CDX-M700R/M750

CDX-M700R/M750
SERVICE MANUAL
US Model
Canadian Model
Ver 1.2 2001. 03
CDX-M750
AEP Model
UK Model
CDX-M700R
Photo: CDX-M750
• The tuner and CD sections have no adjustments.
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (CDX-M750)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
19 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more
than 1% total harmonic distortion.
Other Specifications
CD player section
System
Compact disc digital audio
system
Signal-to-noise ratio
90 dB
Frequency response
10 – 20,000 Hz
Wow and flutter
Below measurable limit
Laser Diode Properties (CDX-M750)
Material
GaAlAs
Wavelength
780 nm
Emission Duration
Continuous
Laser output power
Less than 44.6 µW*
* This output is the value measured at a distance
of 200 mm from the objective lens surface on the
Optical Pick-up Block.
Model Name Using Similar Mechanism
NEW
CD Drive Mechanism Type
MG-383V-121//K
Optical Pick-up Name
KSS-720A
MW/LW (CDX-M700R)
Tuning range
MW: 531 – 1,602 kHz
LW: 153 – 279 kHz
Aerial terminal
External aerial connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity
MW: 30 µV
LW: 40 µV
Power amplifier section
Outputs
Speaker outputs
Speaker impedance
4 – 8 ohms
Maximum power output 50 W × 4 (at 4 ohms)
General
Outputs
Inputs
Tuner section
FM
Tuning range
Power requirements
87.5 – 107.9 MHz (CDX-M750)
87.5 – 108.0 MHz (CDX-M700R)
Antenna terminal
External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Usable sensitivity
8 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
66 dB (stereo),
72 dB (mono)
Harmonic distortion at 1 kHz
0.6% (stereo),
0.3% (mono)
Separation
35 dB at 1 kHz
Frequency response
30 – 15,000 Hz
AM (CDX-M750)
Tuning range
Antenna terminal
Intermediate frequency
Sensitivity
530 – 1,710 kHz
External antenna connector
10.7 MHz/450 kHz
30 µV
9-870-134-12
Sony Corporation
2001C0400-1
© 2001. 3
Audio Entertainment Group
General Engineering Dept.
Audio outputs (3)
Power antenna relay
control lead (CDX-M750)
Power aerial relay
control lead (CDX-M700R)
Power amplifier control
lead
Telephone ATT control
lead
Illumination control lead
12 V DC car battery
(negative ground)
– Continued on next page –
FM/AM COMPACT DISC PLAYER
CDX-M750
FM/MW/LW COMPACT DISC PLAYER
CDX-M700R
1
CDX-M700R/M750
4-2. BLOCK DIAGRAM — CD SECTION —
4
RF AMP, LD APC,
ERROR AMP
IC1
OPTICAL PICK-UP
KSS-720A
A
5
DIGITAL SERVO,
DIGITAL SIGNAL PROCESSOR
IC501
RF
EQ
RFO
16
61
RFAC
EFM
DEM
PCMD
D/A
I/F
I-V
CONV.
8
LRCK
DIGITAL
CLV
FE
E
11
F
10
E
F
PD
4
TRACKING
ERROR
TE
LD
3
50
13
52
51
PD
10
11
SUB
CODE
PROCESS
SE
LD ON
22
HOLD SW 21
AGC CONT 20
LD
FOCUS
COIL
DRIVE
22
42
21
43
25
40
9
24
41
M902
SLED
MOTOR
6
7
SLED
MOTOR
DRIVE
31
32
38
39
M901
SPINDLE
MOTOR
12
13
SPINDLE
MOTOR
DRIVE
8
SQSO
SQCK
SCOR
MD2
XRST
DATA
XLAT
SCLK
CLOK
SENS
GFS
FOK
TRACKING
COIL
DRIVE
TRACKING
COIL
34
19
17
18
14
6
77
BU IN 60
TRACKING/FOCUS COIL DRIVE
SLED/SPINDLE/LOADING MOTOR DRIVE
IC7
FOCUS
COIL
BUS CLK 51
BUS SI 52
17 CDM ON
18 CD ON BUS ON 61
RESET 30
46 LOCK
FE
TE
• Signal path
5 ATT
58 CD EJECTOR
59 CD OPENREQ
:CD
6
7
24
49 SI2
48 SCK2
64 SCOR
73
11
13
14
17
15
16
22
32
71
21
67
68
45
65
57
55
54
UNI CKO
UNI SI
UNI SO
BUS ON
SYS RST
BU IN
90 RSTX SIRCS 24
86 HSTX
S901
(RESET)
IC902
LD
AMP
LD
DRIVE
Q101
14
LOCK
SYSTEM CONTROL
IC801 (1/3)
MUTE
CONT
Q411
DATA
CD ON
MD ON
79
TO TUNER
SECTION
(Page 43)
A MUT 19
OPEN 6
CLOSE 7
D
FOCUS
ERROR
CD SYSTEM CONTROL
IC5
16M
BCK
54 RFDC
D
ATT
TO DISPLAY
SECTION (Page 44)
XTAI 86
BCK 81
LRCK 77
A
C
7
B
6
C
B
1
18
35
FFDR
TRDR
BU 5V
1 RESET 2
SW501
(RESET)
BATT (H)
CHECK
Q920
BATT
BUS INTERFACE
IC802
31 XIN
X1
10MHz
FRDR
TFDR
MD2
CD RST
CD DATA
CD XLAT
SCLK
CD CKO
SENS
GFS
FOK
10
BATT (L)
CHECK
3
13
RESET
2
12
BUS ON
CONT
1
SERVO
CTL
SFDR
SRDR
MDP
SW4
(LIMIT)
11 SSTP
SW1
(DOWN)
10 D SW
SW3
(DISC IN)
62 IN SW
Q804
SW2
(SELF)
8
9
63 SELF SW
DATA
6
8
M903
LOADING
MOTOR
5
4
LOADING
MOTOR
DRIVE
BATT
32 XOUT
1
2
69
66
40
70
20
22
23
MUTE 1 34
MUTE 2 35
LM EJ
LM LOD
SLED –
DRIVE ON
LD ON
HOLD
AGC CONT
BUS SO 53
2
TO DISPLAY
SECTION
(Page 44)
04
42
42
SRST
BUS CLK
BUS SI
BUS ON
BU CHECK
UNI SO
LINK OFF
SIRCS
11
CLK
6
5
4
3
2
1
7
4
CNP801
BUS
CONTROL IN
Q805
Q806
Q801
CDX-M700R/M750
4-3. BLOCK DIAGRAM — TUNER SECTION —
PJ401
–1
(M750)
ELECTRONIC VOLUME
IC401
1 SEL
R-CH
3
TO DISPLAY
SECTION
(Page 44)
TUNER UNIT
TU601
(ANTENNA)
1 ANT
2 ANT
34
33
35
24
7
–5
12
PRE
AMP
OUT RL 29
2
13
12
11
15
14
20
21
17
18
Q601
MUTE
CONTROL
Q604,606
MPX
AM IF
AM
MP IV
S METER
SDA
SCL
QUAL
MUTE
–4
PJ402
–1
IC409
–2
SWR 25
4
TO CD
SECTION
(Page 42)
(M750)
POWER AMP
IC903
Q403
MUTE
CONTROL
Q401, 402
ATT
L
R
L
R
LINE OUT
FRONT
LINE OUT
REAR
L
SUB OUT (MONO)
R
CNP901
1
FL+
5
FL
12
9
Q410
NOISE
FILT 1
IC602
BUS AUDIO IN
R
(M700R)
31 VOL ATT
32 TU ATT
5
–6
–3
13
R-CH
SYSTEM CONTROL
IC801 (2/3)
BUF
Q607
R-CH
Q201
MPX 10
AM IF 19
AMDET 8
Q602
ACIFLR
AC INLR
SWINR
OUTSSL
L
IC402
OUT FL 30
Q202
FL
RL
SR
ADL
–2
FL–
3
2
RL+
9
50 QUALITY
RL
Q605
11
10
RDS 9
X601
4.3MHz
16 FM DET
4 XO
22 MUTE
4 STBY
ST-BY 55
RDS DECODER
IC601
TEL ATT
ILL IN
ACC IN
X1A
RDS 9
SCL 10
MPTH 2
5 XI
20 S METER DAVN 8
52 MPTH
75 DAVN
RL–
7
56 NS MASK
16
95
81
73
X0A 74
Q923
ACC
DET
Q918
X802
32kHz
R-CH
ILL
DET
Q902
(M700R)
S METER
SDA IC
SCL IC
FM AGC
SDA ROM
SCL ROM
14
12
13
4
17
18
53
70
71
51
10
11
VSM
I2CSIO
I2CCKO
FM AGC
E2PSIO
E2PCKO
TEST 84
Q917
PW ON 83
X0 92
X1 93
X801
3.68MHz
MD +B
POWER
CONT
Q905, 919
COM 8V
5
6
POWER
CONT
Q461
BATT
4
FR+
12
FR–
3
RR+
11
RR–
13
ATT
14
ILL
7
ACC
15
TEST
AMP REM
ANT REM
Q901
TU ON 114
• Signal path
04
MD +B
: FM
POWER
CONT
Q924, 925
: AM/MW
43
43
F901
TU 8V
BATT
16
BATT
CDX-M700R/M750
4-4. BLOCK DIAGRAM — DISPLAY SECTION —
DISPLAY CONTROL
IC301
BUS SI
98 UNI SI
UNI SO
97 UNI SO
101
38
49
82
BUS CLK
BUS ON
BU CHECK
2
TO CD
SECTION
(Page 42)
SB-SI 61
DSP CLK 63
SYSTEM CONTROL
IC801 (3/3)
UNI SCK
BUS ON
BU IN
NMI
AD ON
CONT.
Q807
BU 5V
IC405
AD ON
EMPH
S RST
6
BUF
7
IC303
81 RES
DSP
50 LINK OFF
LINK OFF
SIRCS
KEY
ACTIVE
Q921
BU 5V
DSP
IC302
79 KEY ACK
SO
SI
CKO
RST
LAT
READY
26
25
27
36
35
78
63
61
59
57
62
60
IR
RECEIVE 1
IC903
KEY IN
MATRIX
LCD DRIVER
IC901
85 XTAL
INH
CLK
DATA
CEO
DIMMER
LCD902
86 EXTAL
X351
18.43MHz
97 99 100 98 86
66
69
64
70
LCD901
CEO
INH
CLK
CEI
LCD DRIVER
IC902
SW1
INH
CLK
DATA
CEO
MD +B
CN502
ILL ON 9V
TX (SO)
RX (SI)
FL SW
46 KEY IN0
47 KEY IN1
LRCK
2
3
76 LRCK
BCK
5
6
75 BCK
106
116
115
4
12
13
ILL ON 52
POWER
CONT.
Q907,908
9
8
BOOT
LED SW2
LED SW1
SP LATCH
FLS SI
FLS SO
1
AND
4 IC352 2
CD ON
MD ON
SW2 84
98 MOT+
97 MOT–
REG
Q914
MD2 89
MD1 88
1
POWER
CONT.
Q912, 916
POWER
CONT.
Q901,902
Q906
Q905
3.3V
REG 2
IC904
BU 5V
BEEP 15
BEEP
DRIVE
Q803
4
BZ801
LCD9V
3
I
DET 7
IC308
I
DET
Q302
DC/DC CONV.
CONTROL
IC901
96 I DET
SW900
(OPEN/CLOSE)
OPEN
CLOSE
OUT1 7
99 CLOSE SW
LED
DRIVE
Q501,502
SHIFT 37
69 FLASH W
04
44
POWER
CONT.
Q903, 904
9
VCC
100 OPEN SW
LCD 9V
44
ADL
R-CH
MCK0 40
X302
16MHz
SHIFT
Q909
1
REG
2
IC905
BU 5V
CD 5V
3.3V
REG 6
IC305
D 3.3V
3.3V
REG
Q301
A 3.3V
• Signal path
: FM
40 FPCRTL
POWER
CONT.
Q903,904
ADL IN 35
DSP 5V
85
MT +B
SR
BATT
BATT
MD 5V
3 MOTOR
11
14 DRIVE
IC307 6
16
12
IC406
DA2RO 43
58 MCKO
POWER
CONT.
Q913, 915
CDON IN 76
DSP ON 108
MT +B
R-CH(RR)
1
2
M601
OPEN/CLOSE
MOTOR
LCD9V
REG
IC306 3
RL
MCK1 41
16M
IC405
DA1RO 29
ADR IN 46
82 FLSWPWON
VREF
CONT.
Q303,304
LCD 9V
DATA
TO CD
SECTION
(Page
42)
R-CH(FR)
71 DATA
48 RC IN0
1
57
47
46
33
62
60
BATT
97 99 100 98
LATCH
IC304
SW504
Z
BOOT
LED SW2
LED SW1
SP LAT
RX
TX/FL-SO
DA3RO 54
77 MST/SLV
72 RC IN1
CNP803
(REMOTE IN)
FL
DAILO 27
DA3LO 52
DSPMST 29
IR
RECEIVE 2
IC501
RVDT
TRDT
SCK
DSP RST
XLAT
REDY
: CD
BATT
ON/OFF
DRIVE
Q906
MD 5V
ON/OFF
DRIVE
Q911
MD +B
INA1 3
2 RT
OUT2 10
INA2 14
3
TO TUNER
SECTION
(Page 43)
CDX-M700R/M750
(Page 52)
(Page 49)
• Refer to page 45 for Waveforms.
4-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (1/2) — • Refer to page 60 for IC Block Diagrams.
Note:
• Voltage and waveforms are dc
with respect to ground
under no-signal conditions.
no mark : CD PLAY
: Impossible to measure
∗
(Page 49)
48
48
CDX-M700R/M750
• Refer to page 45 for Waveforms.
4-8. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (2/2) — • Refer to page 60 for IC Block Diagrams.
(Page 48)
(Page 48)
Note:
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
: Impossible to measure
∗
49
49
CDX-M700R/M750
4-10. SCHEMATIC DIAGRAM — MAIN SECTION (1/4) — • Refer to page 60 for IC Block Diagrams.
(Page 53)
Note:
• Voltage is dc with respect to ground under
no-signal (detuned) condition.
no mark : FM
<
> : CD PLAY
(Page 48)
(Page 54)
52
52
(Page 55)
CDX-M700R/M750
(Page 52)
4-11. SCHEMATIC DIAGRAM — MAIN SECTION (2/4) — • Refer to page 60 for IC Block Diagrams.
Note:
• Voltage is dc with
respect to ground under
no-signal (detuned)
condition.
no mark : FM
(
) : AM/MW
(Page 54)
(Page 55)
53
53
CDX-M700R/M750
4-12. SCHEMATIC DIAGRAM — MAIN SECTION (3/4) — • Refer to page 60 for IC Block Diagrams.
(Page 53)
(Page 55)
(Page 52)
Note:
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
54
54
CDX-M700R/M750
4-13. SCHEMATIC DIAGRAM — MAIN SECTION (4/4) — • Refer to page 60 for IC Block Diagrams.
(Page 52)
(Page 53)
(Page 54)
(Page 57)
(Page 59)
Note:
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
55
55
CDX-M700R/M750
4-14. PRINTED WIRING BOARD — SUB SECTION —
(Page 51)
56
56
CDX-M700R/M750
4-15. SCHEMATIC DIAGRAM — SUB SECTION —
(Page 55)
Note:
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
57
57
CDX-M700R/M750
(Page 55)
4-17. SCHEMATIC DIAGRAM — DISPLAY SECTION —
59
59