Sony CDX-646 / CDX-646X Service Manual ▷ View online
CDX-646/646X
5
5
2-3.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: 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.
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from CD changer controller.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
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.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD PLAY
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
1.4
±
0.3 Vp-p
• Waveforms
– RF Board –
– RF Board –
1
IC101
qh
(FE) (CD play mode)
2
IC101
qk
(TE) (CD play mode)
3
IC101
qg
(RFAC) (CD play mode)
Approx.
100 mVp-p
100 mVp-p
Approx.
250 mVp-p
250 mVp-p
4.2 Vp-p
59.1 ns
1.8 Vp-p
7.5
µ
s
3.8 Vp-p
250 ns
– MAIN Board –
1
IC101
wh
(MDP) (CD play mode)
2
IC101
yj
(XTAO) (CD play mode)
3
IC201
ia
(X1) (CD play mode)
CDX-646/646X
6
6
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
R119
CNJ101
SW3
(LIMIT)
BLU
YEL
YEL
RED
BLK
WHT
1-679-422-
12
(12)
M101
(SLED)
M
LSW BOARD
M103
(CHUKING)
M
OPTICAL
PICK-UP
BLOCK
(KSS-720A)
OP FLEXIBLE
BOARD
MAIN FLEXIBLE
BOARD
MAIN BOARD
TP
(TE)
TP
(VC)
A
M102
(SPINDLE)
M
BLK
RED
YEL
BLU
1-679-421-
12
(12)
TP
(RFAC)
1-679-421-
12
(12)
B
C
D
E
F
G
H
I
J
K
1
2
3
4
5
6
7
8
9
10
11
12
13
A
2-4.
PRINTED WIRING BOARDS – RF/LSW Boards –
• Semiconductor
Location
Ref. No.
Location
IC101
H-6
IC201
J-5
Q101
F-7
Q102
H-7
(Page 8)
CDX-646/646X
7
7
2-5.
SCHEMATIC DIAGRAM – RF/LSW Boards –
•
See page 5 for for Waveforms.
•
See page 13 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.
Les composants identifiés par une marque
0
sont
critiques pour la sécurité.
Ne les remplacer que
par une pièce portant le numéro spécifié.
(Page 10)
CDX-646/646X
8
8
IC401
D307
D306
IC301
Q302
IC306
Q202
Q402
SW201
MAGAZINE
DETECT
IC201
IC302
C314
C303
C301
C309
C308
C302
C203
C205
C201
C204
C122
C123
C121
C103
C110
C107
C106
C104
C105
C108
C112
C504
C502
C501
C503
C101
C408
C411
C412
C307
C304
C306
C317
C318
R305
R309
R306
R204
R210
R201
R211
R202
R221
R222
R311
R207
R122
R123
R125
R107
R101
C109
R102
R103
R104
R105
R506
R504
R503
R501
R409
R403
R405
R411
R408
R410
R406
R407
R301
R421
R420
R422
R416
R415
R413
R414
R302
R303
R304
R114
C119
C206
C418
C431
D310
R418
D301
D304
D305
R223
IC303
Q305
Q410
Q420
IC101
Q303
C312
R106
R502
R505
C413
R404
R412
C414
R417
D312
R310
MAIN BOARD
(COMPONENT SIDE)
1-681-576-
11
(11)
B
JACK BOARD
CNJ901
JACK FLEXIBLE BOARD
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
2-6.
PRINTED WIRING BOARDS – MAIN Board (Component Side) –
• Semiconductor
Location
Ref. No.
Location
D301
E-2
D304
E-3
D305
E-3
D306
F-5
D307
F-5
D310
F-5
D312
G-4
IC101
C-8
IC201
F-9
IC301
H-4
IC302
D-3
IC303
G-3
IC306
C-5
IC401
C-6
Q202
G-8
Q302
F-6
Q303
F-4
Q305
G-4
Q402
F-6
Q410
D-4
Q420
E-4
(Page 12)
(Page 6)
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