UNLOAD SW
OFF ?
NO
DOWN SW
ON ?
YES
NO
YES
10sec timer
time up ?
TIMER 10ms
NO
10sec timer
time up ?
TIMER 10ms
YES
UNLOAD SW
OFF ?
YES
LOAD MOTOR STOP
END
25
NO
LOAD MOTOR STOP
ERROR
YES
DOWN SW
ON ?
YES
END
NO
LOAD MOTOR STOP
ERROR
NO
GX-900
● ROTARY TRAY initialization operation
Start
10sec timer start
ROTARY MOTOR forward rotate
NO
POSITION SW
OFF ?
10sec timer
time up ?
YES
NO
YES
ROTARY MOTOR STOP
Timer 20ms
ERROR
NO
GX-900
POSITION SW
OFF ?
YES
10sec timer
time up ?
NO
POSITION SW
ON ?
NO
YES
YES
Timer 20ms
POSITION SW
ON ?
NO
YES
DISC NO. count
STOP SW
OFF ?
NO
YES
DISC
NO. 3 ?
POSITION SW
OFF ?
NO
NO
YES
10sec timer
time up ?
YES
ROTARY MOTOR retard
NO
YES
DISC NO. clear
NO
STOP SW
ON ?
YES
ROTARY MOTOR 32ms back pluse
ROTARY MOTOR STOP
STOP SW
ON ?
YES
NO
STOP SW
ON ?
YES
Overrun count clear
Overrun count
Timer 60ms
NO
Overrun
count = 3 ?
NO
YES
ERROR
END
26
GX-900
■ TAPE ADJUSTMENTS
1. Before adjustment
●
●
●
●
3. Test tape required
Since head magnetization, dust accumulations, etc.
are likely to introduce error in the various characteristics, it is very important that the heads are properly
demagnetized and cleaned.
Make adjustments of mechanical system, playback
system and recording system in that order.
Except for azimuth adjustment, adjust in the forward
direction.
Adjust at TAPE TEST MODE.
●
●
●
●
●
●
MTT-111N (TX911650) ........................... Normal speed
MTT-114N (TX911680) ................................ Azimuth
MTT-212N (TX911660) ...................... Playback level
MTT-256 (TX911300) ................ Playback frequency
response (Normal)
MTT-356 (TX911310) ................ Playback frequency
response (CrO2)
Reference tape
Type I/Normal (LH) .......... TDK AC225 (VU167200)
Type II/High (CrO2) ......... TDK AC514 (VU167300)
2. Instruments required
●
●
GX-900
●
●
●
●
●
Audio frequency oscillator
ACVM or dual channel (ACVM)
DCVM
Wow/flutter meter
Oscilloscope
Frequency counter
Torque meter
TW-2111A (TX911580) ... Take up/back tension (FWD)
TW-2121A (TX911570) .... Take up/back tension (RVS)
CT-160L (TX911120) .................................. FF/REW
● Test point
REC LEVEL ADJ.
(Lch)
REC LEVEL ADJ.
(Rch)
TAPE SPEED ADJ.
VR6
VR5
VR7
VR4
VR1
6
IC
VR3
VR2
PB LEVEL ADJ.
(Lch)
PB LEVEL ADJ.
(Rch)
BIAS ADJ.(Lch)
27
BIAS ADJ.(Rch)
GX-900
“MECHANICAL ADJUSTMENT”
Item to be
Adjusted
Step
Check each
torque
1
Instrument
required
Tape
CT-160L (FF, REW)
TW-2111A (FWD)
TW-2121A (RVS)
Torque
meter
Mode
Adjustment
part
FF REW
Rating
Remarks
FF, REW torque : within 70 ~ 160g/cm.
PLAY
Take up torque : 30 ~ 70g/cm.
Back tension : 1.5 ~ 6g/cm.
2
Check FF, REW
take up time
AC-514 (C-60)
FF REW
3
Azimuth
MTT-114N
10kHz, –10dB
ACVM
Oscilloscope
PLAY
Azimuth
adjustment
screw. (Fig. A)
Playback output of L and R is maxi- After the adjustment
mum and phase difference should make sure to apply
be minimum both directions. (Fig. B) screw lock paint.
4
Tape Speed
MTT-111N
3kHz, –10dB
Frequency
counter
PLAY
VR7
3000Hz ± 15Hz
Perform adjustment at
the center of the test
tape, if possible.
5
Wow/Flutter
MTT-111N
3kHz, –10dB
Wow/flutter
meter
PLAY
Less than 0.19% (WRMS)
Confirm at center of
the test tape, if possible.
Azimuth
adjustment
screw. (REVERSE)
GX-900
Azimuth
adjustment
screw. (FORWARD)
80 to 120 seconds.
Rec out L : ch 1
Rec out R : ch 2
DC input, X-Y (Resurge) mode
OK
NG
0.2V
0.2V
Fig. B
Fig. A
“ELECTRICAL ADJUSTMENT”
Use 560 mV (250 nwb/m) for 0 dB as the standard level of the unit.
0dB = 250 nwb/m (315 Hz) = – 7 dBV (Rec out level)
●
< Playback section >
Item to be
Adjusted
Step
1
2
Instrument
Mode
required
Tape
ACVM
Points of
measurement
PLAY REC OUT
Playback
level (315Hz)
MTT-212N
315Hz,
250nwb/m
Confirmation of
playback frequency
response
ACVM
Test tape for frequency check.
PLAY REC OUT
3180µs + 120µs (LH) (MTT-256) Oscilloscope
3180µs + 70µs (CrO2) (MTT-356)
Adjustment
parts
Rating
VR4 (L ch) – 7 dBV ± 0.3 dBV
VR1 (R ch)
Check that the 10kHz playback
level is within 0 ± 3 dB of the
1kHz playback level. (Fig. C)
● PLAYBACK FREQUENCY RESPONSE
± 3dB
± 3dB
± 3.5dB
± 4dB
50
250
315
1k
3k
10kHz 12.5kHz
Fig. C
28
GX-900
< Recording section >
Step
Item to be
Adjusted
Tape
Instrument
required
Mode
Adjustment
parts
Rating
Recording
level
AC-514
High
(CrO2)
ACVM
Audio
frequency
oscillator
REC
PLAY
Input 1 kHz Signal to
AUX IN from Audio
Frequency Oscillator.
Adjust output level of
Audio Frequency Oscillator so that the
voltage of REC OUT
becomes – 27 dBV.
REC OUT
VR6 (L ch)
VR5 (R ch)
Adjust for equal record and
playback levels.
(– 27 dBV ± 0.3 dBV)
2
Recording
bias
(Total
frequency
response)
AC-514
High
(CrO2)
ACVM
Audio
frequency
oscillator
REC
PLAY
Input 12.5 kHz Signal to AUX IN from
Audio Frequency Oscillator.
Adjust output level of
Audio Frequency Oscillator so that the
voltage of REC OUT
becomes – 27 dBV.
REC OUT
VR3 (L ch)
VR2 (R ch)
playback levels.
(– 27 dBV ± 0.3 dBV)
Confirmation AC-514
of recorded High
(CrO2)
level
3
ACVM
Audio
frequency
oscillator
Dolby NR B & OFF
Type I (Normal)/Type II (High)
± 4dB
± 3dB
± 5dB
± 5dB
50
250
315
1k
3k
playback levels. (Fig. D)
Perform record bias adjustment of High (CrO 2) tape
again, if the rating was not
satisfied.
REC OUT
REC
PLAY
● TOTAL FREQUENCY RESPONSE ( – 27 dBV)
10kHz 12.5kHz
Fig. D
29
Points of
measurement
1
AC-225
Normal
(LH)
GX-900
Measurement
conditions
Confirm recorded level rating as in step 1 When recorded level rating is improper, go back to step 1
and also carry out adjustments in step 2 again.
GX-900
■ MD TEST MODE & ADJUSTMENT
Preparation before Adjustment
● Extension cable (see connection diagram on page 35.)
● Test disc
Type
Type
High reflecting disc
Low reflecting disc
Low reflecting disc
Test disc
Part No.
1. Extension P.C.B. for servicing
TX946230
TDYS1 (SONY) [for reproduction] (P/No. TX945850)
2. 2-pin extension connector for servicing
TX946200
Commercially available mini disc for recording
3. 6-pin extension connector for servicing
TX946210
MMD-318 [for pre-adjustment] (P/No. AAX04890)
4. 5-pin flat cable for servicing
TX946190
5. 28-pin flat cable for servicing
TX946220
MD TEST MODE
1. How to set to the test mode
1) In the STANDBY mode, press the STANDBY/ON button while pressing the RANDOM button and the PLAY/
PAUSE(CD) button.
GX-900
“<Key Operate” on display ............................................................... SYSTEM TEST MODE
2) Select the MD TEST MODE by the section name, pressing the wINPUT (up) or qINPUT (down) button.
3) Pressing the MUSIC button will shift the mode to the MD test mode.
Version of microprocessor on display (about 1 second)
t s m 1 3 0 1 e 0 2
Version of EEPROM protect data (from 01)
Version of microprocessor ROM (from 01)
“EJECT” on display
4) Load either a disc for reproduction or a disc for recording.
“AUT YOBI” on display
This completes setting to the test mode.
2. How to set to each mode
Every time the r(MD) button is pressed, the mode changes. (For operation of each mode, refer to the section describing each mode.)
->AUTO pre-adjustment -> AUTO adjustment -> RESULT preparation -> RESULT -> MANUAL pre-adjustment ->
MANUAL adjustment -> EEPROM setting
Caution) The AUTO pre-adjustment and AUTO adjustment modes are used for adjustment during servicing. Other modes
are used when checking the specific measured values and adjusted values or when changing the set value and the
adjusted value. Note that use of other modes will rewrite RAM and EEPROM.
3. How to cancel test mode
1) Finish the AUTO pre-adjustment and AUTO adjustment. ( “COMPLETE” appears on the display)
2) Press the a(MD) button. ( “TEST END” appears on the display)
3) Eject the disc by pressing the EJECT button.
4) Turn off the power.
● When using a new combination of a mechanical pickup and an MD P.C.B. after a repair or for some other
reason, make sure to set to the TEST mode and perform AUTO pre-adjustment and AUTO adjustment according to the following procedure.
1) Set to the TEST mode and perform AUTO pre-adjustment and AUTO adjustment.
2) Cancel the TEST mode by pressing the a(MD) button. (Writing into EEPROM starts from here.)
3) Eject the disc by pressing the EJECT button.
4) Turn off the power.
30
GX-900
Description of TEST modes
1. AUTO pre-adjustment mode
Automatic pre-adjustment is performed. (Grating adjustment mode after this adjustment.)
[ _ AUT _ YOBI _ ]
Adjusted values are output by using the interface.
2. AUTO adjustment mode
Automatic adjustment is performed.
[ AUTO _ AJST _ ]
Adjusted values are output by using the interface.
Continuous reproduction is performed. (Error rate on display, jump test)
3. RESULT preparation mode
Not used (Do not use this function as it is not for servicing)
[ _ RST _ YOBI _ ]
4. RESULT mode (main adjustment)
[ _ RESULT _ _ _ ]
5. MANUAL pre-adjustment mode
[ _ MNU _ YOBI _ ]
6. MANUAL adjustment mode
GX-900
[ _ MNU _ AJST _ ]
7. EEPROM setting mode
Various factors of the digital servo function are changed manually.
[ EEPROM _ SET ]
Each servo function is turned on independently.
The voltage is measured at the temperature detect terminal and the standard value is set.
8. TEST-PLAY mode
Continuous reproduction from the specified address is performed.
[ TEST _ PLAY _ ]
C1 error rate is measured and ADIP error rate is measured.
9. TEST-REC mode
Continuous recording from the specified address is performed.
[ TEST _ REC _ _ ]
10. INNER mode
The position where the INNER switch is turned ON is measured.
[ _ _ INNER _ _ _ ]
11. EJECT mode
To TEMP setting (of EEPROM setting)
[ _ _ EJECT _ _ _ ]
To CONTROL setting (of EEPROM setting)
Laser power setting (record/reproduction power) is performed.
1. AUTO pre-adjustment mode
Step
Setting method
Remark
Display
1
Set the Test mode to STOP.
No disc is loaded.
[ EJECT ]
2
Load a disc.
Auto pre-adjustment menu
3
Press the REC/PAUSE(MD) button
once.
Grating adjustment is performed and
adjusted values are output.
Adjustment is completed.
Auto pre-adjustment is started after sliding to the innermost
track.
“ *** ” changes in the following order during automatic
adjustment.
HAo -> RFg -> SAg -> SBg -> PTG -> PCH -> GTG -> GCH ->
RCG -> SEG -> RFG -> SAG -> HAO -> HEO -> TCO -> LAO
Proceed to Step 4 when adjustment is OK.
Proceed to Step 5 when adjustment is NG.
The display returns to the AUTO pre-adjustment menu.
[ LOADING ]
[ _ AUT _ YOBI _ ]
[ *** : _ _ _ _ _ _ ]
4
5
31
Low reflecting disc (MMD-318) only
When adjustment is OK, press the
CHARACTER button.
When adjustment is NG, press the
CHARACTER button.
There is an abnormality at the adjusted point such as HAo.
Refer to “Troubleshooting”. (page 40)
[ _ COMPLETE _ ]
[ Can't _ ADJ. ]
[ _ AUT _ YOBI _ ]
[ Can't _ ADJ. ]
GX-900
2. AUTO adjustment mode
Step
Setting method
Remark
Display
1
Set the TEST mode to STOP.
No disc is loaded.
[ EJECT ]
2
Load a disc.
Press the r(MD) button once.
AUTO pre-adjustment menu
AUTO adjustment menu
3
Press the REC/PAUSE(MD) button
once.
Adjusted values are output.
Automatic pre-adjustment is started after sliding to the innermost
track.
“ *** ” changes in the following order when a high reflecting disc
(disc for reproduction) is used.
PEG -> HAG
“ *** ” changes in the following order when a low reflecting disc
(disc for recording) is used.
PEG -> LAG -> GCG -> GEG -> LAG
Proceed to Step 4 when adjustment is OK.
Proceed to Step 5 when adjustment is NG.
Continuous reproduction (bit section)
(Address + C1 error display)
Continuous reproduction (group section)
(Address + C1 error display)
(Address + ADIP error display)
Display returns to the AUTO adjustment menu display.
There is an abnormality at the adjusted point such as PEG.
Refer to “Troubleshooting”. (page 20)
[ LOADING ]
[ _ AUT _ YOBI _ ]
[ AUTO _ AJST _ ]
[ *** : _ _ _ _ _ _ ]
Adjustment is completed.
When adjustment is OK, press the
REC/PAUSE(MD) button.
5
Press the PROG button.(REMOCON)
Press the CHARACTER button.
6
When adjustment is NG, press the
CHARACTER button.
GX-900
4
[ _ COMPLETE _ ]
[ Can't _ ADJ. ]
[ s XXXX c YYYY ]
[ a XXXX c YYYY ]
[ a XXXX a YYYY ]
[ AUTO _ AJST _ ]
[ Can't _ ADJ. ]
Note) *** : Adjustment name, XXXX: Address, YYYY: Measured value
8. TEST-PLAY mode
(Use this mode to check that the playback function is provided at the specified address.)
Step
Setting method
1
2
3
Load a disc.
Press the MD EDIT button.
Press the REC/PAUSE(MD) button.
4
5
6
Remark
TEST-PLAY menu
ADDRESS setting (The initial value of the target address is displayed.)
Set the search output to “H” while searching and back to “L” when
continuous reproduction is started.
Continuous reproduction (bit section) (Address + C1 error display)
Continuous reproduction (group section) (Address + C1 error display)
(Address + ADIP error display)
TEST-PLAY menu
Display
[ _ AUT _ YOBI _ ]
[ TEST _ PLAY _ ]
[ ADRES _ 0050 ]
[ s XXXX c YYYY ]
[ a XXXX c YYYY ]
[ a XXXX a YYYY ]
[ TEST _ PLAY _ ]
• Every time the MD EDIT button is pressed in the address setting mode, the address changes in the order of 0050-> 03C0 -> 0700 -> 08A0
-> 0050 -> —
• Pressing the r(MD) button in the TEST-PLAY menu changes to the AUTO pre-adjustment menu.
32
GX-900
9. TEST-REC mode
Use a disc for confirmation of recording function. (It is used to check the REC function at the specified address.)
Step
Setting method
1
2
3
4
Load a disc.
Press the MD EDIT button twice.
5
Remark
TEST-REC menu
ADDRESS setting (The initial value of the address is displayed.)
Set the search output to “H” while searching and back to “L” when
continuous reproduction is started.
Continuous recording
TEST-REC menu
Display
[ _ AUT _ YOBI _ ]
[ TEST _ REC _ _ ]
[ a0050 _ pw ZZ ]
[ a XXXX _ pw ZZ ]
[ TEST _ REC _ _ ]
GX-900
• Every time the MD EDIT button is pressed in the address setting mode, the address changes in the order of 0050-> 03C0 -> 0700 -> 08A0
-> 0050 -> —
• Pressing the r(MD) button in the TEST-REC menu changes to the AUTO pre-adjustment menu.
10. INNER mode
Step
Setting method
1
2
3
Load a disc.
Press the w/d(CD) button.
4
Remark
INNER menu
INNER switch position is measured.
(Both SUBQ address and C1 error are displayed.)
INNER menu
Display
[ _ AUT _ YOBI _ ]
[ _ _ INNER _ _ _ ]
[ s XXXX c YYYY ]
[ _ _ INNER _ _ _ ]
• Pressing the r(MD) button in the INNER menu changes to the AUTO pre-adjustment menu.
11. EJECT mode
Step
Setting method
1
2
3
4
5
EJECT status in the TEST mode
Press the MD EDIT edit button.
6
Press the w/d(CD) button.
7
Remark
EJECT menu (No disc is loaded.)
Maximum power output status
Recording power output status
Reproduction power output status
To TEMP setting of EEPROM setting
(Refer to TEMP setting of EEPROM.)
To CONTROL setting of EEPROM setting
(Refer to CONTROL setting of EEPROM.)
EJECT menu
Display
[ _ _ EJECT _ _ _ ]
[ xpw _ _ _ _ _ _ _ ]
[ rpw _ _ _ _ _ _ _ ]
[ ppw _ _ _ _ _ _ _ ]
[ _ _ EJECT _ _ _ ]
● Confirmation of pick-up laser power
Recording and reproduction can be checked by using the laser power meter. However it should be used for checking only
because there is variation in its measurement.
When the measured value is excessively deviated from the reference value, replace the pick-up.
Reference value (measured at room temperature of 25 °C)
During reproduction (ppw) : 0.72 ± 0.1 mW
During recording : 5.5 ± 0.5 mW
Note : Be very careful when using the laser power meter. The laser beam would cause damage to your eye if exposed to it
directly.
33
GX-900
● Lead-in switch position measurement mode
Load a TDYS1 disc for reproduction (high reflecting disc).
Note) Adjust the position of the lead-in switch to FF85 ~ FFD2.
1. Loosen 2 screws (A) fixing the mechanism switch P.C.B.
2. Retighten screws while pushing the mechanism switch P.C.B. in the arrow (<-) direction and then measure the
position of the lead-in switch again. After adjusting the position, tighten 2 screws (A) securely. (Fig.25)
Loosen 2 screws (A)
Note) Apply thread lock to 2 screws on the
P.C.B. after tightening them.
GX-900
Lead-in switch
Mechanism SW P.C.B.
Fig.25
● Forced rotation of loading motor
It is possible to force the loading motor to rotate by turning the jog dial when the microprocessor version (tsm13**e**)
of the test mode or EJECT appears on display. (This is used when the disc cannot be ejected.)
* To obtain the microprocessor version on display When a disc is loaded, “ _ AUT _ YOBI _ ” appears on display. Press
the CHARACTER key in this state, and the microprocessor version will appear.
● Confirmation of magnetic head installation position
• After replacing the magnetic head and the optical pick-up, be
sure to confirm their installation positions.
• To facilitate adjustment of their installation positions, bring the
optical pick-up to the center position and follow the procedure
described below.
1. Push down the up-shift arm of the magnetic head with a finger to
Magnetic head
Circumferentical direction
Objective lens
Radial direction
Push down with a finger.
raise the magnetic head.
2. Looking at the unit from above, check if the magnetic head
matches with the optical pick-up objective lens.
3. Check to ensure that the magnetic head moves up and down
smoothly.
Magnetic head
34
MECHANISM ADJUSTMENT
When making adjustment, be sure to connect an extension cable for servicing and an expansion P.C.B. as shown in
Fig.29.
1
3
1. Optical pickup rating inspection method
(Externally attached)
GND (TP1125)
IC1101 No.43 pin
EOUT (TP1129)
IC1101 No.26 pin
Oscilloscope
a
100K
470p
GND CH1
CH2
470p
FOUT (TP1130)
IC1101 No.25 pin
2
X
100K
Y
Spindle motor
b
Lissajous waveform
a:b = Within 4:1
(See page 69)
Fig. 26
After performing automatic adjustment in the AUTO mode
Adjustment hole
selected from the test mode by using a high reflecting MD
disc (COMPLETE status on display), adjust the EOUT to
3
Spindle motor
Check the Lissajous waveform while adjusting the
installation position by using a
screwdriver in the adjustment
Adjustment hole hole in the spindle motor.
1
FOUT Lissajous waveform (x-y).
1. Loosen 3 screws of the spindle motor a little and make
adjustment while watching the Lissajous waveform.
2. After adjustment, tighten screws in the order of (q), (w)
2
and (e).
Fig. 27
Jitter meter
2. Jitter verification method
After performing automatic adjustment in the AUTO mode
selected from the test mode by using a low reflecting MD
disc, confirm the jitter in the pit continuous reproduction
IC1201 No.1 pin (TP1201)
EFMMON
GND
(TP1125)
mode and the groove continuous reproduction mode.
Fig. 28
(See page 69)
Connector for 2P extension
TX946200
FFC for 5P extension
TX946190
From magnetic head
CN1300(Rear face)
From motor
Mechanism
SW P.C.B.
From optical pickup
CN1602(Rear face)
CN1601(Rear face)
FFC for 28P extension
TX946220
CN1603(Rear face)
CN1604(Rear face)
CN1101
MD Main P.C.B.
Extension P.C.B. for servicing
(TX946230)
Install an Extension P.C.B. for servicing
to the mechanism.
Connector for 6P-2P extension
TX946210
Fig. 29
35
PROCEDURE TO WRITE DATA INTO EE-PROM (IC1402)
1. Procedure to change the EE-PROM and write the
initial value of the microprocessor into EE-PROM
(1) Replace the EE-PROM.
(2) Refer to the latest “List of EE-PROM contents”.
(3) Press the STANDBY/ON button while pressing the
REC PAUSE(MD) button and the w/d(CD) button to
start the test mode.
(4) Version on display
Version of EEPROM protect data (from 01)
(5) Press the MD r button 4 times.
[
Temp
]
(6) Press the REC/PAUSE(MD) button.
[ TEMP ❍ ❍ ◆ ◆ ]
❍ ❍ : Temperature measured value
◆ ◆ : Temperature set value
(7) Adjust the temperature set value to the value obtained as described above by using the jog dial.
(8) Press the CHARACTER button.
[ EEPROM SET ]
t s m 1 3 * * e * *
Version of microprocessor ROM (from 01)
LIST OF EE-PROM CONTENTS
(5) Load a disc.
[ AUT YOBI ]
● Focus setting
(6) Press the INPUT w button 6 times.
[ EEPROM SET ]
(7) Perform the procedure to have “EE-PROM setting
mode transition diagram” displayed, compare it with
“List of EE-PROM contents” and set to “List of EEPROM contents” by using the jog dial.
(8) Set the temperature standard value.
(Refer to “Procedure to set the temperature standard
value”.)
(9) Use the same settings as “List of EE-PROM contents” for all.
10) Set to the TEST mode and perform AUTO preadjustment and AUTO adjustment.
11) Cancel the TEST mode by pressing the a(MD)
button. (Writing into EEPROM starts from here.)
2. Procedure to set the temperature standard value
(This setting should be performed within the room
temperature range of 21 ˚C ~ 29 ˚C.)
(1) Have the AUTO pre-adjustment mode menu displayed.
Item on display
FG
❍❍
FF1
❍❍
FF2
❍❍
FZHLEV
❍❍
FOKLEVn
❍❍
FOKLEVf
❍❍
FOKLPFn
❍❍
FOKPFVf
❍❍
WAITf
❍❍
● Spin setting
Item on display
SPG
❍❍
SPG-in
❍❍
SPG-mid
❍❍
SPG-out
❍❍
SP1
❍❍
SP2
❍❍
SP3
❍❍
SP4
❍❍
SP5
❍❍
SPDLIM
❍❍
[ AUT YOBI ]
(2) Compensate the temperature to be suitable for the
ambient temperature, referring to the table below.
Ambient temperature
Compensation value
+ 21.0 ˚C ~ + 23.2 ˚C
+ 23.3 ˚C ~ + 26.8 ˚C
+ 26.9 ˚C ~ + 23.7 ˚C
– 01H
± 0H
+ 01H
Example : When the ambient temperature is 22 ˚C
and the temperature measured value is 7AH
Temperature set value = 7AH – 01H
= 79H
* When the measured temperature deflects between 2
values, use the smaller one as the measured value
(79H if measured values are 7AH and 79H).
(3) Press the MD r button 6 times.
[ EEPROM SET ]
(4) Press the REC/PAUSE(MD) button 7 times.
[
Focus
]
Set value
DA H
70 H
E0 H
ED H
08 H
08 H
00 H
88 H
90 H
Set value
20 H
B8 H
95 H
79 H
10 H
87 H
E3 H
E3 H
10 H
7F H
● Tracking setting
Item on display
TG
❍❍
TF1
❍❍
TF2
❍❍
SVCNT4
❍❍
TRBLVo
❍❍
TRBLVt
❍❍
TRkLVo
❍❍
TRkLVt
❍❍
TDPWo
❍❍
TDPWt
❍❍
SLCTo
❍❍
SLCTt
❍❍
SLCTm
❍❍
TCRSCIP
❍❍
COTLVP
❍❍
COTLVr
❍❍
WAITm
❍❍
Set value
6B H
6B H
E0 H
00 H
50 H
54 H
50 H
2E H
89 H
1A H
00 H
40 H
53 H
16 H
0A H
1C H
FF H
36
GX-900
● Slide setting
Item on display
SLG
❍❍
SL2
❍❍
SLDLIM
❍❍
SLDLEV
❍❍
SLKLVk
❍❍
SLKLVt
❍❍
SLKLVm
❍❍
● Control setting
Set value
3B H
18 H
7F H
12 H
50 H
3A H
50 H
● Adjust setting
GX-900
COK
FAT
TAT
CAT
FAB
STR
SFS
STC
Item on display
❍❍
❍❍
❍❍
❍❍
❍❍
❍❍
❍❍
❍❍
Set value
A0 H
C0 H
3E H
20 H
64 H
0A H
0D H
0D H
Item on display
CONTROL1
❍❍
CONTROL2
❍❍
SPKLEVm
❍❍
ADJTTM
❍❍
HDEQAD
❍❍
LDEQAD
❍❍
GDEQAD
❍❍
HDEQBC
❍❍
LDEQBC
❍❍
GDEQBC
❍❍
HALSG
❍❍
LALSG
❍❍
GALSG
❍❍
HALSOFS
❍❍
LALSOFS
❍❍
GALSOFS
❍❍
Set value
80 H
02 H
26 H
14 H
92 H
8F H
8D H
8C H
8F H
8D H
21 H
21 H
11 H
FF H
00 H
00 H
EE-PROM SETTING MODE TRANSITION DIAGRAM
Note)
37
To return to the SUB MENU or MAIN MENU display of the test mode, press the CHARACTER button.
GX-900
■ MD ERROR DISPLAY
Error on display
Can't REC
Description
• DEFECT occurred 10 times continuously during RECPLAY.
• Recordable cluster became “0” due to occurrence of
DEFECT during REC-PLAY.
Countermeasure
• Check that the disc is free from scratch, dust,
finger print, black spot, etc. and that
decentering, face deflection, etc. are not
excessive.
• REC mode cannot be set for 20 seconds even after
repeated try of reading the read disabled address.
Can't Copy
• One of the following judgments has been made
depending on the channel status of the digital signal
• Check if the CD is a copy inhibited on (e.g., CDR, etc.)
inputted from D-IN during REC-PAUSE or REC-PLAY.
(1) Other than audio
(2) Other than civil purpose
GX-900
(3) Copy NG due to reversed COPY bit of CD
DIGin Unlock
• Either of the following symptoms occurred for the digital
signal inputted from D-IN during REC-PAUSE or REC-
• Check that the D-IN signal line is free from
abnormality.
PLAY.
(1) Digital IN PLL is unlocked.
(2) Locked under conditions other than FS=44.1kHz.
TOC Full
• No space is left to register music No and character data
(song name, disc name, etc.) while the REC-PLAY
• Use a disc for recording and reproduction with a
space left to register UTOC.
function is used.
• No recordable space is left when trying to activate the
REC-PAUSE function.
UTOC ERR R
• “FTNO > LTNO” occurred.
• “FTNO = 0 or 1” occurred.
• As an abnormality exists in the UTOC data, use
another disc.
• UTOC recorded in the disc could not be read.
UTOC ERR A
• “Start address > end address” occurred.
UTOC ERR L0 ~ 4
• Any one of the UTOC0 ~ 4 data was looped.
Not Audio
• Data not for audio purpose is recorded in the track mode
• Select another TNO or use another disc.
of TNO which is currently selected.
Disc Full
• No recordable space is left when trying to activate the
REC-PAUSE function.
Playback MD
• The loaded disc was for reproduction only when trying to
activate the REC-PAUSE function or trying to edit.
Protected
• Recording of editing was attempted while the data
protector of the disc for recording and reproduction is
set to the data protected state.
• Editing the track subject to write protect function was
• Use another disc for recording with a recordable
space left.
• As the loaded disc is for reproduction only, use
a disc for recording.
• Try again with the data protector set to the
original position.
• As the track to be edited is write protected, try
again with another track.
attempted by using the data written in UTOC.
38
GX-900
Error on display
Can' t Edit
Description
Countermeasure
• Editing conditions were not satisfied with respect to
• Wrong operation procedure was used. Try
again by using the correct procedure.
each editing function.
TMP Over!!
• The temperature in the set (MD unit) went up excessively high due to occurrence of some abnormality.
• Check according to troubleshooting.
• Check the temperature of the area where the
unit is used.
DISC ERR R
DISC ERR S
DISC ERR W
• The data was not correct or it was not possible to read it
• Use another disc as there is an abnormality in
TOC or UTOC data or the disc has a scratch or
correctly.
• Recording the music data failed as an abnormality
other faulty condition.
GX-900
occurred while recording it.
TOC ERR S
• The TOC data was not correct.
TOC ERR R
• It was not possible to read the TOC data.
• The TOC data recorded in the disc is not in
compliance with the MD standard.
• Use another disc as the disc has a scratch or
U TOC W ERR
• It was not possible to rewrite UTOC correctly and an
abnormality occurred while rewriting it.
FOCUS ERR
• The disc was loaded but it was not possible to draw in
• Use another disc as the disc has a scratch or
• Check that the disc is free from scratch, dust,
finger print, black spot, etc. and that
FOCUS.
decentering, face deflection, etc. are not
excessive.
BLANK DISC
• The total number of TNO and NAME characters was “0”
as a result of reading UTOC.
TOC W ERROR
• UTOC can be read but cannot be rewritten.
• Check if the disc is recordable by actually
recording.
• Check if the recording head contacts properly
and if wiring from the circuit board to the
recording head is free from breakage.
EEPROM ERROR
• The EEPROM data is not correct
• Try again after resetting and if still NG, replace
EEPROM.
Mechanism Error
Error on display
Description
MECHA_ERR2_*
The head fails to move up.
MECHA_ERR3_*
The head fails to move down.
HINF (IC1401 No.97 pin)
*=E
39
Eject completed position
< 1.3 V
* = M Horizontal midway position
> 3.06 V
*=L
Load completed position
1.853 ~ 2.48 V
*=D
Head down position
1.3 ~ 1.853 V
GX-900
■ MD TROUBLESHOOTING
When MD fails to operate
When the objective lens of the optical pickup becomes dirty, MD may fail to operate. Clean the objective lens first and
check MD for reproduction function. If it still fails to operate, check according to the following flow charts.
Contaminant on the pickup lens such as dust and a foreign matter may cause the pickup to skip or the TOC (content of the
selection) not to be displayed. Check if the lens is clean before making adjustments. If the lens is dirty, clean it as follows.
● Turn off the power. Dampen the lens cleaning paper with a small amount of isopropyl alcohol and wipe the lens with it,
using care not to cause any damage to the lens. Be sure not to touch the lens with your hand directly.
▲
Check the trouble item “Play mode is not available.”.
▲
Check the trouble item “Audio reproduction circuit”.
▲
Check the trouble item “Recording/reproduction function”.
▲
Check the display section.
▲
Check the power supply section and CN1501.
▲
Check IC2 and CN1501.
▲
Check IC1401.
▲
Check IC1201.
▲
Check IC1401.
GX-900
NO
YES
Is appropriate audio output provided?
▼
NO
YES
Is the play mode available when the PLAY/PAUSE button is pressed?
▼
Check the trouble item “Disc cannot be loaded properly.”.
YES
Does the disc loading function work properly?
▼
Check the trouble item “Power fails to turn on”.
▲
▼
NO
▲
Does the power turn on when the POWER button of the main unit is pressed?
NO
YES
NO
Does recording/reproduction function work properly?
Power fails to turn on.
Does the unit operate properly when its STOP button of is pressed?
YES
NO
▼
Is +5V ~ +6V voltage applied to No.17 and 18 pins of CN1501?
NO
YES
▼
Is a pulse applied to No.6 pin of CN1501 when the reset power is turned on?
▼
NO
YES
Is the voltage at No.62 pin of IC1401 +3.2V?
YES
NO
▼
Is a 8.4672MHz pulse applied to No.15 pin of IC1401?
NO
YES
▼
Is a pulse output from No.34 pin of IC1401?
NO
YES
▼
Check CN1501 and IC2.
40
GX-900
Disc cannot be loaded properly.
YES
Does the loading function work properly when a disc is inserted?
▼
NO
Check CN1901 and SW1956.
▲
Check IC1401.
▲
▼
▲
NO
Does No.4 pin of CN1901 become “L”?
Check CN1604 and IC1601.
YES
NO
Does a change occur at either No.1 or 28 pin of IC1601?
▼
GX-900
YES
▼
NO
Does a change occur at either No.9 or 10 pin of IC1601?
YES
▼
Check M1953 and CN1604.
▼
YES
Does eject function work when the MD eject button is pressed?
▼
NO
YES
Is the disc drawn in again immediately after it is ejected?
YES
▼
Check CN1901 and SW1956.
Play mode is not available.
YES
▲
Is the play mode unavailable with either high reflecting disc
Proceed to the check item “Checking by using the test mode”.
or low reflecting disc?
NO
NO
▼
▼
Is the play mode unavailable only with the high reflecting disc?
▼
YES
YES
▼
Is the voltage at No.93 pin of IC1401 1.02 ± 0.3V in the test
Is the voltage at No.93 pin of IC1401 with a low reflecting disc loaded
mode state with a high reflecting disc loaded?
3.2V ± 0.3V (recordable) or 2.06V ± 0.3V (recording inhibited)?
YES
▼
▼
After readjustment, proceed to the check item “Normal reproduction”.
▼
NO
41
The play mode unavailable only with the low reflecting disc.
YES
NO
▼
Check SW1952A/B, mechanical unit switch circuit board and CN1901.
GX-900
Normal reproduction
Applicable when the E2-PROM value has been confirmed as normal in the test mode
▲
YES
Is initialization done properly for reproduction of a high reflecting disc?
Does the play time display count up properly?
NO
▼
NO
Check IC1201.
▼
▲
NO
Is the disc turning properly?
Does the lead-in switch turn on with the pickup at the
innermost track in the test mode?
(Is No.6 pin of IC1401 at “L”?)
GX-900
NO
▼
Check SW1953, soldered points in the mechanical switch
circuit board and around No.1 pin of CNP1901.
YES
▼
▲
NO
Is reading function attempted repeatedly to read the TOC section of
A new disc has no recording in the TOC section.
Replace it with a recorded low reflecting disc.
the low reflecting disc?
YES
▼
Check the position of the lead-in switch by selecting the lead-in
switch position measurement mode from the adjustment items for
the high reflecting disc.
Audio reproduction circuit
Applicable when no sound is produced although the play time display counts up properly during reproduction in the normal mode
NO
▲
Is the audio output waveform obtained at No.24 and 26 pins of IC1701?
17, 19 pins of IC1701.
YES
▼
NO
▲
Is the audio output waveform obtained at No.1 and 7 pins of IC3?
Check No.70 ~ 72, 74 pins of IC1201 and No.12, 16,
Check IC3.
YES
▼
Check the muting section of IC2.
42
GX-900
Recording/reproduction function
Load a low reflection disc and after confirming the audio output in the normal reproduction mode, execute recording/reproduction.
Check that the disc is not in the recording inhibited status.
▲
Check around IC1401 and CN1101.
▲
Check IC1201 for proper soldering.
▲
Check around IC5.
▲
Check around IC1701 and CN1501.
▲
▼
NO
▲
Does the recording function fail from the starting address?
Check the waveform and soldering of No.9 and 10 pins of
YES
Is an RF waveform available at No.1 pin of PT1201 or IC1201
YES
during reproduction after recording?
▼
NO
Does the level of No.3, 26 and 39 pins of IC1401 and No.9 and 19 pins of
NO
GX-900
CN1101 change between during recording and during reproduction?
YES
▼
Is an RF pattern provided at No.50 pin of IC1201?
▼
NO
YES
Check IC1300, Q1300 ~ 1303 and CN1300.
▼
Is an output waveform available at No. 1 and 7 pins of IC5
NO
while recording the LINE input in the normal mode?
▼ YES
Is an input waveform applied to No.3 and 5 pins of IC1701?
NO
▼ YES
Check between CN1701 and No.70 ~ 73 pins of IC1201.
Focus servo function does not work.
Is a correct waveform provided at No.27 and 28 pins of IC1101
NO
during the focus gain rough adjustment step in the test mode?
IC1101.
YES
▼
NO
▲
Has No.81 pin of IC1201 fall from “H” to “L”? Is a pulse
waveform provided at No.82 pin of IC1201?
▼
Check the waveform and soldering of No.8 and 9 pins of
IC1201.
YES
Check soldering and parts of IC1201
▲
Check soldering and parts of IC1601.
▲
NO
▲
Does the pulse waveform duty of No.18 and 19 pins of IC1201 change?
Check CN1101 and the pickup.
▼ YES
Does the waveform change at No.15, 16, 26, 27 pins of IC1601?
▼
YES
Does the waveform change at No.2 and 4 pins of CN1101?
▼ YES
OK
43
NO
NO
GX-900
Disc motor does not run.
NO
▲
Is a correct waveform provided at No.24 and 25 pins of IC1201
Check No.24 and 25 pins of IC1201 as well as soldering
and parts of the peripheral circuit.
during the focus gain rough adjustment step in the test mode?
YES
▼
NO
▲
Is a waveform provided at No.11 and 12 pins of IC1601 as
well as at No.1 and 2 pins of CN1603?
▼
Check the circuit boards of IC1601 and the complete disc
motor of CN1601 for soldering.
YES
Replace the disc motor as a complete unit.
GX-900
Tracking servo function does not work.
NO
▲
Is a correct waveform provided at No.17 and 18 pins of IC1601 as
Check No.20 and 21 pins of IC1201, IC1601 and CN1101
for soldering.
well as at No.1 and 3 pins of CN1101 during the tracking gain
adjustment step in the test mode?
▼
YES
Replace the pickup head
Slide servo function does not work.
NO
▲
Does the pickup move outward and inward when the R and
E button is pressed respectively in the test mode?
Check the waveform at No.22 and 23 pins of IC1201,
peripheral parts and soldering.
NO
▼
NO
▲
Does a change occur at No.22 and 23 pins of IC1201 when
Check the waveform at No.22 and 23 pins of IC1201,
peripheral parts and soldering.
R and E buttons are pressed?
YES
▼
Check IC1601 and 1602 for soldering.
▲
NO
▲
Does a change occur at No.13 and 14 pins of IC1601 and No.1 and
Check the connection section to the slide motor for
2 pins of CN1602 when the R and E buttons are pressed?
YES
▼
Does a voltage change occur at the + and - terminals of the
slide motor when the R and E buttons are pressed?
NO
soldering and broken wire.
YES
▼
Replace the slide motor.
44
GX-900
GOUT
ATTR
EFMAGI
EFMAGC
AGND
AVCC
EFMI
EFMO
RF2-1
ADAGI
ADAGC
48
47
46
45
44
43
42
41
40
39
38
37
EFM
AGC
RESISTOR & SW
IC1101 : IR3R55 [P.C.B. MD MAIN]
RF Signal Processing
POUT
■ IC DATA
36 ADIPI
RF1
1
RF2
2
RF3
3
RF4
4
REFI
5
REFO
6
RFADD
7
TCGI
8
AIN
9
28 AOUT
BIN 10
27 BOUT
35 ADIPO
DIFF
34 NC
DIFF
33 ADLPFO
ADIP
AGC
32 22KO
31 22KI
BIAS
30 WBO
HPF
LPF
29 TCGO
EIN 11
26 EOUT
LOGIC
25 FOUT
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15*
16*
17*
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33*
34*
35
36
37
38
39
40
41*
42
43
44
45
46*
47
48
45
Pin Name
RF1
RF2
RF3
RF4
REFI
REFO
RFADD
TCGI
AIN
BIN
EIN
FIN
BIAS
AVCC
VSTBY
XDISC
XSGAIN
AGND
DGND
DTEMP
LATCH
CLOCK
DATA
DVCC
FOUT
EOUT
BOUT
AOUT
TCGO
WBO
22KI
22KO
ADLPFO
NC
ADIPO
ADIPI
ADAGC
ADAGI
RF2-1
EFMO
EFMI
AVCC
AGND
EFMAGC
EFMAGI
ATTR
GOUT
POUT
13
14
15
16
17
18
19
20
21
22
23
24
BAIS
AVCC
XSTBY
XDISC
XSGAIN
AGND
DGND
DTEMP
LATCH
CLOCK
DATA
DVCC
GX-900
FIN 12
Function
RF signal input terminal 1 to input RF signal output from pickup
Amplifier input terminal for reference voltage
Amplifier output terminal for reference voltage
Output terminal for added resistance of RF1 ~ 4
Amplifier input terminal for track cross detect signal when in groove section
Amplifier (focus servo system) reverse input terminal for servo signal
Amplifier (focus servo system) reverse input terminal for servo signal
Amplifier (tracking servo system) reverse input terminal for servo signal
Amplifier (tracking servo system) reverse input terminal for servo signal
Bias input terminal
Power supply terminal for analog section
Output terminal for logic signal (Inverse STBY signal is output.)
Output terminal for logic signal (Inverse DISC signal is output.)
Output terminal for logic signal (Inverse SGAIN signal is output.)
Ground terminal for analog section
Ground terminal for digital section
Chip temperature detect terminal
Input terminal for latch signal
Input terminal for clock signal
Input terminal for serial data
Power supply terminal for digital section
Amplifier (tracking servo system) output terminal for servo signal
Amplifier (tracking servo system) output terminal for servo signal
Amplifier (focus servo system) output terminal for servo signal
Amplifier (focus servo system) output terminal for servo signal
Amplifier output terminal for track cross detect signal when in groove section
Comparator output terminal to make ADIP signal into binary value
Comparator input terminal to make ADIP signal into binary value
HPF amplifier output terminal for ADIP signal
LPF amplifier output terminal for ADIP signal
NC
Pre-amplifier output terminal for ADIP signal
AGC amplifier output terminal for ADIP signal
AGC smooth capacitor connecting terminal for ADIP signal
AGC amplifier input terminal for ADIP signal
RF1, RF2 differential signal
Pre-amplifier output terminal for RF signal
AGC amplifier output terminal for RF signal
AGC smooth capacitor connecting terminal for EFM signal
AGC amplifier input terminal for EFM signal
Terminal to attenuate 47, 48 pin output signal
Output terminal for RF1+RF2-RF3-RF4 signal when in groove section
Output terminal for added resistance of RF1 ~ 4 when in pit section
The * marked terminal is a terminal which is not connected externally (open terminal).
GX-900
FEMON
DADATA
ADDATA
DFCK
BCLK
LRCK
DGND
VDD3
DOUT
DIN
XO
XI
DGND
VDD1
VPO
VXI
CDBCLK
CDLRCK
CDDATA
TEST4
TEST3
TESO1
EXPORT1
EXPORT0
X700KO
IC1201 : LR376484 [P.C.B. MD MAIN]
ATRAC Encoder/Decoder
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
LR376484
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
EFMO
PLCK
ACRCER
TCRS
RAD0
RAD1
RAWEX
RARASX
RAA9
RAD3
RAD2
RACASX
DGND
RAOEX
RAA8
RAA7
RAA6
RAA5
RAA4
VDD2
RAA10
RAA0
RAA1
RAA2
RAA3
GX-900
TOTMON
TEMON
SBCK
SBO
SBSY
SFSY
FOK
SENSE
COUT
MCCK
DINTX
VDD1
DGND
RSTX
SYD0
SYD1
SYD2
SYD3
SYD4
SYD5
SYD6
SYD7
SYWRX
SYRDX
SYRS
EFMMON
AVCC
EFMI
AGND
AIN
EIN
TCG
BIN
FIN
VBAT
WBI
VDD1
DGND
TEST0
TEST1
TEST2
X176KO
FODRF
FODRR
TRDRF
TRDRR
SLDRF
SLDRR
SPDRF
SPDRR
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
No.
1*
2
3
4
5
6
7
8
9
10
11
12
13
14,15
16
Pin Name
EFMMON
AVCC
EFMI
AGND
AIN
EIN
TCG
BIN
FIN
VBAT
WBI
VDD1
DGND
TEST0,TEST1
TEST2
I/O
O
I
I
I
I
I
I
I
I
I
I
Function
EFM monitor output
Input terminal for EFM signal from RF amplifier
Focus error signal A
Tracking error signal E
Tracking cross signal
Focus error signal B
Tracking error signal F
Power supply voltage detect signal for constant voltage servo
ADIP wobble signal
Digital ground terminal
Test input terminal, connected to GND when in normal use
Test input terminal, to select encode/decode/servo mode or ATRAC mode.
Connected to GND in normal use
Clock output. f=176.4KHz (4fs)
Focus servo forward output. PWM
Focus servo reverse output. PWM
Tracking servo forward output. PWM
Tracking servo reverse output. PWM
Slide servo forward output. PWM
Slide servo reverse output. PWM
Spindle servo forward output or spindle serve output. PWM
Spindle servo reverse output or switching of spindle rotation forward/reverse
Address output to external D-RAM. ADR3
Address output to external D-RAM. ADR0 (LSB)
Address output to external D-RAM. ADR10 (MSB)
Power supply terminal for DRAM interface
17
X176KO
O
18
FODRF
O
19
FODRR
O
20
TRDRF
O
21
TRDRR
O
22
SLDRF
O
23
SLDRR
O
24
SPDRF
O
25
SPDRR
O
26
RAA3
O
27
RAA2
O
28
RAA1
O
29
RAA0
O
30*
RAA10
O
31
VDD2
32
RAA4
O
33
RAA5
O
34
RAA6
O
46
GX-900
IC1201 : LR376484 [P.C.B. MD MAIN]
ATRAC Encoder/Decoder
GX-900
No.
35
36
37
38
39
40
41
42
43
44
45
46
47*
48*
49*
50
51*
52*
53*
54*
55
56
57
58
59
60
61*
62
63
64
65
66
67
68
69
70
71
72
73
74
75*
76*
77*
78
79
80
81
82
83
84
85
86
87
88
89
90
91 ~ 96
97
98
99
100
Pin Name
RAA7
RAA8
RAOEX
DGND
RACASX
RAD2
RAD3
RAA9
RARASX
RAWEX
RAD1
RAD0
TCRS
ACRCER
PLCK
EFM0
X700KO
EXPORT0
EXPORT1
TESO1
TEST3
TEST4
CDDATA
CDLRCK
CDBCLK
VXI
VPO
VDD1
DGND
XI
XO
DIN
DOUT
VDD3
DGND
LRCK
BCLK
DFCK
ADDATA
DADATA
FEMON
TOTMON
TEMON
SBCK
SBO
SBSY
SFSY
FOK
SENSE
COUT
MCCK
DINTX
VDD1
DGND
RSTX
SYD0
SYD1 ~ SYD6
SYD7
SYWRX
SYRDX
SYRS
I/O
O
O
O
O
I/O
I/O
O
O
O
I/O
I/O
O
O
O
O
O
O
O
O
I/O
I/O
I/O
I/O
I/O
I
O
I
O
I
O
O
O
O
I
O
O
O
O
I
O
O
O
O
O
O
O
O
I
I/O
I/O
I/O
I
I
I
Function
Data output enable signal output to external D-RAM
Column address strobe signal output to external D-RAM
Data input/output with external D-RAM. D2
Data input/output with external D-RAM. D3 (MSB)
Low address strobe signal output to external D-RAM
Data write enable signal output to external D-RAM
Data input/output with external D-RAM. D1
Data input/output with external D-RAM. D0 (LSB)
Track cross signal
CRC error flag monitor output of ADIP
EFM PLL clock output during reproduction
EFM signal output during recording and C1F (C1 error flag) monitor output during reproduction
Clock output. f=705.6KHz. No clock output when RSTX=0.
Microporcessor expansion output port 0
Microprocessor expansion output port 1
Microprocessor expansion output port 2 when switching PLLLR.
Microprocessor expansion output port 3 when switching PLLOSC.
Microprocessor expansion output port 4 when switching EXTCLK.
CD data input for high speed dubbing. Microprocessor expansion output port 5 when switching.
CD LR clock input for high speed dubbing. Microprocessor expansion output port 6 when switching.
CD bit clock input for high speed dubbing. Microprocessor expansion output port 7 when switching.
PLL clock input for variable pitch.
PLL phase error output for variable pitch.
Oscillation circuit input. 33.8688MHz
Oscillation circuit output. 33.8688MHz
Digital input signal
Digital output signal
Power supply terminal for internal PLL
Output terminal for switching music data to Lch, Rch
Shift clock for music data
Clock for AD/DA converter digital filter. 256Fs
Voice data input
Voice data output
Focus error signal monitor output
Total signal monitor output
Tracking error signal monitor output
DIN sub-code reading clock. EIAJ CP-309 format
DIN sub-code serial data. EIAJ CP-309 format.
DIN sub-code block synchronous signal. EIAJ CP-309 format.
DIN sub-code frame synchronous signal. EIAJ CP-309 format.
Focus OK detect signal. "0": focus OK
Servo state detect signal. "1": Auto move, auto jump, auto focus being drawn in
Track cross signal output
Clock output for microprocessor. Clock output also when RSTX=0
Output terminal used to request interrupt into system control interface.
Chip reset input. Reset at "L" (Note)
Data bus terminal of system control interface (LSB)
Data bus terminal of system control interface.
Data bus terminal of system control interface. (MSB)
Input terminal for register write pulse of system control interface
Input terminal for register read pulse of system control interface
Input terminal for register selection of system control interface
(Note) Set RSTX to "L" when or after turning on the power supply.
47
GX-900
IC1401 : iX0290AW [P.C.B. MD MAIN]
MD System Microprocessor
Pin Name
NX
SBCK
LDVAR
ADIS
SFSY
LOADIN
ERROR
BYTE
CNVss
STID OUT
SEACH OUT
RESET
NC
Vss
MCCK
Vcc
P85
DINT
DSENSE
ST-ID
SERCH
MDRSW
FSW
VARI-PSW
P-DOWN
HD ON
LD+
LDCIN
INNER
DATA
LATCH
CLOCK
DSTB
MD DATA
K DATA
DSCK
4M/16M
R/P
FOK
PLL SEL
S2
S1
SYRS
SYRD
SYWR
SYS D7
SYS D6
SYS D5
SYS D4
SYS D3
SYS D2
SYS D1
SYS D0
I/O
O
O
O
O
O
I
I
I
I
O
O
I
I
I
I
I
I
I
O
I
O
I
O
O
O
I
I
O
O
O
O
O
I
I
I
O
I
O
O
O
O
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Function
Input/output port P96
LDVAR (Laser power adjustment output)
ADJS (for automatic adjustment step check)
LD SW CK input (interrupt input only when used individually)
ERR input (UNLOCK of monitor PLL)
GND
GND
ST-ID output
MD search output
RESET input
Clock output
GND
EXTAL (8.4672MHz)
+3.15V
DINT (interrupt input from MD•LSI)
DSENSE (servo sense input from MD•LSI)
ST-ID input (MD-ON)
CD search input (Synchro REC interrupt input)
MD RSW output
FSW1 (SW for power frequency switching)
Corresponding measure to variable pitch, provided (H)/ not provided (L)
P-DOWN (power failure detect)
HDON (Magnetic head current ON/OFF output)
LD+ (Loading motor + control output)
LD- (Loading motor - control output)
CIN (Track count signal input)
INN SW (Inner SW detect input)
R-DATA
R-LATCH
R-CLK
DSTB (System control communication possible and communication being executed)
MD DATA (MD data output)
K DATA (System control data input)
DSCK (System control communication clock input)
4M/16M DRAM select input
R/P output (REC/PLAY switching)
FOK (Focus servo state monitor input)
S2 output
S1 output
SYRS (MD-LSI register select signal output)
SYRD (MD-LSI read signal output)
SYWR (MD-LSI write signal output)
SYS D7 (Data bus 7)
SYS D6 (Data bus 6)
SYS D5 (Data bus 5)
SYS D4 (Data bus 4)
SYS D3 (Data bus 3)
SYS D2 (Data bus 2)
SYS D1 (Data bus 1)
SYS D0 (Data bus 0)
GX-900
No.
1*
2
3
4*
5
6
7
8
9
10
11
12
13*
14
15
16
17
18
19
20
21
22
23*
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
48
GX-900
IC1401 : iX0290AW [P.C.B. MD MAIN]
MD System Microprocessor
GX-900
No.
55*
56*
57*
58
59
60
61
62
63*
64
65
66
67
68*
69*
70
71*
72
73
74
75*
76*
77*
78
79
80
81*
82*
83*
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Pin Name
P37/A15
P36
P35
EEPRO
EPCS
EEPD
EEPK
Vcc
P30
GND
L3 DATA
L3 MODE
L3 CLK
P24
P23
PCNT0
PCNT1
LD ON
A/B
SBSY
DAP ON
DFS0
DFS1
DIG EX
DIG CD
XRST
AD MUTE
EMPH
DAMUT
MUTE
DOUTM
TEST2
TEST1
TEST0
AVCK3
AVCK2
AVCK1
DTEMP
MINF
TEST K1
TEST K2
GND
HINF
VREF
AVcc
S80
I/O
O
O
O
O
O
I/O
O
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
Function
EEPRO (E2PROM protect cancel)
EPCS (E2PROM chip selector output)
EEPD (E2PROM serial data output)
EEPK (E2PROM serial clock output)
+3.15V
GND
L3 DATA (soft serial communication, 2 modes provided, LSB first)
L3 MODE (soft serial communication, 2 modes provided, LSB first)
L3 CLK (soft serial communication, 2 modes provided, LSB first)
PCNT0 output
Input/output port
LDON output (H: ON)
ANLPTR output
ADPON output (for CK)
DAPON output (for CK)
DFS0 output
DFS1 output
DIG EX output (for CK)
DIG CD OUTPUT (for CK)
XRST (system reset output)
ADMUTE output (for CK)
EMPHA output (for CK)
DAMUTE output (for CK)
MUTE output
DOUTM output (for CK)
TEST2 (special mode select 2)
AVCK3 (special mode monitor input)
AVCK2 (AD/DA section 3.1V monitor input)
AVCK1 (DOUT section 5V monitor input)
DTEMP (temperature detect input)
MINF (for each disc type/REC input)
TEST K1 (test key input 1)
TEST K2 (test key input 2)
GND
HINF (mechanical unit position/head position)
+3.15V
+3.15V
Input/output port
49
GX-900
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
P44/CS0
P45/CS1
P46/CS2
P47/CS3
P50/WRL/WR
P51/WRH/BHE
P52/RD
P53/BCLK
P54/HLDA
P55/HOLD
P56/ALE
P57/RDY/CLKOUT
P60/CTS0/RTS0
P61/CLK0
P62/RXD0
P63/TXD0
P64/CTS1/RTS1/CTS0/CLKS1
P65/CLK1
P66/RXD1
P67/TXD1
P96/ANEX1
P95/ANEX0
P94/DA1
P93/DA0
P92/TB2IN
P91/TB1IN
P90/TB0IN
BYTE
CNVSS
P87/XCIN
P86/XCOUT
RESET
XOUT
VSS
XIN
VCC
P85/NMI
P84/INT2
P83/INT1
P82/INT0
P81/TA4IN
P80/TA4OUT
P77/TA3IN
P76/TA3OUT
P75/TA2IN
P74/TA2OUT
P73/CTS2/RTS2/TA1IN
P72/CLK2/TA1OUT
P71/RXD2/TA0IN
P70/TXD2/TA0OUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
GX-900
P07/D7
P06/D6
P05/D5
P04/D4
P03/D3
P02/D2
P01/D1
P00/D0
P107/AN7/K13
P106/AN6/K12
P105/AN5/K11
P104/AN4/K10
P103/AN3
P102/AN2
P101/AN1
AVSS
P100/AN0
VREF
AVCC
P97/ADTRG
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
P10/D8
P11/D9
P12/D10
P13/D11
P14/D12
P15/D13
P16/D14
P17/D15
P20/A0/(/D0/-)
P21/A1/(/D1/D0)
P22/A2/(/D2/D1)
P23/A3/(/D3/D2)
P24/A4/(/D4/D3)
P25/A5/(/D5/D4)
P26/A6/(/D6/D5)
P27/A7/(/D7/D6)
VSS
P30/A8(/-/D7)
VCC
P31/A9
P32/A10
P33/A11
P34/A12
P35/A13
P36/A14
P37/A15
P40/A16
P41/A17
P42/A18
P43/A19
IC2 : M30622M8-xxxFP [P.C.B. MD]
Main System Microprocessor (MD CPU)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Port
P96/ANEX1
P95/ANEX0
P94/DA1
P93/DA0
P92/TB2in
P91/TB1in
P90/TB0in
BYTE
CNVss
P87/Xcin
P86/Xcout
/RESET
Xout
Vss
Xin
Vcc
P85//NMI
P84//INT2
P83//INT1
P82//INT0
P81/TA4in
P80/TA4out
P77/TA3in
P76/TA3out
P75/TA2in
P74/TA2out
P73/TA1in
P72/TA1out
P71/TA0in
P70/TA0out
P67/TxD1
P66/RxD1
P65/CLK1
P64//CTS
I/O
I/O
I/O
I/O
I/O
I/O
O
I/O
I
I
I/O
I/O
I
O
I
I
I
I
I
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
I/O
I/O
O
I
I
I
Function
Name
/MUTE
Unused (GND)
Unused (GND)
Unused (GND)
Open
Open
LINE MUTE
Open
GND
GND
/RES
XOUT
GND
XIN
VCC
PU
DSTB
/PDN
6.5/5V
SYSO
SYSI
SYSCK
SYSCTL
Unused (GND)
Unused (GND)
Reset input
Ceramic lock 10MHz
GND level input
Ceramic lock 10MHz
Microprocessor power supply input
PU to Vcc
MD strobe input
Power failure detect (Power down)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
MD unit power supply switching
Unused (GND)
Unused (GND)
Data to MAIN CPU
Data from MAIN CPU
System command clock
System command control
50
GX-900
IC2 : M30622M8-xxxFP [P.C.B. MD]
Main System Microprocessor (MD CPU)
GX-900
No.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
51
Port
P63/TxD0
P62/RxD0
P61/CLK0
P60//CTS0,/RTS0
P57//RDY,CLKout
P56/ALE
P55//HOLD
P54//HLDA
P53/BCLK
P52//RD
P51//WRH,/BHE
P50//WRL,/WR
P47//CS3
P46//CS2
P45//CS1
P44//CS0
P43/A19
P42/A18
P41/A17
P40/A16
P37/A15
P36/A14
P35/A13
P34/A12
P33/A11
P32/A10
P31/A9
Vcc
P30/A8
Vss
P27/A7
P26/A6
P25/A5
P24/A4
P23/A3
P22/A2
P21/A1
P20/A0
P17/D15
P16/D14
P15/D13
P14/D12
P13/D11
P12/D10
P11/D9
P10/D8
P07/D7
P06/D6
P05/D5
P04/D4
P03/D3
P02/D2
P01/D1
P00/D0
P107/AN7
P106/AN6
P105/AN5
P104/AN4
P103/AN3
P102/AN2
P101/AN1
AVss
P100/AN0
Vref
AVcc
P97//ADTRG
I/O
O
I
O
O
O
I/O
I
O
I/O
I/O
I/O
I/O
I/O
I
I
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I/O
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I/O
I
I
I/O
Name
KDATA
MDDATA
DSCK
MD-ST
/MD-RES
SEARCH
PDOWN
MODEL
Ver
/LOADIN
VCC
GND
DGND
VREF
ADVCC
DITMUTE
Function
MD key data
MD data input
MD clock output
MD start (MD-ON)
MD reset output
Unused (GND)
Unused (GND)
Used at MD unit power failure
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Model input
Destination input
H-L: DISC IN
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Microprocessor power supply input
Unused (GND)
GND level input
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
Unused (GND)
GND level input for AD
Unused (GND)
Open
Open
Mute output to DIT
GX-900
PSEL
RSEL
ARF
DRF
IREF
DSLF
PLLF
EFM
PCK
AVDD2
AVSS2
SUBQ
SQCK
SSEL
FLAG6(RESY)
RESY
DEMPH
SUBC
SBCK
CLDCK
BLKCK
CRC
CLVS
IOSEL
SRDATAIN(PSEL)
78 76 44 46 45 47 48 52 53 50 51
15 14 80
69 69 68
55 56 62 13 67 66
70
78 79 80
9
57
DIGITAL DEEMPHASIS
4
TIMING
GENERATOR
VCO
PITCH CONTROL
5
18
DSL ¥ PLL VCO
SUB CODE
BUFFER
8 TIMES
OVER SAMPLING
DIGITAL FILTER
71
OUTPUT
PORT
FLOCK
TLOCK
BLKCK
SQCK
SUBQ
DMUTE
STAT
RST
SMCK
PMCK
TRV
TVD
PC
ECM
ECS
KICK
TRD
FOD
CLV
SERVO
DIGITAL
AUDIO
INTERFACE
I/O
O
O
O
I
I
O
I
I
I
O
O
O
O
I
O
I
O
I
O
O
O
O
O
O
O
O
O
O
1
3
2
23
24
6
64 65
72
73
74
75
AVSS1
OUTR
16
OUTL
29 26 21
AVDD1
40 42 11 12 41 30 31 28 27 22 25 54 61
IPFLAG
FLAG
PEAK DETECT
AUTO CUE
SENSE
WVEL
Name
BCLK
LRCK
SRDATA
DVDD1
DVSS1
TX
MCLK
MDATA
MLD
SENSE
DIGITAL
ATTENUATION
D/A
CONVERTER
TX
36
INTERPOLATION
SOFT MUTING
ECM
38
PWM
(R)
PC
/RFDET
PWM
(L)
LRCK
39
16K
SRAM
CIRC ERROR CORRECTION
DEINTERLEAVE
BCLK
BDO
SERVO
CPU
1-BIT DAC
SRDATA
35
DMUTE
37
VDET
VREF
KICK
TRV
TRCRS
SUB-CODE DEMODULATION
LDON
PLAY
/FLOCK
/TLOCK
TES
FBAL
TBAL
FOD
TRD
TVD
ECS
TOFS
TRVSTP(BYTCK)
34
A/D
CONVERTER
RFENV
SYNC INTERPOLATION
MICRO COMPUTER
INTERFACE
INPUT PORT
33
GX-900
32
TE
EFM DEMODULATION
10 43
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
7
BCLKIN(SSEL)
MDATA
MCLK
MLD
8
LRCKIN(MSEL)
X1
X2
MSEL
CSEL
PMCK
FCLK
SMCK
BYTCK
VCOF
CK384(EFM)
58 59 79 77 20 63 19 61 49 52
60
FE
OFT
17
SERVO
TIMING GENERATOR
VDD
VSS
DVDD1
DVSS1
/RST
/TEST
STAT
IC5 : MN662741RPB1 [P.C.B. CD]
Signal Processor & Controller
Function
Bit clock output for SRDATA
L/R identification signal output
H : L-ch audio data
L : R-ch audio data
Serial data output
Power supply for digital circuits
GND for digital circuits
Digital audio interface output signal
Microcomputer command clock signal input (Latches the data at a rising edge)
Microcomputer command data input
Microcomputer command load signal input
L : Load
Sense signal output (OFT, FESL, NACEND, NAJEND, SFG, NWTEND)
Focus servo pull-in signal
(L : Pull-in status)
Tracking servo pull-in signal
(L : Pull-in status)
Sub-code block clock signal
(f BLKCK =75Hz)
External clock input for sub-code Q register
Sub-code Q data output
Muting input
H : Mute
Status signal (CRC, CUE, CLVS, TTSTOP, FCLV, SQOK, FLAG6, SENSE, FLOCK, TLOCK)
Reset input (Reset when being at L for 472 ns or longer at IOSEL = L)
L : Reset
8.4672MHz clock signal output at MSEL = H
4.2336MHz clock signal output at MSEL = L
88.2kHz clock signal output
Traverse (Feed) forced feed output
3-State
Traverse (Feed) drive output
Spindle motor ON signal
L : ON
Spindle motor drive signal (Forced mode output)
3-State
Spindle motor drive signal (Servo error signal output)
Kick pulse output
3-State
Tracking drive output
Focus drive output
(+5)
(NC)
(NC)
(NC)
52
GX-900
IC5 : MN662741RPB1 [P.C.B. CD]
Signal Processor & Controller
GX-900
Pin No.
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
Name
VREF
FBAL
TBAL
FE
TE
RFENV
VDET
OFT
TRCRS
RFDET
BDO
LDON
TES
PLAY
WVEL
ARF
IREF
DRF
DSLF
PLLF
VCOF
AVDD2
AVSS2
EFM
PCK
TOFS
SUBC
SBCK
VSS
X1
X2
VDD
BYTCK
CLDCK
FCLK
IPFLAG
FLAG
CLVS
CRC
DEMPH
RESY
I/O
I
O
O
I
I
I
I
I
I
I
I
O
O
O
O
I
I
I
I/O
I/O
I/O
I
I
O
O
O
O
I
I
I
O
I
O
O
O
O
O
O
O
O
O
70
71
72
73
74
75
76
77
78
79
TEST
AVDD1
OUTL
AVSS1
OUTR
RSEL
CSEL
PSEL
MSEL
I
I
I
O
I
O
I
I
I
I
80
SSEL
I
IOSEL
Function
Reference voltage for D/A output section (TVD, ECS, TRD, FOD, FBAL, TBAL, TOFS)
Focus balance adjustment output
Tracking balance adjustment output
Focus error signal input
(Analog input)
Tracking error signal input
(Analog input)
RF envelope signal input
(Analog input)
Vibration detection signal input
H : Detect
Off track signal input
H : Off track
Track cross signal input
RF detection signal input
L : Detect
Drop out signal input
H : Drop out
Laser ON signal output
H : ON
Tracking error shunt signal output
H : Shunt
Play signal output
H : PLAY
(NC)
Double speed status signal output
L : Double speed
(NC)
RF signal input
Reference current input pin
Bias pin for DSL
(NC)
DSL loop filter pin
PLL loop filter pin
VCO loop filter pin
(NC)
Power supply for analog circuits (For DSL, PLL, A/D input blocks, and D/A output blocks)
(+5)
GND for analog circuits (For DSL, PLL, A/D input blocks, and D/A output blocks)
(GND)
EFM signal output At IOSEL = H : EFM signal output At IOSEL = L : 16.9344 MHz clock output (*1)
PLL extraction clock output
(f PCK = 4.32MHz)
(NC)
Tracking offset adjustment output
(NC)
Sub-code serial output
Clock input for sub-code serial output
(With pull-up resistor)
GND for oscillation circuit
Crystal oscillation circuit input pin
(f = 16.9344MHz, 33.8688MHz)
Crystal oscillation circuit output pin
(f = 16.9344MHz, 33.8688MHz)
Power supply for oscillation circuit
(+5)
At IOSEL = H : Byte clock signal output At IOSEL = L : Traverse stop signal output H : STOP mode (*1)
Sub-code frame clock signal output
(f CLDCK = 7.35kHz)
Crystal frame clock signal output
(f FCLK = 7.35kHz)
(NC)
Interpolation flag signal output
H : Interpolation
Flag signal output
(NC)
Spindle servo phase synchronous status signal outut
H : CLV
L : Rough servo
(NC)
Sub-code CRC check result output
H : OK
L : NG
(NC)
De-emphasis detection signal output
H : ON
(NC)
At IOSEL = H : Frame resynchronizing signal RESY output H : Synchronous L : Asynchronous
(*1)
At IOSEL = L : Error correction, and deinterleave RAM address reset signal FLAG6 output L : Address reset generated
Mode selector pin
(*1)
Test pin
(Normal : H)
(+5)
Power supply for analog circuits
(For audio output section) (Commonly used for L-ch and R-ch)
L-ch audio output
GND for analog circuits
(For audio output section) (Commonly used for L-ch and R-ch)
R-ch audio output
RF signal polarity specification pin When the bright level is “H”, RSEL = H When the bright level is “L”, RSEL = L
Crystal oscillation frequency specification pin (H : Crystal osillation frequency = 33.8688 MHz, L : Crystal osillation frequency = 16.9344 MHz)
At IOSEL = H : Test pin (Normally L)
At IOSEL = L : SRDATA input
(*1)
At IOSEL = H : SMCK pin output frequency selector pin H : SMCK = 8.4672MHz , L : SMCK = 4.2336MHz
At IOSEL = L : LRCK input
H : L-ch data, L : R-ch data
SMCK = Fixed at 4.2336 MHz
(*1)
At IOSEL = H : SUBQ pin output mode selector pin
H : Q-code buffer working mode
(*1)
At IOSEL = L : BCLK input Q-code buffer mode fixed
*1 These models used "L".
53
GX-900
51
52
53
54
55
56
57
58
59
60
61
62
P00/SEG32/DIG0
P01/SEG33/DIG1
P02/SEG34/DIG2
P03/SEG35/DIG3
P04/SEG36/DIG4
P05/SEG37/DIG5
P06/SEG38/DIG6
P07/SEG39/DIG7
P10/SEG40/DIG8
P11/SEG41/DIG9
P12/DIG10
P13/DIG11
P14/DIG12
P15/DIG13
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
P90/SEG16
P91/SEG17
P92/SEG18
P93/SEG19
P94/SEG20
P95/SEG21
P96/SEG22
P97/SEG23
P30/SEG24
P31/SEG25
P32/SEG26
P33/SEG27
P34/SEG28
P35/SEG29
P36/SEG30
P37/SEG31
79
80
IC11 : M38199EF [P.C.B. CD]
8 bit µ-COM (CD CPU)
30
29
28
27
26
25
P16/DIG14
P17/DIG15
P20/DIG16
P21/DIG17
P22/DIG18
P23/DIG19
P24
P25
P26
P27
VSS
X OUT
X IN
PB0/XC OUT
PB1/XC IN
RESET
P40/INT0
P41
P42/INT2
P43/INT3
P77/AN7
P76/AN6
P75/AN5
P74/AN4
P73/AN3
P72/AN2
P71/AN1
P70/AN0
PB3
PB2/DA
P57/SRDY3/AN15
P56/SCLK3/AN14
P55/SOUT3/AN13
P54/SIN3/AN12
P53/SRDY2/AN11
P52/SCLK2/AN10
P51/SOUT2/AN9
P50/SIN2/AN8
P67/SRDY1/CS/SCLK12
P66/SCLK11
P65/SOUT1
P64/SIN1
P63/CNTR1
P62/CNTR0
P61/PWM
P60
P47/T3OUT
P46/T1OUT
P45/INT1/ZCR
P44/INT4
24
31
23
100
22
32
VREF
21
99
20
33
AVSS
19
34
98
18
35
97
17
36
96
16
37
95
15
38
94
14
39
93
13
40
92
12
41
91
11
42
90
10
43
89
9
44
88
8
45
87
7
46
86
6
47
85
5
48
84
4
83
3
49
2
50
82
1
81
GX-900
P87/SEG15
P86/SEG14
P85/SEG13
P84/SEG12
P83/SEG11
P82/SEG10
P81/SEG9
P80/SEG8
PA7/SEG7
PA6/SEG6
VCC
PA5/SEG5
PA4/SEG4
PA3/SEG3
PA2/SEG2
PA1/SEG1
PA0/SEG0
VEE
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Port
P77
AN6
P75
P74
P73
P72
P71
P70
PB3
PB2
P57
P56
P55
P54
P53
P52
P51
P50
P67
P66
P65
P64
P63
P62
P61
P60
P47
Name
ADR
NTSC
OPSW
/CLSW
/STOP
/UPSW
/DWSW
/FLOCK
I/O
I
I
I
I
I
I
I
I
/TLOCK
/SCLK
SOUT
SIN
HSEL
/SCLKD
SOD
SID
/CS
/DCLK
DSO
DSI
STAT
I
O
O
I
O
O
O
I
I
I
O
I
I
/FLSW
/HRDY
I
I
Function
Tray table address detect SW
Video out PAL/AUTO/NTSC select detect
(Unused))
Tray open SW
Tray close SW
Tray table STOP position detect SW
Clamper up SW
Clamper down SW
Focus servo lock
Open
Open
Tracking servo lock
Serial clock to servo LSI
Serial out to servo LSI
Serial in from servo LSI (Q-code or SENSE)
Address/data select signal
(Unused)
Serial clock from decoder
(Unused)
Serial out to decoder
(Unused)
Serial in from decoder
(Unused)
System communication chip enable
Serial clock from system µ-COM
(Auto transfer)
Serial out to system µ-COM
Serial in from system µ-COM
Servo status signal
Not used
Not used
Feed origin SW
Decoder data out OK signal
(Unused)
54
GX-900
IC11 : M38199EF [P.C.B. CD]
GX-900
Pin No.
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
55
Port
P46
INT1
INT4
INT3
INT2
P41
INT0
/RESET
XCIN
XCOUT
XIN
XOUT
VSS
P27
P26
P25
P24
P23
P22
P21
P20
P17
P16
P15
P14
P13
P12
P11
P10
P07
P06
P05
P04
P03
P02
P01
P00
P37
P36
P35
P34
P33
P32
P31
P30
P97
P96
P95
P94
P93
P92
P91
P90
P87
P86
P85
P84
Name
I/O
BLKCK
I
/HINT
DEPH
/CSINT
RESET
XCIN
XCOUT
XIN
XOUT
GND
K3
K2
K1
K0
KD3
KD2
KD1
KD0
I
O
I
I
/DECRST
DRV
FCSG
TROP
TRCL
TBL +
TBL –
/MNRST
/MUTE
/PON
DMUTE
/MLD
CMDSEL
QSEL
DOSEL
/TSPD
VMUTE
I
O
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Function
Open
Q-code read OK signal
Open
Open
Decoder interrupt signal
(Unused)
De-emphasis control
(Unused)
System µ-COM data automatic transfer initialize, start signal
Reset
Open
Open
8 MHz
(MAIN CLOCK)
8 MHz
(MAIN CLOCK)
GND
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Decoder reset
(Unused)
Servo driver on
Focus gain high
(NC)
Tray open control signal
(implied clamper control)
Tray close control signal
Tray table revolution
Tray table brake
Open
Servo LSI reset signal
Open
Line mute
Servo LSI power ON control
Open
Digital mute
Microprocessor command store request
Serial 2 ^ µ-COM command
Serial 2 ^ Q-code reed
Decoder serial I/O out select
(Unused)
Tray table revolution speed control
(H : Low speed)
Video mute
(Unused)
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
GX-900
IC11 : M38199EF [P.C.B. CD]
Name
Port
P83
P82
P81
P80
PA7
PA6
VCC
PA5
PA4
PA3
PA2
PA1
PA0
VEE
AVSS
VREF
I/O
O
O
O
O
O
O
VCC
O
O
O
O
O
O
VEE
AVSS
VREF
Function
Not used
Not used
Not used
Not used
Not used
Not used
+5V
Not used
Not used
Not used
Not used
Not used
Not used
GND
GND (VSS)
+5V (VCC)
GX-900
Pin No.
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
IC8 : M38199EF [P.C.B. INPUT]
8 bit µ-COM (SYSTEM CPU)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Port
AN7
AN6
AN5
AN4
AN3
AN2
AN1
AN0
PB3
DA
AN15
SCLK3
SO3
SI3
AN11
SCLK2
SO2
SI2
P67
SCLK1
SO1
SI1
P63
P62
P61
P60
P47
Name
MSEL
SPEIN
DSEL
KEY4
KEY3
KEY2
KEY1
KEY0
I/O
I
I
I
I
I
I
I
I
FAN
THER
FLCLK
FLDATA
O
I
O
O
VPRT
TUCLK
TUDO
TUDATA
/STAD
SYSCK
SYSO
SYSI
TUMUTE
/AMPMUTE
CDCE
CDRES
MDCE
I
O
O
I
I
O
O
I
O
O
O
O
O
Function
MODEL/PRO LOGIC MODE DETECT (A-D)
SPECTRUM ANALYZER (BA3835F) IN (A-D)
MARKET SELECT IN
(A-D)
KEY 4 IN
(A-D)
KEY 3 IN
(A-D)
KEY 2 IN
(A-D)
KEY 1 IN
(A-D)
KEY 0 IN
(A-D)
OPEN
FAN CONTROL OUT
AMP THERMAL DETECT
SERIAL CLOCK FOR FL DRIVER M66004
SERIAL OUT FOR FL DRIVER M66004
OPEN
ABNORMAL VOLTAGE DETECT
LC72131/LC72720/M65853FP/LA2787/LV1017/LC75393/LC7536Y CLK OUT
LC72131/LC72720/M65853FP/LA2787/LV1017/LC75393/LC7536Y DATA OUT
LC72131/LC72720 DATA IN
STATION IN (TUNER)
[L : STATION AVAILABLE]
SYSTEM COMMAND CLOCK
SYSTEM COMMAND OUT
SYSTEM COMMAND IN
TUNER MUTE
[H : MUTE ON]
AMP MUTE
[L : MUTE ON]
SYSTEM COMMUNICATION CD CE
CD RESET
SYSTEM COMMUNICATION MD CE
56
GX-900
GX-900
No.
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
57
Port
P46
INT1
INT4
INT3
INT2
P41
INT0
/RESET
XCIN
XCOUT
XIN
XOUT
VSS
P27
P26
P25
P24
P23
P22
P21
P20
P17
P16
P15
P14
P13
P12
P11
P10
P07
P06
P05
P04
P03
P02
P01
P00
P37
P36
P35
P34
P33
P32
P31
P30
P97
P96
P95
P94
P93
P92
P91
P90
P87
P86
P85
P84
Name
MDRES
ACIN
PDN
I/O
O
I
O
REMO
STEIN
I
I
RESET
XCIN
XCOUT
XIN
XOUT
GND
SPEA
SPEB
SPEC
SPESEL
DLCE
KALATCH
FLRES
FLCE
TUCE
STLED
TMLED
/BC
TEST0
TEST1
DSEL0
DSEL1
PRON
SRON
/SMUTE
/A
/YMA
IN1B
IN1A
IN2A
IN2B
RECA
RECB
VSEL0
VSEL1
VCR
PBMUTE
RMUTE
REC
BIAS
DOLBY
TPEQ
SOL
CPM
CLOSE
OPEN
ENVA
ENVB
ENMA
ENMB
I
I
O
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
Function
MD RESET
POWER DOWN AC PULSE IN
MD POWER DOWN
OPEN
REMOTE CONTROL SIGNAL IN
TUNER STEREO/MONO DETECT
OPEN
RESET
32.768 kHz IN (SUB CLOCK)
32.768 kHz OUT (SUB CLOCK)
8 MHz IN (MAIN CLOCK)
8 MHz OUT (MAIN CLOCK)
GND
SPECTRUM ANALYZER (BA3835F)
LA2787/LV1017 CE
KARAOKE IC M65853 LATCH
FL DRIVER RESET
FL DRIVER CE
LC72131/LC72720/LC75393 CE
STANDBY LED ON
TIMER LED ON
PRO LOGIC IC CONTROL-BC
TEST PORT
TEST PORT
MD DIGITAL INPUT SELECT
MD DIGITAL INPUT SELECT
POWER RELAY CONTROL
SPEAKER RELAY CONTROL
SUB WOOFER MUTE
PRO LOGIC IC CONTROL-A
Y MERSION ON
4052 INPUT SELECT
4052 INPUT SELECT
4052 INPUT SELECT
4052 INPUT SELECT
4066 CONTROL
4066 CONTROL
LA7956 INPUT SELECT
LA7956 INPUT SELECT
VCR REC INHIBIT
DECK PLAYBACK MUTE
DECK REC MUTE
DECK AMP REC
DECK BIAS ON
DOLBY ON
TAPE EQUALIZER SELECT
DECK SOLENOID ON
DECK CAPSTAN MOTOR ON
TAPE LOADING MOTOR CLOSE
TAPE LOADING MOTOR OPEN
VR ENCODER A
VR ENCODER B
MD ENCODER A
MD ENCODER B
A OUT
B OUT
C OUT
SEL OUT
[ H : LED ON ]
[ H : LED ON ]
[ H : ON ]
[ H : ON ]
[ L : MUTE ON ]
[ H : ON ]
[ L : ON ]
[ H : INHIBIT]
[ H : 120 µ]
GX-900
Port
P83
P82
P81
P80
PA7
PA6
VCC
PA5
PA4
PA3
PA2
PA1
PA0
VEE
AVSS
VREF
Name
/HP
MIC
CASS
PLSW
CRO2
/IPRT
+5V
CLSW
RECINHF
RECINHR
OPSW
REEL
MUSIC
VEE
AVSS
VREF
I/O
I
I
I
I
I
I
I
I
I
I
I
I
Function
HEAD PHONE DETECT
[L : HP DETECT]
MIC DETECT
CASSETTE IN DETECT
DECK MECHA PLAY POSITION DETECT
CrO2 (70 µs) POSITION DETECT
AMP OVER CURRENT DC VOLTAGE DETECT
[L : ABNORMAL DETECT]
+5V
DECK CLOSE SW
REC INHIBIT FORWARD (SIDE-A)
REC INHIBIT REVERSE (SIDE-B)
DECK OPEN SW
REEL MOTOR PULSE DETECT
TAPE MUSIC SENSOR
GND
GND
+5V
GX-900
No.
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
58
GX-900
■ DISPLAY DATA
● V801 : 16-BT-63GK (V2959000)
%9
q
PATTERN AREA
GX-900
● PIN CONNECTION
Pin No.
1
2
Connection
F1
F1
3
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Pin No.
31
32
33
34
35
36
37
38
39
58
59
Connection
P9
P8
P7
P6
P5
P4
P3
P2
P1 16G 15G 14G 13G 12G 11G 10G 9G 8G 7G 6G 5G 4G 3G 2G 1G NP NP F2
F2
Note 1) F1, F2 ......... Filament
2) NP .............. No Pin
● GRID ASSIGNMENT
● ANODE CONNECTION
59
4
30
NP NP P35 P34 P33 P32 P31 P30 P29 P28 P27 P26 P25 P24 P23 P22 P21 P20 P19 P18 P17 P16 P15 P14 P13 P12 P11 P10
40
41
3) NC .............. No Connection
4) P1~P35 ....... Datum Line
42
43
44
45
46
47
5) 1G~16G ...... Grid
48
49
50
51
52
53
54
55
56
57
6
AM
ANT
M
60
M
M
LOADING MOTOR
6.5/4.75 ~ 5.25V
3.2V
IC1101
IR3R55
RF SERVO/
SIGNAL
CONTROL
6.5/4.75 ~ 5.25V
11
9
3.2V
3.2V
3.2V
D/A CONVERTER
A/D CONVERTER
3.2V
IC1801
NJM431U
IC1701
UDA1344
AUDIO OUT
AUDIO INPUT
VOLTAGE REGULATOR POWER
VOLTAGE REGULATOR POWER
IC1702
NJM431U
3.2V
4
13
BACKUP
20 ~ 23
RDS
IC4
LC72720NM
12
7
9
AM
STEREO
(J only)
DIGOUT
D.GND
DIGIN
BACKUP
PDOWN
RESET
MD-ST
DSCK
SERCH
KDATA
MDDATA
DSTB
D.GND
D.GND
D.GND
D.GND
DVDD
DVDD
PSWCK
LOADSW
AVCC
L.IN
AA.GND
R.IN
AD.GND
L.OUT
AA.GND
R.OUT
CN1501
q
w
e
r
t
y
u
i
o
!0
!1
!2
!3
!4
!5
!6
!7
!8
!9
@0
@1
@2
@3
@4
@5
@6
@7
@8
+5.0
TUNER
28P FFC
XL3
AM STEREO
IC3
TA2040AF
4.332MHz
XL4
5
MECHANISM
6.5/4.75 ~ 5.25V
2
RDS
(B,G only)
IC1401
IX0253AW
MD SYSTEM
MICROCOMPUTER
IC1402
S29294A
EEPROM
EXT.
PLL
6.5/4.75 ~ 5.25V
DIGITAL
3.2V
IC1202
IX2474AF
4M BIT
D-RAM
IC1201
LR376484
ENDEC/ATRAC
XL1201
33.8688MHz
TUNER CONTROL
TUNER.L
TUNER.R
F
M903
LOAD SW1956
REC SW1955
PLAY SW1954
LEAD IN SW1953
DISC ID
WRITE PRO
E-F
RF1-RF4 SIGNAL
IC1601
BA5984FP
MOTOR DRIVER
LASER
DIODE
RF4
RF3
RF2
RF1
E-F SIGNAL A-B SIGNAL
2
5
L6
L.P.F
L5
L.P.F
E
SW1952
E
B
A
FOCUS
TRACKING
F
MONITOR DIODE
LIGHT
RECEIVING
SECTION
RF
LIGHT
RECEIVING
SECTION
ERROR,
SIGNAL
PICKUP UNIT
13
6 7 13 15
19
22
18
IC1
LA1838
17
16
AM/FM IF
MPX
3
MD
14
AM OSC 30
AM IN 27
FM IN 1
D
M902
SLED
MOTOR
M901
SPINDLE
MOTOR
RECORDING
HEAD
18
PLL
IC2
LC72131M
20
Q1
IF AMP
9
C
IC1300
TC74ACT02F
HEAD
DRIVE CIRCUIT
1
FM VT
FM OSC
1
CERAMIC
FILTER
L2
10.7MHz
XL1
2
AM VT 18
PK2
AM
COIL PACK
3
GND
4
PK1
8
5
FM
ANT
CERAMIC
FILTER
L1
4
B
~
A
G
H
GX-900
1
■ BLOCK DIAGRAM
61
A
B
C
D
E
F
G
H
GX-900
■ BLOCK DIAGRAM
1
CD
TRAVERSE UNIT
TP1
A
36
C
HEAD
AMP
D
IC1
AN8806SB
+5
E
33
F
34
2
2
73
75
LASER
LD
GND
44
10
CASSETTE MECHA
IC10
15
35
B
DECK
CD DIGITAL OUT
MUTE
Q9,10
32
5
CD
R/P HEAD
+
3 27
13 29
| 30
17
19
|
25
-
SERVO SIGNAL
PROCESSOR
DF.DAC
IC5
30
|
41
9,1
59
Q1
LD
DRIVE
7,3
R/P
SWITCH
IC2
8
16
9
|
11
18
12
58
1
13
24
41
44
XL1
16.9344MHz
PB LEVEL
VR1,4
14
23
DOLBY
R/P AMP
IC6
48
37
IC8 73 REC
E+
18,19
4
10
17
62,67,68
8,11,13,23,
38
Q8
Q10
Q9
5
6
TRACKING
FOCUS
BIAS
VR2,3
IC8 71 PBMUTE
CD CPU
IC11
BIAS
POWER
Q13,14,17,
18,34
ACT
MOTOR
DRIVE
3
4
12
13
19
27
|
29
19
|
22
35
26
57,58 59,60 1,3-7
IC8 76 TPEQ
LOAD
M
CD CONTROL
2
65
MOTOR
DRIVE
IC1
10
Q5,15
Q8
5
IC8 80 OPEN
6
IC8 79 CLOSE
IC 95 OPSW
LOAD OUT
5.0V
10
11
+6
LOAD IN
CDB
IC8 92 CLSW
ON/OFF
R,REC
IC8 94 RECINHR
F,REC
IC8 93 RECINHF
CASS
IC8 87 CASS
CrO2
IC8 89 CrO 2
+5
LIMIT SW
SOL
1,9
SENSOR
OUT
3
MOTOR
DRIVE
IC4
7
3
SOL
DRIVE
Q3,4
IC8 77 SOL
MOTOR
DRIVE
Q2,11
IC8 78 CPM
IC8 96 REEL
1,9
MOTOR
DRIVE
IC3
7
Q1
+5V
5.0V
PLAY
IC8 88 PLSW
MTR
MTR
5
M
LOADING
M
ROTARY
SPEEDB
UNLOAD
LOAD
ADDRESS STOP
M
UP/DOWN
SPEEDA
CD MECHA
62
6
+B
IC8 74 BIAS
69
70
+5
4
IC8 73 REC
IC8 75 DOLBY
BIAS
OSC.
L1,Q12
+6
FEED
IC8 97 MUSIC
Q16
BIAS
TRAP
L2,3
64
30
|
41
BUSS
BUFFER
IC7
20
21
3
M
3
IC8 76 TPEQ
25
26
SPINDLE
IC8 72 RMUTE
EXL2
8MHz
39
M
TAPE PB
29
27
-5
TRK
IC8 76 TPEQ
21,22,24-28 7,10,14,15
MON
FCS
Q35,36
VR5,6
11
26
9
26
E HEAD
TAPE REC
REC LEVEL
63
TAPE SPEED
VR7
A
B
C
D
E
F
G
H
GX-900
■ BLOCK DIAGRAM
1
IC11
3
SMUTE
IC8 59
AUX
12
1
TUNER
14
5
IN
AUX
REC
TAPE
5.0V
HP,IC8 85
13
3
12
1
INPUT
SWITCH
IC3
15
2
INPUT
SWITCH
IC4
14
5
MUTE
Q801
802
IC21
13
3
3
5
1
7
11
4
IN2A,IN2B
IC8 64,65
2
9,10
TUNER
5,6
15
34
IC8 49,17,16
TUCE,TUDO,TUCLK
Q6,15
RECA
YMERSION
TONE.CONT.
IC814
23
SYSO
2
14
6
32.768MHz
XL401
39
36
37
62
63
66
67
64
65
41 - 44
61
16
17
49
Q33
THER
15
24
90
Q4
58
57
SYSTEM CPU
25
26
85
IC8
71
|
80
87
|
89
92
|
97
CD CONTROL
29
48
49
12
13
18,19,30,34
32
50
51
Q803
DECK CONTROL
81,82
4-8
TIMER
D803
STANDBY
D802
U801
REMOCON
K9V
D211
5.0V
5.0V
SMUTE
AMPMUTE
IPRT
9.0V
+HB
Q206
Q26
59
20
|
22
DSEL0
IC8 55
DSEL1
IC8 56
K9V
11
27
28
30
-27V
Q25
Q204
9.0V
12V
-27V
T202
-HB
D212
+LB
SPON
12V
PRON
+12M
HPIN
F217
Q218
+12M
RY203
-LB
ACIN
Q207
-12V
-12V
13
|
16
FL
DRIVER
IC815
1
|
12
14
|
64
IC8 15
VPRT
FL DISPLAY
V801
1
2
FAC1
58
59
FAC2
F201
32
83,84
D213
MDB
CDB
VOL.
TUNER CONTROL
ROTARY
ENCODE
SW825
64
6
5.0V
VPRT
8MHz
XL402
IN2A
/PDN
Q7
IC8 57
PRON
10 - 13
38
u5.6V
RY203
U5.6V
SPEANA
IC26
28
Q401
+3.3V
DECK CONTROL
8
XL1
16
5
K9V
/RES
Q6
IC1
SUBB
u5.6V
9.0V
15
19
T203
D215
u5.6V
SYSI
IN2B
37
38
39
42
RY201
-27V
RECB
10
IC2
31
M30624FG
36
12
35
13
18
SYSCK
TUDO
32
12
SPON
IC8 58
-12V
TUCE
33
SYSCTL
CONT
34
TUCLK
50
Q804
CD
DIGITAL OUT
7
IC401
SW
IC8 29
ACIN
8
BACKUP
5
TREBLE
VR802
12V
Vd+6.5/5V
DIGITAL IN
13
+12M
MDB
CB403
PROTECTION
2
8
3
5
INIB
4
-
20
BASS
VR804
IC5
1
7
RECA
MDM-98A
19
SPEAKER
+
MUTE
Q1,2
INIA
3
24
4
6
22
18
IC8 66
TAPE REC
LPF
5
7
R
28
3
1
27
L
IC3
26
25
R
24
23
L
22
IC4
21
5
6 9
20
19
18
Vd+6.5/5V
17
16
15
IC4
14
1
2
13
13
12
3
4
11
11
10
9
8
7
6
5
4
3
DIGITAL IN
2
1
IC8 90
IPRT
IC8 67
11
12
-
AMPMUTE
IC8 24
12,13
CD
+
IC8 11
THER
24 25 26
RECB
TE201
RY201
14
15
±HB
±LB
Q5,7
MD
IC201
18
22
17
14
36
3
8
TAPE PB
JK803
MUTE
Q201
202
7
1
VOLUME LEVEL
CONTROL
GEQ
IC7
Q29,30
REC
SWITCH
IC5
5
3
MUTE
Q23.24
21
28
49
64
INIA,IN1B
IC8 62,63
4
9
HP JACK
POWER AMP
HP AMP
IC10
9,10
Q31,32
CD
SW
OUT
MUTE
Q21
1
KEY CONT
SW801-807,812-818
820-824,826-836
MD
JOG
VP
-27V
ROTARY
ENCODE
SW801
65
A
B
C
D
E
F
G
H
GX-900
■ MD TEST POINT WAVEFORM
1
PLAY
Stopped
NORM: 100M S/s
Stopped
NORM: 1k S/s
PIT PLAY
Stopped
NORM: 1M S/s
1997 / 08 / 04 09:30:15
T
CH1 500mV
AC 10:1
CH1 2V
DC 10:1
500ns/div
Filter
SMOOTH OFF
BW FULL
1
CH2 2V
DC 10:1
CH3 200mV
AC 10:1
CH4 5V
DC 10:1
1ms/div
Filter
SMOOTH OFF
BW FULL
TP1201
1
TP1201
1 (EFMMON)
T
--0.000V
0.000V
0.000V
6
TP1207
(TEMON)
1
Detay
0.000 000 000s
T
Hold Off
TP1209
(TOTMON)
2
CH2 500mV
AC 10:1
CH1 2V
DC 10:1
500us/div
2
TP1121
(T+)
1
----0.000V
0.000V
6
TP1207
3
TP1123
(T-)
CH2 2V
DC 10:1
CH3 200mV
AC 10:1
CH4 5V
DC 10:1
Hold Off
16 TP1601
Filter
SMOOTH OFF
BW FULL
8
BCLK
Record Len
Main
2K
Zoom
20
Detay
0.000 000 00s
Hold Off
MIN
17
Trigger
NORMAL
EDGE
CH1
LRCK
3
CH3 200mV
AC 10:1
CH4 200mV
DC 10:1
5s/div
CH1 2V
DC 10:1
CH2 2V
DC 10:1
500ns/div
Filter
SMOOTH ON
BW FULL
Offset
0.000V
0.000V
--25.000V
CH1
CH2
CH3
CH4
Filter
SMOOTH OFF
BW FULL
T
21
15
TP1600
1
Record Len
Main
500
Zoom
10
Detay
3
Detay
0.000 000 000s
0.00s
Hold Off
Hold Off
MIN
MIN
Trigger
AUTO
EDGE
CH2
16
Trigger
AUTO
EDGE
CH2
TP1601
Offset
0.000V
0.000V
0.000V
0.000V
CH1
CH2
CH3
CH4
DFCK
Record Len
Main
10K
Zoom
20
Hold Off
TP1205
1997 / 08 / 04 10:35:14
T
2
Record Len
Main
10K
Zoom
100
TP1209
PLAY
Stopped
NORM: 100M S/s
1997 / 08 / 04 14:44:01
CH2 1V
DC 10:1
TP1207
Offset
0.000V
0.000V
--0.000V
CH1
CH2
CH3
CH4
T
6
Detay
0.000 00s
7
20
Offset
0.000V
0.000V
0.000V
0.000V
CH1
CH2
CH3
CH4
1
4
T
3
Trigger
NORMAL
EDGE
CH1
DADATA
2
Trigger
AUTO
EDGE
CH2
1ms/div
2
MIN
2
T
18
Hold Off
T
Detay
0.000 000s
3
0.00s
Stopped
NORM: 200 S/s
1
Record Len
Main
10K
Zoom
100
Filter
SMOOTH OFF
BW FULL
1994 / 08 / 04 13:37:11
TP1201
Offset
CH1
CH2
CH3
CH4
T
2us/div
MIN
3
GROUP PLAY
T
1
CH3 52V
DC 10:1
Record Len
Main
10K
Zoom
100
Detay
(SLD-)
CH2 5V
DC 10:1
4
Stopped
NORM: 1M S/s
Filter
SMOOTH OFF
BW FULL
Offset
0.000V
0.000V
0.000V
0.000V
CH1
CH2
CH3
CH4
TP1207
TP1600
(SLD+)
CH1 5V
DC 10:1
Filter
SMOOTH OFF
BW FULL
2
15
1997 / 08 / 04 11:23:12
T
1s/div
T
Trigger
AUTO
EDGE
CH2
1997 / 08 / 04 11:43:05
T
CH1 500mV
AC 10:1
8
TP1205
(TCRS)
CH4 5V
DC 10:1
MIN
3
GROUP PLAY
Stopped
NORM: 2M S/s
6
Hold Off
MIN
Trigger
NORMAL
EDGE
CH1
CH3 5V
DC 10:1
1
Detay
0.000 00s
7
CH2 2V
DC 10:1
TP1212
Record Len
Main
10K
Zoom
100
2
Record Len
Main
500
Zoom
10
9
Offset
0.000V
0.000V
--0.000V
CH1
CH2
CH3
CH4
Offset
CH1
CH2
CH3
CH4
CH1 2V
DC 10:1
PLAY
Stopped
NORM: 100M S/s
1997 / 08 / 04 14:19:52
T
1997 / 08 / 04 13:35:24
T
20
MIN
BCLK
Trigger
NORMAL
EDGE
CH1
2
4
4
PIT PLAY
Stopped
NORM: 50M S/s
CH1 1V
DC 10:1
4
TP1134
(ADLPFO)
Stopped
NORM: 500 S/s
CH2 2V
DC 10:1
CH1 2V
DC 10:1
20us/div
Filter
SMOOTH OFF
BW FULL
T
Offset
0.000V
0.000V
0.000V
0.000V
Detay
0.000 000 0s
5
TP1135
(WBO)
9
6
TP1212
(FEMON)
CH2 2V
DC 10:1
CH3 2V
DC 10:1
CH4 2V
DC 10:1
2s/div
T
1
CH2 2V
DC 10:1
5us/div
17
LRCK
T
CH1
CH2
CH3
CH4
1
Record Len
Main
10K
Zoom
100
Hold Off
MIN
3
11
1997 / 08 / 04 16:59:39
18
Trigger
AUTO
EDGE
CH1
SPDRF
CH2 2V
DC 10:1
500ns/div
Filter
SMOOTH OFF
BW FULL
22
DiN
T
Record Len
Main
500
Zoom
50
1
Detay
0.000 000 000s
Hold Off
DADATA
Hold Off
MIN
MIN
Trigger
NORMAL
EDGE
CH1
2
Offset
0.000V
0.000V
0.000V
0.000V
CH1
CH2
CH3
CH4
Detay
0.000 000 00s
0.00s
SPDRR
Offset
0.000V
0.000V
0.000V
0.000V
Record Len
Main
5K
Zoom
50
Detay
10
CH1 2V
DC 10:1
Filter
SMOOTH OFF
BW FULL
Offset
0.000V
0.000V
0.000V
0.000V
CH1
CH2
CH3
CH4
MIN
Trigger
NORMAL
EDGE
CH1
CH1 2V
DC 10:1
Filter
SMOOTH OFF
BW FULL
2
Hold Off
2
DIGITAL REC
Stopped
NORM: 100M S/s
1997 / 08 / 04 10:03:45
T
TP1207
Record Len
Main
10K
Zoom
100
1
PLAY
Stopped
NORM: 100M S/s
1997 / 08 / 04 12:58:01
T
CH1
CH2
CH3
CH4
4
POWER OFF^STANDBY
T
1997 / 08 / 04 11:56:15
T
23
DOUT
Trigger
NORMAL
EDGE
CH1
2
4
AC POWER ON
Stopped
NORM: 50M S/s
GROUP PLAY
Stopped
NORM: 1k S/s
1997 / 08 / 04 11:55:38
T
POWER OFF^STANDBY
4
TP1134
T
5
CH2 2V
DC 10:1
CH1 2V
AC 10:1
20us/div
Filter
SMOOTH OFF
BW FULL
CH1
CH2
CH3
CH4
1
Offset
0.000V
0.000V
0.000V
0.000V
9
12
TP1212
Hold Off
2
TP1122
(F+)
T
2
1s/div
CH1 2V
DC 10:1
17
Offset
CH1
CH2
CH3
CH4
------0.000V
1
Record Len
Main
10K
Zoom
100
200us/div
T
24
VOUTL
VOUTR
CH1
CH2
CH3
CH4
19 ADDATA
Detay
0.000 000 s
Hold Off
2
67
MIN
MIN
Trigger
NORMAL
EDGE
CH1
Offset
0.0000V
0.000V
0.000V
0.000V
Record Len
Main
10k
Zoom
100
Hold Off
Trigger
AUTO
EDGE
CH2
FOK
Offset
0.000V
0.000V
0.000V
0.000V
1997 / 08 / 04 09:47:21
Filter
SMOOTH OFF
BW FULL
Detay
0.000 000 00s
MIN
4
66
CH1
CH2
CH3
CH4
Record Len
Main
5K
Zoom
50
AC POWER ON
6
LRCK
Hold Off
3
14
CH1 500mV
DC 10:1
5us/div
T
0.00s
13 DSENSE
CH2 2V
DC 10:1
T
Filter
SMOOTH OFF
BW FULL
Detay
MIN
Trigger
NORMAL
EDGE
CH1
CH4 5V
DC 10:1
1
Record Len
Main
10K
Zoom
100
TP1135
CH3 5V
AC 10:1
Filter
SMOOTH OFF
BW FULL
Detay
0.000 000 0s
5
CH2 2V
AC 10:1
Stopped
NORM: 5M S/s
1997 / 08 / 04 10:12:30
T
CH1 1V
DC 10:1
1 kHz, 0dB, PLAY
ANALOG REC (Non signal)
Stopped
NORM: 100M S/s
1997 / 08 / 04 13:57:22
T
1
Trigger
NORMAL
EDGE
CH1
A
B
C
D
E
F
G
H
GX-900
■ PRINTED CIRCUIT BOARD (Foil side)
1
Note : y ~ o
q to @4 : TEST POINT WAVEFORMS (See page 66 ~ 67)
Connect an oscilloscope to the test points (y ~ o) through a
filter as shown below.
100K
test points
oscilloscope
MD MAIN PWB-A (BOTTOM VIEW)
270P
MD MAIN PWB-A (TOP VIEW)
1
28
CNW2002
BL
BL
CW1903
MAGNET HEAD(32)
RECORD
2 1
1
28
2
R1808 R1805
TP1511
TP1411
14
13
EFMMON
(TP1201) 1
11
10
5
1
TP1217
R1417
R1510
R1515
C1506
R1511
1
80
TP1600
R1429
C1205
TP1209
TP1207
TP1216
IC1101
TP1130
20
20
25
30
35
40
45
TP1117
TP1210
TP1205
10
TP1202
10
13
C1602
1
6
TP1136
C1603
5
TP1119
1
12 TP1108
C1101 R1103
TP1109 TP1100
TP1124
C1102
TP1102
TP1111
TP1101
TP1110
R1606
IC1202
TP1103
TP1121
11
15
16
20
22
7
R1616
CN1401
17
23
22
12
1
CN1603
C1613
C1604
15
6
7
9
2
29
TP1801
3
2
TP1605
CN1604
2
1
TP1122
TP1116
TP1105
C1610
8
28
C1103 TP1104
TP1107
TP1115
30
TP1214
TP1206
TP1112
5
21
R1222
TP1900
TP1208
TP1118
15
48
TP1603
TP1602
51
50
1
TP1607
TP1203
26
C1400
TP1400
14
15
C1208
55
TP1200
C1106
45
C1105
C1104
TP1137
60
TP1213
25
24
IC1201
TP1401
C1619
C1611
TP1129
TP1127
30
C1209
R1618
R1106
R1107
R1110
TP1402
R1217
65
15
TP1406
TP1126
70
10
5
C1401
IC1601
R1109 R1111
40
TP1403
75
XL1201
C1115
C1117
TP1128
35
80
5
TP1135
36
37
85
R1211
TP1125
C1112 R1108
90
C1607
CHASSIS GND
95
TP1211
TP1212
76
C1600
1
C1203
5
81
R1605 R1601
FOUT
(TP1130)
R1100
75
TP1120
L1200
C1616
70
18
19
21
20
16
CN1602
TP1601
TP1413
TP1901
EOUT
(TP1129)
28
65
100
TP1134
TP1133
25
55
TP1201
C1109
C1100
R1101
20
TP1706
TP1408
TP1409
C1120
C1110 C1111
15
TP1407
60
51
TP1131
R1102
TP1704
TP1412
C1108
C1202
L1100
R1203
R1207
R1206
R1204
R1205
R1210
C1711
TP1278
2
5
R1223
C1710
TP1414
50
10
R1201
C1712
C1716
R1414
90
R1105
TP1132
CN1101
R1202
C1700
TP1701
TP1405
IC1401
R1214 R1215
R1221
C1200
R1200
C1709
C1713
C1701
85
4
1
3
TP1404
45
GND
(TP1125)
C1206
5
95
40
C1119
C1201
L1201
10
TP1415
C1116
L1101
R1427
15
100
2
IC1702
TP1218
20
TP1700
TP1705
R1404
1
25
L1503
R1707
30
31
R1112
R1806
5
R1428
R1531
TP1505
Q1701
C1406
R1407
R1409
TP1501 TP1503
TP1523
TP1703
TP1702
R1410
C1107
R1811
R1809
TP1525
C1502
R1512
R1516
TP1510
TP1508
35
C1113
C1114
4
TP1204
TP1524
R1513
28
C1505
TP1507
TP1502
R1401
IC1801
25
TP1410
TP1303
C1800
5
TP1509
C1407
R1700
S
20
TP1520
R1530
R1525
R1526
R1527
R1528
R1529
TP1500
R1522
R1521
Q1801
TP1514
D1301
Q1302
1
TP1113
C1601
15
TP1504
TP1800
4
R1424
R1426
R1212
C1207
R1219
R1600
TP1516
R1535
D
S
TP1302
Q1804
C1801
R1430
IC1402
C1210 C1204
R1620
R1301
C1304
Q1403
Q1802
3
8
1
R1208
C1612
R1617
D
1
C1404
G
10
TP1512
C1608
S
G
C1411
R1420
R1425
R1423
R1209
C1615
TP1515
C1508
TP1517
TP1606
C1405
R1412
R1405
C1402
R1411
C1403
D
C1805
C1409 R1422
C1410
L1600
C1301
C1303
C1302
R1802
R1803
R1614
R1612
R1520
R1408
Q1401
R1406
R1416
R1419
R1421
4
G
5
CHASSIS GND
R1415
R1709
R1710
TP1300
C1300
14
10
1
TP1521
TP1506
TP1522
TP1518
TP1215
R1413
R1402
C1715
8
Q1300
2
Q1301
Q1303 TP1301
CN1501
TP1519
C1803
R1801
R1400
R1444
C1705
R1706
R1304
10
C1706
C1708
R1705
IC1300
Q1800
R1403
14
CN1300
R1804
R1807
L1701
1
TP1513
D1300
1
C1118
C1702
Q1402
R1702
D1401
IC1701
R1701
R1704
R1703
20
C1707
L1700
5
L1300
Q1400
C1408
Q1700
R1713
15
5
Q1500
Q1702
R1711
28
3
C1802
R1708
R1712
25
C1509
R1532
C1501
C1703
R1518
C1704
C1511
C1714
R1519
R1517
C1503
Q1805
R1514
7
L1301
L1501
C1606
Q1806 Q1803
C1804
TP1604
1
TP1123
TP1106
8
CW1901
2
4
1 2
RE
M902
MD SLED MOTOR
68
6
1
3
5
CN1901
MD PICKUP UNIT
R1904
FLEXIBLE
PWB
R1903
SW1953
LEAD IN
SW1954
PLAY
SW1955
RECORD
R1902
BL
SW1952
DISC MEDIA
WRITE PRO
R1901
1 2
RE
1 2
BL
RE
BL
SW1956
LOADING
MD MECHANISM SWITCH PWB-B
M901
MD SPINDLE MOTOR
M903
MD LOADING MOTOR
69
A
B
C
D
E
F
G
H
GX-900
1
P. C. B. MD
(Lead Type Device)
5
4
1
5
4
8
FROM : INPUT (1)
SYSCTL
SYSCK
SYSI
SYSO
/RES
/PDN
DGND
u5.6V
(Surface Mount Device)
8
W1
14
8
50
51
1
7
FROM : MD MAIN
31 3
0
80 81
1
10
0
1
8
20
11
GND d
DIG in
1
16
30
10
15
30
1
1
FROM: INPUT(1)
16
15
3
P. C. B. MD
AGND
AGND
AGND
AVCC
PSWCK
D6.5/5V
GNDd
GNDd
MDDATA
SEARCH
MD—ST
PDOWN
DIGin
DIGout
ROUT
LOUT
RIN
LIN
/LOADSW
D6.5/5V
GNDd
GNDd
DSTB
KDATA
DSCK
/MD—RES
BACKUP
GNDd
y
ROUT
AGND
LOUT
AGND
RIN
AGND
LIN
12V
—12V
+B
GND
GND
FROM : MAIN (1)
u
13
12
2
1
TUL
E
TUR
12V
TUMUTE
TUCE
TUDATA
TUCLK
TUDO
STAD
STEIN
24
1
16
9
8
FROM : INPUT (2)
P.C.B. TUNER
P.C.B. TUNER
(Lead Type Device)
4
AM
GND
FM
CIRCUIT CHANGES BY MARKET.
X3
X4
IC3
IC4
Q4
D6 ~ 8, 10
L7 ~ 9
C68, 71 ~ 74
C46, 52 ~ 54
C29
C42 ~ 51, 55, 56
C67, 69, 70
R33 ~ 38
R54
R25
R39
J21
J1, 40, 44
5
U, C, R, T, L, A
X
X
X
X
X
X
X
X
X
O
X
X
X
X
O
X
X
X
B, G
X
O
X
O
X
X
O
O
X
O
X
O
X
O
O
X
O
X
J
O
X
O
X
O
O
X
X
O
X
O
X
O
X
X
O
X
O
Point y (Pin20 of IC2)
0V
H : 0.1 µsec/div
V : 2V/div
H : 0.1 µsec/div
DC range
1 : 1 probe
DC range
1 : 1 probe
0V
O : USED
X : NOT USED
70
6
Point i (Pin13 of IC2)
V : 2V/div
H : 50 nsec/div
DC range
1 : 1 probe
Point u (Pin12 of IC4)
V : 2V/div
71
0V
A
B
C
D
E
F
G
H
GX-900
(Lead Type Device)
P.C.B. CD (Surface Mount Device)
FROM: MOTOR UNIT
(LOADING)
FROM: PICK UP HEAD
18
21
80
20
40
8
5
1
31
30
80
81
1
10
0
41
1
8
7
14
1
50
51
7
1
w
8
TX
GND
+5
q
14
GND
GND
+B
60
FROM: MOTOR UNIT
(ROTARY)
9
12V
-12V
L
AGND
R
DGND
U5.5V
DSO
/CS
/CDRES
DSI
/DCLK
VSEL
AGND
AGND
FROM: UP/DOWN SW
FROM: MAIN(1)
FROM: INPUT(2)
3
9
FROM: INPUT(1)
TU UP SW
COM
TU DOWN SW
61
1
1
ROTARY+
ROTARYADRESS SW
ADRESS SW
STOP SW
STOP SW
4
FROM: MOTOR UNIT
(SPINDLE & FEED)
15
16
LIMITSW
LIMITSW
FEEDFEED+
SPDSPD+
19
1
30
VC
VCC
E
D
A
B
C
F
GND
LD
VR
PD
FCS+
TRK+
TRKFCS-
LOAD SW
LOAD SW
UNLOAD SW
UNLOAD SW
LOAD MOTOR+
LOAD MOTOR-
2
4
36
P.C.B. CD
1
1
5
0V
72
6
Point q (Pin59 of IC5)
Point w (Pin39 of IC11)
V : 5V/div
H : 50 nsec/div
V : 2V/div
H : 50 nsec/div
DC range
1 : 1 probe
DC range
1 : 1 probe
0V
73
A
B
C
D
E
F
G
H
GX-900
1
P.C.B. INPUT (1)
(Lead Type Device)
#36
W8
P. C. B. INPUT ( 2 )
TO : MD
(Lead Type Device)
#31
W2
(Lch)
W6
W17
#41
SUBWOOFER
OUT
(Lch)
(Rch)
9
#37
1
W18
W5
TO : DECK
TAPE SPEED ADJ.
PB LEVEL ADJ.
#30
W3
TO : DECK
HP.GND
HP.R
HP.L
E
TONE.RIN
TONE.LIN
E
TONE.ROUT
TONR.LOUT
W6
E+
ERch+
RchLchLch+
AGND
DGND
U5.6V
BIAS ADJ.
DGND
REM
SUB+5V
VREF
KEY1-1
KEY0
VOL A IN
VOL B IN
STANBY
TIMER
5.0V
FLRES
FLCE
FLCLK
FLDAT
FLGND
VP
FL1
FL2
DGND
FROM : OPERATION(2)
10
18
9
1
OUT
1
AUX
8
IN
12V
AGND
-12V
KEY1
KEY1-1
KEY2
KEY3
KEY4
DGND
4
#22
TO : OPERATION(3)
W12
-LB
KGND
FAN
SUBE
PRON
SUBB
ACIN
PREOC
AGND
PREOL
DGND
PREOR
IPRT
SRON
VPRT
THER
UGND
MUTE
FAC1
FAC2
12V
-12V
-27V
26V
+12M
KGND
-LB
#17
TO : MAIN(1)
TO : MAIN(1)
W14
5
74
#16
W15
W16
#15
6
TO : MD
(Rch)
75
TO : MAIN(2)
TO : MD
W402
DIGITAL
IN
W401
MA
MB
DGND
+MCR
PLAY-SW
5V-SEBSOR
SENSOR-OUT
+SOL
CRO2
PACK
F.REC
NC
R.REC
GND
DIGIN
#29
#39
+5
GND
DOUT
(Rch)
MDINL
E
MDINR
E
MDLOUT
E
MDROUT
–12
+12
(Lch)
OPEN SW
CLOSE
OPEN
SYSCTL
SYSCK
SYSO
SYSI
MFRES
PDN
DGND
CLOSE.SW
12V
AGND
-12V
W4
TO : INPUT (2)
TO : CD
10
FROM : INPUT (1)
#34
W1
5V
DGND
DSEL0
DESEL1
VSEL0
VSEL1
/VCR
12V
1
FROM : TUNER
HP.GND
HP.R
HP.L
E
TONE.RIN
TONE.LIN
E
TONE.ROUT
TONR.LOUT
+12V
N. C.
N. C.
N. C.
DSEL1
DSEL0
GND
5V
REC LEVEL ADJ.
5V
HPIN
HP.GND
MUTESW
YMA
E
E
E
E
+12V
MDJA
DGND
DGND
U5.6V
3
5V
HP.R
HP.L
TUNE.RIN
TONE.LIN
TONE.ROUT
TONE.LOUT
-12V
5V
MDJB
STEIN
STAD
TUDATA
TUCLK
TUDO
TUCE
TUMUTE
12V
TUR
E
TUL
2
FROM : OPERATION(3)
12V
-12V
L
E
R
DGND
U5.6V
SYSI
CDCE
CDRES
SYSO
SYSCK
VSEL
AGND
AGND
TO : DECK
FROM : CD
A
B
C
D
E
F
G
H
GX-900
1
P.C.B. INPUT (1)
P. C. B. INPUT ( 2 )
2
8
5
1
4
8
1
9
16
1
8
14
16
9
1
8
1
24
9
16
1
48
37
12
13
36
25
8
7
1
64
33
5
1
4
49
16
32
3
8
48
17
81
80
0
10
51
1
50
31
30
t
4
1
5
8
4
Point t
e
r
CH1 : Collector of Q19
CH2 : Anode of D11
H : 0.5 sec/div
5
V : 2V/div (CH1)
V : 2V/div (CH2)
DC range
1 : 1 probe
(This waveform is not available by pushing the power switch ON and OFF.)
Point r (Pin39 of IC8)
Point e (Pin37 of IC8)
V : 2V/div
H : 20 µsec/div
V : 2V/div
H : 50 nsec/div
DC range
1 : 1 probe
DC range
1 : 1 probe
CH 1
CH 2
0V
With the POWER ON,
disconnect the A/C power
cord. Reconnect the A/C
power cord and the above
waveforms will start.
0V
76
6
Disconnect the
power cord from
the AC outlet.
77
A
B
C
D
E
F
G
GX-900
1
DISC
CHANGE
DISC3
DISC2
DISC1
W803
A
W
DGND
KEY0
2
P.C.B. OPERATION(2) (Lead Type Device)
T
E
Y
R
DGND
KEY0
TO: OPERATION(2)
P.C.B. OPERATION(1)
33
64
32
1
VOLUME
W803
TO: OPERATION(1)
3
P.C.B. OPERATION(2) (Surface Mount Device)
P.C.B. OPERATION(4)
MD EDIT
DIRECTION
4
T
E
T
E
(Lead Type Device)
DELETE
A
PAUSE/ENTER
W
MD
EJECT
SW819
TAPE
EJECT
DGND
NC
KEY4
TO: OPERATION(3)
P.C.B. OPERATION(4)
W802
5
78
6
FROM: INPUT(1)
REM
VREF
KEY0
VOLBIN
TIMER
/FLRES
FLCLK
FLGND
FL1
DGND
OPEN/
CLOSE
(Lead Type Device)
SUBGND
SUB+5V
KEY1-1
VOLAIN
STNBY
Vd+5V
/FLCE
FLDAT
VP
FL2
P.C.B. OPERATION(1)
79
H
A
B
C
D
E
F
G
H
GX-900
1
P.C.B. OPERATION(3)
(Lead Type Device)
P.C.B. MAIN(1)
NC
VREF
HPIN
HPR
HPGND
HPL
MuTESW
NC
NC
NC
YMA
T-RIN
E
T-ROUT
E
T-LOUT
E
-12V
+12V
D+5V
MDJA
MDJB
DGND
1
12
24
13
W
INPUT
MD REC/
PAUSE
SET CHARACTER
W202
REPEAT RANDOM
W205
TIME
1
#12
9
TO: MD
MUSIC B. BOOST
#13
YMERSION
2
FROM: MAIN(3)
MDGND
MDGND
MDB
KEY1
KEY1-1
KEY2
KEY3
KEY4
DGND
Q
CDAC2
CDAC1
FAC2
FAC1
FROM: INPUT(1)
TO: MAIN(5)
FROM: INPUT(1)
PHONES
BASS
DGND
NC
KEY4
-27V
-12V
-HB
-LB
TRAC
E
-LB
KGND
+12M
LB
-27V
-12V
12V
FAC2
FAC1
3
W802
W810
TO: OPERATION(4)
Q218
Q204
STANDBY/ON
TO: CD
TREBLE
CHARACTER
+
–
W201
MODE
#11
AUTO/ TAPE REC/ DOLBY
MANUAL PAUSE
NR
CDGND
CDGND
CDB
J923
DISPLAY MEMORY
BL
1
AMPMUT
UGND
THER
VPRT
SRON
IPRT
PREOR
DGND
PREOL
AGND
PREOC
FROM: INPUT(1)
P.C.B. OPERATION(3)
22
4
L
R
FRONT
SPEAKERS
5
80
6
81
A
B
C
D
E
F
G
H
GX-900
■ PIN CONNECTION DIAGRAM
1
● ICs
P.C.B. MAIN(6)
P.C.B. MAIN(2)
NJM78L05A
FROM: POWER CORD
M5237L
1:OUTPUT
2:COMMON 1
2 3
3:INPUT
µPC4570HA
µPC1330HA
BA15218N
1:INPUT
2:COMMON
3:OUTPUT
1
TA8409S
LB1641
10
9
9
8
STK496-420Y
22
2 3
1
1
1
1
1
µPD4066BG
TC74HC125AF
TC74HC04AF
µPC4570G2
BA3835S
AC1
TC4052BF
TA2040AF
TC74VHC153F
5
AC2
2
LC72720NM
13
11
9
8
8
GY
4
9
BR
LC72131M
14
16
7
20
8
1
18
1
1
1
12
24
10
1
1
LA1838
LA6541D
ACIN
SUBB
PRON
SUBE
AN8806SB
M66004MASP
YSS247-D
19
36
12
64
30
24
1
1
1
1
LC75393E
CXA1897Q
TO: MAIN(3)
32
18
15
36
3
25
37
48
1
48
24
49
13
64
M38199EFFP
M30624FG
MN662741RPB1
60
FROM: INPUT(1)
41
80
33
61
40
81
80
21
100
17
12
1
16
● Diodes
1SS355
1SS380
MA8039-H
MA8047-H
MA8051-H
MA8056-M
1SS133
1SS270A
MTZJ13.0B
MTZJ27.0D
BR
HAC
LAC
E
E
E
LAC
HAC
Anode
E
E
-LB
-HB
-12V
-27V
CDAC2
CDAC1
FAC2
FAC1
MA8056-L
MA8062-M
MA8068-L
MA8068-M
MA8091-H
MA8091-M
MA8100-L
MA8100-M
S1VB20
D3SBA20
D5SB20
Anode
–
–
+
Cathode
Cathode
+
W203
5
GY
● Transistors
#10
TO: MAIN (1)
FROM: MAIN(1)
2SA933S (Q, R)
2SC1740S (R, S)
DTA114ES
DTC114ES
TO: MAIN (2)
#9
W204
TO: MAIN (1)
2SA893 (D, E)
2SB647 (C, D)
2SC535 (A, B, C)
2SC1815 (Y)
2SC1890A (D, E)
2SC2878 (A, B)
2SC4208A (Q, R, S)
2SD1938 (S, T)
DTA114EKA
DTA144EKA
DTC114EKA
DTC124EKA
DTC144EKA
DTC143XKA
DTC143TKA
2SB1565 (E, F)
2SD2394 (E, F)
2SD2396 (J, K)
2SB1237 (Q, R)
2SD1858TV2 (Q, R)
C
B
C
82
6
83
E
E
C
E
B
B
BC
E
E
31
1
20
P.C.B. MAIN (3)
4
50
32
1
P.C.B. MAIN (5)
51
C
B
30
A
B
C
D
E
F
G
H
I
J
K
GX-900
■ SCHEMATIC DIAGRAM (MD MAIN)
IC1202 : IX2474AF
4M Bit D-RAM
q to @4 : TEST POINT WAVEFORMS (See page 66 ~ 67)
1
MD MAIN PWB-A
TP1209
PLCK
ACRCER
RAD0
TCRS
RAD1
RAWEX
RARASX
3V
1.56V
0V
3V
1.1V
1.1V
A9 2V
TP1206
TP1208
TP1205
R1215
1M
C1207
1
C1208
12P
(CH)
XL1201
33.8688MHz
R1221
10K
R1219
10K
TP1211
NC
NC
NC
2
CN1604
TRY-
PLAY:0V
REC:1.5V
8
C1603
820P
28
+
3
2
1
1.6V
R1618
15K
I/O4
GND
TP1703
TP1705
BCK
L3DATA
L3MODE
L3CLK
WS
VSSD
SYSCLK
DATAI
DATAO
TEST2
TEST3
VDDD
VADCP
TEST1
OVERFL
VADCN
VREFA
VINR
MP1
9
DIGITAL
INTERFACE
VINR
8
21
MC1
20
MP5
L3-BUS
INTERFACE
13
14
MC2
MP2
15
MP3
MP4
12
SYSCLK
24
VOUTR
DSP FEATURES
L3DATA
3.17V
0V
3.17V
1.55V
C1713
0.01
0V
0V
1V
1.57V
1.57V
3.2V
0V
AVDD
AVSS
1.6V
0V
VINL
VDDA
VSSA
18
16
17
19
VOUTL
DAC
26
C1711
47/4
1.5V
3.17V
3.17V
C1715
0.01
0V
3.2V
0V
TP1704
TP1706
0V
0V
3.2V
1.4V
1.5V
0V
3.2V
1.4V
28
27
22
23
VSSO VDDA(DAC) VSSA(DAC) Vref(D)
25
VDDO
L3CLK
L3MODE
R1710
680K
C1716
47/4
DIN
C1710
10/16
C1712
10/16
R1535
47
3.2V
0V
4
3
2
1
IC1801
XC62EP32
REGURATOR
0V 5
0.1V
R1522
220
CNW2002
TP1514
TP1515
TP1516
TP1517
TP1518
TP1519
R1807
27K
C1801
10
C1800
220/4
R1521
6.8K
R1514
1K
3.3V
3.2V
RESET
5V
0V
STID
DSCK
SERCH
KDATA
MDDATA
DSTB
TP1702
5.4V
Q1702
2SA1162 G
0.7V
5.4V R1711 R1712
4.8V
12
12
R1707
1K
R1708
27K
C1714
1
TP1800
2
0V
1
3.1V
R1804
390
2.4V
Q1800
RNC1407
BACKUP
C1508
0.047
Q1500
RNC1407
3.18V
3 0.1V
2
1 0V
TP1500
TP1501
TP1502
TP1503
TP1504
TP1505
2
0V
1
LOADIN
PDOWN
C1503
0.33
R1525 3.3K
R1526 1K
R1527 8.2K
R1528 8.2K
R1529 8.2K
R1530 220
R1531 220
R1517
10K
R1518
10K
R1520
10K
C1509
0.047
VREF3.2V
R1809
1
R1806
1
Q1804
2SA1314 C
4.8V
R1801
270
D.GND
TP1508
TP1509
TP1801
PCNT0
3.1V 3
Q1803
RN1406
2
0V
1
R1808
1.8K
Q1805
2SA1314 C
C1804
2.2
P.GND
2
0V
R1532 1K
L1503 4.7uH
R1515 1.8K
3
1
TP1511
TP1512
TP1513
TP1520
TP1506
TP1521
TP1507
TP1522
TP1523
TP1524
TP1525
L1501
1uH
C1501
1
R1803
100K
TP1510
5V
4.3V
5V
R1802
220K
C1803
100/10
EPCS
5
ADC
DECMATION FILTER
DAC
R1704
C1707 820
1
R1700
39K
3.2V
3.18V
3.08V
0V
3.15V
VDDO
VOUTR
1.2V
1.1V
R1430
10K
PCNT0
Q1801
2SA1162 G
0V
EEPK
PRO
DATAO
BCK
WS
DATAI
R1519 120
3
SK 4
0V
3.2V R1425
6 DATA CS 3
0V 7 GND VCC 2 3.2V 100K
0V
C1409
8 PRTCT NC 1
0.1
0V
UDA1344
TP1415
0V
SYSD5
SYSD6
SYSD7
SYWR
S2
S1
SYRS
SYRD
0V
0V
0V
3.2V
0V
0V
0V
R/P
2.3V
0V
0V
5 DI
11
0dB/6dB
switch
NOISE SHAPER
BACKUP
3.1V
3.2V
VSSD
4
INTERPOLATION FILTER
0.15V
Q1400
RNC1404
Q1402
RN2404
0V
VSSO
VREFD
C1704
47/4
AA.GND
Q1701
RNC1404
IC1402
S29294A
EEPROM
DFCK
I/O1
CAS
DADATA
ADDATA
LRCK
BCLK
A9
RAS
WE
I/O2
OE
I/O3
A0
2.2V
2.4V
A1
A7
A8
3.15V
EMPH
ADMUT
3.2V DOUTMT
MUTE
3.2V
3.2V DAMUT
AVCK3
TP1407 3.2V TEST0
TP1408 3.2V TEST1
TP1409 3.2V TEST2
VREF3.2V
R1701
30K
C1702
0.01
0V
PCNT0
3
2.1V
1 0V
1
0V
10
Vref(A)
6
R1709
39K
R1706
1M
Q1700
2SC2412 KR
IC1702
NJM431U 3.2V 5.4V
R1702 REGULATOR
1K 2.46V
3
1
3.85V
R1703
2
3.3K
AA.GND
R1417
10K
2.3V
R1424
10K EEPD
3
2
3.15V
Q1403
RN2404
TP1607
3
2
VDDD
VADCN
DC-CANCELLATION FILTER
R1811
1
0V
0V
NC
NC
NC
NC
R1421
10K
R1423
10K
10K
1.8V
1.8V
AVCK2
DTEMP
AVCK1
TP1406
FOK
PLL SEL
4M/16M
DSTB
0.8V
2.2V
0.2V
R1705
39K
L1701
10uH
R1805
270
C1615
0.0015
SLDRR
SLDRF
2
3
0V
1
0V
2
3
7
TP1701
C1802
10
R1616
6.8K
1.6V
1.6V
1.6V
0V
C1706
0.01
C1700
47/4
L1700
10uH
R1420
10K
R1422
10K
1.6V
3.2V
C1408
0.022
VREF
LD+
LD-
C1611
0.0082
3.18V
5V
SPDRR
SPDRF
C1705
0.047
AA.GND
Q1802
RNC1407 2
C1411
330P
(CH)
3.2V
Q1401
1
RNC1404
STID
0V
0V
VINL
R1713
100K
28 27 26 25 24 23 22 21 20 19 18 17 16 15
C1708
0.01
D1401
SB00703Q
TP1410
SYSD4
DATA
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
1
1 2 3 4 5 6 7 8 9 10 11 12 13 14
3
R1406
100K
5
1.7V R1419
R1415
10K
R1416
10K
1.4V MINF
0V
HINF
GND
TP1404 3.2V TEST-K
TP1405 3.2V TESTK1
VREF
SBO
AVCC
CIN
INNER
CLOCK GENERATOR
0V
24
C1701
47/4
3
R1617
6.8K
+
R/P
PLAY : 3.15V
REC : 0V
SK
ADC
0V 1
C1612
8200P
VCC
+
3.2V
KDATA
DSCK
0V
29
2V
30
3.2V
0V
R/P
6
4
1.6V
LD+
LD-
MODE DECODER
LOGIC
2
0V
0V
27
+
HDON
CS
VDDA(ADC) VSSA(ADC) VADCP
TP1700
56 0V
NC 55 0V
SYSD0 54 0V
0V
SYSD1 53
SYSD2 52 0V
SYSD3 51 0V
OUTPUT BUFFER
DO
1
20
NC
Vcc
GND
ADDRESS
DECODER
IC1701 : UDA1344
A/D & D/A Converter
0V
26
1.6V
-
26
27
28
C1616
100/10
FODRR
FODRF
-
+
C1601
820P
R1600
6.8K
MUTE
+
VARI-P SW
P-DOWN 3.2V
BANK 1
DATA RESISTER
3.2V
A2
A6
2
17 18 19
SLP
C1610
4.7
+
-
+
-
-
-
-
24
8
7
1.6V 25
1.6V
25
5 DI
DI
EFMO
Q1806
RN1406
R1516 1.8K
L1600
1uH
R1512 47
R1513 47
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
DIGOUT
GND
DIGIN
BACKUP
PDOWN
RESET
MD-ST
DSCK
SERCH
KDATA
MDDATA
DSTB
D.GND
D.GND
D.GND
D.GND
DVDD
DVDD
PSWCK
LOAD SW
AVCC
L IN
AA.GND
R IN
AD.GND
L OUT
AA.GND
R OUT
1
P85
A-6
28
CN1501
R1510
8.2K
R1511
8.2K
C1511
22P
(CH)
C1506
100P
(CH)
C1502
220P(CH)
2
TRY+
1.6V
3.15V
FSW NC 3.2V
MDDATA
0V
ST-ID
SERCH
MDRSW
6 DO
SK 4
TP1214
1
DSENSE
CLOCK
0V
24
DINT
7 GND
BANK 2
VOUTL
A3
A5
3
16
NC 63 0V
3.2V
VCC 62
3.2V R1426 1K
EEPK 61
0V R1427 1K
EEPD 60
3.2V
EPCS 59
0V
R1428
EEPRO 58
1K
NC 57 0V
16 OE
8 PROTECT
CS 3
WRITE
PROTECTION
PROTECT
C1703
0.047
1
23
R1601
6.8K
3.2V
3.2V
3.1V
Data Output
Buffer
MEMORY ARRAY
R1214
10K
55 0V
58V
54
0V
53
0V
52
58V
51
C1210
22P
(CH)
VREF
1
1.6V
22
1.6V
MCCK
VCC
NC 1
22
L1201
0.47uH
VCC
A4
4
11 12 13 14 15
R1444
100
I/O
Selection
VBB
VCC 2
1.1V
1.8V
1.5V A9
5
68 0V
TP1412
3.2V
L3CLK 67
3.2V TP1413
L3MODE 66
TP1414
3.2V
L3DATA 65
C1410
GND 64 0V
Sense Amp.
TP1210
2V
3V
1.1V
0.8V A0
6
2.1V SPP
2.1V SPN
29
-
VSS
NC
Column Decoder
DOUT
RAA9
RAD3
RACASX
RAD2
1.1V
1.5V
1.2V
2.4V
2.2V
0V
1.3V
3.2V A3
1.2V A2
2.4V A1
7
LDON
TP1411
Row Address
Buffer
R1212
47
R1222
10K
FEMON
SBCK
TOTMON
TEMON
SBSY
SBO
FOK
SFSY
SENSE
MCCK
COUT
VDD1
DINTX
SYD0
RSTX
DGND
DGND
RAA6
1.3V
1.7V
23
C1209 R1217
12P(CH) 150
1.56V TP1207
1.8V
3.16V
0V
0V
0V
0V
1.5V R1209
0V 100
3.1V C1205
1.5V 1
3.17V
3.17V
0V
0.5V
0.4V
0.6V
SYD1
SYD2
SYD3
RAA5
RAA7
RAA8
RAOEX
8
2.1V SLN
R1620
15K
+
—
TP1605
C1600
1 SPN
SPP
SLP
SLN
M
-
2.3V
C1613
0.0015
TP1604
9
RVS
FWD RVS
SPTP1603
30
R1605
10K
CN1603
TRDRR
TRDRF
SP+
21
3.2V
C1602
820P
R1606
10K
2
11
10
1.6V
23
IC1401
IX0290AWZZ
MD SYSTEM
MICROCOMPUTER
3.18V
1.44V
LATCH
)
C1406
R1412 0.022
10K
TT+
F+
F1
2
C1607
1
C1604
820P
1
+
+
—
20
+
M
16
+
19
SLD+
SLDTP1601
TP1602
12
+
+
CN1602
+
2
+
2
18
+
13
+
1
17
14
+
-
M
1
2.2V
0V
+
+
-
TP1600
2.2V
15
16
RESET
NC
R/P
-
7
C1619
330P
(CH)
2.2V
18
MINF
PLAY DISC : 2.2V
REC DISC : 0.1V
CNVSS
STID OUT
17
R1410
3.3K
LD+
LD-
IC1601
BA5984FP
MOTOR DRIVER
2.2V
16
19
0V
20
0V
21
0V
22
R1409
1K
FP F+
FN FTP T+
TNT-
3.2V
3.2V
0V
C1405
680P
R1411
1K
R/P
C1403
R1407
0.047
100K
R1401
1.5K
C1608
100/10
-
15
M903
LOADING
MOTOR
0V 14
1.5V
15
(
MD MECHANISM SWITCH PWB-B
M901
SPINDLE
MOTOR
13
INNSW
+
—
C1206
0.0012
R1429
47K
XRST 80
0V
DIGCD 79
0V
DIGEX 78
0V
DFS1 77
3.2V
DFS0 76
3.2V
NC DAPON 75
0V
SBSY 74
0V
73
A/B
3.1V
LDON 72
NC PCNT1 71 0V
3.1V
PCNT0 70
NC 69 0V
SEACH OUT
3.2V
0V
LOADING
0.1V
3
2.6V
4
2.6V
5
0.1V
6
0V
7 GND
C1401
0.022
C1606
10
LOAD IN
ERROR 3.1V
BYTE
12
LOADIN
MINF
L1301
47uH
SW1956
LOADING
M902
SLED
MOTOR
5
0V 6
TP1303
C1404
0.022
C1304
10
TP1606
LDVAR
ADJS NC 3.2V
SFSY 0V
0V 10
0V
11
LEAD IN
TO CHASSIS GND
SBCK
4
R1408
3.3K
R1404
1K
HINF
TP1402
TP1403
2V
R1402
1K
R1403
1K
MINF
HINF
0V 1
0V
2
0.2V
3
7
0V 8
0V 9
R1400
2.7K
TP1400
TP1401
NC
A9 15
DQ0~DQ3
Memory
Cell
IC1402 : IX2474AF
EEPROM
IC1701
UDA1344
AD/DA CONVERTER
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
HDON
Q1303
2SK1473
CN1401
C1400
0.022
8
1.56V
5.2V
VCC 14
2.6V
13
0.1V
12
11 1.56V
2.6V
10
0.1V
9
TP1302
EFMO
C1402
680P
5
2.6V 1
2.6V 2
D
R1904
820
SW1955
RECORD
R1211
220
VREF3.2V
C1407
0.047
R1405
3.3K
SW1954
PLAY
5
C1302
10
R1413
1K
HDON
R1903
820
SW1953
LEAD IN
3
4
CN1901
R1901
470
2
G 2.6V
C1303
IC1300
4.7
74ACT02F
HEAD DRIVER
5V
2SK1473
0V
0V
2.6V
DISC
MEDIA
1
2
R1304
680
Q1302
2SK2909
G
2.6V
S
S Q1301
LEAD IN
HINF
3 GND
4 LOADING
MINF
1
1.5V
D
CW1901
R1902
1.8K
LEAD IN
HINF
GND
LOADING
MINF
S
L1300
47uH
D1301 1.4V
SB0209CP
5V
1.4V S
MD PICKUP UNIT
SW1952
D
F+ F- T+ T-
C1301
0.027
R1301
10
TP1300
C1300
120P
(CH)
2.6V
G
D1300
SB0209CP
5
Q1300
2SK2909 D
1.5V
7
6
CN1300
TP1301
CW1903
8
1
2
G
WRITE
PRO
R1614
100K
Word Driver
DADATA
ADDATA
DFCK
BCLK
LRCK
F+
T-
LVVIN
1/V
1/V
1/V
1/V
LDOUT VCC
DGND
EXTC
LDON
APC
LDVAR
LW
18
C1709
0.01
R1612
200K
1
2
1
2
3
4
TP1212
5 4 3 2 1
MAGNET HEAD
(RECORD)
5
9
R1414
1K
Row Decoder
CAS 17
L1200
4.7uH
12
2
CN1101
2 1
T.COOL
F.COOL
7 6
FT+
APCIN
8
2.5V
C1203
1
3
9
C1805
1
3
A4
A5
A6
A7
A8
Row Address
Buffer
On ChipVBB
Generator
3 WE
Data Input
Buffer
SELF Refresh
Timer
A0 5
VSS 20
LDVAR
LDON
6 5 4
DGND
RF2
VCC
AGND
MP/R
RF4
RF3
E
F
A
COM
RF1
LDVAR
DGND
DGND
LDON
28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
SYD4
SYD6
SYD5
C1118
1
IC1202
IX2474 AF
4M BIT D-RAM
FN
TP
FP
TN
8 7
EXPORT0
X700KO
oscilloscope
R1210
220
10
1.2V
C1107
0.033
R1105
1.2K
FLEXIBLE
PWB
APCOUT
LDVCC
R/P
1.7V
1.3V
10
TP1203
TP1113
TP1115
TP1117
TP1118
TP1119
TP1120
TP1121
TP1122
TP1123
TP1107
TP1108
TP1109
TP1110
TP1111
TP1112
R1102
10K
TP1104
TP1105
TP1106
TP1103
28 27 26 25 24 23 22 21 20 19 18 1 7 16 15 1 4 13 12 11 10 9
0.4V
0.4V
0.9V
0.7V
EXPORT1
2.5V
1.3V
11
L1101
10uH
R1100
27
TP1100
TP1101
TP1102
4
B
LVVOUT
SYD7
TESO1
SLDRR
SPDRF
SPDRR
TP1136
R/P
C1100
4.7
SW
+2.8V
3.16V
3.15V
SLDRF
CBR Refresh
Counter
270P
TP1213
TEST3
L1100
0.47uH
R1101
1
8
SYWRX
TRDRR
SGAIN
PLAY DISC : 0V
REC DISC : 3.2V
6
SYRDX
TRDRF
VDD2
RAA4
DVCC
0V
DATA
DTEMP
FODRR
C1119
1
NC
NC
X176KO
FODRF
RAA3
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
C1106
1
NC
TEST2
RAA10
DATA
24
R1200 120K
R1201 120K
R1202 150K
R1203 150K
R1204 62K
R1205 62K
R1206 33K
R1207 33K
3.2V
CLOCK
23
0V
22
3.2V
21
CLOCK
20
0V
0V
0V
19
TP1130 R1112
22K
25 1.78V
0V 16
1.45V
17
1.56V
18
1.62V
19
1.7V
20
1.5V
21
1.63V
22
1.53V
23
1.8V
24
1.4V
25
100K
test points
XI 641.3V
DGND 63 0V
3.17V
VDD1
62
DIN
0V
DIGITAL IN : 1.58V
VPD 61
OTHER : 0V
3.17V NC
VXI 60
3.2V
CDBCLK 59
3.2V
CDLRCK 58
3.2V
CDDATA 57
TEST4 56 0V
A4
A5
A6
A7
A8
TP1116
LATCH
18
1.45V
AGND
17
LATCH
SGAIN
16
DGND
DISC
15
FOUT
DTEMP
STBY
14
GROUP : 3.2V
PIT : 0V
AVCC
13
3.2V
BIAS
12 FIN
0.8V
0V
26
LOGIC
R1223
100
1.2V
EIN
IC1201
LR376484
ENDEC/ATRAC
VBAT
0V 14 TEST0
0V 15 TEST1
TP1200
FODRF
FODRR
TRDRF
TRDRR
SLDRF
SLDRR
SPDRF
SPDRR
FIN
RAA0
BIN
3.2V
RF2
RF1
FIN
EIN
RF3
RF4
AIN
BIN
TP1128 R1110
22K
BOUT
27 1.35V
TP1129 R1111
22K
EOUT
1.78V
TCG
BIN
7
Write Clock
Generator
Clock Generator
CAS 17
Connect an oscilloscope to the test points (y ~ o) through a
filter as shown below.
1.55V
75
1V
DADATA 74
ADDATA 73 0V
DFCK 721.5V
1.55V
BCLK 71
1.5V
LRCK 70
0V
DGND 69
3.17V
VDD3 68
1.58V
DOUT 67
DIN
66
XO 65 1.3V
19
21
20
17
EIN
1.6V 11
WBI
3.17V 12 VDD1
0V 13 DGND
C1200
1
28
1.6V
3
WBO-I
AGND
AIN
1.4V
NC 3.2V
1.2V
8 TCGI
11
30 1.6V
TP1126 R1108
22K
TCGO
29 1.6V
TP1127 R1109
22K
AOUT
1.36V
R1103 1.6V
390K
AIN
9
10
TP1135
R1107
560
1.25V 10
13 14
EFMI
RAA1
WBO
HPF
1.6V
1.6V 3
0V
4
1.36V
5
1.77V
6
1.6V
7
1.36V
8
1.77V 9
1.8V
LPF
5
C1201
10
1 EFMMON
2 AVCC
RAA2
22KI 31
REFO
BIAS
1.6V
32
C1117
270P(CH)
6
22KO
IC1101
AGC
IR3R55
RF SERVO/SIGNAL CONTROL
C1114
C1115 270P(CH)
C1116 270P(CH)
270P(CH)
ADIP
REFI
1.48V
3.2V
AOUT-IN
EOUT-IN
TCG
BOUT-IN
FOUT-IN
4
ADLPFO 1.6V
33
DIFF
0.7V RFADD
7
1.6V
C1112
330P
(CH)
34 0V
TP1201
1
EFMO-I
TP1133
ADIPO
NC
5
C1103
0.027
1.6V
1.6V
35
TP1134
C1102
1.6V
1
1.6V
TP1132
ADIPI
DIFF
RF3
4
1.6V
36
AGC
SW
R1106
56K
0.8V
EFM
u
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
SYRS
37
2.5V
1.6V
0.3V
38
ADAGI
39
A3
A2
A1
A0 C1202
1
1.6V
1.6V
40
TP1202
C1111
0.47
ADAGC
AVCC
41
EFMO
42
EFMI
43
6
TP1204
TP1131
TP1125
C1110
0.0047
RF2-1
3.2V
1.6V
C1109
1
0V
EFMAGC
44
AGND
1V
1.6V
1.6V
ATTR
GOUT
45
R
RF4
3
C1101
1
1.6V
TO CHASSIS GND
46
C1204
0.047 R1208
220
C1113
270P
(CH)
0.7V
C1120
0.01
47
EFMAGI
0.7V
POUT
0.7V
48
RF2
1
RF1
0.7V
2
2
0.7V
C1105
0.0033
C1104
0.033
0.7V
C1108
0.47
TP1124
RAS 4
Note : y ~ o
TP1215
TP1218
TP1217
TP1216
C1504
220P
(CH)
C1505
100P
(CH)
* All voltage are measured with a 10MΩ/V DC electric volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
84
A
B
C
D
E
F
G
H
I
J
K
GX-900
■ SCHEMATIC DIAGRAM (MD)
1
P87
C-9
BUFFER
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
0
06
0
0
10.1
8
0
05
0
2
0
0
0
0
0
0
0
-9.8
0
4.7
0
4.8
0
5.1
03
0
1
0
02
4
-9.8
3
LPF
05
MUTING
0
0
0
0
0
0
4.7
0
2.3
0
0
0
2.1
0
4.7
4.7
0
~
0
10.1
8
4.7
4.7
7
0
06
0
i
0
0
-9.8
0
0
0
0
MD CPU
0
0
5.1
0
0
5.5
0
4
0
0
0
0
5.5
0
4.5
0.1
4.6
2.2
4.2
~
0
0
4.6
0
0
0
0
6.0
4.7
0
0
0
0
0
4
-9.8
0
0
-9.8
0
03
0
0
0
1
0
0
0
4.6
0 2
0
P87
B-9
12.4
6.6
5
6.6
0
0
5.0
0
P84
K-7
6
5.0
5.5
REGULATOR
5.0
~
2.0
0
~
~
~
~
10.9
5.0
P89
A-3
10.3
1.2
BACKUP
1.2
0
3.1
0
0
5.5
3.4
3.8
7
3.8
0
P87
E-8
IC3, 5 : µPC4570G2
Dual OP-Amp
8
85
1A 1
14 VDD
OUT1 1
8 +VCC
1Y 2
13 6A
–IN1 2
7 OUT2
2A 3
12 6Y
+IN1 3
6 –IN2
2Y 4
11 5A
–VCC 4
5 +IN2
3A 5
10 5Y
3Y 6
9 4A
VSS 7
8 4Y
+ –
+ –
Point i (Pin13 of IC2)
V : 2V/div
H : 50 nsec/div
DC range
1 : 1 probe
IC4 : TC74HCT04AF-T1
Hex Inverters
0V
L
A
B
C
D
E
F
G
H
I
J
K
L
M
N
GX-900
■ SCHEMATIC DIAGRAM (CD)
1
CD HEAD AMP
4.8
5.5
REGULATOR
4.9
IC1 : LA6541D
4 Channel BTL Driver
REGULATOR
8.5
1.8
1.2
0
2
LEVEL SHIFT
1
LEVEL SHIFT
4
BTL AMP
1
BTL AMP
4
26 VO8
25 VO7
VO2 6
0
0
28 VIN4
27 VG4
VO1 5
6.8
0
11KΩ
VG1 4
0
0
2.7
29 VREF
11KΩ
VIN1 3
6.8
7.9
1.2
30 VCC
MUTE 2
6.8
1.2
0
11.1
6.3
7.9
–
+
VCC 1
MAIN(1)
P89
A-2
VCC
24 GND
GND 7
0
–
+
GND 8
0
23 GND
GND 9
INPUT(1)
P87
A-9
22 GND
VO3 10
21 VO6
BTL AMP
2
BTL AMP
3
LEVEL SHIFT
2
LEVEL SHIFT
3
REGULATOR
RESET
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.5
2.4
2.5
1.2
1.5
0
0
2.4
2.4
VO4 11
20 VO5
VG2 12
VIN2 13
19 VG3
11KΩ
18 VIN3
11KΩ
17 CD
REG OUT 14
0.1
3.8
4.9
0
4.9
2.4
2.9
2.5
3.6
1.6
3.8
3.2
3.5
0.6
3.5
0
0
0
REG IN 15
4.8
0.2
+
2.4
2.4
C.EA
ENV
17
11
12
19
+
RF
DETECT
AGC
VCBA
PDBD
35
OFTR
+
+
4.3
4.9
0
~
4.7
0
0
0
0
4.7
~
~
2.4
0
PDFR
31
PDF
34
13
C.SBDO
14
BDO
15
C.SBRT
16
OFTR
20
VREF
VCBA
5
VCC
18
GND
21
LD OFF
2
LD
+
+
+
VCBA
PDER
+
32
+
PDE
33
+
+
+
+
23
22
1
4
3
LDON
26
LDP
25
PD
24
VDET
30
TEBPF
+
4.9
0
2.4
2.3
4.9
+
+
TE–
0
ENV DETECT
TEOUT
4.9
+
+
TBAL
2.5
2.2
8
9
00
7 4.7
0
~
2.4
2.4
0
4.9
4.7
2.4
0
2.4
4.9
0
~
2.4
2.4
2.7
2.4
2.4
10
BDO
1
2
3 ~
~
7 0
SPC & DAC
36
CROSS
4.9
0.6
0
1.2
0.2
0
2.4
2.5
2.5
2.6
2.3
2.4
2.3
2.4
2.4
2.4
2.4
2.4
2.4
0.6
2.8
6.3
2.5
2.4
2.4
2.7
2.7
0
0
0
PDAC
4.7
4
5
6 ~
0
2.5
1.2
6.3
6.2
2.4
2.4
2.4
3.0
0
0
0
9
EQ
0
5
8
VCBA
4
ACT
MOTOR
DRIVE
28
C.ENV
27
RF DET
29
ARF
7
C.AGC
6
FE–
RF IN
FEOUT
10
9 4.8
0.2
0
1.9
~
8
4.8
11 0
4.710
4.7
3.8
4.4
14
IC2 : AN8803SB
Digital Servo Head Amp
INPUT(2)
P87
E-8
F.BAL
14
12 4.8
0 13
RF OUT
4.8
11
RF–
3
16 RES
IC3, 4 : TA8409S
Full Bridge Motor Driver
3.1
q
2.4
0.8
VCC
VS
2
6
VREF
CIRCUIT
STAND-BY
CIRCUIT
8 VREF
2.5
IN 1 9
6
7 OUT 1
3 OUT 2
IN 2 1
6.2
THERMAL
SHUTDOWN
CIRCUIT
0
5
GND
0
0
0
4.7
0
0
0
0
~
~
4.8
0
4.6
4.3
0
0
0
~
0
0
7
0
4.8
0
4.9
0
4.8
0
0
0
0
0
0
0
0
4.8
0
0
0
0
0
0
0
0
0
0
w
4.3
4.7
CD CPU
2.1
2.3
0
0
0
0
0
0
0
0
4.8
0
0
Point q (Pin59 of IC5)
V : 5V/div
H : 50 nsec/div
DC range
1 : 1 probe
0
4.7
0
4.7
0
4.8
4.8
0
4.7
0
0
0
0
0
0
03
01
11 4Y
2A 5
10 3C
2Y 6
9 3A
GND 7
8 3Y
60
0
11.1
0.9
6.2
0
0
4.8
1.1
12 4A
2C 4
OUT1 1
–IN1 2
CD(Lch)
MOTOR DRIVE
03
MUTING
12.4
8 1 0
Point w (Pin39 of IC11)
V : 2V/div
H : 50 nsec/div
DC range
1 : 1 probe
02
4.8
0
LPF
0
11.1
1.2
2.7
0
0
4.8
1.1
13 4C
1Y 3
IC10 : µPC4570G2
Dual OP-Amp
0V
5
2
-11.9
0
0
4.7
6.2
0
06
05
70
4
-12.0
8 +VCC
+ –
+ –
7 OUT2
+IN1 3
6 –IN2
–VCC 4
5 +IN2
IC13 : TC74HC04AF
Hex Inverters
4.8
0
-11.9
0V
0
10
14 Vcc
4 4.8
4.8
9
1C 1
1A 2
0
0
0
0
0
0
0
0
0
0
8
IC7 : TC74HC125AF
Quad 3 State Bus Buffers
-11.9
1A 1
14 VDD
1Y 2
13 6A
2A 3
12 6Y
2Y 4
11 5A
3A 5
10 5Y
3Y 6
9 4A
VSS 7
8 4Y
0
86
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
GX-900
The voltages are measured by Type II/High tape at PLAY mode (no-signal condition)
Only the voitages ( ) are at REC (CD) mode.
PB INB2
PB FB12
PB FB22
PB OUTA2
PB OUTB2
43
42
41
40
39
38
37
GND
PB INA2
44
GND
PB INA1
45
GND
PB INB1
46
GND
PB FB11
47
GND
48
GND
PB FB21
DOLBY NR OFF
●
PB OUTA1
1
IC6 : CXA1897Q
Dolby B-Type Noise Reduction System with Recording/Playback
Equalizer
PB OUTB1
■ SCHEMATIC DIAGRAM (INPUT)
0
VCC
33 AGC TC
10K
10K
32 AGC IN2
AGC
AGC OUT1
6
31 AGC OUT2
D REC IN1
7
30 D REC IN2
D IREF
8
D PB IN1
9
IREF
29 REC MUTE
MUTE
-11.9
0
8.9
27 MODE
26 D L OUT2
REC EQ
CTL
NR
18
19
20
21
22
23
25 D TC2
24
DR OUT2
17
GP CAL
16
REC IN2
15
FP CAL
14
SPEED
13
12.4
9.6
0
0
12
DECK AB
-9.1
D TC1
REC EQ
CTL
REC IN1
0
11
0
ELECTRONIC
VOLUME
CONTROL
0
10
0
0
0
NRSW
D L OUT2
REC
EQ
REC OUT2
-9.1
A EQ
0
0
28 D PBIN2
REC
EQ
0
REC OUT1
0
B EQ
8.9
0
4.7
8.9
4.3
4.4
0
5.6
RSBC2 33
RHP1 34
0
RHP2 35
RRECOUT10 36
4.3
4.4
17 LSBC1
18 LCOM2
19 L1dBOUT
20 L10dBIN
21 L10dBOUT
22 LVSS
23 DVSS
25 DI
24 CL
16 LSBC2
15 LHP1
14 LHP2
13 LRECOUT10
RRECIN10 37
4.4
4.4
0
1.9
-6.0
MUTING
4.3
4.2
4.4
4.1
4.2
4.4
4.1
4.1
4.4
8.9
0
CCB BUS INTERFACE
DECODER + LATCHES
5.5
4.7
4.2
4.4
4.4
8.9
4.9
5.5
4.4
8.9
0
26 CE
12.4
0
0
2.3
4.7
0
0
4.4
0
27 RVSS
4.4
4.4
8.9
3.7
4.4
4.4
4
3.7
4.4
28 R10dBOUT
8.9
8.9
0
REGULATOR
4.4
29 R10dBIN
4.4
8.9
4.7
32 RSBC1
0
0
4.1
0
0
4.1
8.9
4.4
4.4
0
8.9
0
4.7
IC7 : LC75393E
Electronic Volume Control
0
4.4
0
9.6
0
4.4
4.1
0
0
0
0
4.3
4.4
4.1
0
7
-9.1
8.9
14
0
-9.1
0
4.3
0
0
4.4
3
5
35 IREF
34 VG
AMS
-12.0
4.7
0
AGC IN1
36 GND
IREF
DR OUT1
8.9
0
0
0
0 -11.9
8.9
0
4
NR
0
-9.1
0
3
10dB
AMP
5.5
0
0
0
0
0
0
AMS OUT
AMS GAIN
40K
0
GND
30 R1dBOUT
2
0
8.9
2
31 RCOM2
0
0
0
0
MUTING
12.3
1
RFC
40K
INPUT SELECTOR
VCC
10dB
AMP
BUFFER
GND
P88
F-1
12.3
11 LRECOUT1
RCOM1 39
0
4.7
12 LRECIN10
RRECOUT1 38
0
4.7
10 LCOM1
RH 40
9
LH
RF2C1 41
8
LF2C1
RF2C2 42
7
LF2C2
6
LF2C3
5
LF1C1
RF1C2 45
4
LF1C2
RF1C3 46
3
LF1C3
RTIN 47
2
LTIN
1
LSVROUT
8.9
0.3
(0.3)
(0)
4.3
(4.3)
5.5
2.4 (2.4)
(2.4)
2.4
0
(0)
4.2
(4.2)
6.2
4.3
(4.3)
OUT 1
VCC 2
OUT 2
P2
VCC 1
2
8
10
9
7
PRE DRIVER
P1
3
4.8
(4.8)
0
10
4
16
5.5
(5.5)
0
VZ
INVERTER
10
X1
14
X2
15
X3
11
Y0
1
9
LEVEL
CONVERTER
SIG/A
87
3
4
5
6
7
VCC
SWP 2
8
9
Y1
5
GND
2
SWR 2
1
GND
IN 2
CONT
1
6
SWP 1
GND
INPUT LOGIC
GND
5
SWR 1
COMPARATOR
SW
Y2
2
Y3
4
OUT/IN
SIG/B
IN/OUT 4
3
X
SW
CONT B 5
SW
SW
3
SW
SW
Y
INHIBIT
0
0
0
0
1
B
0
0
1
1
X
VCOFF
VCON
DIRECT PASS
LSVRIN 64
LVCOUT 63
MICIN 62
LVref1 61
LVref2 60
LIN 59
VC1 58
VC2 57
VC3 56
VC4 55
SEL
12
C
11
B
10
A
14
VDD
SW
A
13
CONT A
SW
D
12
CONT D
11
IN/OUT
10
OUT/IN
16
15
14
A
0
1
0
1
X
0x, 0y
1x, 1y
2x, 2y
3x, 3y
NONE
SW
B
2C3
2G
2.4
0
~
0
1.7
1.7
~
~
0.4
IC9, 11, 21 : µPC4570G2
Dual OP-Amp
0.9
OUT1 1
INPUT (1)
P88
H-5
VSS 7
1G
1C3
SIG/C
8
IN/OUT
1
2
STROBE B
1G SELECT
IC10 : BA15218N
Dual OP-Amp
3
PEAK
HOLD
3.4kHz
BPF
DIF
8
PEAK
HOLD
10.5kHz
BPF
A
9
1. Lch +
2. Lch —
—
3. Rch —
4. Rch +
5. E —
6. E +
11
10
9
2C2
2C1
2C0
2Y
1C2
1C1
1C0
4
5
6
DATA INPUTS
SAME
PAGE
A-7
+ –
+ –
–VCC 4
5 +IN2
SAME
PAGE
A-5
+
–
7 OUT2
6 –IN2
LOADING PCB
+
8 +VCC
+IN1 3
–
1
2. LOAD IN (+)
2
3. LOAD OUT
3
4. COM
4
Point e (Pin37 of IC8)
V : 2V/div
H : 20 µsec/div
DC range
1 : 1 probe
Point r (Pin39 of IC8)
V : 2V/div
H : 50 nsec/div
DC range
1 : 1 probe
MTR
5
PH TYPE (JST)
1
2
3
4
5
6
7
8
V : 2V/div (CH1)
V : 2V/div (CH2)
DC range
1. LOAD OUT (+)
5. LOAD IN
MAIN PCB
Point t
H : 0.5 sec/div
OUTPUT
2Y
12
1 : 1 probe
SAME
PAGE
A-6
1. R ¥ REC
1
2. METAL
2
3. F ¥ REC
3
4. CASS IN
4
5. CrO2
5
6. +SOL
6
7. SENSOR OUT
7
8. +5V SENSOR
SOL
8
9. PLAY SW
9
10. +MTR
10
11. —COM
11
—
+ MABUCHI
B
A
MTR
13. MTR SPEED A 13
CH 1
PH TYPE (JST)
MECHA CHASSIS
CH 2
BBAA
OUT/IN
C
12. MTR SPEED B 12
SIG/D
SW
C
7
+
BBAA
9
CONT C 6
13
MPX
E HD
(This waveform is not available by pushing the power switch ON and OFF.)
DATA INPUTS
STROBE A
2G SELECT
PEAK
HOLD
1kHz
BPF
+
—
5.5
OUT/IN 2
7
SW
13
A–C
6
R
0
BINARY TO 1-OF-4
DECODER WITH INHIBIT
SW
N. C.
+
1.0
8
12
14
PEAK
HOLD
340Hz
BPF
5
PH CONNECTOR
IC401 : TC74VHC153F
Dual 4 to 1 Data Selectors
VCC
13
IN 1
IC5 : µPD4066BG
Quad Analog Switch/Multiplexer
IN/OUT 1
A
B
VSS
VEE
X0
N. C.
(0)
t
IC3, 4 : TC4052BF
Dual 4 Channel Analog Multiplexers/Demultiplexers
VDD
15
PEAK
HOLD
105Hz
BPF
L
+VCC
(0)
0
P88
E-6
6
4
R / P HD
P85
B-1
INHIBIT
N. C.
5.2
(5.2)
CH1 : Collector of Q19
CH2 : Anode of D11
IC2 : µPC1330HA
2 ch Head Selector Switch
TEST
4.9(4.9)
OUT2
4.6
(4.6)
MAIN CPU
4.8
P85
H-5
IC1 : LB1641
Motor Driver
16
DEC
–IN1 2
INPUT (2)
SAME
PAGE
K-6
REFFERENCE
CURRENT
VCC
–IN2
(4.9)
4.8
P86 L-3
3.1
3
RES
0
(0)
4.7
0
BREF
A IN
+IN2
RESET
(4.6) 4.6
(0) 0
(0) 0
4.8
(4.9)
0
0
2.4
3.9
0
0
0
A OUT
RES
4.9
4.9
3.6
3.1
4.7
9
4.7 (0)
0
(0)
P85 B-8
0
0
0
0
17
C IN
0
MD
CD
P86
L-2
(16.4)
0
e
0 (0)
0 (0)
4.1 (4.1)
~ (~)
2.1
(2.1)
3.6
VREF
RES
–VCC
(16.4)
0
(5.5)
0
4.9
(4.9)
SAME PAGE A-5
2
DIF OUT
–IN1
(0) 0
0
(0)
TUNER
4.7 (4.7)
4.1 (4.1)
0 (0)
~ (~)
4.6 (4.6)
0 (0)
0 (0)
~
~
1.7
1.7
0
2.3 (2.3)
1.9 (1.9)
2.3 (2.3)
2.2 (2.1)
4.6 (4.6)
r
(~) ~
(4.8) 4.8
(4.8) 4.8
(4.8) 4.8
(4.8) 4.8
(4.8) 4.8
(4.8) 4.8
3.4
(3.5)
0 (0)
0 (0)
0 (0)
7.8 (7.9)
0 (0)
0 (4.6)
0 (0)
0 (0)
0 (0)
BIAS ADJ.
(Lch)
4.9 (4.9)
4.9 (4.9)
4.9 (4.9)
4.8 (4.9)
0 (0)
0 (0)
4.8 (4.9)
4.8 (4.9)
CASS
23.1
(20.7)
0
0
(0) 0
(0.2 )
REC/PB
SW
P90
I-5
(4.5)
0
(0) 0
(15.7)
VREFC
RES
+IN1
0
(0)
GND
(1.9)1.9
(4.7) 4.7
0
(15.8)
3.4 (3.5)
(5.5) 5.5
(4.7) 4.7
SAME
PAGE
N-8
8
(0)
0
BIAS OSC
BIAS ADJ.
(Lch)
18
N. C.
SPECTRUM
ANALYZER
1.4
2.4
0 (0)
0 (0)
(4.5)
0
0
(16.4)
7
(0)
0
0
0 (0)
2.1 (2.1)
4.7 (4.7)
~(~)
4.9 (4.9)
4.5 (4.4)
4.6 (4.6)
0 (0)
~ (~)
4.7 (4.7)
4.7 (4.7)
4.5 (4.5)
4.7 (4.7)
4.5 (4.5)
4.7 (4.7)
0
(0)
0
MECHANISM
CONTROL
BIAS
RES
0.7
0
(0)
(0) 0
(0) 0
(0) 0
(0) 0
0
(0)
0
1
0 (0)
1.6 (1.6)
4.6 (4.6)
0.9 (0.9)
(4.6)
4.6
2.5 (2.5)
BIASC
0
REC LEVEL ADJ.
(Rch)
(0.1) 0.1
0
SAME
PAGE
B-9
9.6
6.2
4.5(4.5)
0 (0)
(
)
0 0
0 (0)
4.7 (0)
0 (0)
0 (0)
0 (0)
(4.7) 4.7
(0) 0
(0) 0
4.7 (4.7)
4.7 (4.7)
4.7 (4.7)
4.7 (4.7)
4.7 (0)
0 (0)
4.7(4.7)
(4.7) 4.7
4.7(4.7)
(4.7) 4.7
(4.6) 4.6
(0) 4.7
(0) 4.7
0
PB LEVEL ADJ.
(Rch)
IC26 : BA3835S
5-Band BPF and Peak Hold for Spectrum Analyzer
REGULATOR
0
0.7
RIN 54
P89
A-3
REGULATOR
(7.4) 7.4
VCON
0
(0)
0
2.6(2.6)
4.2(4.2)
4.1(4.1)
4.2(4.2)
1.1 (1.1)
4.2 (4.2)
2.5(2.5)
4.3(4.3)
0.3(0.3)
8.5(8.5)
(2.6)
2.6
RVref2 53
9.7
0 (0)
(4.2)4.0
(1.6) 0
(1.2)1.2
(0) 0
(4.2)4.2
(4.3)4.2
(8.5)
8.5
12.5
12.4
12.5
8.9
(1.3)
1.3
(0) 0
0
REC LEVEL ADJ.(Lch)
(0)
0
OUT1
~
11.7
9.7
0
(0)
(0)
12.4
9.0
RVref1 52
4.2(4.2)
0
(0)
0 1.2(1.2)
(2.6)
2.6
1.3 (1.3)
0 (0)
~
0
0
(4.3)
4.3
(2.6) 2.6
SAME
PAGE
M-9
12.4
12.4
0
RSVROUT 48
-12.0
-12.0
(0.8)
(4.2) 4.2
(4.1) 4.1
(4.2) 4.2
(4.7) 0
(4.2) 4.2
CASS
0
P89
H-7
0
RSVRIN 49
0.5
0.7
HEAD EQ AMP
DOLBY B-TYPE
PROCESSOR
0
TONE
AMP
(0) 0
(4.7)
TAPE SPEED ADJ.
0
TAPE
PB
PB LEVEL ADJ.
(Lch)
CASS IN
0
-6.0
VCOFF
0
0
0
0
0
0
0.5
0.7
1.5
0
0
12.5
SAME
PAGE
M-8
0
RF1C1 44
VDD 51
12.3
RF2C3 43
RVCOUT 50
MOTOR
DRIVE
12.5
6
PRE
AMP
0
SAME
PAGE
D-8
5
P89
A-4
-6.0
DIRECT PASS
0
0
0
0
1Y
7
8
OUTPUT GND
1Y
INPUTS
SELECT STROBE
B A
G
X X
H
L L
L
L H
L
H L
L
H H
L
OUTPUT
Y
L
C0
C1
C2
C3
0V
0V
With the POWER ON,
disconnect the A/C power
cord. Reconnect the A/C
power cord and the above
waveforms will start.
Disconnect the
power cord from
the AC outlet.
A
B
C
D
E
F
G
H
I
J
K
GX-900
■ SCHEMATIC DIAGRAM (OPERATION)
P87
H-2
1
0
4.9
-21.0
-21.0
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
4.6
~
~
~
-25.0
~
~
~
-25.0
~
~
~
~
-25.0
4.6
~
~
-24.9
4.2
~
~
-24.8
~
~
~
-24.8
-24.8
~
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-24.8
-25.0
-24.9
-25.0
-25.0
-21.0
-21.0
4.9
MUTING
0
0
0
IC810 : µPC4570HA
Dual OP-Amp
2
-6.0
-6.0
0
-24.8
0
7
9 12.1
8
0
AVDD
AIL
CL
FCL
FOL
WL
TAL
TBL
AOL
0 6
11
8
3
2
1
24
23
22
4
0
3
0
14
FILTER
-26.8
IC814 : YSS247-D
YMERSION
2.2
-24.8
-24.8
3
5
-11.8
2
0
SWITCH
+1
VREF
17
-26.8
BUFFER
VREF
–1
SWITCH
-21.4
+1
SWITCH
YMERSION
5.5
5.3
5.3
TONE CONTROL
2.5
TO SWITCHES
5.5
4.9
5.0
0
0.9
0
0
5.0
1.6
0
2.5
2.5
LOGIC
2.5
+1
SWITCH
2.5
2.5
–1
SWITCH
13
2.5
0
SW
0
4
0
0
0.6
3.3
2.5
2.5
2.5
2.5
2.5
2.5
SWITCH
15
2.5
FILTER
AVSS
2.5
+1
2.5
2.5
COMPARATORS
FL
DRIVER
4.5
9
VCC
~
~
6
7
8
+Vm2 –Vm2 VO2
2.2
0
5
VEE
0
4.5
2
3
4
VO1 –Vm1 +Vm1
–
-24.8
1
VCC
+
12.4
5.0
2
+
-24.8
1
–
5
CR
FCR
FOR
WR
20
19
18
AOR
6
TAR
7
TBR
10
AIR
0
12
4.5
4.5
YMERSION
5.3
5.5
0
5
P87
H-9
6
P87
G-9
7
SERIAL
RECEIVE
CIRCUIT
DISPLAY CODE
REGISTER
(8BITx16)
CODE
WRITE
CORD/
COMMAND
CONTROL
CIRCUIT
8
RAM
WRITE
DECODER
CS 14
SCK 15
SDATA 16
DECODER
IC815 : M66004MASP
FL Driver
CGROM
(35BITx160)
59
SEGMENT
OUTPUT
CIRCUIT
CGRAM
(35BITx16)
OUTPUT
PORT
(2BIT)
DISPLAY
CONTROL
REGISTER
RESET 13
XIN
21
XOUT 20
CLOCK
GENERATOR
SEG00
33
SEG26
31
SEG27
23
SEG35
18
P0
17
P1
12
DIG00
CODE
SELECT
DISPLAY
CONTROLLER
DIGITAL
OUTPUT
CIRCUIT
1
DIG11
64
DIG12
61
DIG15
88
A
B
C
D
E
F
G
H
I
J
K
L
GX-900
■ SCHEMATIC DIAGRAM (MAIN)
1
0
0
REGULATOR
-12.7
-27.3
-12.7
-26.8
-51.2
-12.1
-23.8
2
REGULATOR
P86 L-2
12.5
51.0
23.3
12.4
23.3
12.9
P85 H-6
13.0
-51.2
12.9
13.0
3
0
0
P87 K-6
IC201 : STK496-420Y
2 Channel AF Power Amp
1
R31
POWER
SUPPLY
PROTECTION
POWER AMP
TR31
17
D6
TR1
3
R4
R14
TR14
TR2
TR6
TR21
TR9
TR23
C3 R12
4
TR4
TR3
12.4
50.9
TR8 TR12
23.3
-0.4
23.3
10.3
1.6
0
49.9
0
TR10
TR5
0
12.4
7
TR22
D34
TR7
TR19
R8
R18
0.6
COMPARATOR
R13
0
R32
12
13
16 10
14
15
11
21 22
9
0
0
0
50.8
-48.5
51.0
8
0
0
-0.1
6
R17
R7
R51
0
D36
TR32
TR17
D1
R3
0
MUTING
2
SUB
D32
4.8
10.3
-0.1
TR15
R16
0
11.7
4
TR16
TR24
R6
20
-23.8
D31
TR20
R15
19
4.8
51.0
23.3
R19
R9
R5
5
D35
C4
R2 C1
18
P87 K-4
COMPARATOR
D33
TR11
C2
TR13
D7
12.3
0
0
0
5
-6.0
0
-0.9
-22.9
0
-23.1
0
-23.8
-6.0
0
-0.1
-23.2
-23.2
-23.2
-49.9
0
50.8
0
0
-0.1
SUB
POWER SUPPLY
-51.2
-10.3
0
-23.8
6
-10.8
-23.8
9.2
9.2
0
0.7
0
0
P87 K-5
7
8
89
A
B
C
D
E
F
G
H
I
J
K
GX-900
■ SCHEMATIC DIAGRAM (TUNER)
Each voltage represents the voltage when receiving FM (stereo) signal and the voltage in the parentheses (
) is the voltage when receiving AM signal.
PK1 : TFFJ2U515A (V4299000) U, C, R, T, L models
2.0V
98.1MHz
4.1V
108.0MHz
7.1V
531kHz
1.4V
1080kHz
4.9V
FM
AM
1611kHz
J4
0
FM/AM TUNER
12.2
12.4
(0)
(12.4)
R1
OPEN
C22
OPEN
C21
100p
GND 6
C5
OPEN
C18
0.01µ
T1
TR2
L3
C3
OPEN
L4
C4
1200p
L5
R4
330k
C7
560p
L1
ANT 8
6.9V
L2
2.2µ
C1
24p
L7
D1
C6
4p
C26
0.01µ
2 GND
J3
0
J1
0
C24
0.01µ
R5
100k
R6
4.7k
C9
2p
TR3
R8
180
C12
12p
C10
OPEN
D2
C15
6p
R9
1.8k
C14
22p
C11
0.01µ
C16
18p
TR4
C13
33p
0
(12.4)
R10
180
5 VCC
C23
OPEN
R7
100k
C27
OPEN
L6
3 F OUT
R11
33
2
1 IF OUT
TR1
ANT 7
C19
56p
C8
47p
R3
10k
C2
3p
R2
33
C20
12p
VT
87.5MHz
J2
0
4 VT
1
C17
0.01µ
(10.3)
10.1
0 (0)
PK1 : TFFJ4E515A (VU134500) A, B, G models
0.9
(6.0)
0.5
(4.8)
(0)
12.3
(0.6)
9.1
9.1
(5.9)
9.0
0 (2.6)
3.7 (0)
1.4 (1.4)
4.3 (0)
10.1 (10.3)
0 (0)
0.1 (10.1)
0 (0)
3.5 (3.5)
3.5 (3.5)
10.1
(3.5)
3.5
(10.3)
(0)
0.1
(10.1) 0.1
2.3 (2.6)
(0)
J2
0
AM
STEREO
DEMODULATER
9.1(0)
4 VT
R12
100k
C20
4p
R2
33
C25
6p
D3
D1
L3
C3
2p
C6
4p
C5
2p
L2
2.2µ
L1
R4
1M
L7
GND 7
C21
OPEN
C1
1p
C22
680p
R1
100k
C26
0.01µ
2 GND
C7
100p
C23
0.01µ
C24
0.01µ
D2
C12
12p
C9
2p
TR3
(4.2) 4.2
(4.2) 4.2
(4.2) 4.2
(4.2) 4.2
(3.2) 3.3
(3.2) 3.3
(3.1)3.1
(2.8) 2.8
R7
100k
R6
4.7k
C10
OPEN
0.1
(1.2) 0
(1.3)
(3.5) 3.6
(3.5) 3.6
(3.5) 3.5
(3.5) 3.5
(1.9) 2.0
R8
180
C27
OPEN
R5
100k
GND 6
FM
1 IF OUT
L5
2.2µ
L4
C4
680p
C18
0.01µ
T1
TR2
TR1
ANT 8
C19
OPEN
C8
47p
R3
10k
C2
4p
TR4
R13
330k
R14
180
5 VCC
TR5
C28
18p
R9
1k
C14
22p
C11
0.01µ
3
R10
150
C15
33p
C13
33p
L6
C16
10p
J1
0
4.3K
3 F OUT
R11
22
C17
0.01µ
4.3K
AM
PK1 : TFFJ2J541A (VV207900) J model
J2
0
4 VT
12.3
(0.1)
9.1
(0.6)
R2
33
C20
27p
J4
0
(4.8)
0 (0)
4.8
4.9 (0.1)
4.7 (4.7)
0 (0)
0.1 (0)
5.6
(5.6)
C19
68p
2.3 (2.3)
12.4
(12.4)
0 (0)
4.9
(4.9)
C1
22p
L7
ANT 8
RDS
DECODER
GND 6
C21
100p
D1
C5
OPEN
L2
2.2µ
L3
C3
10p
C4
680p
L1
C22
OPEN
C6
10p
C18
0.01µ
T1
TR2
R1
OPEN
C26
0.01µ
L4
R4
330k
L5
C7
560p
2 GND
J3
0
J1
0
C24
0.01µ
R5
100k
C9
2p
TR3
C23
OPEN
R7
100k
C27
OPEN
R6
4.7k
C10
OPEN
C12
15p
D2
5.6
(5.6)
(2.4)
2.4
(0) 0
(0) 0
2.4
2.4
(0) 0
C11
0.01µ
C14
22p
5 VCC
R8
180
C16
18p
C15
6p
R9
2.2k
3 F OUT
(2.4)
(4.8) 4.8
(2.4) 2.4
(2.4) 2.4
u
R10
180
TR4
C13
33p
L6
0
(0)
1 IF OUT
TR1
ANT 7
4
C2
5p
C8
47p
R3
10k
R11
68
C17
0.01µ
PLL
5
(0) 0
0 (0)
(0) 0
V429900
V429900
12.3 (0)
(2.4)
0
0 (12.4)
(0)
2.4
12.3 (0.1)
(4.9)
4.9
(1.0)
1.0
4.9 (0.5)
(1.0)
1.0
4.7 (4.7)
(4.9)
4.1
0.1 (0.1)
(0)
0
0 (0)
(2.4)
2.4
2.3 (2.3)
P87 A-8
y
6
TUNER(Lch)
Point y (Pin20 of IC2)
V : 2V/div
H : 0.1 µsec/div
DC range
1 : 1 probe
Point u (Pin12 of IC4)
V : 2V/div
H : 0.1 µsec/div
DC range
1 : 1 probe
7
IC2 : LC72131M
PLL Controller
27
26
25
24
23
22
21
REG
FMIN
P–DET
5
6
+
REFERENCE
VOLTAGE
CE
e
DI
CL
DO
r
t
y
UNLOCK
DETECTOR
12BITS
PROGRAMMABLE
DIVIDER
PLL
(57kHz)
MPX IN 2
CLOCK
RECOVERY
(1187.5Hz)
VREF
ANTIALIASING
FILTER
57kHz
bpf
(SCF)
14 VDDD
15 VSSD
DATA
DECODER
SMOOTHING
FILTER
PILOT
DET
STEREO
DRIVE
5
VCC
6
7
8
9
10
11
12
13
14
15
VDD
!7
VSS
@1
C2B
I/F
DATA SHIFT REGISTER
LATCH
POWER
ON
RESET
u i o !0 !1 !3
UNIVERSAL
COUNTER
!2 IFIN
T1
T2
T3
T4
20
21
22
23
7
8
9
10
CCB
TEST
RAM
(24 BLOCK DATA)
MEMORY
CONTROL
ERROR CORRECTION
(SOFT DECISION)
SYNC/EC
CONTROLLER
0V
PILOT
DET
LPF2
PILOT
in
PILOT
out
MODE
SW.
ST
TUN
IND.
ST
IND.
VCC
16
15
14
13
12
11
10
9
PILOT
DET
OSC/DIVIDER
11 16 17
13
12
ST
LED
PHASE
COMP
19 RDS-ID
ENVELOPE
DET
LIMIT
AMP
18 SYNC
24 SYR
1/18K
ERROR
AMP
I DEM
1/8
Q DEM
VCA
UNLOCK
CLK(4.332MHz)
X OUT
FF
19K 0
DO
CL
DI
CE
X IN
4
AOUT1
1
VDDA 3
T5
T6
T7
3
!5
IO2
FF π
19K 2
AM/FM
IF–BUFF
GND
FM IN
FF
38K
FM
DET
2
AMIN
IO1
VCO
304KHZ
TUNING
DRIVE
1
AIN1
0V
IC3 : TA2040AF
AM Stereo Demodulater
DET
AM
S–METER
FM IF
!9
@0
SWALLOW COUNTER
1/16,1/17 4BITS
BO4
AM IF
STEREO
SW
ø
MUTE
S–CURVE
1/2
VSSA 4
8
FM
S–METER
!6
C IN
16
!8 PD
FL OUT
17
PHASE DETECTOR
CHARGE PUMP
DECODER
ANTI–BIRDIE
AM
RF.AMP
AGC
SD
COMP
18
BO3
BUFF
AM
MIX
19
REFERENCE
DIVIDER
BO2
AM
OSC
20
q
@2
BO1
ALC
28
R–OUT
29
L–OUT
30
XIN
XOUT
VREF
IC1 : LA1838
AM/FM Tunner
IC4 : LC72720NM
RDS Decoder & Controller
SYNC
DETECT-1
SYNC
DETECT-2
PHASE
COMP
IF
AMP
AGC
1
2
3
4
5
6
7
8
LOCK
IF
in
AGC
ROUT
LOUT
LPF1
VCO
GND
MATRIX
VCO
90
GX-900
PARTS LIST
■ ELECTRICAL PARTS
■ WARNING
Components having special characteristics are marked Z and must be
replaced with parts having specifications equal to those originally installed.
● Carbon resistors (1/6W or 1/4W) are not included in the ELECTRICAL PARTS
List. For the part Nos. of the carbon resistors refer to the last page.
● Chip resistors are listed on page 103.
ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS :
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
CHIP ALUMI. ELECTROLYTIC CAP
CERAMIC CAP
CERAMIC CAP ARRAY
CHIP CERAMIC CAP
MULTILAYER CERAMIC CAP
CHIP MULTILAYER CERAMIC CAP
RECOGNIZED CERAMIC CAP
CERAMIC TUBULAR CAP
SEMI CONDUCTIVE CERAMIC CAP
ELECTROLYTIC CAP
MICA CAP
MULTILAYER FILM CAP
METALLIZED PAPER CAP
MYLAR FILM CAP
MULTILAYER MYLAR FILM CAP
PAPER CAPACITOR
POLYSTYRENE FILM CAP
POLYESTER FILM CAP
POLYETHYLENE FILM CAP
POLYPROPYLENE FILM CAP
TANTALUM CAP
CHIP TANTALUM CAP
TRIMMER CAP
CONNECTOR
CONNECTOR, BASE PIN
CONNECTOR, CANNON
CONNECTOR, DIN
CONNECTOR, FLAT CABLE
CONNECTOR, BASE POST
COIL, AM MIX
COIL, FM ANTENNA
COIL, FM DETECT
COIL, FM MIX
OUTPUT COIL
DIODE ARRAY
DIODE BRIDGE
CHIP DIODE
VARACTOR DIODE
CHIP ZENER DIODE
ZENER DIODE
CERAMIC DISCRIMINATOR
FERRITE BEADS
FERRITE CORE
CHIP FET
FLUORESCENT DISPLAY
CERAMIC FILTER
COMB FILTER MODULE
LC FILTER ,EMI
GROUND PLATE
GROUND TERMINAL
FUSE HOLDER
IC PROTECTOR
JUMPER CONNECTOR
JUMPER, TEST POINT
LIGHT DETECTING MODULE
L.EMIT
LED.DSPLY
LED.INFRD
MODUL.RF
PHOT.CPL
PHOT.INTR
PHOT.RFLCT
PIN.TEST
PLST.RIVET
R.ARRAY
R.CAR
R.CAR.CHP
R.CAR.FP
R.FUS
R.MTL.CHP
R.MTL.FLM
R.MTL.OXD
R.MTL.PLAT
RSNR.CE
RSNR.CRYS
R.TW.CEM
R.WW
SCR.BND.HD
SCR.BW.HD
SCR.CUP
SCR.TERM
SCR.TR
SUPRT.PCB
SURG.PRTCT
SW.TACT
SW.LEAF
SW.LEVER
SW.MICRO
SW.PUSH
SW.RT.ENC
SW.RT.MTR
SW.RT
SW.SLIDE
TERM.SP
TERM.WRAP
THRMST.CHP
TR.CHP
TR.DGT
TR.DGT.CHP
TRANS
TRANS.PULS
TRANS.PWR
TUNER.AM
TUNER.FM
TUNER.PK
VR
VR.MTR
VR.SW
VR.SLIDE
VR.TRIM
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
LIGHT EMITTING MODULE
LED DISPLAY
LED, INFRARED
MODULATOR, RF
PHOTO COUPLER
PHOTO INTERRUPTER
PHOTO REFLECTOR
PIN, TEST POINT
PLASTIC RIVET
RESISTOR ARRAY
CARBON RESISTOR
CHIP RESISTOR
FLAME PROOF CARBON RESISTOR
FUSABLE RESISTOR
CHIP METAL FILM RESISTOR
METAL FILM RESISTOR
METAL OXIDE FILM RESISTOR
METAL PLATE RESISTOR
CERAMIC RESONATOR
CRYSTAL RESONATOR
TWIN CEMENT FIXED RESISTOR
WIRE WOUND RESISTOR
BIND HEAD B-TITE SCREW
BW HEAD TAPPING SCREW
CUP TITE SCREW
SCREW TERMINAL
SCREW, TRANSISTOR
SUPPORT, P.C.B.
SURGE PROTECTOR
TACT SWITCH
LEAF SWITCH
LEVER SWITCH
MICRO SWITCH
PUSH SWITCH
ROTARY ENCODER
ROTARY SWITCH WITH MOTOR
ROTARY SWITCH
SLIDE SWITCH
SPEAKER TERMINAL
WRAPPING TERMINAL
CHIP THERMISTOR
CHIP TRANSISTOR
DIGITAL TRANSISTOR
CHIP DIGITAL TRANSISTOR
TRANSFORMER
PULSE TRANSFORMER
POWER TRANSFORMER ASS’y
TUNER PACK, AM
TUNER PACK, FM
FRONT-END TUNER PACK
ROTARY POTENTIOMETER
POTENTIOMETER WITH MOTOR
POTENTIOMETER WITH ROTARY SW
SLIDE POTENTIOMETER
TRIMMER POTENTIOMETER
GX-900
C.A.EL.CHP
C.CE
C.CE.ARRAY
C.CE.CHP
C.CE.ML
C.CE.M.CHP
C.CE.SAFTY
C.CE.TUBLR
C.CE.SMI
C.EL
C.MICA
C.ML.FLM
C.MP
C.MYLAR
C.MYLAR.ML
C.PAPER
C.PLS
C.POL
C.POLY
C.PP
C.TNTL
C.TNTL.CHP
C.TRIM
CN
CN.BS.PIN
CN.CANNON
CN.DIN
CN.FLAT
CN.POST
COIL.MX.AM
COIL.AT.FM
COIL.DT.FM
COIL.MX.FM
COIL.OUTPT
DIOD.ARRAY
DIODE.BRG
DIODE.CHP
DIODE.VAR
DIOD.Z.CHP
DIODE.ZENR
DSCR.CE
FER.BEAD
FER.CORE
FET.CHP
FL.DSPLY
FLTR.CE
FLTR.COMB
FLTR.LC.RF
GND.MTL
GND.TERM
HOLDER.FUS
IC.PRTCT
JUMPER.CN
JUMPER.TST
L.DTCT
Note) Those parts marked with “#” are not included in the P.C.B. ass'y.
91
GX-900
P.C.B. CD
Schm
Ref. PART NO.
*
GX-900
CB1
CB2
CB3
CB4
CB5
CB7
CB8
CB9
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C29
C31
C32
C33
C34
C35
C36
C37
C38
C39
C40
C41
C42
C44
C45
C46
C47
V4004200
V2731000
VU929500
VU534900
VB390200
VB389900
VB858200
LB919030
VM929900
UN866100
UN866100
UR818100
UR818470
UB045100
UB045100
UB044100
UA952100
UB045100
UA655100
UR837470
UR866100
UB013100
UB044100
UR818100
UA655100
UR828100
UR838220
UR837100
UA954470
UA953180
UA953220
UA655100
UA953470
UA953220
UA953220
UA655270
UR818100
UB012560
UB045100
UA655330
UA654240
UB044100
VJ900300
VJ900300
UR818100
UR818470
UB044100
UB044100
UB044100
UB044100
UB044100
UR818100
UR866100
* New Parts
92
Schm
Ref. PART NO.
Description
P.C.B.
CN.FMN
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
C.EL
C.EL
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.MYLAR
C.CE.M.CHP
C.MYLAR
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.MYLAR
C.EL
C.EL
C.EL
C.MYLAR
C.MYLAR
C.MYLAR
C.MYLAR
C.MYLAR
C.MYLAR
C.MYLAR
C.MYLAR
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.MYLAR
C.MYLAR
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
CD
16P
6P
6P
6P
3P
3P
3P
15P
1uF
1uF
100uF
470uF
0.1uF
0.1uF
0.01uF
100pF
0.1uF
0.1uF
47uF
1uF
1000pF
0.01uF
100uF
0.1uF
100uF
220uF
10uF
0.047uF
1800pF
2200pF
0.1uF
4700pF
2200pF
2200pF
0.27uF
100uF
560pF
0.1uF
0.33uF
0.024uF
0.01uF
22pF
22pF
100uF
470uF
0.01uF
0.01uF
0.01uF
0.01uF
0.01uF
100uF
1uF
50V
50V
6.3V
6.3V
50V
50V
50V
50V
50V
50V
16V
50V
50V
50V
6.3V
50V
10V
16V
16V
50V
50V
50V
50V
50V
50V
50V
50V
6.3V
50V
50V
50V
50V
50V
50V
50V
6.3V
6.3V
50V
50V
50V
50V
50V
6.3V
50V
C48
C50
C51
C52
C53
C54
C55
C56
C57
C58
C59
C60
C61
C62
C63
C64
C65
C66
C67
C68
C69
C71
C72
C86
C87
C89
C90
C91
C100
C101
C102
D1
D2
D3
D4
D5
D6
D7
G1
G2
HS1
HS2
IC1
IC2
IC3
IC4
IC5
IC7
IC10
IC11
IC12
IC13
L1
UR818100
UB044100
UR866100
UA954100
UA954100
UR866100
UA655330
UB044100
UB044100
UB044100
UA953680
UA953220
UA953220
UA953680
UR828100
UR837330
UR818100
UR837220
UR837220
UR837220
UR837220
UA953150
UA953150
UB051100
VR498100
UB012470
UB044100
UB045100
UB045100
UB045100
UB045100
VT332900
VU993400
VT332900
VT332900
VT332900
VT332900
VU993800
VR463400
VR463400
Vi835500
VA119100
XV986A00
XS741A00
XR274A00
XR274A00
XT342A00
XQ248A00
XF291A00
XW501A00
XQ667A00
XS993A00
VU889500
* New Parts
Description
C.EL
C.CE.M.CHP
C.EL
C.MYLAR
C.MYLAR
C.EL
C.MYLAR
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.MYLAR
C.MYLAR
C.MYLAR
C.MYLAR
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.MYLAR
C.MYLAR
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
DIODE
DIODE.ZENR
DIODE
DIODE
DIODE
DIODE
DIODE.ZENR
TERM.GND
TERM.GND
HEAT.SINK
HEAT.SINK
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
COIL
100uF
6.3V
0.01uF
50V
1uF
50V
0.01uF
50V
0.01uF
50V
1uF
50V
0.33uF
50V
0.01uF
50V
0.01uF
50V
0.01uF
50V
6800pF
50V
2200pF
50V
2200pF
50V
6800pF
50V
100uF
10V
33uF
16V
100uF
6.3V
22uF
25V
22uF
25V
22uF
25V
22uF
25V
1500pF
50V
1500pF
50V
10pF
50V
6.8uF
6.3V
470pF
50V
0.01uF
50V
0.1uF
50V
0.1uF
50V
0.1uF
50V
0.1uF
50V
1SS355
MA8062-M 6.2V
1SS355
1SS355
1SS355
1SS355
MA8068-M 6.8V
D3.5 TP00385
D3.5 TP00385
PH-0124S-B
LA6541D DRIVER
AN8806SB
TA8409SE
TA8409SE
MN662741RPB1
TC74HC125AF BUS BU
uPC4570G2
M38197MAA-628FP
M5237L
TC74HC04AF INV
220uH
GX-900
P.C.B. CD & MD
Schm
Ref. PART NO.
VU889500
VR402300
VD678700
iC287820
VD678700
VD678700
VS883300
VR510800
VD678700
iC287820
iC287820
VD678700
VD678700
VD678500
HV753220
VH307000
VH307000
VH307000
VH307000
VH307000
Vi868300
VH307000
VU318400
VU318400
VL448600
VL448600
VJ719800
VJ802400
VJ828000
COIL
TR
TR.DGT
TR
TR.DGT
TR.DGT
TR
TR
TR.DGT
TR
TR
TR.DGT
TR.DGT
TR.DGT
R.CAR.FP
R.ARRAY
R.ARRAY
R.ARRAY
R.ARRAY
R.ARRAY
R.FUS
R.ARRAY
R.MTL.OXD
R.MTL.OXD
JUMPER.TST
JUMPER.TST
RSNR.CRYS
RSNR.CE
PIN
220uH
2SB647 C,D
DTC114ES
2SC2878 A,B
DTC114ES
DTC114ES
2SB1565 E,F
2SD2396 J,K
DTC114ES
2SC2878 A,B
2SC2878 A,B
DTC114ES
DTC114ES
DTA114ES
2.2Ω
1/4W
RGLE6X473J
RGLE6X473J
RGLE6X473J
RGLE6X473J
RGLE6X473J
0.68Ω
1/6W
RGLE6X473J
27Ω
1W
27Ω
1W
*
*
16.9344MHz
8MHz
IMSA-6024-03E
*
*
* CB1
* CB2
CB3
CB4
CB5
* CB6
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
V4004000
VB390500
V3733000
VB389800
VB390400
VL844700
VP682200
UR837100
UR866100
UA953330
UR837100
UR866100
UR818100
UB044100
UR838100
UB045100
VU545000
UB045100
UA953560
UR837220
UA953220
* New Parts
P.C.B.
CN.BS.PIN
CN
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
C.EL
C.EL
C.MYLAR
C.EL
C.EL
C.EL
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.MYLAR
C.EL
C.MYLAR
MD
9P
28P
2P
8P
3P
8P
10uF
1uF
3300pF
10uF
1uF
100uF
0.01uF
100uF
0.1uF
47000uF
0.1uF
5600pF
22uF
2200pF
*
16V
50V
50V
16V
50V
6.3V
50V
16V
50V
5.5V
50V
50V
25V
50V
Z
*
*
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
D1
D2
D3
D4
D5
D6
G1
HS1
IC1
IC2
IC3
IC4
IC5
L1
L2
L3
Q1
Q2
Q3
Q4
Q5
Q6
Q7
R1
R21
R45
R49
XL1
UA953330
UA953220
UR837220
UA953560
UR837100
UR838100
UR838100
UB045100
UR828470
UR866100
UR819100
UR866100
UA655330
UB045100
UR866100
UR866100
UB052100
UB052100
UR837100
UR837100
V3694000
UB045100
UB051390
VU993700
VV833200
VU991500
VV833200
VT332900
VT332900
VR463400
V3714600
XQ667A00
XW072A00
XF291A00
Xi297A00
XF291A00
VD473700
VP133800
VP133800
iC287820
iC287820
VK407600
iC174020
iA093320
VS883300
iC174020
HV755220
HV755220
RD557130
RD556470
VQ791000
VJ828000
EL300650
Description
C.MYLAR
C.MYLAR
C.EL
C.MYLAR
C.EL
C.EL
C.EL
C.CE.M.CHP
C.EL
C.EL
C.EL
C.EL
C.MYLAR
C.CE.M.CHP
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
DIODE.ZENR
DIODE
DIODE.ZENR
DIODE
DIODE
DIODE
TERM.GND
HEAT.SINK
IC
IC
IC
IC
IC
COIL
FER.BEAD
FER.BEAD
TR
TR
TR
TR
TR
TR
TR
R.CAR.FP
R.CAR.FP
R.THCK.CHP
R.THCK.CHP
RSNR.CE
PIN
SCR.BW.HD
3300pF
50V
2200pF
50V
22uF
25V
5600pF
50V
10uF
16V
100uF
16V
100uF
16V
0.1uF
50V
470uF
10V
1uF
50V
1000uF
6.3V
1uF
50V
0.33uF
50V
0.1uF
50V
1uF
50V
1uF
50V
100pF
50V
100pF
50V
10uF
16V
10uF
16V
4.7uF
10V
0.1uF
50V
39pF
50V
MA8068-L 6.6V
1SS380
MA8039-H 4.0V
1SS380
1SS355
1SS355
D3.5 TP00385
PUG26-25 GX-500ML
M5237L
M30622M8-703FP
uPC4570G2
TC74HCT04AF-T1
uPC4570G2
60uH
BL02RN1-R62T4
BL02RN1-R62T4
2SC2878 A,B
2SC2878 A,B
2SC4208A Q,R,S
2SC1740S R,S
2SA933S Q,R
2SB1565 E,F
2SC1740S R,S
220Ω
1/4W
220Ω
1/4W
13KΩ
1/10W
4.7KΩ
1/10W
10MHz
IMSA-6024-03E
3x8-8 FCRM3-BL
GX-900
L2
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q15
Q16
Q17
R17
R35
R56
R57
R85
R86
R91
R97
R145
R158
TP1
TP2
XL1
XL2
Schm
Ref. PART NO.
Description
* New Parts
93
GX-900
P.C.B. INPUT
Schm
Ref. PART NO.
GX-900
*
*
V4003000
V4004100
CB5
VQ963200
CB6
VM859600
CB10 VQ047500
CB13 VP082900
CB401 VB858700
CB403 VT620100
C1
UB044100
C2
UB044220
C3
UR818100
C4
UA952680
C5
UB012560
C6
UB012560
C7
UB012220
C8
UB012220
C15
UR838100
C16
UB044100
C17
UA952680
C18
UR837470
C19
UB044470
C20
UB044100
C21
UR866100
C22
UR838100
C23
UR838100
C24
UR865100
C25
UT652100
C26
UT652100
C27
UA953100
C28
UT653820
C29
UA953470
C30
UR837100
C31
UR847100
C32
UR837220
C33
UR866470
C34
UR837220
C35
UR837220
C36
UR866330
C37
UA954180
C38
FG612220
C39
FG612220
C40
UA954180
C41
UR866100
C42
UR837470
C43
UR866470
C44
UR866470
C45
UA655100
C46
UR865470
C47
UR866470
C48
UR866220
C49
UR866220
C50
UR866470
C51
UR866470
* New Parts
94
Schm
Ref. PART NO.
Description
P.C.B.
P.C.B.
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
L.DTCT
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.MYLAR
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.MYLAR
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.EL
C.EL
C.PP
C.PP
C.MYLAR
C.PP
C.MYLAR
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.MYLAR
C.CE
C.CE
C.MYLAR
C.EL
C.EL
C.EL
C.EL
C.MYLAR
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
INPUT(A)
INPUT(BG)
11P
15P
20P
25P
8P
TORX178A
0.01uF
0.022uF
100uF
680pF
560pF
560pF
220pF
220pF
100uF
0.01uF
680pF
47uF
0.047uF
0.01uF
1uF
100uF
100uF
0.1uF
100pF
100pF
1000pF
8200pF
4700pF
10uF
10uF
22uF
4.7uF
22uF
22uF
3.3uF
0.018uF
220pF
220pF
0.018uF
1uF
47uF
4.7uF
4.7uF
0.1uF
0.47uF
4.7uF
2.2uF
2.2uF
4.7uF
4.7uF
50V
50V
6.3V
50V
50V
50V
50V
50V
16V
50V
50V
16V
50V
50V
50V
16V
16V
50V
100V
100V
50V
100V
50V
16V
25V
25V
50V
25V
25V
50V
50V
50V
50V
50V
50V
16V
50V
50V
50V
50V
50V
50V
50V
50V
50V
C52
C53
C54
C55
C56
C57
C58
C59
C60
C61
C62
C63
C64
C65
C66
C67
C68
C69
C70
C71
C72
C73
C74
C75
C76
C77
C78
C79
C80
C81
C82
C83
C84
C85
C86
C87
C88
C89
C90
C91
C92
C93
C94
C95
C96
C97
C98
C99
C100
C101
C102
C103
C104
UR866470
UR866220
UA953270
UR866470
UR865220
UB044100
UR847100
UB052100
UB052100
UA953270
UR866470
UR866470
UA655100
UR866220
UR866220
UR866220
UR865220
UR848100
UR866100
UR837220
UR837100
UR847100
UR847100
UR837220
UR866100
UA655680
UA953680
UA954220
UB013220
UR866100
UA654750
UA953220
UA954680
UR847100
UR866100
UR847100
UA953220
UA654750
UA954680
UR847100
UB013220
UR866100
UR847100
UA954220
UA655680
UA953680
UR866100
UB052100
UR837100
UB052100
UR837100
VF992600
UB044100
* New Parts
Description
C.EL
C.EL
C.MYLAR
C.EL
C.EL
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.MYLAR
C.EL
C.EL
C.MYLAR
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.MYLAR
C.MYLAR
C.MYLAR
C.CE.M.CHP
C.EL
C.MYLAR
C.MYLAR
C.MYLAR
C.EL
C.EL
C.EL
C.MYLAR
C.MYLAR
C.MYLAR
C.EL
C.CE.M.CHP
C.EL
C.EL
C.MYLAR
C.MYLAR
C.MYLAR
C.EL
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.EL
C.EL
C.CE.M.CHP
4.7uF
2.2uF
2700pF
4.7uF
0.22uF
0.01uF
10uF
100pF
100pF
2700pF
4.7uF
4.7uF
0.1uF
2.2uF
2.2uF
2.2uF
0.22uF
100uF
1uF
22uF
10uF
10uF
10uF
22uF
1uF
0.68uF
6800pF
0.022uF
2200pF
1uF
0.075uF
2200pF
0.068uF
10uF
1uF
10uF
2200pF
0.075uF
0.068uF
10uF
2200pF
1uF
10uF
0.022uF
0.68uF
6800pF
1uF
100pF
10uF
100pF
10uF
4700uF
0.01uF
50V
50V
50V
50V
50V
50V
25V
50V
50V
50V
50V
50V
50V
50V
50V
50V
50V
25V
50V
25V
16V
25V
25V
25V
50V
50V
50V
50V
50V
50V
50V
50V
50V
25V
50V
25V
50V
50V
50V
25V
50V
50V
25V
50V
50V
50V
50V
50V
16V
50V
16V
5.5V
50V
GX-900
P.C.B. INPUT
Schm
Ref. PART NO.
UB052100
UB052100
UB245100
UB052100
UR866220
UB052100
UB052100
UB052100
UB052100
UA654750
UR847100
UR866100
UR847100
UR847100
UR866100
UR847100
UA654750
UB245100
UB245100
VJ900300
VJ900300
UB245100
UR837100
UR837100
UR837100
UR837100
UR866100
UB051470
UB051470
UN865470
UR838100
UR838100
UB051470
UB051470
UR866100
UB245100
UB245100
UR837100
UR865470
UR837100
UR837100
UR837100
UR837220
UB051470
UB051470
UR837220
UR837100
UR837100
UR837100
UR838330
UB012330
UB012330
UR837100
* New Parts
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.MYLAR
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.MYLAR
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.EL
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.EL
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.EL
100pF
100pF
0.1uF
100pF
2.2uF
100pF
100pF
100pF
100pF
0.075uF
10uF
1uF
10uF
10uF
1uF
10uF
0.075uF
0.1uF
0.1uF
22pF
22pF
0.1uF
10uF
10uF
10uF
10uF
1uF
47pF
47pF
0.47uF
100uF
100uF
47pF
47pF
1uF
0.1uF
0.1uF
10uF
0.47uF
10uF
10uF
10uF
22uF
47pF
47pF
22uF
10uF
10uF
10uF
330uF
330pF
330pF
10uF
50V
50V
25V
50V
50V
50V
50V
50V
50V
50V
25V
50V
25V
25V
50V
25V
50V
25V
25V
50V
50V
25V
16V
16V
16V
16V
50V
50V
50V
50V
16V
16V
50V
50V
50V
25V
25V
16V
50V
16V
16V
16V
25V
50V
50V
25V
16V
16V
16V
16V
50V
50V
16V
Z
C158
C159
C160
C165
C401
C404
C405
C406
C421
D3
D4
D5
D6
D7
D8
D10
D11
D12
D20
D21
D22
D23
D24
D25
D26
D400
HS1
IC1
IC2
IC3
IC4
IC5
IC6
IC7
IC8
IC9
IC10
IC11
IC21
IC26
IC401
L1
L2
L3
L401
L501
L502
PJ1
PJ4
Q1
Q2
Q3
Q4
UR837100
UN866100
UB052100
VF467300
UB245100
UB245100
UR837100
UR837100
UB044100
VU992700
VT332900
VT332900
VU992900
VU995100
VT332900
VT332900
VV833200
VT332900
VU995300
VT332900
VU992300
VU993000
VU993400
VU995300
VV220700
VU991500
VN126800
XF494A00
XD864A00
XG903A00
XG903A00
XF293A00
XV473A00
XV474A00
XW483A00
XF291A00
XG938A00
XF291A00
XF291A00
XR275A00
XV794A00
VM547800
GE900780
GE900780
VD473700
Vi491100
Vi491100
VV306900
VK437600
VV655700
VE613300
iC174020
VE613300
Description
C.EL
C.EL
C.CE.M.CHP
C.CE.TUBLR
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.CE.M.CHP
DIODE.ZENR
DIODE
DIODE
DIODE.ZENR
DIODE.ZENR
DIODE
DIODE
DIODE
DIODE
DIODE.ZENR
DIODE
DIODE.ZENR
DIODE.ZENR
DIODE.ZENR
DIODE.ZENR
DIODE.SHOT
DIODE.ZENR
HEAT.SINK
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
IC
COIL.BIAS
COIL.BIAS
COIL.BIAS
COIL
FER.CORE
FER.CORE
JACK.PIN
JACK.PIN
TR.DGT
TR
TR
TR
10uF
16V
1uF
50V
100pF
50V
0.01uF
16V(BG)
0.1uF
25V
0.1uF
25V
10uF
16V
10uF
16V
0.01uF
50V
MA8051-H 5.3V
1SS355
1SS355
MA8056-L 5.4V
MA8091-H 9.4V
1SS355
1SS355
1SS380
1SS355
MA8100-L 9.7V
1SS355
MA8047-H 4.9V
MA8056-M 5.6V
MA8062-M 6.2V
MA8100-L 9.7V
RB501V-40
MA8039-H 4.0V
U0T-16C25-MP
LB1641
uPC1330HA
TC4052BF PX
TC4052BF PX
uPD4066G-T1
CXA1897Q
LC75393E
M38199MF 05FP
uPC4570G2
BA15218N
uPC4570G2
uPC4570G2
BA3835S
TC74VHC153F MULTI
105KHz
105KHz
105KHz
60uH
BP53RB19012080M
BP53RB19012080M
4P
1P
DTC144EKA
2SB1237 Q,R
2SC1740S R,S
2SB1237 Q,R
GX-900
C105
C106
C107
C108
C109
C110
C111
C112
C113
C114
C115
C116
C117
C118
C119
C120
C121
C122
C123
C124
C125
C126
C127
C128
C129
C130
C131
C132
C133
C134
C135
C136
C137
C138
C139
C140
C141
C142
C143
C144
C145
C146
C147
C148
C149
C150
C151
C152
C153
C154
C155
C156
C157
Schm
Ref. PART NO.
Description
* New Parts
95
GX-900
P.C.B. INPUT & MAIN
GX-900
Schm
Ref. PART NO.
Z
Z
Z
Z
Z
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Q12
Q13
Q14
Q15
Q16
Q17
Q18
Q19
Q20
Q21
Q22
Q23
Q24
Q25
Q26
Q27
Q28
Q29
Q30
Q31
Q32
Q33
Q34
Q35
Q36
Q401
R27
R35
R59
R66
R95
R110
R155
R156
R251
R254
R258
R273
VR1
VR2
VR3
VR4
VR5
VR6
VR7
XL1
VV655300
VV655300
VV655700
V3752400
VV655500
VV655500
iC174020
iC174020
iC174020
VV655500
VV655700
VV655500
VE613400
VV655400
V3033500
VV655300
VZ725900
VV655000
VZ725900
VZ725900
VK407600
VS883400
VK407600
iA093320
VV655700
VV655700
VV655700
VV655700
VK407600
VV655500
VV655500
VV655500
VK407600
VP940100
HV755150
HV754220
HV755560
HV753560
HV754680
HV754220
HV754220
HV754220
HV754220
HV754220
HV754220
VJ693600
VJ694300
VJ694300
VJ693600
VJ693800
VJ693800
VJ692900
VJ802400
* New Parts
96
Schm
Ref. PART NO.
Description
TR.DGT
TR.DGT
TR.DGT
TR.DGT
TR.DGT
TR.DGT
TR
TR
TR
TR.DGT
TR.DGT
TR.DGT
TR
TR.DGT
TR.DGT
TR.DGT
TR
TR.DGT
TR
TR
TR
TR
TR
TR
TR.DGT
TR.DGT
TR.DGT
TR.DGT
TR
TR.DGT
TR.DGT
TR.DGT
TR
R.MTL.OXD
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
VR.TRIM
VR.TRIM
VR.TRIM
VR.TRIM
VR.TRIM
VR.TRIM
VR.TRIM
RSNR.CE
DTA144EKA
DTA144EKA
DTC144EKA
DTC143TKA
DTC124EKA
DTC124EKA
2SC1740S R,S
2SC1740S R,S
2SC1740S R,S
DTC124EKA
DTC144EKA
DTC124EKA
2SD1858 Q,R
DTC114EKA
DTC143XKA
DTA144EKA
2SD1938F S,T
DTA114EKA
2SD1938F S,T
2SD1938F S,T
2SC4208A Q,R,S
2SD2394 E,F
2SC4208A Q,R,S
2SA933S Q,R
DTC144EKA
DTC144EKA
DTC144EKA
DTC144EKA
2SC4208A Q,R,S
DTC124EKA
DTC124EKA
DTC124EKA
2SC4208A Q,R,S
33Ω
1W
150Ω
1/4W
22Ω
1/4W
560Ω
1/4W
5.6Ω
1/4W
68Ω
1/4W
22Ω
1/4W
22Ω
1/4W
22Ω
1/4W
22Ω
1/4W
22Ω
1/4W
22Ω
1/4W
B10KΩ
B150KΩ
B150KΩ
B10KΩ
B22KΩ
B22KΩ
B680Ω
8MHz
XL2
*
Z
Z
CB201
CB202
CB203
CB204
CB205
CB206
CB207
CB208
CB209
CB215
CB216
CB217
C201
C202
C203
C207
C208
C209
C210
C211
C212
C213
C214
C215
C216
C217
C221
C222
C223
C224
C225
C226
C227
C228
C229
C231
C232
C233
C234
C235
C236
C237
C239
C240
C241
C242
Description
VQ328900 RSNR.CRYS 32.768KHz
VJ828000 PIN
IMSA-6024-03E
BB071360 SCR.TERM
8.3x13
V4001100
VL845300
VB390700
VL844800
VP206500
VL845100
VK026500
Vi878400
VB390300
VP206500
VG879900
VP206500
VP206500
UR866470
VF466900
VF466900
VF466800
VF466800
UR838330
UR866470
UR867470
VG278400
UR867100
UR838100
UR838100
UR867100
VG278400
UR867220
UR867220
VF467300
FG650300
UT653220
UR798100
UT653220
UR798100
FG650300
UR858100
UR897100
UR858100
UR897100
UR866470
UA954470
UA954470
V3671100
V3671100
UR818100
V3671000
* New Parts
P.C.B.
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
HOLDER.FUS
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
HOLDER.FUS
CN.BS.PIN
HOLDER.FUS
HOLDER.FUS
C.EL
C.CE.TUBLR
C.CE.TUBLR
C.CE.TUBLR
C.CE.TUBLR
C.EL
C.EL
C.EL
C.CE.TUBLR
C.EL
C.EL
C.EL
C.EL
C.CE.TUBLR
C.EL
C.EL
C.CE.TUBLR
C.CE
C.PP
C.EL
C.PP
C.EL
C.CE
C.EL
C.EL
C.EL
C.EL
C.EL
C.MYLAR
C.MYLAR
C.EL
C.EL
C.EL
C.EL
MAIN
9P
11P
4P
EYF-52BC
7P
6P
6P
7P
EYF-52BC
2P
EYF-52BC
EYF-52BC
4.7uF
470pF
470pF
100pF
100pF
330uF
4.7uF
47uF
220pF
10uF
100uF
100uF
10uF
220pF
22uF
22uF
0.01uF
3pF
2200pF
100uF
2200pF
100uF
3pF
100uF
10uF
100uF
10uF
4.7uF
0.047uF
0.047uF
4700uF
4700uF
100uF
4700uF
50V
50V
50V
50V
50V
16V
50V
50V
50V
50V
16V
16V
50V
50V
50V
50V
16V
50V
100V
100V
100V
100V
50V
35V
100V
35V
100V
50V
50V
50V
71V
71V
6.3V
35V
GX-900
P.C.B. MAIN & OPERATION
Schm
Ref. PART NO.
V3671000
UA953220
UA953220
VF467300
VF467300
UA954100
UA954100
VR324800
VR324800
UA954470
UA954470
UA954100
UR739470
UR749100
VJ599100
UA954100
UA954100
VS741700
UR867100
UR867470
UR847100
VG443100
VG440500
VG440500
VG440500
VN008700
VN008700
VN008700
VD631600
VG440500
VN011400
VN011400
VN011300
VD631600
VR253700
VG440500
KB000750
KB001660
VR463400
V2692300
XW056A00
VU038100
VU038100
iC287820
iC287820
VR510800
VS883300
VS883300
VP883000
VP883100
VP883100
iC287820
iC174020
* New Parts
C.EL
C.MYLAR
C.MYLAR
C.CE.TUBLR
C.CE.TUBLR
C.MYLAR
C.MYLAR
C.MYLAR
C.MYLAR
C.MYLAR
C.MYLAR
C.MYLAR
C.EL
C.EL
C.CE.TUBLR
C.MYLAR
C.MYLAR
C.CE.SAFTY
C.EL
C.EL
C.EL
DIODE.ZENR
DIODE.ZENR
DIODE.ZENR
DIODE.ZENR
DIODE
DIODE
DIODE
DIODE
DIODE.ZENR
DIODE.BRG
DIODE.BRG
DIODE.BRG
DIODE
DIODE.BRG
DIODE.ZENR
FUSE.MNI
FUSE
TERM.GND
HEAT.SINK
IC
COIL
COIL
TR
TR
TR
TR
TR
TR
TR
TR
TR
TR
4700uF
35V
2200pF
50V
2200pF
50V
0.01uF
16V
0.01uF
16V
0.01uF
50V
0.01uF
50V
0.047uF
100V
0.047uF
100V
0.047uF
50V
0.047uF
50V
0.01uF
50V
4700uF
16V
1000uF
25V
0.1uF
50V
0.01uF
50V
0.01uF
50V
0.01uF
275V
10uF
50V
47uF
50V
10uF
25V
MTZJ27D 27V
MTZJ13B 13V
MTZJ13B 13V
MTZJ13B 13V
1SS270A
1SS270A
1SS270A
1SS133,176,HSS104
MTZJ13B 13V
D5SB20 5A 200V
D5SB20 5A 200V
D3SBA20 4A 200V
1SS133,176,HSS104
S1NB20 1.0A 200V
MTZJ13B 13V
T2.0A 250V
T1.6A 250V
D3.5 TP00385
BPUE36-30
STK496-420Y 80W 2C
1.5uH
1.5uH
2SC2878 A,B
2SC2878 A,B
2SD2396 J,K
2SB1565 E,F
2SB1565 E,F
2SA893A D,E
2SC1890A D,E
2SC1890A D,E
2SC2878 A,B
2SC1740S R,S
Q214
Q216
Z # Q218
Q219
Q220
Z
R222
Z
R225
Z
R226
Z
R227
Z
R230
R234
R237
R242
R245
R247
R250
R263
Z
R269
Z
R270
Z
R277
RY201
Z
RY203
Z
T203
TE201
*
CB804
CB805
CB806
C822
C842
C843
C844
C845
C846
C847
C848
C849
C850
C851
C853
C854
C855
C858
C859
C860
C861
C862
Description
iC174020
iC174020
VR510800
iC174020
VP883000
HV753100
HV753100
HV753100
VP940400
VP940400
V3158200
V3158200
HV754100
HV754100
HV754100
HV754100
HV754470
HV753100
HV753100
HV753100
VU161600
V2712300
XV445A00
V2996200
VJ828000
BB071360
EP600140
TR
TR
TR
TR
TR
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.MTL.OXD
R.MTL.OXD
R.MTL.PLAT
R.MTL.PLAT
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
RELAY
RELAY
TRANS.PWR
TERM.SP
PIN
SCR.TERM
SCR.BND.HD
2SC1740S R,S
2SC1740S R,S
2SD2396 J,K
2SC1740S R,S
2SA893A D,E
1Ω
1/4W
1Ω
1/4W
1Ω
1/4W
100Ω
1W
100Ω
1W
0.22Ω
0.22Ω
10Ω
1/4W
10Ω
1/4W
10Ω
1/4W
10Ω
1/4W
47Ω
1/4W
1Ω
1/4W
1Ω
1/4W
1Ω
1/4W
DC OSA-SS-224DM3
DC SDT-S-112LMR
4P CJ-9026-06-0203
IMSA-6024-03E
8.3x13
3x10
MFZN2-BL
V4003300
VQ045400
VB858500
VQ045000
UR818100
UB044470
UB245100
UB044470
UB245100
UR866100
UR866100
UA953220
UA953220
UA953680
UA953680
UB013100
UB013100
UR837100
UR837100
UR818100
UR818100
UR837100
UR837100
P.C.B.
CN.BS.PIN
CN.BS.PIN
CN.BS.PIN
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.MYLAR
C.MYLAR
C.MYLAR
C.MYLAR
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.EL
C.EL
C.EL
C.EL
OPERATION
25P
6P
20P
100uF
6.3V
0.047uF
50V
0.1uF
25V
0.047uF
50V
0.1uF
25V
1uF
50V
1uF
50V
2200pF
50V
2200pF
50V
6800pF
50V
6800pF
50V
1000pF
50V
1000pF
50V
10uF
16V
10uF
16V
100uF
6.3V
100uF
6.3V
10uF
16V
10uF
16V
GX-900
C243
C244
C245
C246
C247
C248
C249
C250
C251
C252
C253
C254
C255
C262
C263
C264
C265
Z
C266
C267
C268
C300
Z
D201
D202
D203
D204
D205
D206
D208
D209
D210
Z
D211
Z
D212
Z
D213
D214
Z
D215
D217
Z
F201
Z
F202
G201
HS201
IC201
L201
L202
Q201
Q202
Z # Q204
Z
Q206
Z
Q207
Q208
Q209
Q210
Q212
Q213
Schm
Ref. PART NO.
Description
* New Parts
97
GX-900
P.C.B. OPERATION & TUNER
Schm
Ref. PART NO.
GX-900
C863
C864
C868
C870
C872
C873
C874
C875
C876
C877
C878
C879
C880
C881
C890
C901
C902
D802
D803
D804
D810
IC810
IC811
IC814
IC815
JK803
Q801
Q802
Q803
Q804
Q805
Q806
R828
R829
R830
R831
R846
R851
R894
R895
R951
SW801
SW802
SW803
SW804
SW805
SW806
SW807
SW808
SW809
SW810
SW811
SW812
UB012270
UB012270
UA953820
UA953820
UB013100
UB013100
UR818100
UB245100
UB052100
UM388100
UR866470
UR866470
UR866470
UB245100
UR837100
UB052100
UB245100
VS132300
VR711400
VU992900
V3253600
XB247A00
XJ596A00
XT952A00
XW059A00
VT941600
iC287820
iC287820
iC174020
iC174020
iA093320
iC174020
HV754330
HV754330
HV754680
HV754680
HV754390
HV754390
HV755100
HV755100
HV754220
VR101400
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
* New Parts
98
Schm
Ref. PART NO.
Description
C.CE.M.CHP
C.CE.M.CHP
C.MYLAR
C.MYLAR
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.EL
C.EL
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.CE.M.CHP
LED(re)
LED(gr)
DIODE.ZENR
LED(bu)
IC
IC
IC
IC
JACK.MNI
TR
TR
TR
TR
TR
TR
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
R.CAR.FP
SW.RT.ENC
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
270pF
50V
270pF
50V
8200pF
50V
8200pF
50V
1000pF
50V
1000pF
50V
100uF
6.3V
0.1uF
25V
100pF
50V
100uF
10V
4.7uF
50V
4.7uF
50V
4.7uF
50V
0.1uF
25V
10uF
16V
100pF
50V
0.1uF
25V
SLR-325VCT31
SLR-325MC
MA8056-L 5.4V
SELU1E50CM
uPC4570HA
NJM78L05A
YSS247-D
M66004MASP
SW HTJ-035-17AB
2SC2878 A,B
2SC2878 A,B
2SC1740S R,S
2SC1740S R,S
2SA933S Q,R
2SC1740S R,S
33Ω
1/4W
33Ω
1/4W
68Ω
1/4W
68Ω
1/4W
39Ω
1/4W
39Ω
1/4W
100Ω
1/4W
100Ω
1/4W
22Ω
1/4W
EC16B24204
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SW813
SW814
SW815
SW816
SW817
SW818
SW819
SW820
SW821
SW822
SW823
SW824
SW825
SW826
SW827
SW828
SW829
SW830
SW831
SW832
SW833
SW834
SW835
SW836
U801
V801
VR802
VR804
*
*
CB1
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
Description
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VT941400
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
VG392900
V2856200
V2959000
V2969400
V2969500
VJ828000
VU351500
V3112800
V3281500
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.RT.ENC
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
SW.TACT
L.DTCT
FL.DSPLY
VR
VR
PIN
SPACER
SHEET.FL
SPACER.LED
LDS-20K
V4000300
V4000400
VQ961400
UB044100
UR838100
UB044100
UR865220
UB044100
UB044100
UB044100
UB044100
UB044470
VA760500
UR837100
UB044100
UR837470
UB044470
UB044100
P.C.B./CHP
P.C.B./CHP
CN.BS.PIN
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE
C.EL
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.CE.M.CHP
TUNER/TU-02(A)
TUNER/TU-02(BG)
11P
0.01uF
50V
100uF
16V
0.01uF
50V
0.22uF
50V
0.01uF
50V
0.01uF
50V
0.01uF
50V
0.01uF
50V
0.047uF
50V
8pF
50V
10uF
16V
0.01uF
50V
47uF
16V
0.047uF
50V
0.01uF
50V
* New Parts
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
EC16B24304
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
SKHVAA
PIC-28043TH2
16-BT-63GK
B50KΩ
B100KΩ
IMSA-6024-03E
FL
GX-900
P.C.B. TUNER
Schm
Ref. PART NO.
UB044470
UR866100
UR865470
UR866100
UR866100
UB045100
UB044470
UR866220
UR837330
UB044470
UR866330
UB044470
UR837220
UB014270
UB012680
UB052100
UR837100
UA954270
UA954270
UR837100
UR837100
UR866470
UR866470
UB013270
UB013270
UB044100
UR837100
UR817470
UR817470
UR838100
UB052100
UR866100
UR837100
VJ899500
VJ899500
UB052100
UR817470
UB012330
UR817470
UR817470
UB012560
VJ900500
VJ900500
UB045100
VU995000
VT332900
VT332900
VT332900
VU993000
VU995400
XV228A00
XV229A00
XV230A00
* New Parts
C.CE.M.CHP
C.EL
C.EL
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.MYLAR
C.MYLAR
C.EL
C.EL
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.EL
C.EL
C.EL
C.CE.M.CHP
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.EL
C.CE.M.CHP
C.EL
C.EL
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
C.CE.M.CHP
DIODE.ZENR
DIODE
DIODE
DIODE
DIODE.ZENR
DIODE.ZENR
IC
IC
IC
0.047uF
50V
1uF
50V
0.47uF
50V
1uF
50V
1uF
50V
0.1uF
50V
0.047uF
50V
2.2uF
50V
33uF
16V
0.047uF
50V
3.3uF
50V
0.047uF
50V
22uF
25V
0.027uF
50V
680pF
50V(A)
100pF
50V(BG)
10uF
16V
0.027uF
50V
0.027uF
50V
10uF
16V
10uF
16V
4.7uF
50V
4.7uF
50V
2700pF
50V
2700pF
50V
0.01uF
50V
10uF
16V
47uF
6.3V
47uF
6.3V
100uF
16V
100pF
50V
1uF
50V
10uF
16V
10pF
50V
10pF
50V
100pF
50V
47uF
6.3V(BG)
330pF
50V(BG)
47uF
6.3V(BG)
47uF
6.3V(BG)
560pF
50V(BG)
27pF
50V(BG)
27pF
50V(BG)
0.1uF
50V(BG)
MA8091-M 9.1V
1SS355
1SS355
1SS355
MA8056-M 5.6V
MA8100-M 10V
LA1838 F AM IF
LC72131M
LC72720NM(BG)
Schm
Ref. PART NO.
L1
* L1
L2
* L2
L3
L4
L5
L6
L7
L8
L9
PK1
PK2
Q1
Q2
Q3
R1
R3
R17
R40
TE1
XL1
XL2
* XL4
GG000560
V4545200
GG000560
V4545200
VU887900
VU434500
VR888000
VR888000
VU889500
VU889500
VU889500
VU134500
VU333700
iC053540
VD678500
iC1815I0
HV755150
HV755220
VV901100
HV755680
VU477800
V2717200
VY734600
V3930900
BB071360
Description
FLTR.CE
FLTR.CE
FLTR.CE
FLTR.CE
COIL
FLTR.CE
FLTR.LC
FLTR.LC
COIL
COIL
COIL
TUNER.FM
COIL.RF.AM
TR
TR.DGT
TR
R.CAR.FP
R.CAR.FP
R.MTL.OXD
R.CAR.FP
TERM.ANT
FLTR.CE
RSNR.CRYS
RSNR.CRYS
SCR.TERM
SFE10.7MS3GHY-A(A)
SFE10.7MJA1(BG)
SFE10.7MS3GHY-A(A)
SFE10.7MJA1(BG)
10uH
450K PCF -049A
19KHz
19KHz
220uH(BG)
220uH(BG)
220uH(BG)
TFFJ4E515A
940536051A
2SC535 A,B,C
DTA114ES
2SC1815 Y
150Ω
1/4W
220Ω
1/4W
120Ω
1W
680Ω
1/4W
AJ-2038-040
10.7 CDA10.7MG74-A
7.2MHz
4.332MHz(BG)
8.3x13
GX-900
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C40
C41
C57
C58
C59
C60
C61
C62
C63
C64
C65
C67
C68
C69
C70
C71
C72
C73
C74
D1
D2
D3
D4
D5
D11
IC1
IC2
IC4
Description
* New Parts
99
GX-900
P.C.B. MD MAIN
Schm
GX-900
Ref.
Schm
PART NO.
Description
Remarks
*
AAX02260
P.C.B.
MAIN
PART NO.
Description
Remarks
92LPWB2976MDSS
* C1504
* C1100
AAX02530
C.CHP
4.7uF
* C1101
AAX02750
C.CHP
* C1102
AAX02770
* C1103
AAX02570
C.CHP
220pF
50V
VCCCCY1HH221J
10V
RCKZ0003AWZZ
* C1505
AAX02540
C.CHP
100pF
50V
VCCCCY1HH101J
1uF
6.3V
VCKYTV0JB105K
* C1506
AAX02540
C.CHP
100pF
50V
VCCCCY1HH101J
C.CHP
1uF
16V
VCKYTV1CF105K
* C1508
AAX02660
C.CHP
0.047uF 16V
VCKYCY1CB473K
AAX02800
C.CHP
0.027uF 50V
VCKYTV1HB273K
* C1509
AAX02660
C.CHP
0.047uF 16V
VCKYCY1CB473K
* C1104
AAX02810
C.CHP
0.033uF 50V
VCKYTV1HB333K
* C1511
AAX02560
C.CHP
22pF
50V
VCCCCY1HH220J
* C1105
AAX02690
C.CHP
3300pF 50V
VCKYCY1HB332K
* C1600
AAX02730
C.CHP
1uF
16V
VCKYTQ1CF105Z
* C1106
AAX02750
C.CHP
1uF
VCKYTV0JB105K
* C1601
AAX02610
C.CHP
820pF
50V
VCCSCY1HL821J
* C1107
AAX02650
C.CHP
0.033uF 16V
VCKYCY1CB333K
* C1602
AAX02610
C.CHP
820pF
50V
VCCSCY1HL821J
* C1108
AAX02760
C.CHP
0.47uF 16V
VCKYTV1CB474K
* C1603
AAX02610
C.CHP
820pF
50V
VCCSCY1HL821J
* C1109
AAX02750
C.CHP
1uF
VCKYTV0JB105K
* C1604
AAX02610
C.CHP
820pF
50V
VCCSCY1HL821J
* C1110
AAX02820
C.CHP
4700pF 50V
VCKYTV1HB472K
* C1606
AAX02520
C.CHP
10uF
10V
RCKZ0002AWZZ
* C1111
AAX02760
C.CHP
0.47uF 16V
VCKYTV1CB474K
* C1607
AAX02780
C.CHP
1uF
16V
VCKYTV1CF105Z
* C1112
AAX02590
C.CHP
330pF
50V
VCCCCY1HH331J
* C1608
AAX02490
C.EL.CHP
100uF
10V
VCEAPS107AF1A
* C1113
AAX02580
C.CHP
270pF
50V
VCCCCY1HH271J
* C1610
AAX02530
C.CHP
4.7uF
10V
RCKZ0003AWZZ
* C1114
AAX02580
C.CHP
270pF
50V
VCCCCY1HH271J
* C1611
AAX02710
C.CHP
8200pF 50V
VCKYCY1HB822K
* C1115
AAX02580
C.CHP
270pF
50V
VCCCCY1HH271J
* C1612
AAX02710
C.CHP
8200pF 50V
VCKYCY1HB822K
* C1116
AAX02580
C.CHP
270pF
50V
VCCCCY1HH271J
* C1613
AAX02680
C.CHP
1500pF 50V
VCKYCY1HB152K
* C1117
AAX02580
C.CHP
270pF
50V
VCCCCY1HH271J
* C1615
AAX02680
C.CHP
1500pF 50V
VCKYCY1HB152K
* C1118
AAX02780
C.CHP
1uF
16V
VCKYTV1CF105Z
* C1616
AAX02490
C.EL.CHP
100pF
10V
VCEAPS107AF1A
* C1119
AAX02750
C.CHP
1uF
6.3V
VCKYTV0JB105K
* C1619
AAX02590
C.CHP
330pF
50V
VCCCCY1HH331J
6.3V
* C1120
AAX02830
C.CHP
0.01uF 50V
VCKYTV1HF103Z
* C1700
AAX02510
C.EL.CHP
47uF
4V
VCEAPS476AF0G
* C1200
AAX02780
C.CHP
1uF
16V
VCKYTV1CF105Z
* C1701
AAX02510
C.EL.CHP
47uF
4V
VCEAPS476AF0G
* C1201
AAX02520
C.CHP
10uF
10V
RCKZ0002AWZZ
* C1702
AAX02620
C.CHP
0.01uF 16V
* C1202
AAX02780
C.CHP
1uF
16V
VCKYTV1CF105Z
* C1703
AAX02660
C.CHP
0.047uF 16V
VCKYCY1CB473K
* C1203
AAX02780
C.CHP
1uF
16V
VCKYTV1CF105Z
* C1704
AAX02510
C.EL.CHP
47uF
VCEAPS476AF0G
4V
VCKYCY1CB103K
* C1204
AAX02660
C.CHP
0.047uF 16V
VCKYCY1CB473K
* C1705
AAX02660
C.CHP
0.047uF 16V
VCKYCY1CB473K
* C1205
AAX02780
C.CHP
1uF
VCKYTV1CF105Z
* C1706
AAX02830
C.CHP
0.01uF 50V
VCKYTV1HF103Z
* C1206
AAX02790
C.CHP
1200pF 50V
VCKYTV1HB122K
* C1707
AAX02780
C.CHP
1uF
VCKYTV1CF105Z
* C1207
AAX02780
C.CHP
1uF
16V
VCKYTV1CF105Z
* C1708
AAX02830
C.CHP
0.01uF 50V
VCKYTV1HF103Z
* C1208
AAX02550
C.CHP
12pF
50V
VCCCCY1HH120J
* C1709
AAX02830
C.CHP
0.01uF 50V
VCKYTV1HF103Z
* C1209
AAX02550
C.CHP
12pF
50V
VCCCCY1HH120J
* C1710
AAX02480
C.EL.CHP
10uF
16V
RCEZ1620AFZZ
* C1210
AAX02560
C.CHP
22pF
50V
VCCCCY1HH220J
* C1711
AAX02510
C.EL.CHP
47uF
4V
VCEAPS476AF0G
16V
16V
16V
* C1300
AAX02600
C.CHP
120pF
50V
VCCCTV1HH121J
* C1712
AAX02480
C.EL.CHP
10uF
* C1301
AAX02640
C.CHP
0.027uF 16V
VCKYCY1CB273K
* C1713
AAX02830
C.CHP
0.01uF 50V
VCKYTV1HF103Z
* C1302
AAX02520
C.CHP
10uF
10V
RCKZ0002AWZZ
* C1714
AAX02780
C.CHP
1uF
VCKYTV1CF105Z
* C1303
AAX02530
C.CHP
4.7uF
10V
RCKZ0003AWZZ
* C1715
AAX02830
C.CHP
0.01uF 50V
VCKYTV1HF103Z
* C1304
AAX02520
C.CHP
10uF
10V
RCKZ0002AWZZ
* C1716
AAX02510
C.EL.CHP
47uF
4V
VCEAPS476AF0G
* C1400
AAX02630
C.CHP
0.022uF 16V
VCKYCY1CB223K
* C1800
AAX02500
C.EL.CHP
220uF
4V
VCEAPS227AF0G
* C1401
AAX02630
C.CHP
0.022uF 16V
VCKYCY1CB223K
* C1801
AAX02520
C.CHP
10uF
10V
RCKZ0002AWZZ
* C1402
AAX02700
C.CHP
680pF
50V
VCKYCY1HB681K
* C1802
AAX02520
C.CHP
10uF
10V
RCKZ0002AWZZ
* C1403
AAX02660
C.CHP
0.047uF 16V
VCKYCY1CB473K
* C1803
AAX02490
C.EL.CHP
100pF
10V
VCEAPS107AF1A
* C1404
AAX02630
C.CHP
0.022uF 16V
VCKYCY1CB223K
* C1804
AAX02740
C.CHP
2.2uF
16V
VCKYTQ1CF225Z
* C1405
AAX02700
C.CHP
680pF
50V
VCKYCY1HB681K
* C1805
AAX02780
C.CHP
1uF
16V
VCKYTV1CF105Z
* C1406
AAX02630
C.CHP
0.022uF 16V
VCKYCY1CB223K
* CN1101 AAX01400
CN.PLUG
28P
QCNCWY028AFZZ
* C1407
AAX02660
C.CHP
0.047uF 16V
VCKYCY1CB473K
* CN1300 AAX01380
CN.PLUG
2P
QCNCM891BAFZZ
* C1408
AAX02630
C.CHP
0.022uF 16V
VCKYCY1CB223K
* CN1401 AAX01390
CN.PLUG
5P
QCNCWXC05AFZZ
* C1409
AAX02670
C.CHP
0.1uF
25V
VCKYCY1EF104Z
* CN1501 AAX01410
CN.PLUG
28P
QCNCWZ028AFZZ
* C1410
AAX02780
C.CHP
1uF
16V
VCKYTV1CF105Z
* CN1602 AAX01350
CN.PLUG
2P
QCNCM890BAF02
* C1411
AAX02590
C.CHP
330pF
* C1501
AAX02780
C.CHP
1uF
* C1502
AAX02570
C.CHP
220pF
* C1503
AAX02720
C.CHP
* New Parts
100
6.3V
Ref.
50V
16V
RCEZ1620AFZZ
VCCCCY1HH331J
* CN1603 AAX01370
CN.PLUG
2P
QCNCM890BAFZZ
VCKYTV1CF105Z
* CN1604 AAX01360
CN.PLUG
2P
QCNCM890BAF06
50V
VCCCCY1HH221J
* CW1901 AAX01340
CN.FLT
5P
QCNWN1042AWZZ
0.33uF 16V
VCKYTQ1CB334K
* CW1903 AAX02360
CN.BS.PIN
2P
QCNWN1044AWZZ
16V
* New Parts
GX-900
P.C.B. MD MAIN
Schm
Ref.
Schm
PART NO.
Description
Remarks
PART NO.
Description
Remarks
* D1300
AAX02470
DIODE
SB0209CP
VHDSB0209CP1
* R1111
Ref.
AAX01910
R.CAR.CHP
22KΩ
1/16W
* D1301
AAX02470
DIODE
SB0209CP
VHDSB0209CP1
* R1112
AAX01910
R.CAR.CHP
22KΩ
1/16W
* D1401
AAX02460
DIODE
SB00703Q
VHDSB00703Q1
* R1113
AAX01710
R.CAR.CHP
0Ω
1/16W
VRSCY1JB223J
VRSCY1JB223J
VRSCY1JB000J
* IC1101
AAX02180
IC
IR3R55
VHIIR3R55//1
* R1200
AAX01820
R.CAR.CHP
120KΩ 1/16W
VRSCY1JB124J
* IC1201
AAX04880
IC
LR376484
VHILR3764841
* R1201
AAX01820
R.CAR.CHP
120KΩ 1/16W
VRSCY1JB124J
* IC1202
AAX02150
IC
IX2474AF
RHIX2474AFZZ
* R1202
AAX01860
R.CAR.CHP
150KΩ 1/16W
VRSCY1JB154D
* IC1300
AAX02160
IC
74ACT02F
VHI74ACT02F1
* R1203
AAX01860
R.CAR.CHP
150KΩ 1/16W
VRSCY1JB154D
* IC1401
AAX02140
IC
IX0290AW
RHIX0290AWZZ
* R1204
AAX02070
R.CAR.CHP
62KΩ
1/16W
VRSCY1JB623J
AAX02200
IC
S29294A
VHIS29294A/1
* R1205
AAX02070
R.CAR.CHP
62KΩ
1/16W
VRSCY1JB623J
* IC1601
AAX02170
IC
BA5984FP
VHIBA5984FP1
* R1206
AAX01990
R.CAR.CHP
33KΩ
1/16W
VRSCY1JB333J
* IC1701
AAX02210
IC
UDA1344
VHIUDA1344/1
* R1207
AAX01990
R.CAR.CHP
33KΩ
1/16W
VRSCY1JB333J
* IC1702
AAX02190
IC
NJM431U
VHINJM431U/1
* R1208
AAX01900
R.CAR.CHP
220Ω
1/16W
VRSCY1JB221J
* IC1801
AAX02220
IC
XC62EP32
VHIXC62EP321
* R1209
AAX01730
R.CAR.CHP
100Ω
1/16W
VRSCY1JB101J
* L1100
AAX02230
IC
0.47uH
VPBNNR47K0000
* R1210
AAX01900
R.CAR.CHP
220Ω
1/16W
VRSCY1JB221J
* L1101
AAX02330
COIL
10uH
VPBNN100K0000
* R1211
AAX01900
R.CAR.CHP
220Ω
1/16W
VRSCY1JB221J
* L1200
AAX02340
COIL
4.7uH
VPBNN4R7K0000
* R1212
AAX02030
R.CAR.CHP
47Ω
1/16W
VRSCY1JB470J
* L1201
AAX02230
COIL
0.47uH
VPBNNR47K0000
* R1214
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* L1300
AAX02350
COIL
47uH
VPNM470K0000
* R1215
AAX01790
R.CAR.CHP
1MΩ
1/16W
VRSCY1JB105J
* L1301
AAX02350
COIL
47uH
VPNM470K0000
* R1216
AAX01710
R.CAR.CHP
0Ω
* L1501
AAX02320
COIL
1uH
RCILZ0016AWZZ
* R1217
AAX01830
R.CAR.CHP
150Ω
1/16W
VRSCY1JB151J
* L1503
AAX02340
COIL
4.7uH
VPBNN4R7K0000
* R1219
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* L1600
AAX02320
COIL
1uH
RCILZ0016AWZZ
* R1220
AAX01710
R.CAR.CHP
0Ω
* L1700
AAX02330
COIL
10uH
VPBNN100K0000
* R1221
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* L1701
AAX02330
COIL
10uH
VPBNN100K0000
* R1222
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* Q1300
AAX02100
FET
2SK2909
VS2SK2909//1
* R1223
AAX01730
R.CAR.CHP
100Ω
1/16W
* Q1301
AAX02090
FET
2SK1473
VS2SK1473//1
* R1224
AAX01710
R.CAR.CHP
0Ω
1/16W
VRSCY1JB000J
* Q1302
AAX02100
FET
2SK2909
VS2SK2909//1
* R1300
AAX03090
R.CAR.CHP
0Ω
1/10W
VRSTV2AB000J
* Q1303
AAX02090
FET
2SK1473
VS2SK1473//1
* R1301
AAX01720
R.CAR.CHP
10Ω
1/16W
VRSCY1JB100J
* Q1400
AAX02890
TR
RNC1404
VSRNC1404//1
* R1302
AAX03090
R.CAR.CHP
0Ω
1/10W
VRSTV2AB000J
1/8W
VRSTQ2BB000J
1/16W
1/16W
VRSCY1JB000J
VRSCY1JB000J
VRSCY1JB101J
* Q1401
AAX02890
TR
RNC1404
VSRNC1404//1
* R1303
AAX03060
R.CAR.CHP
0Ω
* Q1402
AAX02880
TR
RN2404
VSRN2404///1
* R1304
AAX03150
R.CAR.CHP
680Ω
1/10W
VRSTV2AB681J
* Q1403
AAX02880
TR
RN2404
VSRN2404///1
* R1400
AAX01940
R.CAR.CHP
2.7KΩ 1/16W
VRSCY1JB272J
* Q1500
AAX02900
TR
RNC1407
VSRNC1407//1
* R1401
AAX01840
R.CAR.CHP
1.5KΩ 1/16W
VRSCY1JB152J
* Q1700
AAX02860
TR
2SC2412KR
VS2SC2412KR1
* R1402
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
* Q1701
AAX02890
TR
RNC1404
VSRNC1404//1
* R1403
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
* Q1702
AAX02840
TR
2SA1162G
VS2SA1162G/1
* R1404
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
* Q1800
AAX02900
TR
RNC1407
VSRNC1407//1
* R1405
AAX01980
R.CAR.CHP
3.3KΩ 1/16W
VRSCY1JB332J
* Q1801
AAX02840
TR
2SA1162G
VS2SA1162G/1
* R1406
AAX01780
R.CAR.CHP
100KΩ 1/16W
VRSCY1JB104J
* Q1802
AAX02900
TR
RNC1407
VSRNC1407//1
* R1407
AAX01780
R.CAR.CHP
100KΩ 1/16W
VRSCY1JB104J
* Q1803
AAX02870
TR
RN1406
VSRN1406///1
* R1408
AAX01980
R.CAR.CHP
3.3KΩ 1/16W
VRSCY1JB332J
* Q1804
AAX02850
TR
2SA1314C
VS2SA1314C/1
* R1409
AAX01750
R.CAR.CHP
1KΩ
VRSCY1JB102J
* Q1805
AAX02850
TR
2SA1314C
VS2SA1314C/1
* R1410
AAX01980
R.CAR.CHP
3.3KΩ 1/16W
VRSCY1JB332J
* Q1806
AAX02870
TR
RN1406
VSRN1406///1
* R1411
AAX01750
R.CAR.CHP
1KΩ
VRSCY1JB102J
1/16W
1/16W
* R1100
AAX03080
R.CAR.CHP
27Ω
1/8W
VRSTQ2BB270J
* R1412
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1101
AAX01880
R.CAR.CHP
1Ω
1/16W
VRSCY1JB1R0J
* R1413
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
* R1102
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1414
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
* R1103
AAX02020
R.CAR.CHP
390KΩ 1/16W
VRSCY1JB394J
* R1415
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1105
AAX01810
R.CAR.CHP
1.2KΩ 1/16W
VRSCY1JB122J
* R1416
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1106
AAX02060
R.CAR.CHP
56KΩ
1/16W
VRSCY1JB563J
* R1417
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1107
AAX02050
R.CAR.CHP
560Ω
1/16W
VRSCY1JB561J
* R1419
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1108
AAX01910
R.CAR.CHP
22KΩ
1/16W
VRSCY1JB223J
* R1420
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1109
AAX01910
R.CAR.CHP
22KΩ
1/16W
VRSCY1JB223J
* R1421
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1110
AAX01910
R.CAR.CHP
22KΩ
1/16W
VRSCY1JB223J
* R1422
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
*
New Parts
*
GX-900
* IC1402
New Parts
101
GX-900
P.C.B. MD MAIN & OTHER
Schm
GX-900
Ref.
Description
Remarks
PART NO.
Description
Remarks
* R1423
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1706
AAX01790
R.CAR.CHP
1MΩ
1/16W
VRSCY1JB105J
* R1424
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1707
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
Ref.
* R1425
AAX01780
R.CAR.CHP
100KΩ 1/16W
VRSCY1JB104J
* R1708
AAX01950
R.CAR.CHP
27KΩ
1/16W
VRSCY1JB273J
* R1426
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
* R1709
AAX02010
R.CAR.CHP
39KΩ
1/16W
VRSCY1JB393J
* R1427
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
* R1710
AAX03030
R.CAR.CHP
680KΩ 1/16W
VRSCY1JB684J
* R1428
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
* R1711
AAX03100
R.CAR.CHP
12Ω
1/10W
VRSTV2AB120J
* R1429
AAX02040
R.CAR.CHP
47KΩ
1/16W
VRSCY1JB473J
* R1712
AAX03100
R.CAR.CHP
12Ω
1/10W
VRSTV2AB120J
* R1430
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1713
AAX01780
R.CAR.CHP
100KΩ 1/16W
VRSCY1JB104J
* R1444
AAX01730
R.CAR.CHP
100Ω
1/16W
VRSCY1JB101J
* R1801
AAX01930
R.CAR.CHP
270Ω
1/16W
VRSCY1JB271J
* R1510
AAX03050
R.CAR.CHP
8.2KΩ 1/16W
VRSCY1JB822J
* R1802
AAX01920
R.CAR.CHP
220K
1/16W
VRSCY1JB224D
* R1511
AAX03050
R.CAR.CHP
8.2KΩ 1/16W
VRSCY1JB822J
* R1803
AAX01770
R.CAR.CHP
100KΩ 1/16W
VRSCY1JB104D
* R1512
AAX02030
R.CAR.CHP
47Ω
1/16W
VRSCY1JB470J
* R1804
AAX02000
R.CAR.CHP
390Ω
VRSCY1JB391J
1/16W
* R1513
AAX02030
R.CAR.CHP
47Ω
1/16W
VRSCY1JB470J
* R1805
AAX01930
R.CAR.CHP
270Ω
* R1514
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
* R1806
AAX03120
R.CAR.CHP
1Ω
* R1515
AAX01870
R.CAR.CHP
1.8KΩ 1/16W
VRSCY1JB182J
* R1807
AAX01950
R.CAR.CHP
27KΩ
* R1516
AAX01870
R.CAR.CHP
1.8KΩ 1/16W
VRSCY1JB182J
* R1808
AAX01870
R.CAR.CHP
1.8KΩ 1/16W
VRSCY1JB182J
* R1517
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1809
AAX03070
R.CAR.CHP
1Ω
1/8W
VRSTQ2BB1R0J
* R1518
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1811
AAX03070
R.CAR.CHP
1Ω
1/8W
VRSTQ2BB1R0J
* R1518
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1811
AAX03070
R.CAR.CHP
1Ω
1/8W
VRSTQ2BB1R0J
* R1519
AAX01800
R.CAR.CHP
120Ω
1/16W
VRSCY1JB121J
* XL1201
AAX01660
RSNR.CRYS
* R1520
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1521
AAX03020
R.CAR.CHP
6.8KΩ 1/16W
VRSCY1JB682J
* R1522
AAX01900
R.CAR.CHP
220Ω
VRSCY1JB221J
* R1523
AAX01710
R.CAR.CHP
0Ω
VRSCY1JB000J
* CN1901 AAX02450
CN.SOKT
5P
* R1525
AAX01980
R.CAR.CHP
3.3KΩ 1/16W
VRSCY1JB332J
* R1901
AAX03140
R.CAR.CHP
470Ω
* R1526
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
* R1902
AAX03110
R.CAR.CHP
1.8KΩ 1/10W
VRSTV2AB182J
* R1527
AAX03050
R.CAR.CHP
8.2KΩ 1/16W
VRSCY1JB822J
* R1903
AAX03160
R.CAR.CHP
820Ω
1/10W
VRSTV2AB821J
* R1528
AAX03050
R.CAR.CHP
8.2KΩ 1/16W
VRSCY1JB822J
* R1904
AAX03160
R.CAR.CHP
820Ω
1/10W
VRSTV2AB821J
* R1529
AAX03050
R.CAR.CHP
8.2KΩ 1/16W
VRSCY1JB822J
* SW1952 AAX02410
SW
QSWP0006AWZZ
* R1530
AAX01900
R.CAR.CHP
220Ω
VRSCY1JB221J
* SW1953 AAX02400
SW
QSWM0157AFZZ
1/16W
1/16W
1/16W
1/16W
1/10W
1/16W
VRSCY1JB271J
VRSTV2AB1R0J
VRSCY1JB273J
RCRSC0001AWZZ
QCNCW037EAWZZ
1/10W
VRSTV2AB471J
* R1531
AAX01900
R.CAR.CHP
220Ω
1/16W
VRSCY1JB221J
* SW1954 AAX02380
SW
QSWM0002AWZZ
* R1532
AAX01750
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102J
* SW1955 AAX02380
SW
QSWM0002AWZZ
* R1535
AAX03130
R.CAR.CHP
47Ω
1/10W
VRSTV2AB470J
* SW1956 AAX02390
SW
QSWM0156AFZZ
* R1536
AAX03090
R.CAR.CHP
0Ω
1/10W
VRSTV2AB000J
* R1537
AAX03090
R.CAR.CHP
0Ω
1/10W
VRSTV2AB000J
*
P.W.B.
* R1538
AAX03090
R.CAR.CHP
0Ω
1/10W
VRSTV2AB000J
* R1539
AAX03090
R.CAR.CHP
0Ω
1/10W
VRSTV2AB000J
* R1600
AAX02080
R.CAR.CHP
6.8KΩ 1/16W
* R1601
AAX02080
R.CAR.CHP
6.8KΩ 1/16W
VRSCY1JB682D
* R1605
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1606
AAX01760
R.CAR.CHP
10KΩ
1/16W
VRSCY1JB103J
* R1612
AAX01890
R.CAR.CHP
200KΩ 1/16W
VRSCY1JB204D
* R1614
AAX01770
R.CAR.CHP
100KΩ 1/16W
VRSCY1JB104D
* R1616
AAX03020
R.CAR.CHP
6.8KΩ 1/16W
VRSCY1JB682J
* R1617
AAX03020
R.CAR.CHP
6.8KΩ 1/16W
VRSCY1JB682J
* R1618
AAX01850
R.CAR.CHP
15KΩ
1/16W
VRSCY1JB153J
* R1620
AAX01850
R.CAR.CHP
15KΩ
1/16W
VRSCY1JB153J
* R1700
AAX02010
R.CAR.CHP
39KΩ
1/16W
VRSCY1JB393J
* R1701
AAX01960
R.CAR.CHP
30KΩ
1/16W
VRSCY1JB303J
* R1702
AAX01740
R.CAR.CHP
1KΩ
1/16W
VRSCY1JB102D
* R1703
AAX01970
R.CAR.CHP
3.3KΩ 1/16W
VRSCY1JB332D
* R1704
AAX03040
R.CAR.CHP
820Ω
1/16W
VRSCY1JB821J
* R1705
AAX02010
R.CAR.CHP
39KΩ
1/16W
VRSCY1JB393J
*
102
Schm
PART NO.
New Parts
AAX01420
VRSCY1JB682D
* New Parts
MECHANISM
QPWBF0400AWZZ
GX-900
CHIP RESISTOR
Schm
Ref. PART NO.
RD250000
RD253100
RD253220
RD253470
RD254100
RD254220
RD254330
RD254510
RD254680
RD254750
RD255100
RD255120
RD255220
RD255270
RD255330
RD255360
RD255430
RD255470
RD255510
RD255560
RD255680
RD256100
RD256120
RD256150
RD256180
RD256200
RD256220
RD256240
RD256270
RD256300
RD256330
RD256390
RD256430
RD256470
RD256510
RD256560
RD256620
RD256680
RD256820
RD256910
RD257100
RD257120
RD257150
RD257160
RD257180
RD257200
RD257220
RD257270
RD257300
RD257330
RD257390
RD257430
RD257470
* New Parts
Schm
Ref. PART NO.
Description
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
0Ω
1Ω
2.2Ω
4.7Ω
10Ω
22Ω
33Ω
51Ω
68Ω
75Ω
100Ω
120Ω
220Ω
270Ω
330Ω
360Ω
430Ω
470Ω
510Ω
560Ω
680Ω
1KΩ
1.2KΩ
1.5KΩ
1.8KΩ
2KΩ
2.2KΩ
2.4KΩ
2.7KΩ
3KΩ
3.3KΩ
3.9KΩ
4.3KΩ
4.7KΩ
5.1KΩ
5.6KΩ
6.2KΩ
6.8KΩ
8.2KΩ
9.1KΩ
10KΩ
12KΩ
15KΩ
16KΩ
18KΩ
20KΩ
22KΩ
27KΩ
30KΩ
33KΩ
39KΩ
43KΩ
47KΩ
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
RD257510
RD257560
RD257680
RD257750
RD257820
RD257910
RD258100
RD258120
RD258150
RD258180
RD258220
RD258470
RD259100
RD259220
RD259750
RD556100
RD557120
Description
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
R.CAR.CHP
51KΩ
56KΩ
68KΩ
75KΩ
82KΩ
91KΩ
100KΩ
120KΩ
150KΩ
180KΩ
220KΩ
470KΩ
1MΩ
2.2MΩ
7.5MΩ
1KΩ
12KΩ
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
1/10W
* New Parts
103
104
A
B
C
D
E
F
G
H
GX-900
■ EXPLODED VIEW
1
103
151
151
2-82
2-51
12
156
141
10-11
2-62
7
156
(5)
120
151
153
101
151
2-61
15
2-82
156
151
151
2
7
121
(6)
10-13
1-3 (1)
10-1
1-96
10-14
2-63
16
156
2-82
150
7
(1)
150
2-64
154
153
1-96
2-82
2-3
1-91
(1)
1-7
1-95
2-70
1-21
185
1-96
2-83
3
185
1-98
152
157
7
1-96
1-90
2-83
1-3 (2)
1-96
1-97
1-60
1-62
(2)
156
5
1-20
1-22
1-31
6
1-96
157
1-61
(2)
1-8
107
1-96
1-98
110
1-23
1-24
4
1-96
1-96
1-3 (3)
3-11
106
155
141
155
3-11
141
1-96
1-50
1-30
141
1-33
1-51
1-80
1-71
157
3-10
9
150
1-32
182
180
3-6
3-10
150
186
151
7
200
(3)
125
3-1
157
1-70
150
111
1-42
115
150
3-5
35
1-40
40
127
157
102
34
8
126
181
190
105
150
190
150
105
6
5
11
1-96
1-43
5
1-3 (4)
1-10
1-41
1-99
150
3-3
157
106
200-1
GX-900
■ MECHANICAL PARTS
Ref.
No.
* 1- 3
* 1- 7
1- 8
* 1-10
* 1-10
1-20
1-21
1-22
1-23
1-24
* 1-30
* 1-30
1-31
1-32
1-33
* 1-40
1-41
* 1-42
* 1-43
1-50
1-51
* 1-60
* 1-60
* 1-61
1-62
1-70
1-71
1-80
1-90
1-91
1-95
1-96
1-97
* 1-98
* 1-99
* 2- 3
2-51
2-61
2-62
2-63
2-64
2-70
2-82
2-83
3- 1
* 3- 3
* 3- 5
* 3- 6
3-10
3-11
* 5
* 5
* 6
* 6
* 7
PART NO.
V4003300
V3728300
MF125300
V3109300
V3109400
V3109600
V3110400
V3110200
V3110000
V3109700
V3223300
V3223400
V3112100
V3263300
V3188400
V3111500
V3109800
V3109900
V3111900
V3263200
VS010000
V3112500
V3112600
V3110700
V3110800
V3237100
V3269700
V3113500
V3267500
V3272000
V3112000
VD435300
VA775100
V3750600
VH554600
V4004200
VU638400
VU353900
VU354100
VU354200
VU915700
VQ861500
EP630220
VT669300
V3098100
V4004000
V3107200
V3107300
EG330030
VT669300
V4003000
V4004100
V4000300
V4000400
V4001100
Description
P.C.B. ASS’Y
BAN-CARD
FLEXIBLE FLAT CABLE C&C
FRONT PANEL
FRONT PANEL-RDS
BUTTON
BUTTON
BUTTON
BUTTON
BUTTON
LID/PANEL
LID/PANEL
SHEET
SPRING PIN
STOPPER, PIN
LID
BUTTON
BUTTON
STAY, FLAP
MINI SIDE ROCK
CUSHION, LEG
PLATE, SP
PLATE, SP-RDS
KNOB, ED
KNOB
LENS, KNOB
REFLECTOR
WINDOW, FL
SPRING
PAD, FRICTION
LENS
BIND HEAD P-TITE SCREW
PW HEAD P-TITE SCREW
SUPPORT
PW HEAD P-TITE SCREW
P.C.B. ASS’Y
CDC MECHANISM UNIT
FRAME
FRAME
FRAME
FRAME
CUSHION
PW HEAD B-TITE SCREW
MD RECORDER UNIT
P.C.B. ASS’Y
CHASSIS
FRAME/MD
BIND HEAD SCREW
P.C.B. ASS’Y
P.C.B. ASS’Y
P.C.B. ASS’Y
P.C.B. ASS’Y
P.C.B. ASS’Y
Remarks
Ref.
No.
PART NO.
Description
Remarks
8
9
10- 1
10-11
10-13
10-14
11
11
12
12
12
15
16
34
35
40
101
102
103
103
105
106
107
110
111
115
120
121
125
126
127
141
150
151
152
153
154
155
156
157
180
181
182
185
186
190
AAX07650
AAX07660
VR510800
V3621800
VV877700
EP600830
XW021A00
XW022A00
V2296800
VN363700
VV437300
V2438700
MF115300
VU590000
CB836200
VB933800
V3505700
V3104200
V3106600
V3588600
V3107000
V3107100
V3107400
V3110900
V3111300
V3110600
V2847700
V3737600
VR264400
VS009900
V3425400
VQ368600
EP600830
VN413300
VT669300
VT669400
VK865300
V2728500
VE529700
EP600130
V4096200
V4095100
V4175200
V2879500
VS936800
EP600290
CASSETTE DECK MECH. UINT
LOADING UNIT
TRANSISTOR
HEAT SINK
RADIATION SHEET
POWER TRANSFORMER
POWER TRANSFORMER
POWER CORD ASS’Y
POWER CORD ASS’Y
POWER CORD ASS’Y
CORD STOPPER
FLEXIBLE FLAT CABLE C&C
BINDING TIE
BINDING TIE
FERRITE CORE
TOP COVER
CHASSIS, MAIN
REAR PANEL
REAR PANEL
CHASSIS, CASSETTE
FRAME, TRANSFORMER
FRAME, SIDE
LID
LID
KNOB
SUPPORT, IC
SUPPORT, PWB
SPACER
LEG
WIRE CLIP
PUSH RIVET
BIND HEAD BONDING B-T. SCREW
HEX. HEAD TAP. SCREW WITH WS
BIND HEAD S-TITE SCREW
SHEET, HANGER
PAD
SHEET, REAR
SPACER PCB-M
DAMPER
F511638
F511630
Q204,218
* 200
200-1
V3192000
AAX03320
VQ147100
VR248500
ACCESSORIES
REMOTE CONTROL TRANSMITTER
LID
ANTENNA, FM
ANTENNA, AM LOOP
BATTERY, MANGANESE
Markets
OPERATION
25P 380mm
25P 300mm
*
*
Z#
*
(A)
(BG)
5P-CD
4P-CD
5P-INPUT
1P-STANDBY
5P-OPERATION
Z
Z
Z
Z
Z
(A)
(BG)
LID
SUS 2x16mm
3H-MD
1P-EJ
1P-MD
*
*
*
091Y
(A)
(BG)
D10
D10
LED
*
D6T
*
2P
2.6x8 FCRM3-BL
3x8-10 FCRM3-BL
FFC
2.6x10 FCRM3-BL
CD
YMHB310
REAR
F-L
F-R
PCB
SHEET
3x8
ZMC2-BL
3x8-8 MFC2
MDM-98A
MD
3x6
FCRM3-BL
3x8-8 MFC2
INPUT
INPUT
TUNER/TU-02
TUNER/TU-02
MAIN
*
*
*
(A)
(BG)
(A)
(BG)
* New Parts
2SD2396 J,K
Markets
48x80 TBM-51W
3x8
FCRM3-BL
(A)
(BG)
(A)
(G)
(B)
10P1
15P 300mm
CBTD001B
S-70B
BP53RB310190NOA
(BG)
(BG)
(A)
CD
CASSETTE
D32
H8
22x12.5
Y0524
P3555-B
3x8
FCRM3-BL
3x8
MFZN2-BL
3x8-8 MFC2
3x15-8 MFC2
3x18 FCRM3-BL
4x7
MFZN2-BL
3x6-8 FCRM3-BL
3x6
ZMC2-Y
SCREW
(BG)
3x5x10
3x6
ZMC2-Y
SBAN20188A SYS20
35x55BLALPS
1.4m
1.0m
SUM-3,AA,R06
* New Parts
107
108
A
B
C
D
E
GX-900
■ EXPLODED VIEW (CD Mechanism Unit)
1
■ MECHANICAL PARTS (CD Mechanism Unit)
Ref.
No.
PART NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
41
42
43
45
46
47
48
49
50
51
52
53
54
VU638400
CX679550
CX679540
CX679560
AX623770
AX623780
AX623930
CX679430
CX679440
CX679410
AX623880
AX623620
AX623900
CX679280
CX679380
CX679320
CX679310
JX601690
CX679360
CX679330
CX679340
AX623940
CX679350
CX679650
CX679640
CX679460
CX679260
EX603440
EX603430
EX603460
EX603490
EX603470
EX603450
EX603480
LX610060
MX605000
MX604960
MX605010
MX605020
CX679670
AX623920
JX601670
JX601680
CX679660
EX603600
EX603570
EX603580
EX603630
EX603640
EX603590
NX635360
CX679510
CX679270
*
2
3
4
5
6
7
* New Parts
109
110
Description
CDC MECHANISM UNIT
BRACKET, CLAMP
BRACKET, GEAR
BRACKET, TRAY
SHAFT, FRICTION-B
SHAFT, PULLEY
CHASSIS, MAIN
TRAY, SLIDE
TRAY, ROTARY
SLIDER, LIFT
FRAME, MD-B
ARM, FRICTION
PULLEY, LOAD
CAM GEAR, UP/DOWN
CLAMPER
GEAR, WORM
GEAR, IDLER
MOTOR, PULLEY (B)
GEAR, LOAD
GEAR, CENTER
GEAR, FRICTION
ROLLER, TRAY
GEAR, HELICAL
LEVER, LOCK
LEVER, BRAKE
DRIVE BELT
INSULATOR
SPRING, MD-H
SPRING, MD-G
SPRING, FRICTION
SPRING, LOCK
SPRING, BRAKE
SPRING, CAM
SPRING, LEFT
FFC
WIRE
FLAT WIRE
WIRE
WIRE
LEVER SWITCH
MAGNET
MOTOR
MOTOR
LEVER SWITCH
SCREW (F)
SCREW (B)
SCREW (C)
BIND HEAD TAPPING SCREW
SCREW (E)
TRAVERSE UNIT
FELT, FRICTION
NEW COVER
Remarks
YMHB310
16P
6P
6P
6P
3P
SSCF
RF-500TB-12560
MNN-6F1LBOK
JPS1220-0201
2x12
2.6x8
KSM-213BCM
YMHB310
C3B1007
C3D1002
C3D1003
C3D8014
C3D2002
C3A3001
C3A3002
C3A3003
C3B3024
C3B3023
C3C3006
C3C3010
C3C3014
C3C3020
C3D3007
C3D3008
PD3039
C3D3011
C3D3012
C3D3013
C3D3015
C3D3017
C3D3018
C3D3029
C3D4001
C3D4003
C3D6012
C3D6011
C3D6003
C3D6005
C3D6006
C3D6007
C3D6013
C3D9017
C3D9019
C3D9018
C3D9020
C3D9021
S332061
T990544
91300130
91433136
94437095
C3D8010
C3D8004
C3D8005
8114512012
8114512608
C3D8009
90438002
C3D8001
C3D8019
Markets
A
B
C
D
E
GX-900
1
Ref.
No.
PART NO.
55
57
58
65
66
67
EX603810
CX679400
EX603620
JX601720
JX601700
AX623870
Description
WASHER
SHEET, TRAY-B
MOTOR ASS’Y, PULLEY
MOTOR ASS’Y, WORM
FRICTION ARM ASS’Y
Remarks
2x8
■ EXPLODED VIEW (Traverse Unit)
Note : The parts marked with an asterisk (*) are not available separately.
They are included in a Traverse Unit and supplied as that unit.
Markets
C3D8018
C3D8015
8114512008
C3D9008
C3D9007
C3D3022
y
2
r
!0
t
3
e
q
4
w
u
o
i
5
6
7
Ref.
No.
PART NO.
1
2
3
4
5
6
7
8
9
10
NX635360
NX635420
CX679710
PX601970
AX623980
CX679720
EA020036
KX604660
NX613040
LX610120
CX680030
Description
TRAVERSE UNIT
MOTOR CHASSIS ASS'Y
MOTOR GEAR ASS'Y
OPTICAL DEVICE
SLED SHAFT
GEAR, A
PAN HEAD SCREW
LEAF SWITCH
PWB, MOTOR
CONNECTOR PIN
GEAR
Remarks
KSM-213BCM
(MB)
KSS-213B(RP)
(S)
2x3
6P(S)
6P
ZMC2-Y
Markets
90438002
X26258771
X26257691
884836711
262690801
262690701
762125515
157208511
163967813
156472211
262700301
* New Parts
* New Parts
111
112
A
B
C
D
E
F
G
H
GX-900
■ EXPLODED VIEW (Loading Unit)
■ EXPLODED VIEW (Cassette Deck Mech. Unit)
1
2
3
4
*
*
*
*
*
*
*
*
*
*
5
*
*
*
*
*
Ref.
No.
PART NO.
3
4
5-1
6-1
15
AAX07660
AAX07480
AAX07460
AAX07510
AAX07520
AAX07580
Description
LOADING UNIT
HOLDER CST BLOCK
MTR REEL BLOCK
SWITCH
SWITCH
BELT
Remarks
LOADING
Markets
F511630
F527078
F564313
UE15S14
UE18P21
FF19L12
* New Parts
113
6
Ref.
No.
PART NO.
3
4
5
6
25
29
31
32
42
50
51
52
53
54
55
AAX07650
AAX07550
AAX07450
AAX07470
AAX07490
AAX07570
AAX07500
AAX07530
AAX07540
AAX07560
AX623570
AX622210
CX677140
CX677130
AX623590
CX679800
* New Parts
114
Description
CASSETTE DECK MECH. UINT
PLATE HD BLOCK
MTR MAIN BLOCK
PCB CONTROL BLOCK
CLUTCH ASS’Y BLOCK
BELT
CLUTCH ASS’Y BLOCK
ROLLER PINCH BLOCK
ROLLER PINCH BLOCK
BELT
HEAD BASE
PLATE, SLIDE
CAM, GEAR
LEVER
LOCK LEVER
PULLEY, CLUTCH
Remarks
MAIN
R
L
F/R
F/R
F511638
F513831
F525327
F567626
F522037
FF19H11
F522048
F514129
F514130
FF18W12
FC61K28
FC61L17
FD52Y20
FC62G12
FD53D19
FD53F14
Markets
A
1
B
C
D
E
■ EXPLODED VIEW (MD Recorder Unit)
GX-900
■ MECHANICAL PARTS (MD Recorder Unit)
607
39
Ref.
No.
PART NO.
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Z*
*
*
*
*
*
*
1
2
3
4
5
6
6-1
6-2
7
7-1
7-2
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
V3098100
AAX02240
AAX02250
AAX02930
AAX02270
AAX02280
AAX02130
AAX02120
AAX01510
AAX01480
AAX01460
AAX01440
AAX01600
AAX02310
AAX02290
AAX02440
AAX01590
AAX02430
AAX02370
AAX01470
AAX02300
AAX01680
AAX02950
AAX01500
AAX01570
AAX01540
AAX02920
AAX01530
AAX01560
AAX01490
AAX01580
AAX02910
AAX02940
AAX01520
AAX01310
AAX01320
AAX01640
AAX01630
AAX01450
AAX01650
AAX01670
AAX01700
AAX01690
AAX01430
MD RECORDER UNIT
MD GUIDE
MD GUIDE
DRIVE CHASSIS
CARTRIDGE HOLDER
CAM PLATE LEVER
SHIFT ARM ASSY
SHIFT ARM
SHEET, LEAD PROTECTION
HOLDER ARM ASSY
HOLDER ARM
SHEET, HEAD PROTECTION
ROLLER ARM LEVER
CLUTCH LEVER
CATCH
SLIDER LEVER
SPRING, ROLLER HOLDER
SPRING, SPIN
SPRING, SHIFT ARM
SPRING, HOLDER ARM
SPRING, CATCH
SPRING, LEAF
SPRING, DRIVE SHAFT
SPRING, RACK
SPRING, ROLLER
LOADING GEAR
DRIVE GEAR
LOADING GEAR
ROLLER GEAR
RACK GEAR
ROLLER HOLDER
TRANSFER ROLLER
DRIVING SHAFT
LOADING GEAR SHAFT
PICKUP SLIDE SHAFT
PICKUP GUIDE SHAFT
MAGNETIC HEAD
OPTICAL PICKUP
BASE FRAME
UPPER COVER
BOTTOM COVER
RUBBER, UNTI-VIBRATION
RUBBER, UNTI-VIBRATION
CUSHION, HEAD
*
*
*
*
*
*
*
*
601
602
603
604
605
606
607
608
AAX02960
AAX02970
AAX02980
AAX03000
AAX03010
AAX01260
AAX01280
AAX01610
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW
WASHER
35
612
15
7-2
7-1
11
7
9
2
612
4
10
16
608
CW1903
607
26
3
27
B1
32
608
12
B2
A1
33
24
34
8
30
A
21
20
A2
17
609
38x2
601
601
22
609
604
4
37x2
18
28
25
601
611x2
SW1956
19
601
611x2
605
PWB-A
CNW2002
1
PWB-B
5
SW
1952
SW1955
CW1901
5
603x2
SW1953
SW1954
14
29
✱13
603x2
23
613x4
602
6-1
31
6-2
6
602
3
A1
B2
A
6
612
A2 B1
2
M902
M903
M901
✱
612
36
610
7
606x2
✱ When replacing the motor (M901), be sure to replace the spin spring (13) at the same time (because
its shape may vary).
Description
Remarks
A
B
HA
HA
A
B
A
A
B
M1.7x9.5
M1.7x7.5
M1.7x2
M1.4x2.2
M1.7x3
M1.7x2.5
M1.7x5
1.5x3.2x0.5
Markets
V3098100
LANGF0033AWZZ
LANGF0034AWZZ
LCHSM0080AWM1
LHLDX3004AWM1
MLEVF0036AWM1
MLEVF0025AWM1
MLEVF0025AWZZ
PSHEP0026AWZZ
MLEVF0037AWM2
MLEVF0037AWM1
PSHEP0024AWZZ
MLEVF0030AWM1
MLEVP0075AWZZ
MLEVP0076AWZZ
MLEVP0077AWZZ
MSPRD0103AWFJ
MSPRD0105AWFJ
MSPRD1318AFFJ
MSPRD1319AFFJ
MSPRD1334AFFJ
MSPRP0015AWFJ
MSPRP0017AWFJ
MSPRT0018AWFJ
MSPRT1566AFFJ
NGERH0066AWZZ
NGERH0067AWZZ
NGERH0068AWZZ
NGERH0084AWZZ
NGERR0002AWZZ
NROLP0010AWZZ
NROLR0001AWZZ
NSFTD0005AWFT
NSFTM0017AWFW
MSFTM0277AFFW
NSFTM0278AFFW
RCILH0108AFZZ
RCTRH8190AFZZ
LANGK0092AWFW
PCOVS3021AWFW
PCOVS3022AWFW
PCUSG0672AFSA
PCUSG0672AFSB
PCUSS0041AWZZ
LXBZ0030AWZZ
LXBZ0031AWZZ
LXBZ0032AWZZ
LXBZ0804AFFF
LXBZ0846AFZZ
LXBZ0851AFZZ
LXBZ0883AFZZ
LXWZ9268AFZZ
* New Parts
115
116
A
GX-900
1
*
*
*
*
*
Ref.
No.
PART NO.
609
610
611
612
613
AAX01620
AAX02990
AAX01270
AAX01290
AAX01300
Description
WASHER
SCREW
SCREW
SCREW
SCREW
* CNW2002 AAX02110 MD FLAT CABLE
* M901
* M902
* M903
AAX02420 MOTOR, SPINDLE
AAX01330 MOTOR, FEED
AAX01550 MOTOR, LOAD
Remarks
1.2x3x0.2
M1.7x2.1
M1.7x8.9
M2x4
M1.7x3
LXWZ9269AFZZ
LXBZ0036AWZZ
LXBZ0852AFFD
XBPSD20P04K00
XSPSN17P03K00
28P
QCNWN6763AFM1
B
C
D
GREASE APPLICATION DIAGRAM
(MD Recorder)
Markets
2
RMOTV0012AWZZ
RMOTV0013AWM2
RMOTV0014AWM1
3
G
GB
4
GB
G
OL
G
GB
GB
GB
5
GB
G
G
GB
6
G
G
Grease
G
: Molykote PG664
GB : Molykote BR2PLUS
OL : HYDRO-FLUTE EP-68
7
* New Parts
117
118
E
A
B
C
D
E
F
G
H
GX-900
1
GREASE APPLICATION DIAGRAM (CD Mechanism)
●
Grease to be supplied
The same grease as that originally used is not
available but a substitutive grease is supplied instead. When using this grease, however, make sure
to wipe off the attached grease thoroughly before
applying the new one.
Grease originally used
Grease to be supplied
EM50L
FLOIL G-351
P/NO. TX913160
Molykote 6166
FLOIL G-351
P/NO. TX913160
MX-2400
FLOIL G-351
P/NO. TX913160
2
3
4
5
119
6
120
A
B
C
D
E
F
G
H
GX-900
■ NX-GX500 EXPLODED VIEW
REMOTE CONTROL TRANSMITTER
1
■ SCHEMATIC DIAGRAM
12
2
3
4
2
Q1
5
6
7
8
C1
R1
2.2Ω 47µF
9
X1
3(V)
10
3.64MHz
KI/O5
KI/O6
KI/O4
KI/O7
KI/O3
S0
S1/LED
REM
VDD
X OUT
IC1:µPD64GS–470
1
IED1
KI/O2
KI/O1
KI/O0
KI3
X IN
KI2
VSS
KI1
RESET
KI0
20
K1
K2
K3
K4
K33
K34
K35
K36
K5
K6
K7
K8
K37
K38
K39
K40
K9
K10
K12
K41
K42
K13
K14
K16
K45
K46
4
12
19
18
K15
3
13
17
K49
16
K51
K52
K56
15
K21
K22
K23
K25
K26
K27
K29
K30
K53
K54
K55
K57
K58
K59
14
13
K28
2
12
9
11
8
K32
J2
D1
D2
D3
1
13
D4
5
3
2-4
9
12
2-3
12
4
1
1
2
2
3
3
ABC
6
DEF
7
GHI
8
6
PQR
7
STU
8
VWX
4
4
5
5
JKL
MNO
PRESET
9
YZ
0
/
A
B
C
D
E
TIME
PROG
R. TIME
EDIT
+I0
MODE
REPEAT
RANDOM
SPACE
TUNER
DISC SKIP
CD
TAPE
REC/PAUSE
INPUT MODE
M–MARK
SCROLL
DIRECTION
MD
REC/PAUSE
YMERSION
POWER
/I
5
SYS20
SLEEP
INPUT
DELETE
MD EDIT
ENTER
BASS BOOST
MUSIC
VOLUME
Key
No.
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
21
22
23
25
26
27
28
29
30
FUNCTION
2
2
3
3
4
4
5
5
PROG (CD)
B
R. TIME (CD) C
EDIT (CD)
D
+10
E
REPEAT (CD)
RANDOM (CD)
TUNER
T E (CD)
Y R (CD)
A (CD)
L (CD)
INPUT MODE (MD)
M–MARK (MD)
SCROLL
(MD)
DIRECTION (TAPE) MD EDIT
MUSIC
VOLUME ,
/ I POWER
SLEEP
INPUT N
CUSTOM DATA
(HEX)
(HEX)
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
12
13
14
15
0B
08
09
1A
0C
07
4B
04
03
01
02
D5
D6
D7
D8
5A
1E
0F
4F
40
Key
No.
32
33
34
35
36
37
38
39
40
41
42
45
46
49
51
52
53
54
55
56
57
58
59
FUNCTION
VOLUME .
: REC/PAUSE
(TAPE)
E
(TAPE)
R
(TAPE)
A
(TAPE)
W
(TAPE)
K REC/PAUSE (MD)
T E
(MD)
Y R
(MD)
A
(MD)
L ENTER
(MD)
YMERSION
BASE BOOST
INPUT B
1
1
6
6
7
7
8
8
9
NPRESET
0
BPRESET
TIME (CD)
A
MODE
DISC SKIP
CUSTOM DATA
(HEX)
(HEX)
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
78
1F
46
45
44
41
42
D4
D3
D2
D0
D1
5B
85
5E
11
16
17
18
19
10
0A
5D
0D
*
*
*
*
*
*
*
*
*
*
Ref.
No.
PART NO.
1
1
2
2
2-3
2-4
3
4
5
8
9
12
13
V3592800
V3592900
V3593000
V3593100
V2192200
VP161000
V3594000
XV819A00
XV821A00
V3490500
V3594600
EP030580
EP040250
SPEAKER CABINET
SPEAKER CABINET
FRONT GRILLE ASS’Y
FRONT GRILLE ASS’Y
EMBLEM
PUSH NUT
SPEAKER TERMINAL
LOUD SPEAKER JA05U1
LOUD SPEAKER JA13590
FRONT PANEL
CATCHER
BINDING HEAD TAPPING SCREW
V3593700
ACCESSORIES
SPEAKER CORD ASS’Y
* New Parts
121
6
122
Description
Remarks
CH
BL
CH
BL
YAMAHA
SPN1.5
213-S5305
5cm
13cm
3.5x20 MFZN2-BL
4x16 ZMC2-BL
Markets
GX-900
Parts List for Carbon Resistors
1/4W Type Part No. 1/6W Type Part No.
HJ35 3100
HF85 3100
❊
HJ35 3180
HJ35 3220
HF85 3220
HJ35 3330
HF85 3330
HJ35 3470
HF85 3470
HJ35 3560
HF85 3560
HF45 4100
HF45 4100
HJ35 4150
HF85 4150
HF45 4220
HF45 4220
HJ35 4270
HF85 4270
HF45 4330
HF45 4330
HJ35 4470
HF85 4390
HF45 4470
HF45 4470
HF45 4560
HF45 4560
HF45 4680
HF45 4680
HF45 4750
HF45 4750
HF45 4820
HF45 4820
HF45 4910
HF45 4910
HF45 5100
HF45 5100
HJ35 5110
HF85 5110
HF45 5120
HF45 5120
HF45 5150
HF45 5150
❊
HJ35 5160
HF45 5180
HF45 5180
HF45 5200
HF45 5200
HF45 5220
HF45 5220
HF45 5270
HF45 5270
HF45 5330
HF45 5330
HF45 5390
HF45 5390
HF45 5430
HF45 5430
HF45 5470
HF45 5470
HF45 5510
HF45 5510
HF45 5560
HF45 5560
HF45 5680
HF45 5680
HF45 5820
HF45 5820
HF45 5910
HF45 5910
HF45 6100
HF45 6100
HF45 6120
HF45 6120
HF45 6150
HF45 6150
HF45 6180
HF45 6180
HJ35 6200
HF85 6200
HF45 6220
HF45 6220
HJ35 6240
HF85 6240
HF45 6270
HF45 6270
HF45 6300
HF45 6300
HF45 6330
HF45 6330
HJ35 6360
HF85 6360
HF45 6390
HF45 6390
HF45 6470
HF45 6470
HF45 6510
HF45 6510
HF45 6560
HF45 6560
HF45 6680
HF45 6680
HF45 6820
HF45 6820
HF45 6910
HF45 6910
Value
10 kΩ
11 kΩ
12 kΩ
13 kΩ
15 kΩ
18 kΩ
22 kΩ
24 kΩ
27 kΩ
30 kΩ
33 kΩ
36 kΩ
39 kΩ
47 kΩ
51 kΩ
56 kΩ
62 kΩ
68 kΩ
82 kΩ
91 kΩ
100 kΩ
110 kΩ
120 kΩ
150 kΩ
180 kΩ
220 kΩ
270 kΩ
300 kΩ
330 kΩ
390 kΩ
470 kΩ
560 kΩ
680 kΩ
820 kΩ
1.0 MΩ
1.2 MΩ
1.5 MΩ
1.8 MΩ
2.2 MΩ
3.3 MΩ
3.9 MΩ
4.7 MΩ
1/4W Type Part No. 1/6W Type Part No.
HF45 7100
HF45 7100
HF45 7110
HF45 7110
HF85 7120
HJ35 7120
HF45 7130
HF45 7130
HF45 7150
HF45 7150
HF45 7180
HF45 7180
HF45 7220
HF45 7220
HF45 7240
HF45 7240
HF85 7270
HJ35 7270
HF45 7300
HF45 7300
HF45 7330
HF45 7330
HF45 7360
HF45 7360
HF45 7390
HF45 7390
HF45 7470
HF45 7470
HF45 7510
HF45 7510
HF45 7560
HF45 7560
HF45 7620
HF45 7620
HF45 7680
HF45 7680
HF45 7820
HF45 7820
HF45 7910
HF45 7910
HF45 8100
HF45 8100
HF45 8110
HF45 8110
HF45 8120
HF45 8120
HF45 8150
HF45 8150
HF45 8180
HF45 8180
HF85 8220
HJ35 8220
HF45 8270
HF45 8270
HF45 8300
HF45 8300
HF45 8330
HF45 8330
HF85 8390
HJ35 8390
HF45 8470
HF45 8470
HF85 8560
HJ35 8560
HF85 8680
HJ35 8680
HF85 8820
HJ35 8820
HF45 9100
HF45 9100
❊
HJ35 9120
HF85 9150
HJ35 9150
HF85 9180
HJ35 9180
HF85 9220
HJ35 9220
HF85 9330
HJ35 9330
❊
HJ35 9390
HF85 9470
HJ35 9470
GX-900
Value
1.0 Ω
1.8 Ω
2.2 Ω
3.3 Ω
4.7 Ω
5.6 Ω
10 Ω
15 Ω
22 Ω
27 Ω
33 Ω
39 Ω
47 Ω
56 Ω
68 Ω
75 Ω
82 Ω
91 Ω
100 Ω
110 Ω
120 Ω
150 Ω
160 Ω
180 Ω
200 Ω
220 Ω
270 Ω
330 Ω
390 Ω
430 Ω
470 Ω
510 Ω
560 Ω
680 Ω
820 Ω
910 Ω
1.0 kΩ
1.2 kΩ
1.5 kΩ
1.8 kΩ
2.0 kΩ
2.2 kΩ
2.4 kΩ
2.7 kΩ
3.0 kΩ
3.3 kΩ
3.6 kΩ
3.9 kΩ
4.7 kΩ
5.1 kΩ
5.6 kΩ
6.8 kΩ
8.2 kΩ
9.1 kΩ
1/4W Type
HF45
1/4W Type
HJ35
1/6W Type
HF85
10mm
5mm
1992
123
GX-900
GX-900

service manual gx-900 mini component system

Transcription

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