Read Sony CDX-A251C Service Manual online
24
24
CDX-A251C
CDX-A251C
3-8. PRINTED WIRING BOARD — MAIN SECTION — • Refer to page 16 for Circuit Boards Location.
: Uses unleaded solder.
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
14
RESET
BUS AUDIO IN
-1
L
-2
R
AUDIO OUT
REAR/SUB
-3
L
-4
R
(ANTENNA)
9K
10K
FREQUENCY
SELECT
AEP,UK MODEL
US,CND,E,MX MODEL
1-726-891-
11
(11)
Q651
R528
D1
C6
R2
R3
C2
C1
Q22
R29
R582
D580
R651
D651
R609
D609
Q580
D581
R583
R532
R531
JC753
C343
R534
R756
C7
C769
R1
C404
C405
C756
Q1
R537
R538
L1
IC401
R544
R507
R545
-2
-1
R546
C53
C54
C55
C56
C57
C58
C59
C60
C62
R51
R52
R53
R54
R55
R56
R57
R58
R548
C763
D719
R4
R5
R6
R7
R8
R9
R557
R551
C617
C618
C764
C765
C751
C750
C602
C12
C13
R59
Q51
R60
R61
R301
R302
C306
C308
C309
C310
FB603
FB605
FB604
R652
C771
R573
FB1
FB309
FB305
FB303
FB307
FB308
C484
C474
JC754
JC755
D511
FB562
FB563
C312
L51
R570
R12
R13
FB310
C774
YEL
YEL
C775
R575
R577
R566
JC756
R539
R675
R676
R677
R681
D617
R661
R662
R663
R664
R757
C561
D582
D583
C582
R590
D584
Q587
Q586
R591
R506
C330
C331
IC901
R901
R902
R903
R904
R905
R906
R907
R910
C901
C902
C905
IC51
R911
JC795
C917
C918
D903
R912
AEP,UK MODEL
AEP,UK
MODEL
MODEL
AEP,UK,E,MX MODEL
AEP,UK
MODEL
MODEL
US,CND,
E,MX
MODEL
E,MX
MODEL
R913
R914
C911
C912
R335
C555
C556
C462
C432
R431
C452
R451
Q451
R452
R462
C442
R432
R442
Q471
Q441
Q431
JC752
R482
Q461
R461
R441
R471
R481
Q481
R472
R331
R330
R332
JC1
R333
AEP,UK
MODEL
MODEL
JC402
JC403
R401
R405
C413
R406
R408
R407
R409
R409
R411
R410
C755
R752
Q479
C776
Q478
D479
R479
C681
C682
IC681
IC602
FB304
L301
FB302
R654
R653
C770
R509
L501
C510
R508
C508
C507
R533
R529
R518
D502
R568
US,CND,
E,MX MODEL
E,MX MODEL
US,CND
MODEL
MODEL
AEP,UK,
E,MX
MODEL
E,MX
MODEL
AEP,UK,
E,MX
MODEL
E,MX
MODEL
AEP,UK
MODEL
MODEL
C509
R517
Q664
R561
JC501
C514
C502
R558
R565
R567
C512
C501
C513
C516
JC504
R503
D501
R671
R514
R513
R505
R504
R502
R522
R521
R510
FB501
C504
R511
R512
R632
R634
R633
Q631
R584
R673
R563
R578
FB606
R581
R588
R587
R580
IC580
C580
JC502
R678
JC527
R555
D510
R554
R679
D512
R672
R519
R674
R691
R542
R692
R564
R636
R547
R553
R556
R543
C519
R601
C410
C411
FB410
FB411
C435
C445
C455
C465
R694
IC
501
JW
10
JW
11
JW
12
JW
13
JW
29
JW101
R631
JW
104
JW
105
C431
C461
C451
C3
C401
S702
C301
C302
C601
TU1
X51
X502
C758
C441
D757
D759
D760
D601
C631
JW9
D758
C754
D754
C407
C406
JW1
JW2
JW95
JW96
JW97
C305
JW91
JW115
C471
C481
JW
131
JW
132
D756
C753
C479
C412
C4
C5
C51
C511
C503
D761
D762
S502
E,MX MODEL
AEP,UK
MODEL
MODEL
AEP,UK
MODEL
MODEL
US,CND
MODEL
MODEL
US,CND,
E,MX
MODEL
E,MX
MODEL
US,CND,
AEP,UK
MODEL
AEP,UK
MODEL
AEP,UK,
E,MX
MODEL
E,MX
MODEL
JW3
JW109
JW144
JW
145
JW
146
L601
CNP301
JW
142
JW
143
JW93
JW16
JW14
JW17
JW
56
JW
50
CN601
JW120
JW
118
C623
JW18
JW82
JW
75
JW
149
JW
45
JW
125
X501
JW
6
JW
8
JW
137
JW
7
JW
30
JW
99
JW
28
JW117
JW62
JW100
JW
66
JW20
JW
60
JW44
JW88
JW
42
D753
D752
D751
JW
26
JW
71
JW
76
JW80
JW
108
JW
54
JW89
JW
103
JW
69
JW
40
JW
67
JW
86
JW
68
JW
74
JW
133
JW
126
JW154
JW155
JW
70
JW83
JW121
JW122
JW84
JW21
JW148
J330
JW15
JW
24
JW
23
JW
25
JW153
JW106
JW156
JW43
C581
TH580
CN580
J561
(BUS CONTROL IN)
JW36
JW37
JW116
JW41
JW134
JW32
JW31
JW
49
JW
48
JW
51
JW
53
JW
52
JW
127
JW119
JW65
JW87
JW
63
JW
163
JW
102
JW
141
JW
140
JW
160
JW
161
JW
162
JW81
JW129
JW130
JW128
JW150
JW72
JW124
JW
166
JW
167
JW123
JW
47
C683
JW168
JW
94
JW
169
JW111
JW39
JW92
JW27
CN701
JW139
JW138
C402
C403
JW
403
JW
164
JW
404
JW
165
JW85
JW90
C903
C752
JW
171
JW
172
D755
IC750
(REMOTE IN)
J1
FU601
(Page 21)
(Page 29)
Ref. No.
Location
• Semiconductor Location
D1
F-3
D479
E-6
D501
I-5
D502
I-7
D510
H-8
D511
F-6
D512
I-8
D580
F-11
D581
F-11
D582
F-11
D583
F-11
D584
G-11
D601
C-10
D609
D-8
D617
C-9
(D651)
C-9
D719
J-4
D751
D-7
D752
D-7
D753
D-7
D754
D-7
D755
C-8
D756
C-6
D757
C-6
D758
C-6
D759
D-8
D760
D-8
D761
D-9
D762
D-9
D903
I-3
<IC51>
H-2
IC401
E-4
IC501
H-6
IC580
H-10
IC602
I-9
IC681
E-7
IC750
B-6
IC901
H-2
Q1
F-2
<Q22>
E-2
<Q51>
G-2
Q431
C-4
Q441
C-4
Q451
C-4
Q461
D-4
Q471
C-3
Q478
E-6
Q479
E-5
Q481
C-3
Q580
F-11
Q586
G-11
Q587
G-11
Q631
H-10
(Q651)
D-8
Q664
I-7
Ref. No.
Location
( ) : AEP, UK, E, MX model
< > : AEP, UK model
< > : AEP, UK model
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