Sony CDX-757MX (serv.man2) Service Manual ▷ View online
CDX-757MX
21
21
CDX-757MX
•
Note for Printed Wiring Boards and Schematic Diagrams
•
Circuit Boards Location
Note on Schematic Diagram:
•
All capacitors are in
µ
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
•
All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
• C
: panel designation.
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
• A
: B+ Line.
• H
: adjustment for repair.
•
Power voltage is dc 14.4V and fed with regulated dc power
supply from CD changer controller.
supply from CD changer controller.
•
Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
under no-signal conditions.
no mark : CD PLAY
•
Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
•
Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
Voltage variations may be noted due to normal produc-
tion tolerances.
•
Circled numbers refer to waveforms.
•
Signal path.
J
: CD PLAY
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side) the parts face are indicated.
SWITCH board
JACK board
LSW board
RF board
MAIN board
CDX-757MX
22
22
CDX-757MX
1-679-421-
13
(13)
C201
C121
C105
SW1
CHUKING
END DETECT
SW2
SAVE END
DETECT
CN102
IC201
C102
Q101
TP101
TP102
TP108
TP107
TP104
TP103
TP105
TP106
IC101
C217
C203
C204
C205
C206
C207
C208
C202
C106
C209
C109
C104
C122
C107
C111
C101
R201
R202
R203
R204
R206
R205
R207
R208
R210
R209
R211
R212
R214
R213
R218
R219
R220
R222
R223
R104
R215
R216
R108
R109
R110
R117
R112
R113
R107
R105
R101
R103
R102
C103
R120
R121
R122
R106
C108
Q102
CNJ101
SW3
(LIMIT)
BLU
YEL
YEL
RED
BLK
WHT
1-679-422-
13
(13)
M101
(SLED)
M
LSW BOARD
M103
(CHUKING)
M
OPTICAL
PICK-UP
BLOCK
(KSS-721A)
OP FLEXIBLE
BOARD
MAIN FLEXIBLE
BOARD
MAIN BOARD
CN101
TP
(TE)
TP
(VC)
A
M102
(SPINDLE)
M
BLK
RED
YEL
BLU
1-679-421-
13
(13)
TP
(RFAC)
R111
R116
1
2
3
4
5
6
7
8
9
10
11
12
13
A
B
C
D
E
F
G
H
I
J
K
(Page 24)
6-4. PRINTED WIRING BOARDS – RF/LSW Boards –
•
See page 21 for Circuit Boards Location.
: Uses unleaded solder.
CDX-757MX
23
23
CDX-757MX
MAIN
BOARD
(1/3)
CN101
Q101
MSB709
-RT1
Q102
MUN2212T1
(Page 26)
6-5. SCHEMATIC DIAGRAM – RF/LSW Boards –
•
See page 32 for Waveforms.
•
See page 33 for IC Block Diagrams.
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
CDX-757MX
24
24
CDX-757MX
IC302
IC301
IC303
IC602
IC102
IC603
IC101
IC501
IC601
IC605
IC306
IC201
IC202
IC401
IC604
MAIN BOARD
(COMPONENT SIDE)
1-684-649-
12
(12)
1
13
B
JACK BOARD
CNJ901
JACK FLEXIBLE BOARD
1
30
31
60
120
91
90
61
32
16
1
17
49
64
33
48
1
3
3
5
4
4
25
1
26
50
51
75
100
76
26
1
A
RF BOARD
CNJ101
MAIN FLEXIBLE BOARD
1
2
3
4
5
6
7
8
9
10
11
12
A
B
C
D
E
F
G
H
I
J
K
3
1
4
5
3
1
4
5
SW201
MAGAZINE
DETECT
D202
R213
6-6. PRINTED WIRING BOARDS – MAIN Board (Component Side) –
•
See page 21 for Circuit Boards Location.
(Page 22)
(Page 30)
•
Semiconductor
Location
Location
Ref. No. Location
D201
E-9
D202
E-8
D301
E-2
D302
E-2
D303
E-1
D306
F-5
D310
F-4
IC101
C-9
IC102
D-8
IC201
F-9
IC202
F-11
IC301
G-3
IC302
F-1
IC303
G-3
IC306
A-9
IC401
C-4
IC501
B-6
IC601
C-6
IC602
E-6
IC603
F-6
IC604
F-8
IC605
B-7
Q202
E-11
Q301
F-5
Q302
F-5
Q303
G-4
Q304
G-4
Q402
E-4
Q410
D-2
Q420
D-3
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