Sony CDX-GT28M Service Manual ▷ View online
CDX-GT28M
CDX-GT28M
17
17
1
A
B
C
D
E
F
G
H
I
2
3
4
5
6
7
8
9
10
11
12
13
A
KEY BOARD
CN901
IC681
IC401
IC501
IC750
JW148
Q478
Q479
R509
R513 R514
C504
C508
C507
R510
R511
R512
R528
C413
C501
R503
R582
D580
R632
R634
R633
Q631
R636
Q580
R521
R522
D581
R583
R532
R531
C343
R671
R534
R756
C755
R752
R479
C770
C756
FMB3
FMB4
R504
R505
R505
R673
C510
C512
C513
C514
R461
R451
C763
D719
R563
C617
C764
C765
C751
C602
R301
R302
C306
C308
C309
C310
C771
JC754
JC7
55
R533
D512
R431
Q431
R441
R442
C312
R561
R570
C519
R502
R462
R452
R40
1
D502
R519
C774
C775
R539
R677
D617
R661
R662
R663
R664
C776
C435
C455
C465
C445
C442
C432
C432
C452
C462
C769
D704
C522
C523
R153
R154
R155
R481
R482
R472
D153
C154
C155
R152
L151
C618
C454
C464
-1
-2
L
R
AUDIO OUT
REAR/SUB
C681
C682
C750
Q471
R471
Q481
Q441
Q451
Q461
D479
R542
C157
C502
JC580
JC301
JC302
FB308
FB309
D511
JC501
C631
C632
JC303
Q582
Q581
R556
R558
R535
R536
R551
R538
R538
R506
R507
R690
R574
R575
R575
R537
R546
R413
R414
C404
C405
R584
R674
C50
9
FB604
IC602
R565
R567
R601
1
2
4
3
R54
3
R679
R547
JC533
R540
R541
R585
R672
D510
R578
R675
R676
1
8
R523
R566
R526
R693
R692
JC502
JC503
C408
C409
JC151
FB401
FB402
C705
C706
C707
C708
C709
C719
R508
C551
D701
D702
D703
R529
R530
R631
R635
C1
C12
IC1
C5
R3
VDR1
R1
C6
C7
C8
C9
C16
C17
C18
C19
C20
C21
C22
C23
C23
C24
C25
C26
C27
R11
R13
R14
R10
R6
C13
R2
R12
C2
C3
R4
R5
FB1
FB2
R432
C520
C521
JC521
FB561
FB562
FB563
FB312
FB311
FB304
R550
R501
C601
D760
D601
D754
D75
5
D756
D762
L601
CNP301
CN601
FU601
X501
D75
3
CN701
JW89
JW22
JW3
JW93
JW18
JW1
JW2
JW9
JW45
C441
C431
(CHASSIS)
(CHASSIS)
C45
1
C461
C401
C753
C75
8
C47
9
C302
C301
C30
5
C48
1
C47
1
C15
1
C15
2
JW139
C623
C62
2
JW2
0
C683
JW1
32
JW131
JW19
D761
D759
JW35
JW38
JW142
C153
J561
(REMOTE IN)
JW21
JW5
JW10
JW88
JW97
JW95
S702
JW98
JW14
JW15
JW16
JW3
4
JW30
JW11
JW12
JW13
JW68
JW133
JW74
JW7
1
JW40
JW1
08
JW79
JW149
JW151
JW156
JW155
JW67
JW83
JW150
JW86
JW141
JW115
JW2
7
JW9
9
JW2
8
JW106
JW118
JW154
JW48
JW42
JW26
JW25
JW1
03
JW5
6
JW5
4
JW73
JW24
JW2
9
JW124
JW135
JW1
04
JW1
05
JW96
JW92
JW33
JW37
JW120
JW90
JW109
JW39
JW111
JW31
JW136
JW4
JW1
7
JW7
JW6
JW8
JW32
JW100
JW101
JW121
JW122
JW157
JW158
JW159
JW160
JW161
JW129
JW130
JW91
JW80
JW76
JW69
JW78
S502
S502
FREQUENCY
SELECTOR
J561
C752
JW140
JW75
JW36
JW5
5
JW62
JW63
C503
JW8
2
JW65
JW167
JW166
JW59
JW49
JW47
JW85
JW84
JW94
JW152
JW50
CN35
1
JW57
JW146
JW175
JW176
JW174
X502
C407
C406
C754
C412
C761
JW23
JW178
JW102
JW137
JW138
L6
X1
C28
L7
L8
JW147
L1
JW126
L3
L2
L4
JW51
JW66
JW153
J330
J1
(ANTENNA)
X501
CD
MECHANISM
UNIT
(MG-101L)
S702
RESET
1-877-020- (11)
11
10k
9k
4-3. PRINTED WIRING BOARD – MAIN SECTION –
: Uses unleaded solder.
(Page 21)
Ref. No. Location
• Semiconductor Location
Ref. No. Location
D153
H-2
D479
E-5
D502
I-6
D510
F-6
D511
F-5
D512
E-8
D580
D-9
D581
D-9
D601
C-9
D617
C-8
D701
H-3
D702
H-3
D703
H-3
D704
H-3
D719
I-4
D753
C-6
D754
C-6
D755
C-6
D756
C-6
D759
C-7
D760
C-7
D761
C-8
D762
C-8
IC1
E-2
IC401
E-3
IC501
G-6
IC602
H-7
IC681
E-6
IC750
B-6
Q431
B-4
Q441
B-3
Q451
C-4
Q461
D-4
Q471
B-3
Q478
E-5
Q479
D-5
Q481
C-3
Q580
D-9
Q581
E-10
Q582
F-10
Q631
D-8
CDX-GT28M
CDX-GT28M
18
18
IC B/D
L601
R633
R632
R634
R583
C683
JW63
R584
C753
R752
C758
C761
C754
C503
R601
R585
C631
C602
C601
C617
C618
R635
R631
C519
C682
C751
C771
C776
C775
C765
C774
C764
JC755
C755
FU601
C769
C770
C750
C752
C763
D754
D75
3
D762
D756
D755
D76
1
D760
D759
C632
C681
FB604
JC502
FB563
FB561
FB562
FB561
FB562
C756
IC602
Q582
Q631
J561
CN601
D617
D601
Q580
D581
IC681
IC750
R541
R540
C622
C623
Q581
D580
R582
JC754
4-4. SCHEMATIC DIAGRAM – MAIN SECTION (1/3) –
• See page 23 for IC Block Diagrams.
(Page 20)
(Page 19)
CDX-GT28M
CDX-GT28M
19
19
IC B/D
IC B/D
C401
R153
R151
R152
R155
L1
X1
JC151
Q451
R479
C412
C431
C451
C441
C461
R451
R461
R432
R452
R442
R462
R401
C481
C471
R481
R471
R482
R472
Q471
Q481
R1
C28
L3
C3
R413
R414
C464
C454
C413
C551
C709
C719
C155
C154
C157
L151
C408
C409
C405
C26
C18
C17
C9
C22
C21
C12
C5
C7
C8
C1
Q478
Q479
C479
C455
C465
C452
C462
C153
C151
C152
R154
C404
C13
R4
R5
C16
R10
L4
C2
R2
R14
R13
C27
R12
C20
L7
L8
C23
C24
C25
R11
CN701
C705
C706
C707
C708
C407
C406
C442
C445
C432
C435
R6
L6
C19
FB401
FB402
J1
D479
D511
VDR1
D719
D704
D703
D702
D701
J330
Q461
Q441
Q431
R441
R431
IC1
D153
IC401
C6
FB1
FB2
L2
R3
4-5. SCHEMATIC DIAGRAM – MAIN SECTION (2/3) –
• See page 16 for Waveform. • See page 24 for IC Block Diagrams.
(Page 22)
(Page 20)
(Page 18)
CDX-GT28M
CDX-GT28M
20
20
R672
R673
R512
R511
R510
C301
C305
C302
R57
0
R513
R532
R550
R537
R505
R567
R565
R561
R578
R679
R662
R663
R664
R690
R54
2
JC501
JC302
JC301
CN351
JC503
R530
JW69
JW83
JW67
R756
R502
R533
R519
R566
R539
R543
R675
R676
R676
R677
R526
R529
R535
R506
R546
S502
JC533
C343
C312
C306
C309
C310
C308
C523
C522
C502
C513
C507
C508
C509
FB312
FB308
FB311
FB309
R528
FB304
R301
R302
R503
R671
C501
C512
C514
R507
R574
C504
R692
R523
R556
R63
6
R53
1
R53
4
R563
R536
R514
R547
R509
C510
C52
0
C52
1
JC521
R521
R522
R558
X501
CNP301
JC303
D512
D510
R508
R501
R674
X502
D502
R504
R661
IC501
4-6. SCHEMATIC DIAGRAM – MAIN SECTION (3/3) –
• See page 16 for Waveforms. • See page 26 for IC Pin Description of IC501.
(Page 19)
(Page 18)
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