Sony CDX-CA720X Service Manual ▷ View online
21
21
CDX-CA720X
3-8. SCHEMATIC DIAGRAM — MAIN SECTION (1/3) — • Refer to page 31 for IC Block Diagrams.
(Page 22)
(Page 23)
Note:
• Voltage is dc with respect to ground under
no-signal (detuned) condition.
no mark : FM
(
no mark : FM
(
) : AM
IC B/D
C14
C16
C306
C307
C307
C335
IC331
R14
R31
R32
R41
R330
R332R333
R334
R335 R336
R338
R339
R340 R341
R343
R344
R345
C11
C15
C17
C33
C32
C31
C41
C42
C337
C338
C336
C330
C331
C333
C341
C344
C343
C342
C10
C13
C141
C241
C339
C340
R337
J10
C334
R10
R13
IC332
IC333
TU10
R29
R28
C53
C999
R170
R180
R270
R280
C57
22
22
CDX-CA720X
3-9. SCHEMATIC DIAGRAM — MAIN SECTION (2/3) — • Refer to page 32 for IC Block Diagram.
(Page
21)
21)
Note:
• Voltage is dc with respect to ground under
no-signal (detuned) condition.
no mark : FM
(
no mark : FM
(
) : AM
(Page23)
IC B/D
IC B/D
C752
D721
D722
D723
D724
D731
D732
D733
D734
D781
IC601
L781
R571
R572
R573
R574
R575
R576
R588
R589
R590
R591
R622
R751
R752
R753
R754
R782
R690
C753
F901
C551
C615
C187
C573
C571
C177
C757
C756
C279
C287
R787
R610
C786
C784
C781
IC751
C278
C188
C288
C288
C178
C142
C242
R143
R243
R243
R142
R242
C614
C613
C611C610
C755
C785
C783
C782
D625
R629
C623
Q621
Q622
D621
PJ151
D614
D611
D613
D612
C612
Q571
Q585
D552
R616
CNP781
D782
R276
R286
R176
R186
R285
R175
R275
R185
Q271
Q281
Q171
Q181
R627
Q611
R619
R618
Q612
C616
D998
R432
R431
R431
R430
R429
R429
IC407
C272
C982
C172
C983
C182
R433
C400
R434
R435
C406
C407
C409
C404
C273
R274
C283
R284
R174
C173
C183
R402
R184
R459
C274
C284
R457
C411
C174
R455 R454
C184
R451
R449
R450
R403
R404
C277
R281
Q275
C276
R283
R279
Q285
Q175
Q185
C292 R291
R293
C286 R289
C185 R181
C176
C186
R179
R183
R193
C192
R191
R189
C282
C981
C984
C405
C401
R452
R465
R466
R461R463
IC408
IC409
C410
R621
C621
D490
C490
R490
C627
Q625
R691
R436
R612
C993
C991
R577 R578
23
23
CDX-CA720X
• Refer to page 17 for Waveforms.
3-10. SCHEMATIC DIAGRAM — MAIN SECTION (3/3) — • Refer to page 32 for IC Block Diagram.
Note:
• Voltage is dc with respect to ground under
no-signal (detuned) condition.
no mark : FM
(
no mark : FM
(
) : AM
<
> : CD PLAY
(Page20)
(Page22)
(Page21)
(Page27)
IC B/D
2
C352
D581
R350
R351
R352
R353
R354
R500
R509
R510
R510
R511
R517
R519
R524
R525
R531
R532
R541
R551
R557
R562
R563
R564
R585
R631
R632
R633
R634
R710
R711
R711
R712
R713
R714
R715
R719
R725
R726
R727
R727
R728
R729
R729
R730
TH501
X502
R357
R724
R723
R720
R566
R538
R536
R512
C350
C351
C353
C354
C501
C511
C513
C581
R716
R514
R513
C303
C302
C305
C301
R583
R584
R526
R527
C504
C505
R501
C510
C514
R502
R505
R504
R506
R529
R528
R503
C507
R515
C506
R556
R592
R507
R702
R701
S552
S551
J561
R521
R12
CNP301
R355
CNJ581
IC551
CN701
Q352
Q353
Q581
IC581
X501
Q551
D553
D702
D701
Q603
Q601
Q631
R508
C703
R615
D351
D352
D585
D584
D582
IC501
D
703
R721
R722
R722
Q350
Q351
D350
L901
L902
R356
R555
R558
R558
R559
R542
R543
R561
R601
R604
R607
R635
C620
R620
D650
D651
Q650
Q613
R650
D712
D710
D711
R586
D999
Ver 1.1
24
24
CDX-CA720X
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
D710
D711
D712
R711
R710
R719
R712
R713
R526
R527
R715
R714
D782
C784
C785
C786
D613
D614
D611
D612
R575
R576
R584
R583
Q581
D585
R586
R585 D584
D581
D582
D552
R591
R590
R589
R588
Q585
R573
R572
R571
Q571
R574
C354
D351
D352
Q353
Q352
R352
R353
R354
R350
R351
C351
D350
Q350
C350
C353
Q603
Q601
Q631
R631
R632 R633
IC551
C506
R551
R557
Q551
R541
R507
R507
R555
R517
R519
R524
R525
R521 R556
R501
C501
R512
R513
R514
C507
R511
R510
R509
R504
R505
R506
R528
R529
C504
C505
C511
R502
R500
R561
D553
R751
R752
R508
R564
R563
R515
R503
R753
Q622
Q621
R622
D621
R754
C755
D733
D723
D734
D724
D722
D721 D731
C336
C33
R32
C32
C31
R31
C331
C330
R330
R41
C344
R340
R341
R339
C342
C340
C341
R337
R338
R343
R344
R332
R333
R333
R334
R335
R336
C343
C337
C339
C338
IC332
IC333
C333
R29
R274
R275
Q271
R284
R285
Q281
R142
R143
R243
R242
R174
Q171
R175
R184
Q181
R185
R189
R179
R289
R279
C279
C287
C177
C187
C10
C11
C15
C17
R10
IC581
R616
R531
R532
C13
R12
C581
D732
IC331
C513
C514
R13
R14
C176
C286
C276
C782
C783
C188
C242
C142
R280
R270
R180
R170
R538
R592
IC501
C277
C192
R191
C185
R181
R357
R356
R355
R702
R701
R276
R176
R286
R186
R431
R433
R435
R543
R542
C571
D701
D702
C757
C756
R634
R716
R562
C42
C41
R345
Q175
Q275
R281
R283
C274
R459
R457
C284
R466
R465
R450
R449
C184
R451
R452
C174
R454
R455
Q185
Q285
C292
R291
R293
R193
IC408
IC409
R183
IC407
R436
R434
R432
R430
C401
C405
C406
R429
R403
R402
R404
R490
D490
R721
R723
R725
R727
R729
R726
R728
R730
R724
R722
R720
R558
R559
R536
Q650
D651
D650
C620
Q613
Q611
R619
Q612
R618
R612
R620
R621
R782
R787 D998
R610
R461
R463
R607
R604
R601
C573
C411
C410
C627
R690
D703
R28
C703
R629
D625
Q625
R615
R627
R650
R566
R635
L901
L902
C999
C983
C991
C993
C982
C984
C981
R691
C621
C186
C278
C178
C288
C53
C57
D999
R577
R578
3-11. PRINTED WIRING BOARD — MAIN SECTION — • Refer to page 17 for Circuit Boards Location.
D350
G-10
D351
G-9
D352
G-9
D490
E-5
D552
F-9
D553
G-7
D581
D-9
D582
D-9
D584
E-9
D585
E-9
D611
F-8
D612
F-9
D613
E-9
D614
E-8
D621
D-7
D625
D-7
D650
H-8
D651
H-9
D701
I-3
D702
I-3
D703
I-3
D710
I-2
D711
I-2
D712
I-2
D721
D-7
D722
D-7
D723
C-7
D724
C-7
D731
C-6
D732
D-7
D733
C-7
D734
C-7
D782
D-8
D998
D-8
D999
E-9
IC331
F-4
IC332
F-5
IC333
F-5
IC407
D-4
IC408
C-5
IC409
D-5
IC501
H-6
IC551
I-9
IC581
D-9
Q171
C-4
Q175
D-6
Q181
C-3
Q185
D-6
Q271
C-4
Q275
C-5
Q281
C-3
Q285
C-6
Q350
H-10
Q352
G-9
Q353
G-9
Q551
H-4
Q571
G-8
Q581
E-9
Q585
F-8
Q601
H-9
Q603
H-9
Q611
F-10
Q612
F-10
Q613
F-9
Q621
D-7
Q622
D-7
Q625
D-6
Q631
I-9
Q650
H-9
Ref. No.
Location
• Semiconductor Location
Ref. No.
Location
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