Sony DAV-EA20 / HCD-EA20 Service Manual ▷ View online
53
53
HCD-EA20
6-23. SCHEMATIC DIAGRAM – AMP/SUB TRANSFORMER SECTION (1/2) –
EP951
C958
D
9
5
5
R954
IC953
R953
R961
C963
C502
C503
C504
C505
C506
C507
C508
C513
C521
C522
C523
C524
C525
C
5
2
6
C
5
2
7
C528
C531
C532
C533
C551
C552
C553
C556
C558
C562
C563
C956
C970
R501
R502
R503
R504
R505
R506
R507
R508
R509
R510
R513
R514
R515
R516
R517
R518
R521
R522
R523
R524
R525
R526
R527
R528
R529
R533
R535
R536
R537
R538
R541
R542
R551
R552
R553
R554
R555
R556
R557
R558
R559
R563
R564
R565
R566
R567
R568
R951
R
9
6
0
R971
R972
R973
R980
R981
L951
L952
L953
C501
C512
IC502
IC522
IC552
R952
FH903
FH904
FH905
FH906
R955
R974
C960
C554
C
5
55
C966
C967
R962
R963
R964
R965
R
9
5
9
R
9
5
6
R
9
5
7
R
9
5
8
F902
F903
R497
R560
C955
C957
C964
D
9
5
4
C959
C962
C965
R530
C511
C953
C952
R
5
3
4
C912
C905
JW901
C916
CN902
R911
R912
C911
RY901
R902
R903
R904
R913
R914
R916
T901
C914
C913
R543
R545
R544
R546
IC
9
1
1
D914
D913
D911
D912
D901
Q901
CN901
C541
C542
IC501(2/2)
IC501(1/2)
IC551(1/2)
IC551(2/2)
C560
C559
C510
C509
Q511
Q512
Q551
Q552
C564
C565
Q521
Q522
Q972
C971
C534
C535
C530
C529
IC521(2/2)
IC521(1/2)
C951
D951
D952
C961
D958
CNP901
C915
D915
CN952
CNP951
L901
L902
IC
9
5
2
IC951
C515
C514
CN401
CN302
CN303
CN951
C561
D
9
5
6
C557
1000
16V
R
K
3
6
L
F
-A
4
120
SI-8033JF
330
120
1000
6.3V
6.3V
10
50V
0.001
0.001
0.0047
0.0047
47 16V
10
50V
10
50V
10
50V
10
50V
0.001
0.001
0.0047
0
.0
0
4
7
4
7
1
6
V
10
50V
47
16V
10
50V
10
50V
10
50V
10
50V
0.001
0.0047
10
50V
10
50V
10
50V
0.1
470
10V
2.2k
2.2k
10k
10k
2.2k
2.2k
2.2k
2.2k
2.2k
2.2k
2.2k
2.2k
10k
10k
22k
22k
2.2k
2.2k
10k
10k
2.2k
2.2k
2.2k
2.2k
2.2k
2.2k
10k
10k
22k
22k
100k
100k
2.2k
2.2k
10k
10k
2.2k
2.2k
2.2k
2.2k
2.2k
2.2k
2.2k
10k
10k
22k
22k
100k
1
0
0
100k
4.7k
10k
560
47
22
50V
22
50V
M62429P
M62429P
M62429P
6.8k
2.2k
2.2k
0.47
0.001
0
.0
0
4
7
0.01
0.01
10k
10k
10k
10k
1
0
k
2
2
k
2
2
k
2
2
k
T6.3AL
T6.3AL
2.2k
2.2k
6800 35V
100 35V
0.47
1
1
E
Q
S
0
4
-T
A
1
B
100 35V
100 35V
0.47
2.2k
47 16V
2200 35V
2200 35V
2
.2
k
0.1
0.01
250V
0.1
2P
15k
33k
2200
16V
RELAY
100k
680
22
100k
22k
100k
1 50V
100 10V
150 1/2W
100 1/2W
150 1/2W
100 1/2W
10EDB40
-TA2B5
10EDB40
-TA2B5
10EDB40
-TA2B5
10EDB40
-TA2B5
1SS133T
-77
2SC2412KLN
-T146-E
2P
22 35V
22 35V
NJM4580
E(TE2)
NJM4580
E(TE2)
NJM4580
E(TE2)
NJM4580
E(TE2)
10
50V
10
50V
10
50V
22
50V
2SC3624A
-T1L15
2SC3624A
-T1L15
2SC3624A
-T1L15
2SC3624A
-T1L15
470p
470p
2SC3624A
T1-L15
2SC3624A
T1-L15
DTA114EKA
-T146
4.7
50V
50V
470p
470p
10
50V
10
50V
NJM4580
E(TE2)
NJM4580
E(TE2)
0.22
100V
D15XB20
-4001
D15XB20
-4001
1000
10V
1SS355TE-17
D957
1SS355TE-17
5P
47 16V
10EDB40-TA2B5
11P
10P
S
I-8
0
5
0
S
-L
F
1
1
0
1
SI-8120JF
470p
470p
5P
21P
9P
5P
47 16V
R
K
3
6
L
F
-A
4
47 16V
54
54
HCD-EA20
6-24. SCHEMATIC DIAGRAM – AMP/SUB TRANSFORMER SECTION (2/2) –
TO
PROTECT SWITCH
C444
C443
C494
C493
R453
R452
C454
R402
R403
EP902
C348
C347
C398
C397
R
Y
4
61
R
Y
3
81
R
Y
3
82
R
Y
33
1
C396
C395
C346
C345
R462
R463
R413
R412
R461
R411
R377
R378
R328
R327
R376
R326
R325
R375
R372
R373
R323
R322
R371
R321
R407
R406
C451
C401
R451
R401
R469
R468
R467
R339
R338
R337
R384
R471
R473
R477
C472
R478
R475
R479
C473
R480
R332
R333
R331
R482
R359
C362
R358
R362
R357
C360
R304
R305
R303
R301
C351
R354
R355
R356
R353
C353
CN421
R434
C423
R495
R435
R437
R436
R438
C421
R313
R409
R428
R429
IC401
IC301
C403
C491
C441
C492
C442
C341
C342
C391
C392
C343
C344
C393
C394
C461
R
37
9
C323
C324
C373
C374
R374
C321 C322
C371
C372
R324
C406
R405
C452
C402
R470
C326
R310
C359
C358
C357
R309
C305
C354
C355
C356
C313
R
3
5
2
R
308
R404
R454
C453
C471
R
4
26
R
425
R
4
24
R
4
2
3
R
4
22
R
421
R
4
41
R
4
42
R444
R
4
9
4
R
443
R
3
41
R
34
2
R
3
44
R343
R493
C462
C412
R415
C411
R330
R380
R3
34
R
3
9
2
R
39
1
R
39
5
R
3
9
6
R
34
5
R
3
46
R
34
7
R
348
R
3
94
R393
R
350
R349
R
39
8
R397
R383
C303
R302
C422
C308
C301
R
35
1
C309
R
4
14
R465
R
4
64
C311
R361
C312
R329
THP471
J301
L4
4
1
L49
1
L
34
1
L3
9
1
L
34
3
L342
L392
CN953
Q424
D430
Q425
Q472
Q474
Q478
Q479
Q426
Q476
Q477
D471
D472
D411
D461
Q411
Q461
Q462
D462
Q382
Q381
D381
D382
Q383
Q332
D331
Q371
Q321
D371
D321
Q323
D323
D372
D322
Q372
Q322
Q401
R306
R307
R360
R382
Q331
Q463
R408
Q473
R487
R486
R485
R483
R484
R488
C425
C474
D
473
D401
C407
C404
R
3
11
C307
C302
C361
R335
C325
R
3
8
7
C
35
2
C30
4
C408
R385
R386
R340
R
4
96
220p
220p
220p
220p
680
47k
10
50V
47k
680
220p
220p
220p
220p
220p
220p
220p
220p
15k
100k
100k
15k
1k
1k
15k
100k
100k
15k
1k
1k
10
1/2W
10
1/2W
15k
100k
100k
15k
1k
1k
33k
1k
1
50V
1
50V
1k
1k
47k
47k
10k
47k
47k
10k
47k
47k
1k
22k
100
10V
10V
33k
2.2k
10k
2.2
50V
50V
10k
15k
100k
1k
47k
680
10
50V
680
47k
680
10
50V
47k
47k
47k
1k
1 50V
47k
47k
47k
1k
1 50V
3P
EH
EH
2.2k
0.1
4.7k
220k
47k
100
4.7k
100
16V
16V
10k
10k
2.2k
2.2k
STK403-030
STK402-920
220p
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
2
2W
0.1
0.1
0.1
0.1
0.22
2W
0.1
0.1
0.1
0.1
0.22
2W
0.001
100
1/4W
1000p
1000p
220
1W
0.1
100 1/4W
220p
220p
220p
100
1/4W
220p
1000p
1000p
1000p
0.001
1k
4
7k
47k
47k
220p
10 50V
47
k
4
7k
4
7k
47
k
4
7
k
47
k
22
22
22
22
2
2
22
22
22
22
22
0.1
0.1
10 1/2W
0.1
10 1/2W
10 1/2W
0
.2
2
2
W
2
2
2
2
2
2
22
2
2
2
2
2
2
2
2
2
2
22
2
2
22
22
22
47k
1000p
47k
10
50V
100 10V
1 50V
1
k
100 10V
0.22
2W
10 1/2W
0.22
2
W
100 35V
47k
100 35V
0.22
2W
2P
2SD25258(TP)
1SS355
TE-17
2SC2412
KLN-T146-E
2SC2412
KLN-T146-E
2SC2412
KLN-T146-E
2SC2412
KLN-T146-E
2SC2412
KLN-T146-E
2SC2412
KLN-T146-E
2SD1781
K-T146
-QR
2SA1037AK
-T146-Q
1SS355
TE-17
1SS355
TE-17
1SS355
TE-17
1SS355
TE-17
2SA1037AK
-T146-Q
2SA1037AK
-T146-Q
DTA114EKA
-T146
1SS355
TE-17
2SC2412
KLN-T146-E
DTA114EKA
-T146
1SS355
TE-17
1SS355
TE-17
DTA114EKA
-T146
2SC2412
KLN-T146-E
1SS355
TE-17
2SA1037AK
-T146-Q
2SA1037AK
-T146-Q
1SS355
TE-17
1SS355
TE-17
2SA1037AK
-T146-Q
1SS355
TE-17
1SS355
TE-17
1SS355
TE-17
2SA1037AK
-T146-Q
2SA1037AK
-T146-Q
2SC2412
KLN-T146-E
560
560
47k
10k
DTA114EKA
-T146
2SC2412
KLN-T146-E
4.7k
2SC2412
KLN-T146-E
47k
68k
56k
56k
47k
56k
4.7
50V
100 10V
1S
S
355
T
E
-1
7
1SS355
TE-17
100 35V
10 50V
10
k
1 50V
1000p
10 50V
10 1/2W
0.1
2
2
0
1
W
1
50
V
220
p
10 50V
47k
220
1W
220 1W
4.7
k
55
55
HCD-EA20
IC802
IC801
T O
U C O M
B O A R D
C N 6 0 1
( P a g e 4 7 )
T O
A M P
B O A R D
C N 4 0 1
( P a g e 5 2 )
PREV
NEXT
PRESET
VOLUME
-
+
FUNCTION
PHONES
E
E
E
E
FLUORESCENT INDICATOR TUBE
1
1
1
5
5
5
POWER
POWER
1
2
A
B
C
D
E
F
3
4
5
6
7
8
9
10
11
6-25. PRINTED WIRING BOARD – PANEL SECTION – • See page 27 for Circuit Boards Location.
•
: Uses unleaded solder.
Ref. No.
Location
D802
E-2
D803
E-1
D804
E-1
D806
B-7
D807
B-6
D808
A-7
D809
A-7
D810
B-6
D812
E-2
D885
B-9
D887
B-9
IC801
E-1
IC802
B-3
Q803
B-7
Q804
B-8
Q881
B-8
Q882
C-8
• Semiconductor
Location
56
56
HCD-EA20
6-26. SCHEMATIC DIAGRAM – PANEL SECTION –
C811
FB800
R850
D812
C800
C801
C809
C812
C817
L813
R881
R882
C839
C832
C827
L801
C821
C820
T801
C822
IC801
D806
D807
D808
D809
C818
C825
C826
C828
C829
C833
C834
C836
C835
C837
C838
C824
J851
S800
C814
C815 C816
C830
C813
FB802
FB801
C819
S822
S821
S823
S812
S811
S814
S813
L812
IC802
FL801
R844
R846
R840
R855
R874
D810
C823
Q803
Q804
R843
R842
R841
THP801
CN801
CNP804
R822
R823
R812
R814
R813
D802
R804
R810
R835
CNP805
D804
D803
CNP802
S831
Q882
Q881
CNP881
R879
C803
C802
FB851
C876
CNP801
D885
D887
C808
10 50V
0
3.9k
1/10W
SEL2210R-T
P6
0.01
25V B
0.01
25V B
0.001
0.001
50V
0.001
50V
2.2k
2.2k
0.001
50V
10 50V
0.01
25V
B
10
50V
0.01
50V
F
0.1
16V
16V
F
IC NJL74H4
00A
1SS355TE-1
7
1SS355TE-1
7
1SS355TE-1
7
1SS355TE-1
7
220p
220p
220p
220p
220p
220p
220p
220p
220p
220p
220p
220p
0.001
50V
B
100p
0.001
50V
B
10
16V
0.1
16V
F
0
0UH
0.01
50V
F
PT6315
100k
100k
82k
100
33k
MA8039-H-TX
10
50V
2SD1624T-
TD-E
2SD1624T-
TD-E
100
100
100
17P
5P
1k
2.2k
1k
2.2k
1k
5P
1k
47
47
5P
1SS355TE-17
1SS355TE-17
2SC3624A
-T1L15
2SC3624A
-T1L15
5P
100
0.0022
0.0022
0
330p
RB501V
-40TE-17
RB501V
-40TE-17
0.01
25V
B
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