Sony CDX-838 Service Manual ▷ View online
21
21
CDX-838
7-6.
SCHEMATIC DIAGRAM – RF/SW Boards –
•
See page 27 for Waveforms.
•
See page 30 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 piéce portant le numéro spécifié.
(Page 24)
22
22
CDX-838
1
2
1
7
8
14
IC302
1
4
5
8
IC301
R309
B C E
Q302
B C E
Q301
IC304
1
13
14
26
IC402
1
16
CN301
FB603
FB604
FB605
C619
R612
R615
E C B
Q604
Q603
B C E
C618
R614
R611
1
12
13
24
IC601
1
19
20
32
33
51
52
64
1
4
5
8
IC403
C106
R101
1
30
31
50
51
80
100
C115
C322
1
26
1
24
25
40
41
64
80
65
1
4
5
8
IC202
Q201
IC503
C502
X501
1
20
21
40
41
60
80
1
14
15
28
IC502
IC501
IC401
61
MAIN BOARD
(COMPONENT SIDE)
M
M104
(ELEVATOR)
B
JACK BOARD
CN903
05
A
RF BOARD
CNJ12
MAIN FLEXIBLE BOARD
1-679-339-
11
1-672-616-
12
(12)
1
2
3
4
5
6
7
8
9
10
11
A
B
C
D
E
F
G
H
I
J
3
1
2
IC101
81
4
5
1
3
C1/B2
C2
E1
B1
E2
B1
E2
IC201
R313
R103
C102
R102
C103
R105
R104
R106
C104
C109
R110
C107
R107
C105
R108
R109
C402
C403
R402
IC604
4
5
1
3
C621
C605
C604
1
2
3
IC307
C603
R608
C612
R604
C617
R606
C609
1
5
6
10
IC602
C616
R613
C613
R609
R307
R308
E C B
Q304
3
2
1
IC306
C608
R605
C611
R607
R603
FB601
C601
FB404
FB402
FB403
R401
R403
R602
R601
FB602
R616
IC603
4
5
1
3
X601
C112
C101
C108
C110
R111
C114
C113
R114
K
A
D313
L601
C405
C205
C203
R206
C204
R205
R208
R202
R203
R204
R201
C401
C404
C304
C305
R301
K
A
A
K
D302
D303
D304
D301
D305
C303
R210
R211
R212
E C B
E C B
Q602 Q601
D306
R219
R213
R214
R215
C202
C201
R207
R505
K
A
D501
C501
R305
R304
C307
C311
C308
R311
A
K
D310
K
A
D312
C320
C315
C301
C302
D314
R316
R312
K
A
D308
K
A
D307
R303
C306
R302
A
K
A
K
D311
R502
R501
R504
R503
C504
D502
R306
K
A
D309
A
K
K
A
A
K
A
K
A
K
K
A
A
X201
+
+
JACK FLEXIBLE
BOARD
1-664-796-
11
BLU
RED
7-7.
PRINTED WIRING BOARDS – MAIN Board (Component Side) –
•
See page 19 for Circuit Boards Location.
D301
F-3
D302
F-3
D303
F-3
D304
F-3
D305
F-3
D306
F-7
D307
H-4
D308
H-4
D309
F-2
D310
G-4
D311
H-5
D312
G-4
D313
D-3
D314
G-3
D501
G-8
D502
H-6
IC101
C-8
IC201
E-8
IC202
E-9
IC301
G-3
IC302
F-4
IC304
H-5
IC306
C-3
IC307
A-5
IC401
D-6
IC402
F-6
IC403
A-7
IC501
H-8
IC502
H-6
IC503
H-7
IC601
B-6
IC602
B-5
IC603
C-6
IC604
B-6
Q201
F-10
Q301
I-5
Q302
I-4
Q304
C-3
Q601
F-6
Q602
F-6
Q603
D-4
Q604
D-4
• Semiconductor
Location
(Component Side)
(Component Side)
Ref. No.
Location
(Page 20)
(Page 28)
23
23
CDX-838
(CHASSIS)
(CHASSIS)
RV202
ELEVATOR
HEIGHT SENSOR
RV201
UP
DOWN
SW201
MAGAZINE
DETECT
SW202
MAGAZINE
IN/OUT
DETECT
C321
+
C615
+
C614
+
C606
+
C319
+
C312
+
C318
+
C317
+
C314
+
C316
+
C309
+
Q303
Q305
SW301
Z
05
MAIN BOARD
(CONDUCTOR SIDE)
1-672-616-
12
(12)
1
2
3
4
5
6
7
8
9
10
11
A
B
C
D
E
F
G
H
I
J
(CHASSIS)
C503
+
C310
+
IC303
IC305
4
1
1
3
7-8.
PRINTED WIRING BOARD – MAIN Board (Conductor Side) –
•
See page 19 for Circuit Boards Location.
IC303
G-10
IC305
E-10
Q303
F-9
Q305
D-10
• Semiconductor
Location
(Conductor Side)
(Conductor Side)
Ref. No.
Location
24
24
CDX-838
7-9.
SCHEMATIC DIAGRAM – MAIN Board (1/3) –
•
See page 27 for Waveforms.
•
See page 30 for IC Block Diagrams.
ELEVATOR HEIGHT
(ADDRESS) ADJUSTMENT
(Page
21)
(Page 26)
(Page
25)
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