Sony CDC-R237 Service Manual ▷ View online
25
25
CDC-R237
4-8. PRINTED WIRING BOARD — MAIN SECTION — • Refer to page 21 for Circuit Boards Location.
(Page 23)
(Page 28)
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
14
C102
C108
C120
C121
C122
C113
C112
C109
C111
C702
C703
C115
C118
C103
C442
C444
C505
C516
C508
C506
C507
C852
C816
C808
C912
C811
C809
C913
C807
C806
C705
C706
C154
C156
C155
C152
C151
C123
C124
C104
C932
C930
C928
C927
C116
C934
C925
C924
C451
C452
C921
C929
C914
R101
R441
R442
R103
R102
R110
R109
R123
R120
R119
R714
R713
R717
R719
R721
R722
R723
R724
R725
R726
R112
R129
R118
R117
R116
R115
R108
R715
R716
R938
R946
R945
R811
R809
R808
R810
R801
R455
R453
R456
R454
C454
C453
R457
R936
R933
F901
C923
R919
R731
R926
R927
R925
R727
R728
R452
R729
R935
R451
R951
R950
R151
R106
R105
R104
R416
R439
R440
R503
R504
R508
R505
R501
R507
R502
R944
R125
R114
R506
R913
R510
R928
R912
R815
R906
D101
Q101
Q102
Q103
Q501
Q401
Q404
Q402
Q403
Q406
Q804
Q808
Q807
Q802
Q803
Q105
Q106
Q108
Q109
Q405
Q451
D451
D401
L701
R132
R130
R131
C403
C404
C407
C408
C409
C410
C411
C412
C413
C414
C418
R401
R402
R403
R404
R405
IC902
R949
R914
R904
Q502
R511
R406
R730
R910
R918
R947
R111
C509
R701
C401
C402
C405
C406
C501
C502
C503
C504
C515
C709
C710
C819
R107
R816
Q810
D903
R804
IC901
IC401
IC151
JR102
JR103
JR104
JR105
JR106
JR107
JR108
JR109
JR110
JR111
JR112
JR113
JR115
JR114
JR116
JR118
JR119
JR120
JR132
JR501
JR502
JR503
JR504
JR505
JR506
JR507
JR508
JR509
JR510
JR511
JR512
JR513
JR514
JR515
JR516
JR517
JR518
JR520
JR522
JR523
JR524
JR525
JR526
JR527
JR529
JR531
JR532
JR533
JR552
R905
JR101
R917
R929
C915
D913
JR117
JR521
JR528
JR534
C101
R415
Q801
Q809
Q805
Q806
L401
D713
D705
D707
D708
D709
D710
D711
D712
D151
D906
L702
L101
D907
L901
D801
R128
R121
R921
R922
R923
R924
R509
D805
D804
C105
C119
C125
C107
C110
C153
C157
C419
C431
C432
C433
C434
C510
C519
C805
C820
C708
R433
R434
R431
J401
AUDIO OUT
REAR
-1
-2
C415
R418
R803
R802
THP801
D513
R523
R931
R930
R932
D402
R122
JW101
JW102
JW103
JW104
JW105
JW106
JW107
JW108
JW109
JW110
JW111
JW113
JW114
JW115
JW116
JW117
JW118
JW119
JW120
JW121
JW122
JW123
JW124
JW125
JW126
JW127
JW128
JW129
JW131
JW132
JW133
JW134
JW135
JW136
JW137
JW138
JW141
JW142
JW143
JW144
JW145
JW146
JW147
JW148
JW149
JW152
JW154
JW155
JW156
JW157
JW158
JW159
JW160
JW161
JW162
JW163
JW167
JW168
JW169
JW170
JW171
JW174
JW175
JW176
JW177
JW183
JW184
JW185
JW186
JW187
JW188
JW189
JW190
JW191
JW192
JW193
JW194
JW195
JW196
JW197
JW198
JW199
JW200
JW201
JW202
JW203
JW204
JW205
JW206
JW207
JW208
JW209
JW210
JW212
JW213
JW214
JW215
JW216
JW217
JW218
JW219
JW220
R432
JW223
C933
D503
D504
D501
D502
D505
D506
D507
D508
D807
D808
JW230
JW112
JW140
JW139
R814
D806
D902
JW179
JW178
ANT101
CON702
CON701
IC501
L102
L851
SFR101
X901
X151
TU101
SW901
JW172
JW232
JW166
JW165
JW164
JW234
JW235
CON851
JW211
JW180
JW231
JW233
C416
C526
C707
C731
C804
C823
C417
C517
JW130
JW151
JW150
JW153
D851
L
R
C588
C586
C583
C581
C732
D101
C-1
D151
H-2
D401
D-3
D402
F-9
D451
D-7
D501
C-8
D502
C-8
D503
C-6
D504
C-6
D505
D-8
D506
D-8
D507
D-8
D508
D-8
D513
D-9
D705
I-2
D707
I-2
D708
I-3
D709
I-3
D710
I-3
D711
I-3
D712
I-3
D713
I-2
D801
H-11
D804
F-10
D805
E-10
D806
E-9
D807
E-11
D808
E-11
D851
B-10
D902
E-8
D903
G-9
D906
H-5
D907
C-9
D913
C-9
IC151
H-3
IC401
D-4
IC501
B-5
IC901
G-5
IC902
F-9
Q101
D-1
Q102
E-1
Q103
E-1
Q105
E-3
Q106
D-3
Q108
F-2
Q109
F-2
Q401
C-2
Q402
B-2
Q403
C-2
Q404
C-2
Q405
D-2
Q406
D-3
Q451
D-6
Q501
D-8
Q502
D-8
Q801
F-11
Q802
G-10
Q803
F-10
Q804
E-10
Q805
G-11
Q806
G-11
Q807
F-10
Q808
G-10
Q809
E-10
Q810
E-9
Ref. No.
Location
• Semiconductor Location
Ref. No.
Location
26
26
CDC-R237
• Refer to page 21 for Waveforms.
4-9. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) —
• Refer to page 30 for IC Block Diagrams.
(Page 24)
Note:
• Voltage is dc with respect to
ground under no-signal conditions.
no mark : FM
(
no mark : FM
(
) : MW/LW
<
> : CD PLAY
∗
: Impossible to measure
IC B/D
IC B/D
10k
100p
R731
JR505
JR506
JR507
JR525
JR526
JR534
JR104
C921
C923
C934
C928
C927
TP26
R101
D101
L101
R103
R123
R108
C108
JR116
C110
R107
JR522
JR518
JR112
C120
C122
C121
JR515
R128
R132
JR514
JR111
C104
C102
C103
R104
R106
R102
R109
R110
R131
R130
JR109
R111
R112
C115
JR114
JR516
JR517
R118
C123
R116
C118
R115
JR520
R117
CON701
JR119
R729
R730
R727
R728
C709
C710
TP10
TP9
TP22
TP21
C933
TP27
R938
C924
JR512
TP6
TP5
C124
R114
SFR101
R457
JR503
TP19
R456
R455
D451
C155
C157
R120
C113
C112
R119
C154
C111
C109
JR115
C151
C152
TP151
X151
R151
R451
C451
C401
R401
C403
C411
R403
R405
C415
C402
R402
TP1
R431
R433
TP3
R432
R434
TP4
JR509
C418
R418
R404
R406
JR508
JR504
TP17
TP14
R946
JR118
R927
R926
R925
R924
R923
R922
R921
R933
R947
JR531 R918
JR120
R945
Q806
R810
R808
C809
R816
R809
C811
JR105
X901
C925
C101
TP15
C107
R129
C105
R105
C153
JR523
C405
C407
C409
C413
C410
C406
C408
C412
C404
R454
R453 JR102
JR103
R452 C452
C453
C431
C433
C434
C432
R930
R931
R932
TP23
TP24
TP25
TP13
R935
R936
TP16
C119
JR510
R914
TP7
C929
R919
JR552
JR524
R511
C930
R951
R949
R950
JR533
JR532
ANT101
Q105
Q106
Q451
SW901
TU101
Q803
C454
JR117
R122
R121
JR108
L102
Q101
JR113
Q102
Q103
JR110
JR527
C156
IC151
D151
IC401
C414
C417
TP2
Q108
Q109
R125
D907
D906
D804
Q808
Q807
JR529
C116
C125
C731
IC901
C804
C732
(Page 27)
27
27
CDC-R237
4-10. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 30 for IC Block Diagram.
(Page 29)
(Page
26)
IC B/D
100p
100p
100p
100p
2SD601A
DTA114TKA
D501
D502
D503
D504
D505
D506
D507
D508
THP801
D806
L901
C816
R804
R904
D902
JR101
R811
R910
C705
C807
C806
C805
C820
R701
Q805
L702
D913
R912
JR528
C915
L851
D903
C913
R906
R803
R802
D808
D807
Q801
R801
C823
C808
Q809
R814
R815
JR501
C517
C516
C515
R944
R523
C419
D402
R415
C519
R509
Q405
C416
R416
D401
R440
JR502
JR513
JR107
JR106
R439
R441
R442
R503
R501
R504
R502
L401
R507
C503
R505
C501
C505
C507
C508
R508
C504
C502
R506
C506
C932
C510
IC501
C852
TP11
TP12
L701
R719
R721
R723
R722
R724
R725
R726
R717
R714
R713
C706
CON702
JR511
C509
R510
C526
C442
C444
TP20
JR521
C819
R905
C912
C703
R716
C702
R715
C707
F901
J401
Q810
Q802
C708
Q401
Q403
Q404
Q402
Q406
Q501
D513
Q502
D805
Q804
IC902
D801
D705
D707
D708
D709
D710
D711
D712
D713
CON851
D851
R929
R917
C914
R928
R913
C581
C583
C586
C588
Note:
• Voltage is dc with respect to
ground under no-signal conditions.
no mark : FM
(
no mark : FM
(
) : MW/LW
<
> : CD PLAY
∗
: Impossible to measure
28
28
CDC-R237
4-11. PRINTED WIRING BOARDS — FRONT SECTION — • Refer to page 21 for Circuit Boards Location.
(Page 25)
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
14
D641
D652
D671
D672
D673
D653
D651
D642
TP2
TP4
TP1
R651
R673
R603
C601
R641
R653
R610
Q671
R672
R605
C622
R662
R652
R622
R608
R654
R604
R602
R606
R609
R607
Q651
D601
R661
R601
R663
R621
D602
C923
C604
R674
Q661
C603
C605
C621
C602
CON601
S601
R671
JR642
R643
IC601
FMB5
FMB6
S611
S602
S608
S605
S612
S606
S615
S616
S618
S604
S617
S610
S614
S613
LCD601
D643
D661
S621
JR643
J601
Ref. No.
Location
D601
G-6
D602
G-6
D641
A-1
D642
A-12
D643
F-5
D651
C-12
• Semiconductor Location
Ref. No.
Location
D652
C-4
D653
C-2
D661
G-4
D671
C-12
D672
C-4
D673
C-2
Ref. No.
Location
IC601
G-8
Q651
F-9
Q661
G-5
Q671
F-9
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