SL-12 OM K2 (M),(MC)

Service Manual
ORDER NO . SD7908-1601
Turntable System
SL-12 OM K2
(M), (MC)
A WARNING
experienced repair technicians
This service literature is designed for
the general public . It does not
for
use
by
designed
and
is
not
only
non-technical individuals of
contain warnings or cau:'.ons to advise
. Products powered
a
potential dangers in attempting to service product
repaired only by experienced
or
be
serviced
should
by electricity
or repair the product
professional technicians. C.iy attempt to service
t;+ anyone else could
or,,products dealt with in this service literature
rest'' in.. serious injury or death .
" The model SL-11 200MK2 (M) is available in U .S .A . only .
*The model SL-1200MK2 (MC) is available in Canada only .
SPECIFICATIONS
General
Power supply :
Power consumption :
Dimensions :
(WxHxD)
Weight :
Turntable section
Type :
Drive method :
Motor :
Turntable platter:
Turntable speeds :
Pitch control :
;:carting torque :
Build-up
characteristics :
Braking system :
Speed change due to
load torque :
Wow and flutter :
Specifications subject to change without notice . Weight and dimensions shown are approximate .
120 V,AC,50or60Hz
12W
45 .3x 16 .2 x36 cm
(17-27/32"x6-19/64"x l 4-11/64")
11 kg (24 .3 lb)
Quartz direct drive
Manual turntable
Direct drive
Brushless DC motor
Aluminum diecast
Diameter 33 .2 cm (13-5/64")
Weight 2 kg (4 .4 lb .)
33-1/3 rpm and 45 rpm
All quartz-locked ±8% range
1 .5 kg-cm (1 .3 Ib-in)
0 .7 s . from standstill to 33-1/3 rpm
Electronic brake
0% within 1 .0 kg-cm (0 .87 Ib-in)
0 .01% WRMS*
0 .025% WRMS (JIS C5521)
±0 .035% peak (IEC 98A Weighted)
* This rating refers to turntable assembly alone, excluding
effects of record, cartridge or tonarm, but including
platter . Measured by obtaining signal from built-in frequency generator of motor assembly .
Rumble :
-56 dB (I EC 98A Unweighted)
-78 dB (IEC 98A Weighted)
Tonearm section
Type :
Effective length :
Arm height adjustment
range :
Overhang :
Effective mass :
Offset angle :
Friction :
Tracking error angle :
Stylus pressure
adjustment range :
Applicable cartridge
weight range :
(with auxiliary
weight) :
(with shell weight) :
Headshell weight :
Universal
230mm (9-1/16")
31 .8-37 .8 mm (helicoid part 6 mm)
(1-21 /32"-3-35/64")
(helicoid part 15/64")
15 mm (19/32")
12 g (without cartridge)
22°
Less than 7 mg (lateral, vertical)
Within 2 ° 32' (at the outer groove of
30 cm (12") record
Within 0 ° 32' (at the inner groove of
30 cm (12") record
0-2 .5 g
6-10 g
13 .5-17 .5 g (including headshell)
9 .5-13 g
17-20 .5 g (including headshell)
3 .5-6 .5 g
11-14 g (including headshell)
7 .5 g
Cud Matsushita Electric Industrial Co . Ltd.
All rights reserved . Unauthenzed
copying and distribution is a violation of law
Panasonic Company
Panasonic Hawaii, Inc .
Division of Matsushita Electric
320 Waiakamilo Road, Honolulu,
Corporation of America
.Hawaii 96817
One Panasonic Way, Secaucus,
New Jersey 07094
Matsushita Electric of Canada Ltd .
5770 Ambler Drive,
Mississauga, Ontario
LAW 2T3
SL-1200MK2
CONTENTS
DISASSEMBLY PROCEDURE . . . . . . . . .
PARTS IDENTIFICATIONS . . . . . . . . . . .
ARM BASE ASSEMBLING PROCEDURE.
FEATURES . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . .
SCHEMATIC DIAGRAM . . . . . . .
. .
REPLACEMENT PARTS LIST (Electrical)
.. .
TROUBLE SHOOTING . . . . . . . . . . . . . .
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. 2,3
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4
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. 7,8
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9
. 10
DISASSEMBLY PROCEDURE
How to remove panel cover
1 . Remove head shell and turntable.
2 . Secure arm with arm clamp .
3 . Remove 5 screws O of the panel cover as shown in
Fig. 1 .
How to remove stater frame coil and F.G detector
coil
4 . Remove 3 connectors O and 2 read wires @ from
power transformer as shown in Fig. 2.
5 . Remove 3 screws @ of the drive circuit board and 3
screws © of the stater frame cover as shown in Fig. 2.
6 . Disconnect 18 soldered parts O of the stater coil and
4 soldered parts O of the F.G detector coil as show in
Fig. 3.
7 . Remove 3 screws Q of the stater frame ass'y as shown
in Fig. 3.
How to remove bottom base ass'y
8. Remove 4 audio insulators . (Counterclockwise rotation)
9. Remove 17 screws and spacer Q as show in Fig. 4.
10 . Remove 11 screws O as shown in Fig. 4.
How to remove stylus-illuminator lamp
11 . Remove 2 screws Q of the stylus-illuminator lamp
ass'y as shown in Fig . 5.
12 . Remove 1 screw O as shown in Fig. 6.
How to remove neon-illuminator L .E .D .
13 . Remov e 4 screws Q as shown in Fig. 5.
14 . Remove 1 circlip Q and switch cam QQ as shown in
Fig. 5.
15 . Remove strobo-illuminator case .
How to remove tone arm
16 . Remove 4 screws Q of the arm base cover as shown in
Fig . 5.
17 . Remove 2 screws © of the phono cord clamper as
shown in Fig. 5 .
18 . Remove phono cord clamper as shown in Fig. 7.
19 . Remove 2 screws Q of the phono cord p.c .b . as shown
in Fig . 8.
20 . Remove 2 screws © as shown in Fig . 8.
21 . Remove 2 screws Q of the silicon oil dumper as shown
in Fig. 8 .
22 . Remove 3 screws Q as shown in Fig. 8 .
23 . Remove 2 screws 0 of the tone arm as shown in
Fig. 9.
PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . . . . . .
ADJUSTMENT (Electrical) . . . . . . . . . . . . . . . . . . . . . . .
REFERENCE VOLTAGE AND WAVEFORM AT EACH
PIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EXPLODED VIEWS. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REPLACEMENT PARTS LIST (Mechanical) . . . . . . . . . .
EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. .
.. .
IC
.. .
.. .
.. .
.. .
.. .
11,12
13
13,14
15,16
17,18
19
20
Lamp caset
Fig . 9
Fig .
m PARTS IDENTIFICATION
Hinge
Arm-height adjustment ring
Balance weight
Power switch
Strobe-illuminator/
pilot lamp
Speed select buttons
Fig . 10
10
. ARM BASE ASSEMBLING PROCEDURE
1 . Attach the control ring to the arm base seat . (The
control ring should be roated counterclockwise .)
2 . Completely tighten the control ring, and then loosen it
1 .5---2 .5 turns to set the scale to "3" . (See Fig . 11)
5 . Rotate the control ring and make sure that the arm base
shifts within the range of 0-6mm . (See Figs . 14 and 15)
If it does not shift within the specified range, the arm
base position is deflected . In that case, disassemble the
parts and check as specified in step 3 .
3 . Hold the arm base and set the red line mark on the arm
base to the scale near "2", then turn the arm base
clockwise . (See Fig . 12)
Note :
Take care not to allow deflection of the predetermined
positions of the control ring and arm base seat .
® ADJUST ENT OF CANCELLER
SPRING POSITION
Fig . 12
4 . Adjust the arm base so that the red line mark on the arm
base is set to the scale "3" of the control ring . Next,
secure the positioning base plate with two setscrews .
(See Fig . 13)
4
If the arm body or PU base plate is replaced, be sure to set
the canceller knob to "0 .5" and make sure that the canceller spring is in contact with the arm shaft . (See Fig . 16)
if the canceller spring is deflected, adjust it as follows :
1 . Clamp the arm on the rest .
2 . Set the canceller knob to "0 .5" .
3 . Remove the PU base plate, adjust gear Q so that the
canceller spring is in the position of Fig . 16 .
4 . Mount the PU base plate onto the arm base and cit~ck
the spring position .
SL-1200MK2
FEATURES
Total quartz locked continuous pitch adjustment
f8%
Quartz-phase-locked control means almost perfect accuracy
of turntable rotation .
But with most quartz turntables, this accurate control
circuit must be cut out when the pitch control is employed .
With the SL-1200MK2, however, pitch is variable continuously (analogically) by up to ±8% under total quartzlocked control . The pitch is controlled with a large sliding
lever, located to the right of the turntable platter .
Four lines of platter markings are also provided indicating
+6%, +3 .3%, 0% (exact rated speed) and -3 .3% change
from rated speed .
Aluminum diecast cabinet and special heavy rubber
base material provide acoustic isolation
The effects of external vibrations are dramatically reduced
in the turntable by this new turntable construction .
The turntable base is precision-made aluminum diecast.
And the underside of the main base is made of a heavy
rubber material (special one-piece molding) which has
excellent vibration resistance and absorbing characteristics .
The turntable platter is also vibration-damped with specially fabricat rubber matting in the underside along with the
thick turntable sheet (rubber mat) . Four large-size insulating
feet also help to absorb unwanted vibrations .
These features make SL-11 200MK2 ideal for use with extrahigh sound pressure levels .
High torque for fast starts
The integral rotor/platter motor delivers 1 .5kg-cm (1 .3lb-in)
starting torque . This high torque gives very quick starts
enabling the platter to reach 33-1/3 rpm within 0 .7 s. (a
quarter of a turn) . This is a big advantage in many professional applications where fast cueing is a necessity.
Stylus illuminator for low-light conditions
You'll appreciate the stylus illuminator when you are using
the turntable under low-light conditions . The illuminator
can be hidden in the turntable base, should you need it,
simply push a button and it will pop up gently and cast a
beam of light across the disc in the area traversed by the
tonearm .
You can then clearly see the spaces between the selections
on the record, and cue the arm exactly where you want it .
The illuminator can then be pushed back down into the
base .
High sensitivity, low mass, gimbal suspension
tonearm
The highly sensitive tonearm features a genuine gimbal
suspension, the rotational center of which is precisely
defined at one point. Bearings are finished to a tolerance of
±0 .5 microns. This and the extra-closeness of pivot center
to the bearings, result in the minimal friction of 7 mg
(0 .007 g) for both horizontal and vertical movement . Add
to this the low 12-gram effective tonearm mass (including
headshell, without cartridge) and you have a tonearm compatible with the wide range of compliances found in today's
cartridges . If you choose a popular high compliance MM
cartridge, the low range resonance frequency will appear in
the correct area to avoid warp frequencies of records, but
without entering the low end of the audio spectrum . This
tonearm is provided with a computer designed, light-weight,
high-rigidity headshell made of single-piece diecast aluminum
to resist partial vibration. The universal design allows headshell interchangeability . Contacts are gold-plated .
Helicoid tonearm height adjustment
Arm height is adjustable within a range of 6 mm to accommodate varying cartridge dimensions . Adjustments are done
with a precision-made helicoid .
Other fine features
" Quick stops are achieved with a fully electronic braking
system .
" A strobe illuminator is provided . The stroboscope is controlled by the extremely stable quartz oscillator, rather
than potentially unstable AC line frequency.
Power on/off control built-into strobe illuminator for
ease-of-operation .
Soft-touch start-stop switch allowing precision control
capability without the annoyance of accidental operation.
" Technics integral rotor/platter motor construction with
full cycle detection FG .
)MK2
lections
want it .
nto the
~ension
gimbal
recisely
- ance of
t center
f7 mg
nt . Add
icluding
m comtoday's
ice MM
)pear in
As, but
m . This
weight,
iminum
vs head-
accomre done
braking
is con, rather
itor for
control
eration .
)n with
: ig . 17
SL-1200MK2
ADJUSTMENTS
Pitch control (fine adjustment of speed) (See Figs .
18 and 19 .)
When the pitch control knob is located at the center of the
position after turning on the power, the green LED indicator
is lit showing the operating condition for the predetermined
speed (either 33-1/3 or 45 rpm) . The pitch control is variable
in a range of 0-±8% .
Adjustment should be done on the basis of indicator scale .
Figures on the indicator show approximate percentages for
variable pitch control .
When the strobe dots in 4 stages marked at the peripheral
edge of the turntable appear to be stationary, variation of
individual pitches is shown . (See Fig . 19 .)
Note :
The strobe-illumination of this unit employs a strobe-illuminator LED synchronized with the precise quartz frequency .
For fine adjustment of the turntable speed, be sure to
effect the adjustment according to the LED illumination .
The LED illumination is not synchronized with fluorescent
lamps .
Adjustment of arm-lift height (See Figs . 20 and 21 .)
The arm-lift height (distance between the stylus tip and
record surface when cueing lever is raised) has been
adjusted at the factory before shipping to approximately
8-13mm .
If the clearance becomes too narrow or too wide, turn the
adjustment screw clockwise or counterclockwise, while
pushing the arm lift down .
Clockwise rotation
-distance between the record and stylus tip is decreased .
Counterclockwise rotation
-distance between the record and stylus tip is increased .
Note :
As the adjusting screw has hexagonal head, be sure to make
the adjustment while depressing the arm lift, or the screw
will not move freely .
Also be sure that the hexagonal head retracts correctly into
the arm lift when the latter is released .
(t)
appears stahonary at the pitch
(2) appears slat,
stahonary at the pitch
onary at the pitch
f3f appears
(4) appears stahonary at the pitch
of ,611,
of " 3.3%
o ;11
o3 3%
Fig . 19
Adjustment of the tonearm height (See Fig . 22 .)
The height of the tonearm can be adjusted up to 6 mm, and
a scale is provided on the adjust ring in 0 .5 mm increments .
Be sure to set the proper arm height using the adjust ring
scale and referring to the table .
Height of cartridge (mm)
(H)
15
16
17
18
19
20
21
Scale reading on the arm-height
adjust ring
0
1
2
3
4
5
For example, if the cartridge height is 17 .5 mm, the armheight adjust ring should be positioned at the intermediate
location between 2 and 3 on the scale . (See Fig . 22 .)
Caution :
Be sure to lock the tonearm by turning the arm lock knob
in the direction indicated by the arrow after finishing the
height adjustment for the tonearm .
Lubrication (See Fig . 23 .)
Apply 2 or 3 drops of oil once after every 2000 hours'of
operation .
The time interval is much longer than that for conventional
type motors (200-500 hours) .
Please purchase original oil . (Part number is SFWO 010 .)
Schematic Diagram
2
(This schematic diagram maybe modified at anytime with the development of
3
6
5
4
7
D1
SVDSl RBA20
A
C
Q
POWER SWITCH
~pnai
{YtiO--~ iF
R601
r1
4.7
350 MA
B
120.6
ORG T .I
J
Q3
AC 117V (50/60Hz)
C
R5 4
BLU °}
TP4
'
D2
SVORD5.1E
C
R204
D
Braking
2.
TP21
adjustment
R205
VR201
50KB
TP22
R215 4 .7K
R214
22K
IC201
A N 6680
E
F
Adjustment of
pitch control
±0%(Pitch)
TF
Q202
Pitch Adjustment
(GAIN)
D204
G
MA150
VR303
PITCH LOCK SWITCH
PITCH CONTROL VOLUME
H
5203
S/S
D201, 202
5201
33
1 5202
SVDSR105C
45
SPEED SELECTOR SWITCH
STR(
IMPORTANT SAFETY NOTICE
THE SHADED AREA ON THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR
SAFETY .
WHEN SERVICING IT IS ESSENTIAL THAT ONLY MANUFACTURER SPECIFIED PARTS BE USED FOR THE CRITICAL
COMPONENTS IN THE SHADED AREAS OF THE SCHEMATIC.
u
,development of new technology .)
7
9
8
~
10
fP3
220
P19
OVI
.213
Ilop
i
WITCH
D206
5401
D204
D205
PLl
STYLUS-ILLUMINATOR
STROBE ILLUMINATOR
NOTO :
1 . S201 : Speed selector switch (33-1/3 r.p .m .) in
"ON" position . (push condition)
2 . S202 : Speed selector switch (45 r .p .m .) in "OFF"
position . (not-push condition)
3 . S203 : Start/Stop switch in "OFF" position . (notpush condition)
4 . S301 : Pitch lock switch in "ON" position . (center
position)
5 . S401 : Stylus-illuminator switch in "OFF" position .
6 . S601 : Power switch in "ON" position .
7 . The drive circuit IC voltage and wave form are not
indicated in side the schematic diagram .
8 . Indicated voltage values are the standard values for
the unit measured by DC electronic circuit tester
(high impedance) with the chassis taken as
standard . Therefore, there may exist some errors in
the voltage values, depending on the internal impedance of the DC circuit tester .
REPLACEMENT PARTS LIST (Electrical)
Notes :
1.
2.
3.
Part numbers are indicated on most mechanical parts.
Please use this part number for parts orders.
© indicates that only parts specified by manufacturer be used for safety .
SL-1200MK2(M) + [MI , SL-1200MK2 (MC)+ (MC1
Ref . No .
Part No .
Ref, No.
Part Name & Description
INTEGRATED CIRCUITS
IC101
IC201
IC301
IC302
Integrated
Integrated
Integrated
Integrated
2SD389A-Q
2SD637
2SC1846-R
2SC1328-T
Transistor
Transistor
Transistor
Transistor
SVDSIRBA40
MA7051
MA162A
SVDSR-105C
SVDEBR5505S
SVDGL-9PG2
Rectifier
Diode,Zener5 .iV
Diode
Light Emitting Diode
Light Emitting Diode
Light Emitting Diode
SVQU306115
Crystal, 4 .19328MHz Oscillator
Circuit
Circuit
Circuit
Circuit
DIODES
A
D1
D2,301
D204
D201, 202
D203-206
D401
CRYSTAL
X201
VARIABLE RESISTORS
VR201
VR301
EVLS6AA00a54
EVMH2GAOOB53
VR302
VR303
EVLS6AAOOB54
EVBJ05Cl9ABE
Braking Adjustment (BRAKE), 50k(1 (B)
Adjustment of Pitch Control f0°%(PITCH),
5kn (B)
Pitch,Adjustlnent (Gain) 50kfl
Pitch Control Volume
EVQP5RO4K
EVQP5RO4K
SFDSSS5GLl3C
SFDSD2MSL-4
SFDSSS5GL-2
Switch,
Switch,
Switch,
Switch,
Switch,
SFDN122-01
Lamp, Stylus-illuminator
SWITCHES
S201
5202
S203
5401
S601
©
Speed Selector (33-1/3r .p.m .)
Speed Selector (45r .p .m .)
Start/Stop
Stylus-illuminator
Power
LAMP
PL1
TRANSFORMER
Tl
© ~SLT60EL)713
Power Transformer
©
XBA2FO3NU100
Fuse, 350mA
ERD25FJ562
ERD25FJ682
ERD25FJ272
ERD25FJ561
ERD25FJ471
ERD25FJ103
ERXIANJ4R7
ERD25FJ472
ERD25TJ473
ER026FJ403
ERD25FJISO
ERXIANJlR5
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
Metal Film,
Carbon,
Carbon,
Carbon,
Carbon,
Metal Film,
FUSE
F1
RESISTORS
R1
R2
R3
R4
R5
R101
R102
R103
R104
R105
R106
R107
©
©
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1W,
1/4W,
1/4W,
1/4W,
1/4W,
1W,
6 .6k fl,
6 .8kfl,
2 .7kfl,
560fl,
470fl,
10kfl,
4 .7fl,
4 .7kfl,
47kQ,
10kfl,
1511,
1 .511,
t
t
t
t
t
t
t
t
t
t
t
t
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
Part Name & Description
ERD25FJ103
ERXIANJ4R7
ERGlANJ561
EAD25FJ103
ERD25FJ470
ERD25FJ272
ERD25TJ124
ERD25TJ"183
ERD25TJ563
ERD25TJ224
Carbon,
Metal Film,
Metal Oxide,
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
10kn,
4 .7fl,
560fl,
1Okfl,
47fl,
2 .7kfl,
120kfl,
18kf1,
56kfl,
220k fl,
1/4W,
1W,
1W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
t
t
t
t
t
t
t
t
t
t
5%
5%
5%
5%
5%
5%
5%
5°%
5%
5%
R209
R210
R211
R212
R213
8214
R215
R216
8217
R218
ER025TJ154
ERD25TJ183
ERD25FJ103
ERD25FJ121
ERD25FJ122
ERD25TJ223
ERD25FJ472
ERD25TJ154
ERD25TJ223
ERD25FJ102
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
150kfl,
18kf2,
1OkQ,
120fl,
1 .2kfl,
22kfl,
4 .7kfl,
150kfl,
22kf1,
lkfl,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
t
t
t
t
t
t
t
t
t
t
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
R219
R220
R221
8301
R302
R303
R304
R306
R601
ERD25FJ332
ERD25FJ221
ERD25FJ471
ER025CKF3301
ERD25FJ471
ERD25FJ822
ERD25FJ152
ERD25TJ223
ERD25FJ4R7
Carbon,
Carbon,
Carbon,
Metal Film,
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
3 .3kf2,
22012,
47012,
3.3kfl,
470(2,
8.2kf2,
1 .5kfl,
22kfl,
4 .7(2,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
1/4W,
t
t
t
t
t
t
t
t
t
5%
5%
5%
1%
5%
5%
5°%
5%
5%
Cl
C2
C3
C101, 102
C103
C104,105
C106,107
C108
C109, 110
C111
ECEBlHS471
ECEAIVS330
ECEAIES220
ECEAlVS330
ECEAlVS330
ECQMlH104KZ
ECQMlHl04KZ
ECEAlES101
ECQMIH104KZ
ECQMlH562KZ
Electrolytic,
Electrolytic,
Electrolytic,
Electrolytic,
Electrolytic,
Polyester,
Polyester,
Electrolytic,
Polyester,
Polyester,
470yF,
33juF,
22/AF,
33juF,
33pF,
0 .1PF,
0 .1,uF,
100UF,
0,1yF,
0 .0056pF,
50V
35V
25V
35V
35V
50V,
50V,
25V
50V,
50V,
0112
C201
C202,203
C204
C205
C206
C207
C208
C209
C210
C211
C212
C213
C214
C215
ECEAIJS4R7
ECEAICS330
ECEA50ZI
ECQMlH473KZ
ECEA1AS221
ECEA50ZI
ECCDIHt01K
ECCDlH390K
ECEAIES101
ECQMlH224KZ
ECQMlH473KZ
ECEA50Z3R3
ECCDlH47lK
ECEAIES101
ECEA50Z1
Electrolytic,
Electrolytic,
Electrolytic,
Polyester,
Electrolytic,
Electrolytic,
Ceramic,
Ceramic,
Electrolytic,
Polyester,
Polyester,
Electrolytic,
Ceramic,
Electrolytic,
Electrolytic,
4,7pF,
33pF,
luF,
0 .047liF,
220pF,
luF,
100pF,
39pF,
100pF,
0.22pF,
0.047pF,
3.3pF,
470pF,
100pF,
1uF,
63V
16V
50V
50V,
1ov
50V
50V,
50V,
16V
50V,
50V,
50V
50V,
25V
50V
ECEAIES470
ECQK1123FZ
ECEA50ZI
ECEA1HS100
ECQMlHl22KZ
ECEA50Z1
ECQFlA473MD
ECQUIA473ME
Electrolytic,
Polyester, -Electrolytic ;`'
ElectrOiytic,
Polyest& ; "
Electrolytic,
Polyester,
Polyester,
47uF,
25V
0.012pF,
125V,
I#F,
50V
10pF,
50V
0.0012pF, 50V,
1pF,
50V
0.047pF, 400V,
0.047pF, 400V,
8108
8109, 110
R201
R202
8203
R204
8205 R206
8207
R208
AN6675
AN6680
AN6682
SVITC4011BP
TRANSISTORS
Q1
Q2, 3, 202
Q201
Q203
Part No .
A
©
CAPACITORS
C216
C301,302
C303
C304
C305
C306
C601 [MI
C601 [MCI
©
©
A
0 TERMINAL GUIDE OF TRANSISTOR AND IC
AN6675
AN6682
SVITC4011BP
J22
r
13
AN6680
1
12
13
12 ~~
1
2SC1846
2SC1328
2SD389
2SD637
F
123456189
1:
BC
t10%
t10%
t10%
t10%
t10%
t10%
t10%
110%
t10%
t10%
t 1%
±10%
t20%
t20%
TROUBLE SHOOTING
Power switch doesn't
operate
(B)
I
It doesn't rotate
Start/Stop switch
"push"
Power circuity check
NO
Reference voltage circuity check
" TP5-20V
NO
" TP5 - 20V
F1, S601, T1
D1, 61.1 -Q3
YES
Control circuity check
" Check voltage and wave
form at IC201
NO
IC201
X201
Drive circuity check
" Check voltage and wave
form at IC101
YES
Runaway operation
heck voltage on Q201
" Base voltage - 10V
NO
Reference voltage circuity check
" TP5- 20V
NO
Q201
Q1 -Q3
D2
YES
Control circuity check
" Check voltage and wave
form at IC201
NO
Drive circuity check
" Check voltage and wave
form at IC101
NO
IC201
YES
Turntable rotates
abnormally
Speed changeover is
defective
(F)
Strobe not
illuminating
FG circuity check
" Check voltage on Q203
NO
Q203,
FG coil
Control circuity check
" Check voltage and wave
form at I C201
NO
X201
I C201
Pitch control circuity check
Check voltage and wave
form at IC301, IC302
NO
IC301
IC302
Speed select circuity check
" TP13 -3 .4V
" TP14-0V
NO
IC201
S 201, S 202
13201, 13202
NO
Q202
13203-. .13206
Check voltage at TP28 and TP29
" TP28 - 18AV
" TP29 - 9.6V
+ B lines
Earth (Ground) lines
Printed Circuit Board
2
A
D202
SPEED SELECTOR SWITCH
rr
02
B
S20f
133
C
START/STOP SWITCH
D
E
D204
D203
POWER TRANSFORMER
F
G
AC 117V
(50/60 Hz)
H
ORG
BLU
BLU
BRN
RED
5401
STYLUS-ILLUMINATOR SWITCH
RED
BLK
ORG
IC301
BLK
NL1
ORG
R401 1 .5K
IC302
SVITC4011 BP
r
YEL
AN6682
BRN
Q1
T
2S D389
zv
Q203
2SC1328
- 470
E
1+
73 . . -8 .2K
r~
.Mr305 0 .0012
IF.
16VID0
R21J t~
P2~4~~ .'2
~91 TP27
fi, k
7P74
BRN
R221 470
"---Mh-.-"
R 219 ::
RED
ORG YEL
R216
C202 50'11
150F
0203 OOVI
aft-
c2c5
__" PSi4T'~
L
10
TP
C21
FT
'T04 0 .0
"'
F . Q201 (6
R204-I2_7K
R211 10K
TP23
. iH.
A
s
k
206 5f
3.3
1
gar
C109 G
-if-R10 .1 1
X201
x-11
p (201
Rt
R101
C101 25V33
C20
DV33
10"
O
405 ll!t
0163
2v +3
6
8212 '20
C106
01
nC
~ RI :In }1.
rc,
-At~
BRN
RED
ORG
YEL
BLK
BLU
PPL
BLU
S601
POWER SWITCH
1601
AN6680
Q262
2SD637
5-of
R5 470
NOMINEE
0201
2SC 1846
IC101
A N 6675
_
BLU
B LU
Q2, 3
2S D637
SL-1200MK2 SL-12
ADJUSTMENT (Electrical)
Adjustments (Electrical)
Notes: 9 Make the following adjustments
Condition of the set .
1 . Power switch . . . . . . . . . . . .
2. Pitch control . . . . . . . . . . . .
3. Speed selector switch . . . . . .
Instruments to be used
1 . Tester
2. Frequency counter
Adjustment
(D
after replacing parts such as IC's, transistors, diodes, etc.
. ON
. Center position
. 33-1/3 r.p .m .
Connection Points
Adjustment Point
Adjustment
of pitch
control t0%
(PITCH)
Frequency counter
(2) -. TP27
0 - GROUND
VR301
1 . Pitch control switch to center position .
2. Adjust VR301 for 262.08 kHz 10 .05 kHz of
frequency.
B
Adjustment
of pitch
control gain
Tester
TP31 and
TP32
VR302
Adjust VR302 for 2.7 k92 t0.1 of resistance
value
C
Braking
adjustment
(BRAKE)
VR201
Adjust VR201 for complete stop within 120 ° - 270°
after stop signal initiated . (Turntable becomes free a
few seconds after stop)
A
-
Adjustment Method
O
OO
STOP SIGNAL
2700
Turntable
&1
0
REFERENCE VOLTAGE AND WAVEFORM AT EACH IC
PIN
IC101 (AN6675)
Stop
Start
2V
©
~3
O
Os
©
OO
08
2V
0v
Stop
©
=
©
15V
Start
15V
®
ov
sv
sV
5V ('S
sV q
sv 0
6 .6V
S
oV
ov
5V
5V
-00
15v
'
r
©
Start
2V (04""W
2V,~, , ..
*40"1
15V
,.,_
15V
©
15V
15V
209. ,
©
ov
15V
T
20V
15V
T
~
(S , f
©
®
ov
15V
Same as at right
©
20V
Stop
1""
,uV
20V ao .6
20V 10 .1
20V
20V
0 .2v
0.2V , t
o .l,
1 .7V
1 .7V
Q2
C
IC201 (AN6680)
Ot
T
T
Start
Stop
2 .5V
2 .5V
Start
41.
Same as at right
®
OV
1)
9 .8V
w
©
T5
©
Ov
v.xw
x.sv
®3
7
~oxw
Same as at right
3 .4V
OV
OV
,
-
T
OO
5V
2 .5VZ,OV
5V
5V
Ov
OV,?,7. ,V`
7 .5V
Ov
I
t
OV
®
1 .5V
Sv
OV
3V
3V
Ov
®
0 .2V
®
20-
i
i
~~
IV
2 .8V
®
4
.4
,qY
3V
r
2 .8V
®
-[A-,-!V
3 .4V
T7
o 9v
-
6v
Same as at right
,3J
Same as at right
A
LM
Q
I
iov
stop -:
Start
Ov
9 .8V
tov
fl fl
u u
Same as at right
Stop .
2.5V
©
8v
S .SV
sv
IC301 (AN6682)
Tt
T
Start
Stop
Same as at right
J U LJ L
Same as at right
Start
sv
®
T
'v
TO
©
Same as at right
Stop
lhf
t
,., ®
OV
Ov
3 .9V
3 .9V,(A
Stop
Same as at right
TB
-v
T'
-
9V
9v
w
Same as at right
Same as at right
Start
x.sv
~-
I
I
I
1
IC302 (SV ITC4011 BP)
Start
T1
Same as at right
Stop
41 ~~
5V
Ts
®
Same as at right
SV
Start
C
Start
OV
OO
OV
5V
Stop
OV
v
T
®
Same as at right
Start
5V
,
Stop
O
y,
5V
-~
Sv
Same as at right
B t Same as at right
Same as at right
5V
T4A
0202 (2SD637)
E
T5
Stop
,
OV I~t'~
Sv
©
t .
SV
BLOCK DIAGRAM
Position detection coil
0
U
D201
D202
D201
D202
S203
(33 r .p .m. indicator)
(45 r .p .m . indicator)
(33 r .p .m. switch)
(45 r .p .m . switch)
(Start/Stop switch)
01-2 .3
D1
AC line
50/60 Hz
Rectifier
IC201 (AN6680)
IC301 (AN6682)
Speed
control
0.S.C
0203
0
~ ca f
E
~E
c
C.R
OSC
c0 cli 1
P.C
C .P
PF
u u
CD
ci
_
vCC
2
3
9
{
!
0
U
~7
,n
0
M
v
S301
VR303
SrtUU'a
16
~C " tV h 1~
S301 PITCH LOCK
SWITCH
SL-1200MK2
EXPLODED VIEWS
POWER CIRCUIT P.C .B .
SL-12C
TONE ARM and ARM BASE ASS'Y
REPLACEMENT
Notes :
PARTS
1.
Part numbers are indicated on most mechanical parts .
Please use this part number for parts orders .
2 . © indicates that only parts specified by manufacturer be used for safety .
3 . SL-1200MK2(M) +(MI,SL-120wIK2(MC) +[MC1
Ref . No .
Part Name & Description
Part No .
CABINET and CHASSIS PARTS
1
2
3
4
LIST (Mechanical)
6
7
8
9
10
Dust Cover
Turntable Mat
Turntable
Cover, Turntable
Cover, Stater Frame Ass'y
Stater rame
FG Detector Coil Ass'y
Shaft, Stater Frame Ass'y
Plate, Shield
Cabinet
11
12
13
14
15
16
17
18
19
20
SFUM172-04
SFKT122-01
SFKK122-01E
SFKTO15-06
SFQA122-01
SFUM122-01
SF KTbtS-01E
SF DJ I22,02E
SFGZ122-01
SFYB5-32
Ornament, Stylus-illuminator
Knob, Power Switch
Case, Strobe-illuminator
Knob, Start/Stop Switch
Spring, Start/S1op Knob
Base, Operation
Knob, Speed Selector (33-1/3r .p .m .)
Connector, 7-PIN
Spacer, Rubber (Speed Selector)
Ball, Switch Cam
21
22
23
24
25__
26
27
28
29
30
SFQA520-01
SFUM122-03
SFUM015-11
SF KK172-01
SFXB122-02
SFQA172-01
SFXJ172-01
SFUP122-02E
SFUP122-03
SFDJ122-03E
31
32
33
34
35
36
37
38
39
40
SFX0172-01
SFQA520-01
SFQA001-02
SFXJ172-05
SFHKO40L
SFUP025-01
RJASVA
SFUP132-03
SFGC122-01
SFUP122-10
41
42
43
44
45
46
47
48
49
50
SF KT122-02
SFKK122-03
SFUZ122-01
51
52
53
54
55 IM]
65 [MCI
56
57
58
'
F
1
SFUP122-01
SFDJ122-01E
SFUP122-13
SFAU122-01
SFUP122-05
SFUP122-04
SFUM170-07
SFGC122-02E
SFUP122-06
SFKTO15-02E
SFNN122M01
SFNN122COI
SFX0122-01
SFX0122-02
SFAT122-01A
TONE ARM and ARM BASE
SFPCC31001 K
SFPAM18201 K
SFPWG17201K
SFPRT18201K
SFPZB17202
SFQA829-03
SFPAB13202
SFPJL18202K
SFPZB12203
SFUM170-06
SFPZB12204
SFPAB18201 K
SFPZB12201 K
61
62
63
64
65
66
67
68
70
71
72
73
74
75 [M]
75 (MC)
76
77
78
79
80
81
-
SFAD122-01A
SFTG172-01
SFTE172-01Z
SFUM172-05
SFMGQ20401
SFMG520-31A
SFMZ172-01E
SFMZQ20-01A
SFUP122-12
SFAC122-01
-
Ref . No .
-
"
Head Shell
Tone Arm Ass'y
Balance Weight Ass'y
Lift Assy
Knob, Arm Base Lock
Spring, Lift Ass'y
Knob, Arm Lift
Oil Damper
Plate, Arm Base Cover
Spacer, Phono Cord
Clamper, Phono Cord
Tone Arm Fixing Plate Ass'y
Plate, Position Fix
Phono Cord
Phono Cord
GroundWire
Arm Rest
Arm Base
Ring,
ng, Arm Base Operation
Bracket, Arm Base
Knob, Anti-skate Force Control
XTN3+88FZ
-FXGQ20-02
XTN3+88
XTN26+88
XTN4+10B
XWA48
XUC3FT
XUC2FT
XUC25FT
SFXW910J02
Screw
Screw
Screw
Screw
Screw
Washer
Circlip
Circlip
Circlip
Washer
XTN3+408FZ
XSN3+10BVS
XWE3F12FZ
XTN3+25BFZ
SFXW122-01
XWE3E10
SFPEW1100
SFPEW11003
XSN3+BS
SFXG132-01
Screw
Screw
Washer
Screw
Washer
Washer
Washer
Washer
Screw
Screw
0
0
XTV3+BBFN
XTN3+108
XTN2+108
XSN17+3FY
XSN3+149
SFXW172-04
XUB14FT
SFUZ172-05
XTN3+6B
XSN3+8S
XWA3BFZ
XWA38
XWG3
SFXG829-1
XUCSFT
XTW3+SB
XTV3+88FN
XWE4A10EW
Screw
Screw
Screw
Screw
Screw
Washer
Circlip
O Ring
Screw
Screw
Washer
Washer
Washer
Screw
Circlip
Screw
Screw
Washer
0
0
0
0
0
XTN3+258
XYN3+C6FZS
XSN3+128VS
SFPEW17201
XWG26
Screw
Screw
Screw
Washer
Washer
ACCESSORIES A1 [MI
A1 [MCI
A2
A3
A4
A5
A6
A7
A8
SFNU122MOl
SFNU122C01'
SFWE010
SFPEN3302
SFPEW9601
SFCZV8801
SFPEV9801
SFK0135-01
SFPZB3501
Instruction Book
Instruction Book
Adaptor, 45 r .p.m .
Nut, Cartridge
Washer, Cartridge
Screw, Cartridge
Screw, Cartridge
Overhang Gauge
Shell Weight
P1 [M]
P1 [MCI
P2
P3
P4
P5
P6
P7
SFHP122MOl
SFHP122COl
SFHH122-01
SFHH122-02
SFHD122-01
SFHD122-02
SFHD122-03
SFYH60X60
P8
SFYH40X45
Carton
Carton
Pad, Front
Pad, Rear
Pad, Top
Pad, (A), Turntable
Pad, (B), Turntable
Polyethylene Cover, Turntable Unit and
Dust Cover
Polyehtylene Cover, Turntable
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
00
0
0
0
-
Knob, Pitch Control Volume
Ornament, Pitch Control Volume
Shading Cloth, Pitch Control Volume
Hqlder, LED
- Bucket, Pitch Control Volume
Connector, 4-PIN
Supporter, Bottom Base
Base, Bottom
Supporter (A), Hinge
Supporter (B), Hinge
Case, Hinge
Audio Insulator
Supporter (C), Hinge
Knob, Speed Selector (45 r.p .m)
Name Plate
Name Plate
Pipe (A)
Pipe (B)
Hinge Ass'y
SFDH360MOl
SFDH028-01
SFP
1 720
SFPKDKD1720
SFPKB 1 7201S
SF P
12201
SFPAB 17206
Part Name & Description
SCREWS, WASHERS and CIRCLIPS
Spring, Switch Cam
Cam, Switch
Spacer, LED
Cover, Lamp
Boss, Drive
Spring, Drive Boss
Pin, Lock Canceler
Bracket, Stylus-illuminator
Plate, .Lock Operation
Connector, 3-PIN
Pin, Guide
Spring, Lock Canceler Pin
Spring, Lock Operating Plate M'tg
Pin, Lock Operating Plate M'tg
Clamper; AC Cord
Bracket, AC Cord
AC Cord
Bracket, Power Transformer
Cushion, Power Transformer
Spacer, Power Transformer
Part No .
-
PACKINGS
EXPLODED VIEWS
20
Printed in Japan