SONY CDX-M700 Service Manual
http://servis-manual.com/
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. FRONT PANEL ASSY (NORMAL)
1 Turn on the power and open the front panel.
3 screw (panel)
4 front panel assy
(Take care not to
pull the flexible
board excessively.)
2-2. FRONT PANEL ASSY (INOPERATIVE)
8 Lift the motor block assy
slightly to make a play.
5 PTT 2.6x6
2 screw (panel)
stand
2 screw (panel)
flexible board
6 PTT 2.6x6
3 PTT 2.6x6
4 PTT 2.6x6
22
9
0 front panel assy
(Take care not to pull the
flexible board excessively.)
7 Lift the cam (R) assy
slightly to make a play.
1 screw (panel)
flexible board
2-3. CD MECHANISM BLOCK, FLEXIBLE BOARD
5 CD mechanism block
3 PTT 2.6x4
7 bracket (CD)
6 PTT 2.6x6
8 cover (flexible)
0 flexible board
9 CNP802
Note: When installing
the flexible board,
make the board slack
as illustrated.
1 PTT 2.6x6
2-4. SUB PANEL (CD) SUB ASSY
4 claw
3 PTT 2.6x6
2 PTT 2.6x4
4 CNP701
1 CNP805
6 sub panel (CD) sub assy
5 claw
2 PTT 2.6 x6
23
2-5. MOTOR BLOCK ASSY, CAM (R) ASSY
8
Note : Install the motor block assy and cam (R) assy in this roder.
For phase alignment between cams (L) and (R), see page 29 and 31.
5 motor block assy
3 CNP902
4 PTT 2.6x6
1 PTT 2.6x6
2 cam (R) assy
Note: Install the cam (R) assy with
the cam fully rotated in the
direction of the arrow A.
A
2-6. MAIN BOARD
6 MAIN board
5 PTT 2.6x6
ground point
4 PTT 2.6x6
ground point
1 PTT 2.6x8
3 PTT 2.6x
2 PTT 2.6x8
24
2-7. HEAT SINK
8
5 heat sink
4 PTT 2.6x
3 PTT 2.6x8
2 PTT 2.6x12
1 PTT 2.6x8
2-8. CHASSIS (T) SUB ASSY
1 Unsolder the
lead wires.
2 P 2x3
3 P 2x3
4 chassis (T) sub assy
black
red
white
25
2-9. LEVER SECTION
5 guide (disc)
6 lever (R)
3 tension spring (LR)
7 lever (L)
1 special screw
2 DISC IN SW board
2-10. SERVO BOARD
3 Removal the solders.
5 loading motor assy
4 claws
7 PS 2x4
6 PS 2x4
2 CN2
1 CN3
4 P 2x3
8 SERVO board
26
Fig. 1
1 tension spring (RA)
2 arm (roller)
3 retaing ring (RA)
4 shaft retainer
5 shaft roller assy
retaing ring (RA)
arm
arm
washer
washer
shaft retainer
shaft retainer
2-11. SHAFT ROLLER ASSY
• When installing, take note of the positions
arm (roller) and washers. (Fig. 1)
2-12. FLOATING BLOCK ASSY
7 compression spring (FL)
5 Turn loading ring in the
direction of the arrow.
1 tension spring (KF1)
6 floating block assy
8 compression spring (FL)
4 Fit lever (D) in the
direction of the arrow.
3 damper (T)
2 damper (T)
27
2-13. OPTICAL PICK-UP BLOCK
1 P 2x3
2 sled motor assy
3 optical pick-up block
28
)
3-1. ARM (A-L) ASSY, ARM (B-L) ASSY
y
4 arm (A-L) assy
3 spring (arm L)
SECTION 3
PHASE ALIGNMENT
5 stop ring 1.5, type-E
2 stop ring 1.5, type-E
1 arm (B-L) ass
3-2. CAM (L)
1 Move the arm (B-L) assy in the direction of the
arrow A and the arm (A-L) assy in the direction of
the arrow B fully (full open state).
2 Align the hole on the cam (L) with part C and install
the cam.
4 Tur n the cam (L) clockwise and counterclockwise to
verify that both the arms are operated.
bracket (L) assy
3 stop ring 1.5, type-E
hole
cam (L
C
arm (B-L) assy
A
arm (A-L) assy
B
29
3-3. MOTOR BLOCK
)
V
1 Turn the cam (L) and position the cam so that part A
does not touch the SWITCH board SW900.
SWITCH board
5 B 2.6x4
SW900
4 PTT 2.6x6
3 PTT 2.6x6
2 motor block
cam (L
3-4. ALIGNMENT BETWEEN ARM (A-L) ASSY
AND ARM (B-L) ASSY
1 Input 9V DC to the motor terminal until the cam (L)
stops rotating.
Take care to avoid overload of the motor.
2 Verify that the arm (A-L) assy and arm (B-L) assy
are positioned as shown below (full open).
arm (B-L) assy
A
motor
GND
DC 9
+B
30
arm (A-L) assy
3-5. ARM (A-R) ASSY, ARM (B-R) ASSY
y
2 stop ring 1.5, type-E
5 stop ring 1.5, type-E
4 arm (A-R) ass
1 arm (B-R) assy
3-6. CAM (R)
1 Move the arm (B-R) assy in the direction of the
arrow A and the arm (A-R) assy in the direction of
the arrow B fully (full open state).
2 Align the hole on the cam (R) with part C and install
the cam.
4 Turn the cam (R) clockwise and counterclockwise to
verify that both the arms are operated.
3 spring (arm R)
bracket (R) assy
3 stop ring 1.5, type-E
hole
C
cam (R)
A
arm (B-R) assy
B
arm (A-R) assy
31
CDX-M700R/M750
4-2. BLOCK DIAGRAM — CD SECTION —
OPTICAL PICK-UP
KSS-720A
A
C
B
D
E
F
PD
LD
FOCUS
COIL
TRACKING
COIL
I-V
CONV.
M902
SLED
MOTOR
M901
SPINDLE
MOTOR
M903
LOADING
MOTOR
A
5
C
7
B
6
D
8
FOCUS
ERROR
E
11
TRACKING
F
ERROR
10
PD
4
LD
LD
DRIVE
Q101
TRACKING/FOCUS COIL DRIVE
SLED/SPINDLE/LOADING MOTOR DRIVE
10
11
12
13
AMP
LD
3
IC7
FOCUS
COIL
DRIVE
TRACKING
8
COIL
DRIVE
9
SLED
6
MOTOR
7
DRIVE
SPINDLE
MOTOR
DRIVE
LOADING
5
MOTOR
4
DRIVE
RF AMP, LD APC,
ERROR AMP
IC1
22
21
25
24
31
32
18
1
2
MUTE 1
34
MUTE 2
35
RFO RFAC
RF
EQ
FE
TE
LD ON
HOLD SW
AGC CONT
16
14
13
22
21
20
4
DIGITAL SERVO,
DIGITAL SIGNAL PROCESSOR
IC501
XTAI
86
BCK
81
LRCK
77
SUB
CODE
PCMD
LOCK
SQSO
SQCK
SCOR
XRST
DATA
XLAT
SCLK
CLOK
SENS
MD2
GFS
FOK
79
34
24
73
11
13
14
17
15
16
22
32
RFDC
FE
TE
SE
FFDR
FRDR
TFDR
TRDR
SFDR
SRDR
MDP
EFM
DEM
SERVO
CTL
61
54
50
52
51
42
43
40
41
38
39
35
D/A
I/F
DIGITAL
CLV
PROCESS
TO DISPLAY
SECTION
6
7
SW4
(LIMIT)
SW1
(DOWN)
SW3
(DISC IN)
SW2
(SELF)
1
16M
BCK
LRCK
DATA
CD ON
MD ON
(Page 44)
X1
10MHz
CD SYSTEM CONTROL
IC5
A MUT
OPEN
CLOSE
BUS CLK
BUS SI
CDM ON
17
CD ON
18
BUS ON
LOCK
SI2
SCK2
SCOR
MD2
CD RST
CD DATA
CD XLAT
SCLK
CD CKO
SENS
GFS
FOK
XIN
XOUT
SSTP
D SW
IN SW
SELF SW
LM EJ
LM LOD
SLED –
DRIVE ON
LD ON
HOLD
AGC CONT
RESET
BU IN
BUS SO
46
49
48
64
71
21
67
68
45
65
57
55
54
31
32
11
10
62
63
69
66
40
70
20
22
23
19
6
7
51
52
61
30
60
53
ATT
TO TUNER
SECTION
(Page 43)
MUTE
CONT
Q411
(RESET)
S901
(RESET)
Q805
SW501
10 3
13 2
12
9
8
11
SYSTEM CONTROL
IC801 (1/3)
ATT
5
CD EJECTOR
58
CD OPENREQ
59
UNI CKO
19
UNI SI
17
UNI SO
18
BUS ON
14
SYS RST
6
BU IN
77
SIRCS
RSTX
90
HSTX
86
IC902
1 2
RESET
BATT (H)
CHECK
Q920
BUS INTERFACE
IC802
BATT (L)
CHECK
RESET
BUS ON
CONT
DATA
CLK
• Signal path
:CD
24
BU 5V
BATT
BATT
Q804
1
8
6
6
4
3
5
2
4
1
7
CNP801
BUS
CONTROL IN
SRST
BUS CLK
2
TO DISPLAY
SECTION
04
(Page 44)
BUS SI
BUS ON
BU CHECK
UNI SO
LINK OFF
SIRCS
Q806
Q801
4242
4-3. BLOCK DIAGRAM — TUNER SECTION —
TUNER UNIT
TU601
ANT MPX
(ANTENNA)
04
1 10
ANT
2
AM IF
AMDET
RDS
S METER VSM
SDA IC
SCL IC
FM AGC
SDA ROM
SCL ROM
19
14
12
13
17
18
8
9
(M700R)
4
BUF
Q607
X601
4.3MHz
• Signal path
: FM
: AM/MW
Q602 Q601
MUTE
CONTROL
Q604,606
NOISE
FILT
IC602
RDS DECODER
IC601
16
FM DET
4
XO
5
XI
20
S METER
TO DISPLAY
SECTION
(Page 44)
15
Q605
RDS
SCL
MPTH
DAVN
CDX-M700R/M750
PJ401
–1
L
BUS AUDIO IN
PJ402
CNP901
–2
–5
–6
–3
–4
–1
–2
1
9
2
10
4
12
3
11
13
14
7
15
5
6
16
FL+
FL–
RL+
RL–
FR+
FR–
RR+
RR–
ATT
ILL
ACC
TEST
AMP REM
ANT REM
BATT
R
L
LINE OUT
FRONT
R
L
LINE OUT
REAR
R
L
SUB OUT (MONO)
R
MD +B
MD +B
(M750)
7
2
(M700R)
ATT
IC402
PRE
AMP
ACC
DET
Q918
Q905, 919
Q924, 925
12
13
Q410
POWER
CONT
POWER
CONT
MUTE
CONTROL
Q401, 402
ILL
DET
Q902
COM 8V
TU 8V
Q923
Q202
Q201
Q403
BATT
FL
RL
POWER AMP
12
11
22
MUTE
4
STBY
Q917
Q901
IC903
ELECTRONIC VOLUME
IC401
1 30
SEL OUT FL
3
9
10
2
8
FL
RL
SR
ADL
(M750)
34
ACIFLR
33
AC INLR
35
SWINR
24
OUTSSL
13
MPX
12
AM IF
11
AM
15
MP IV
14
S METER
20
SDA
21
SCL
17
QUAL
18
MUTE
SYSTEM CONTROL
IC801 (2/3)
31
VOL ATT
32
TU ATT
50
QUALITY
56
NS MASK
52
MPTH
75
DAVN
53
I2CSIO
70
I2CCKO
71
FM AGC
51
E2PSIO
10
E2PCKO
11
OUT RL
SWR
ST-BY
TEL ATT
ILL IN
ACC IN
X1A
X0A
TEST
PW ON
TU ON
29
IC409
25
4
TO CD
SECTION
(Page 42)
55
16
95
81
73
X802
32kHz
74
84
83
92
X0
X1
114
X801
3.68MHz
93
BATT
POWER
CONT
Q461
R-CH
R-CH
R-CH
5
3
9
7
R-CH
F901
43 43
CDX-M700R/M750
4-4. BLOCK DIAGRAM — DISPLAY SECTION —
ILL ON 9V
TX (SO)
RX (SI)
FL SW
04
SECTION
(Page 42)
CN502
2
TO CD
LCD902
LCD901
LCD DRIVER
LCD 9V
IC902
LCD 9V
BUS SI
UNI SO
BUS CLK
BUS ON
BU CHECK
EMPH
S RST
LINK OFF
SIRCS
SW1
85
POWER
CONT.
Q901,902
6
IR
RECEIVE
IC501
IR
RECEIVE
IC903
LCD DRIVER
IC901
INH
CLK
DATA
100
9997 98
100
9997 98
INH
CLK
DATA
SW2
98 61
97
101
38
49
82
BUF
7
2
1
18.43MHz
X351
MD +B
81
50
85
86
66
69
64
70 52
IC303
DIMMER
CEO
86
CEO
84
Q906 Q905
DISPLAY CONTROL
IC301
DSP CLK
LED SW2
LED SW1
SP LAT
TX/FL-SO
ILL ON
POWER
CONT.
Q907,908
SB-SI
BOOT
POWER
Q903,904
UNI SI
UNI SO
UNI SCK
BUS ON
BU IN
NMI
RES
LINK OFF
XTAL
EXTAL
CEO
INH
CLK
CEI
RX
CONT.
63
57
47
46
33
62
60
LCD9V
LCD9V
BU 5V
BU 5V
CNP803
(REMOTE IN)
BATT
M601
OPEN/CLOSE
MOTOR
3 7
Q501,502
1 3
3
14
16
I
DET
IC308
SW900
(OPEN/CLOSE)
LED
DRIVE
AD ON
CONT.
Q807
KEY
ACTIVE
Q921
KEY IN
MATRIX
REG
IC306
2
MOTOR
DRIVE
IC307
12
11
6
VREF
CONT.
Q303,304
DET
Q302
OPEN
CLOSE
AD ON
SW504
Z
MT +B
I
MT +B
SYSTEM CONTROL
79
KEY ACK
72
RC IN1
48
RC IN0
46
KEY IN0
47
KEY IN1
106
BOOT
116
LED SW2
115
LED SW1
4
SP LATCH
12
FLS SI
13
FLS SO
82
FLSWPWON
MOT+
98
MOT–
97
FPCRTL
40
I DET
96
OPEN SW
100
CLOSE SW
99
FLASH W
69
IC801 (3/3)
DSP
26
SO
25
SI
27
CKO
36
RST
35
LAT
78
READY
29
DSPMST
1
TO CD
SECTION
(Page
42)
76
CDON IN
108
DSP ON
89
MD2
88 1 2
MD1
15
BEEP
37
SHIFT
BEEP
DRIVE
Q803
SHIFT
Q909
DATA
LRCK
BCK
16M
CD ON
MD ON
MD 5V
LATCH
POWER
Q912, 916
3.3V
REG
IC904
DC/DC CONV.
CONTROL
IC901
2
IC304
9 8
2 3
5 6
AND
4
IC352
1
CONT.
BU 5V
BZ801
POWER
CONT.
Q903, 904
9
VCC
RT
2
OUT1
INA1
OUT2
INA2
POWER
CONT.
Q913, 915
BATT
7
3
10
14
63
RVDT
61
TRDT
59
SCK
57
DSP RST
62
XLAT
60
REDY
77
MST/SLV
71
DATA
76
LRCK
75
BCK
58
MCKO
4 6
IC305
BATT
ON/OFF
DRIVE
ON/OFF
DRIVE
REG
Q914
3.3V
REG
3.3V
REG
Q301
Q906
Q911
DSP
IC302
DAILO
DA3RO
DA1RO
DA3LO
DA2RO
ADL IN
ADR IN
MCK0
MCK1
BATT
27
54
29
52
43
35
46
40
41
CD 5V
DSP 5V
D 3.3V
A 3.3V
MD 5V
MD +B
R-CH(FR)
R-CH(RR)
R-CH
X302
16MHz
REG
1 2
IC905
• Signal path
: FM
: CD
IC405
IC405
IC406
BU 5V
FL
RL
SR
ADL
3
TO TUNER
SECTION
(Page 43)
4444
4-5. CIRCUIT BOARDS LOCATION
SWITCH board
DISPLAY board
DISC IN SW board
LIMIT SW board
SUB board
SERVO board
MAIN board
tuner unit
(TU601)
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
• % : indicates tolerance.
f
•
• C : panel designation.
Note: The components identified by mark 0 or dotted line
• U : B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
• V oltages are taken with a V OM (Input impedance 10 MΩ).
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
for printed wiring boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
• b : Pattern from the side which enables seeing.
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B) pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.
: internal component.
with mark 0 are critical for safety.
Replace only with part number specified.
supply from ACC and BATT cords.
Voltage var iations may be noted due to normal produc-
tion tolerances.
Voltage var iations may be noted due to normal produc-
tion tolerances.
F : FM
f : AM/MW
J : CD
a
: Through hole.
(The other layer’s patterns are not indicated.)
4
W or less unless otherwise
• Waveforms (MODE:PLAY)
1
0V
Approx. 200mVp-p
qd
(TE)
IC1
2
0V
Approx. 620mVp-p
qf
(FE)
IC1
3
1.2Vp-p
qh
(RFO)
IC1
4
5Vp-p
22.7µsec
IC501
(LRCK)
uj
5
5Vp-p
474nsec
IC501
(PCMO)
ul
6
5.7Vp-p
474nsec
ia
(BCK)
IC501
7
8
16.89MHz
IC501
IC5
ih
10MHz
(X IN)
ea
3.8Vp-p
(XTAI)
2Vp-p
45 45
CDX-M700R/M750
• Refer to page 45 for Waveforms.
4-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (1/2) — • Refer to page 60 for IC Block Diagrams.
(Page 49)
Note:
• Voltage and wavefor ms are dc
with respect to ground
under no-signal conditions.
no mark : CD PLAY
: Impossible to measure
∗
(Page 52)
(Page 49)
4848
• Refer to page 45 for Waveforms.
4-8. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (2/2) — • Refer to page 60 for IC Block Diagrams.
CDX-M700R/M750
(Page 48)
(Page 48)
49 49
Note:
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
: Impossible to measure
∗
CDX-M700R/M750
Ver 1.3 2001. 05
4-10. SCHEMATIC DIAGRAM — MAIN SECTION (1/4) — • Refer to page 60 for IC Block Diagrams.
Note:
• Voltage is dc with respect to ground under
no-signal (detuned) condition.
no mark : FM
< > : CD PLAY
(Page 48)
D411, 412
CRZ22 (M700R)
CRS02 (M750)
(Page 53)
(Page 54)
(Page 55)
5252
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