Sony ICF-CD523 Service Manual ▷ View online
ICF-CD523
17
17
ICF-CD523
•
Note For Printed Wiring Boards and Schematic Diagrams
Note on Schematic Diagram:
•
All capacitors are in
µ
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
•
All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
5
: fusible resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
•
Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
under no-signal (detuned) conditions.
no mark : FM
(
) : AM
[
] : CD PLAY
•
Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
•
Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
Voltage variations may be noted due to normal produc-
tion tolerances.
•
Circled numbers refer to waveforms.
•
Signal path.
F
: FM
f
: AM
J
: CD PLAY
•
Abbreviation
CND : Canadian model
CND : Canadian model
Note on Printed Wiring Board:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
W
: indicates side identified with part number.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
•
: Carbon pattern.
(The other layers' patterns are not indicated.)
•
Circuit Boards Location
SECTION 6
DIAGRAMS
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
KEY (F) board
KEY (P) board
LCD board
LOADING board
TRANS board
MOTOR board
MAIN board
VOLUME board
Ver. 1.1
ICF-CD523
18
18
ICF-CD523
R704
C705
C702
C593
R595
R596
R593
C592
C457
C429
C458
R461
C430
C456
C447
C446
R479
R473
R477
R475
R481
R401
R404
R406
R407
R408
R409
R410
R411
R412
R413
R414
R415
R416
R417
R418
R419
R420
R421
R422
R423
R424
R425
R432
R430
C411
R435
C410
R434
C413
R437
C418
R449
R450
R451
R452
R453
C449
R454
R455
R456
C419
C421
C422
R484
R458
R459
R460
R462
R463
R464
R465
C426
C427
C428
C435
C434
C433
C436
R307
R466
JC402
JC403
R530
C534
R532
R531
C53O
R523
R528
R527
R525
R524
R526
C522
R519
R518
R521
C525
C527
C518
R517
C517
C516
C514
C523
C556
R555
R556
C520
C519
R514
R516
JC503
C537
C539
C531
C529
C532
C535
C501
C503
R503
R502
R501
C505
C510
R506
C588
C512
R591
R592
R597
JC502
C504
R504
C506
C591
C509
C508
R505
R508
C513
R513
C585
R561
C560
R560
C562
C902
C901
C563
C561
R562
R563
R564
R559
R594
C557
R557
R579
R558
C587
C558
JC504
C598
C564
C565
R565
R903
R901
R902
C908
C912
C352
C224
C124
C364
C366
R152
R352
R256
C362
R906
R915
R916
R914
C123
C223
R308
R112
R114
R214
R212
C102
C109
C209
C222
C122
JC201
C202
R127
R227
R211
C204
C203
R213
C206
R210
C208
C359
R355
R207
R66
R919
R920
C918
C307
C921
JC902
R909
JC901
C917
C914
C367
C357
C363
R353
R156
R351
R253
R153
C351
R354
R251
R254
R205
R105
R154
R252
C251
C151
R151
C905
C906
C907
R512
R509
R510
C502
C528
R529
C444
C441
C439
R457
R467
R443
R448
R447
R446
C416
R445
R444
R438
R442
C412
R436
JC401
C414
R441
R439
R433
R426
R427
R428
R429
R431
R402
R403
C406
R405
C405
C404
C403
C401
R511
R55
R56
R12
R14
R11
R8
R3
R6
R4
C953
R16
R23
C22
C16
R13
R22
R580
R54
R51
R53
R63
R64
R65
R52
C55
C56
R61
R60
C63
C61
C52
C66
C4
D3
C3
C2
C1
C69
C8
C9
C11
JC1
R2
R1
R5
C13
R7
C54
C12
R62
C68
C57
C58
C59
C19
C33
C26
C67
C24
R15
R301
R302
R522
R520
R515
C586
C555
C553
C552
R578
JC553
C538
C578
C581
JC501
C551
C583
C582
C569
JC552
C579
C575
C574
C571
C568
C567
C573
JC554
C570
R570
R569
R568
R566
JC551
C554
R551
R552
R553
C577
R574
R575
R576
R572
R554
C301
R303
R17
C28
C29
C31
C30
R19
C64
R478
R476
R474
R482
R480
C703
C704
R701
R702
R703
R705
L701
D701
JW711
JW710
JW709
JW708
JW707
JW706
JW705
JW704
JW442
JW443
JW447
JW444
JW441
JW440
JW439
JW438
JW437
JW436
JW434
JW435
JW446
JW431
JW421
JW423
JW420
JW419
JW418
JW417
JW415
JW414
JW413
JW416
JW412
JW409
JW408
JW407
JW402
JW406
JW405
JW509
JW510
JW422
JW411
JW404
JW403
JW401
JW410
JW433
JW432
JW701
JW13
JW17
JW23
JW22
JW15
JW12
JW11
JW10
JW14
JW702
JW703
JW445
E C B
Q302
JW429
JW424
JW508
JW427
JW426
JW501
JW502
JW503
JW504
JW428
JW21
JW20
JW19
JW18
JW425
JW430
L401
D401
JW506
JW505
JW520
JW521
JW519
JW507
JW9
JW8
JW7
JW25
JW26
JW16
JW24
JW528
JW533
JW532
JW531
JW907
JW908
JW530
JW536
JW539
JW540
JW538
JW319
JW529
JW535
JW534
JW523
JW537
JW522
JW524
JW27
JW525
JW526
JW527
JW5
JW6
D2
A
K
A
K
K
D4
E
C
B
Q5
L301
JW511
JW512
JW513
JW516
JW517
JW515
JW514
JW518
JW541
JW906
E
C
B
Q51
E C B
Q52
D301
D501
D302
D903
D904
D901
D902
D908
D907
D905
D906
JW904
JW301
JW302
JW303
JW312
JW313
JW314
JW316
JW317
JW320
JW311
JW307
JW306
JW305
JW308
JW304
JW909
JW310
JW309
D351
D909
JW315
JW321
JW911
JW912
E C B
Q202
E C B
Q201
E
C
B
Q103
E C B
Q203
E C B
Q102
E C B
Q101
C120
C220
JC101
C103
C105
R108
C108
R202
R204
R106
R102
R104
R206
R101
R201
R107
R111
C104
C106
R110
R305
R306
R208
C205
R209
R109
R113
JW322
JW325
JW329
JW330
JW326
JW327
JW328
JW318
R907
R904
D910
E C B
Q104
E
C
B
Q204
JW323
JW4
JW324
JW3
C304
+
C119
+
D303
C219
+
C303
+
C305
+
C919
+
C915
+
C916
+
C356
+
C152
+
C358
+
C353
+
C252
+
C255
+
C155
+
4
1
5
8
IC301
Q902
Q901
CN301
1
4
L902
L901
KH901
1
2
C913
+
C910
+
C911
+
C566
+
C559
+
C909
+
C580
+
C584
+
C515
+
C524
+
C511
+
C507
+
C533
+
C521
+
1
48
12
13
24
25
36
37
IC501
C526
+
Q501
Q301
CN501
1
2
15
16
1
21
40
41
60
61
80
20
IC401
X401
X402
C431
+
C445
+
C402
+
IC402
C407
+
CN405
1
2
21
22
C595
+
C594
+
C701
+
C15
+
C17
+
C18
+
C20
+
C53
+
C51
+
C65
+
C27
+
C25
+
C23
+
CF2
CF3
BPF1
CT2
L3
C302
+
CN303
1
7
IC351
1
12
CT1
L1
L4
L2
CF1
RV1
9
1
16
8
IC51
X51
C70
1
15
30
16
IC1
1
28
15
14
IC591
IC701
C596
+
1
1
2
9
8
9
W701
1
5
CN503
6
1
CN401
T1
21
20
40
41
60
61
80
1
IC551
MAIN BOARD
1-869-414-
(11)
11
BP502
BP501
C599
SP201
(L-CH FRONT SPEAKER)
SP101
(R-CH FRONT SPEAKER)
A
K
K
AM FERRITE-ROD
ANTENNA
B. P. F.
VOLUME BOARD
W301
B
MOTOR
BOARD
W501
F
LOADING
BOARD
CN701
E
KEY (P)
BOARD
BOARD
CN402
D
LCD
BOARD
CN406
C
1
3
A
A
K
TP
(VT)
TP
(STVCO)
TP
(TU-+B)
TP
(FEG)
TP
(FMIN)
OPTICAL PICK-UP BLOCK
(KSS-213C)
TRANS
BOARD
BOARD
CN901
A
BP1
TP568
(GND)
(GND)
BP505
BP403
(CD TEST MANUAL)
BP404
(CD TEST AUTO)
BP405
X501
TP513
(RF)
A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
K
(US, CND)
(US, CND)
(US, CND)
(US, CND)
(AEP)
(AEP)
•
Semiconductor
Location
Location
Ref. No. Location
D2
J-8
D3
J-9
D4
J-8
D301
F-7
D302
E-6
D303
H-3
D351
E-3
D401
F-12
D501
F-8
D701
H-14
D901
B-4
D902
B-5
D903
B-4
D904
B-4
D905
B-4
D906
A-4
D907
B-4
D908
B-4
D909
G-2
D910
H-2
IC1
I-9
IC51
J-10
IC301
I-5
IC351
D-1
IC401
D-13
IC402
F-12
IC501
C-9
IC551
C-6
IC591
H-13
IC701
H-14
Q5
G-7
Q51
K-11
Q52
J-11
Q101
H-4
Q102
G-4
Q103
H-6
Q104
H-3
Q201
H-5
Q202
G-5
Q203
I-6
Q204
I-3
Q301
F-6
Q302
D-11
Q501
E-8
Q901
G-1
Q902
H-1
6-1. PRINTED WIRING BOARD – MAIN Section –
•
See page 17 for Circuit Boards Location.
: Uses unleaded solder.
(Page 24)
(Page 24)
(Page 19)
(Page 19)
(Page 24)
(Page 24)
Ver. 1.1
ICF-CD523
19
19
ICF-CD523
1
2
7
8
CN404
CD PLAY MODE
S411
S410
RADIO ON
BAND
OFF/ALARM RESET
x
S407
S402
S401
OPEN/CLOSE
Z
S416
CD
u
S405
KEY (F) BOARD
1-869-420-
(11)
11
TUNER/TRACK/TIME SET
–
.
+
>
R486
D402
LCD401
20
1
1
2
22
21
CN406
1-869-415-
(11)
11
CN402
1
9
8
2
CN403
1
7
8
2
S414
ALARM
ON/OFF
ON/OFF
S413
ALARM
CLOCK
S406
D.S.T.
SUMMER.T
S415
S403
S408
S412
S404
S409
KEY (P) BOARD
LCD BOARD
1-869-418-
(11)
11
MAIN
BOARD
CN405
C
LIQUID CRYSTAL DISPLAY
(LCD BACK LIGHT)
S403
S408
S412
S404
S409
SELECT / PRESET
PRESET TUNING
1
2
3
4
5
MAIN BOARD
CN401
D
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
6-2. PRINTED WIRING BOARDS – PANEL Section –
•
See page 17 for Circuit Boards Location.
: Uses unleaded solder.
(Page 18)
(Page 18)
ICF-CD523
20
20
ICF-CD523
6-3. SCHEMATIC DIAGRAM – MAIN Section (1/4) –
•
See page 25 for Waveforms.
•
See page 30 for IC Pin Function Description.
R420
R421
R422
R423
R424
R425
R426
R427
R428
R429
R430
R431
R432
R433
R434
R435
C410
C411
C412
C413
R436
R437
C407
JW445
R439
R441
R
442
R
444
R
446
R
447
R
448
R
449
R
450
R451
R
452
R453
R
454
R455
C
416
C
418
C
419
C
421
C
422
R457
R458
C426
R419
R418
R
417
R416
R
415
R414
R
413
R412
R
411
R
410
R409
R
408
R407
R406
R
405
R404
R403
R401
C406
C405
C404
C403
C401
C402
JW443
R481
R479
R477
R475
R474
R473
X402
C447
C446
C444
C445
C441
C457
C456
C439
R467
R466
R465
R464
R463
R462
R461
R460
R459
C458
C431
C430
IC402
C429
C428
C
427
BP404
BP403
R
456
R484
C449
R704
R705
LCD401
C414
R402
R480
R478
R476
R482
X401
JC403
JC402
C433
C434
C435
C436
R443 R445
JC401
IC401
µ
PD789406AGC-
D401
L401
22
22
µ
H
R486
CN405
CN401
CN402
CN403
CN404
CN406
S408
S404
S403
S414
S409
S406
BP405
D402
S413
S412
S415
S407
S410
S405
S416
S411
S402
S401
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
100p
100p
100p
100p
1k
1k
100
10V
10V
10k
10k
1k
1k
1k
1k
1k
1k
1k
100
1k
22k
1k
1k
100p
100p
0.01
0.01
100p
1k
1k
0.01
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
15k
15k
15k
22k
0.1
0.1
0.1
0.1
0.01
100
10V
10V
1k
1k
1k
1k
1k
1k
32.768kHz
22p
22p
0.1
100
10V
10V
22p
0.1
0.1
22p
1k
1k
1k
1k
1k
1k
470k
100
100
0.1
470
6.3V
0.1
PST600L-T
0.01
0.01
0.01
1k
22k
2200p
22k
22k
0.01
47k
100k
100k
100k
100k
4.19MHz
0
0
100p
100p
100p
1000p
100k 100k
0
044-8BT-A
1SS119
220
22P
9P
9P
8P
8P
22P
SLA-360MT3F
1
2
3
4
5
6
7
8
51
52
53
54
55
56
57
58
59
60
61
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
B1
B2
B3
B4
B1
B2
B3
B4
C1
C2
C3
C4
C5
C6
C7
C8
KS0
KS1
KS2
KS3
KS0
KS1
KS2
KS3
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A6
A5
A4
A3
A2
A1
S
E
G
15
S
EG
14
S
E
G
13
SE
G
12
S
EG
11
S
EG
10
S
EG
9
S
EG
8
S
EG
7
S
EG
6
S
EG
5
S
EG
4
S
EG
3
S
EG
2
S
EG
1
S
EG
0
C
O
M
3
C
O
M
2
C
O
M
1
C
O
M
0
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
KS4
KS3
KS2
KS1
KS0
AVDD
AVREF
C
SEN
S
2
C
S
EN
S1
C
S
Q
S
O
A
V
S
S
C
S
C
O
R
C
M
U
T
C
SQ
C
K
A
C IN
B
U
ZZE
R
C
C
LK
C
LA
T
C
D
A
T
A
M
M
UT
V
S
S
1
V
LC
2
V
LC
1
V
LC
0
B
IA
S
V
D
D
1
KR3
KR2
KR1
KR0
TRAY CLOSE
TRAY OPEN
IC
XT1
XT2
VDD0
VSS0
X1
X2
SHIFT1
SHIFT0
R LAT
R CLK
R DATA
S
E
G
9
S
EG
8
SE
G
7
S
EG
6
S
E
G
5
S
EG
4
SE
G
3
S
EG
2
S
EG
1
S
EG
0
CO
M
3
C
O
M
2
C
O
M
1
CO
M
0
KS3
KS2
KS1
KS0
KR0
KR1
KR2
KR3
V
ER
SIO
N
0
V
ER
S
IO
N
1
RESET SIGNAL
GENERATOR
O
G
I
LIQUID CRYSTAL DISPLAY
C
D
O
N
R
A
D
IO
O
N
SYSTEM CONTROLLER
(CD
TES
T M
A
N
U
AL
)
(C
D
TES
T A
U
TO
)
POWER ON
A
M
U
T
(1/4)
RESET
C RST
B MUT
SEG16
SEG17
SEG18
SEG19
NC
C
LO
SE
S
W
O
P
EN
S
W
LIGHT
LCD BACK
ALARM
ON/OFF
CLOCK
ALARM
D.S.T
SUMMER.T
KS3
KS2
KS1
KS0
KR0
KR1
KR2
KR3
PRESET TUNING
SELECT/
PRESET
1
2
3
4
5
S403
S408
S412
S404
S409
CD
OFF/ALARM RESET
CD PLAY MODE
BAND
OPEN/CLOSE
RADIO ON
TUNE/TRACK/TIME SET
+
-
S402
S401
R438
10k
(AEP)
(US, CND)
TRAY
TRAY
TRAY
TRAY
(Page 22)
(Page 21)
(Page 23)
Ver. 1.1
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