Read Sony ICF-CD523 Service Manual online
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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