Onkyo HT-R420 Service Manual

PRINTED CIRCUIT BOARD VIEWS-1
TX-SR402/8240/HT-R420
A
1
2
3
4
5
BCD
2
01
C10
103
C1
C
C
C
C
C
C10
C1
03
C
1
0
10
4
C
10
04
4
C105
0
C
C
1
0
C105
0
C
C
1
0
C105
0
C
C
1
0
C
C
106
106
6
6
C
C
1
1
C
C181
C181
C
1
1
2
C182
C182
C183
C18
C184
C184
C184
C184
5
5
C185
C185
C186
C186
C
C
C187
C187
C187
C300
0
301
3
01
C30
3
0
C
C302
302
C
C30
30
C
C
C
2
2
C
C
C3
2
2
C303
C
C303
C
C3
C304
C
3
C305
0
C
5
30
C
C
C
C
C305
0
C
5
30
C306
06
C3
6
30
C
C307
C3
C30
C310
C3
0
310
C
C311
C3
31
C
C
C312
2
C3
31
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313
3
3
31
C31
C3
31
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3
3
4
C314
4
C3
C31
C315
5
C3
C31
C316
6
C3
C316
31
C3
C3
C
17
7
17
C318
8
C3
C318
31
C319
9
C3
31
C
20
0
0
C
3
2
C3
21
C322
C3
C
2
3
23
3
C323
C32
C323
C325
25
C3
C
C325
32
C326
6
C3
C326
C
327
C3
2
8
C329
C3
C329
C330
C330
C331
331
C332
C333
C333
C334
C
4
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C
C334
C335
C
C3
C336
C
C336
336
C337
C337
C338
C
C339
C33
C340
C340
40
C341
C341
2
2
C342
C342
C342
C343
C
C
4
3
C344
C3
C345
C345
C346
C346
C347
C3
C
C
C348
C
C34
348
3
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349
C350
C3
C35
1
C352
C352
C353
C
C353
C
C
35
4
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C355
C355
C356
C356
C356
C357
C357
C357
C358
C358
C358
C359
35
C359
C359
C360
C361
1
361
C36
C36
2
C3
C3
3
363
3
C36
36
364
36
C365
C366
C3
6
6
367
7
36
C
C
C
7
C367
36
C
3
C
67
7
C
C
C371
C3
371
C372
72
C373
C
373
C374
C374
75
75
C3
C3
C3
37
37
37
376
76
C37
C701
0
7
C
C
1
70
7
C7
C7
0
2
C703
C
0
C
C704
0
4
4
C
C
C
C
C
C
705
0
7
5
5
C706
C706
C
C707
0
7
7
7
C7
C
C708
C708
C709
C709
C709
C710
C7
C
71
1
C712
C
C713
C
C71
C714
1
C
15
5
1
15
C7
C
7
C7
C
716
7
6
C717
C717
C71
C720
C720
C720
C720
C720
C721
C
C721
C721
C
C722
C7
C726
C
C7
72
6
2
7
C727
C
C7
2
7
7
7
C728
C7
2
7
8
8
9
2
9
72
C7
C
7
7
7
2
2
C730
730
30
C
C
C7
7
3
1
C732
2
C
7
32
C800
C800
C801
C801
C8
C8
C
C80
C8
802
80
02
C
C
C8
C
80
80
0
02
02
2
C
C
C
C80
80
C8
C
C
C8
C8
C
803
803
803
C
C
C
C
C
C804
C804
C804
C805
C805
C805
C806
8
0
806
8
0
C807
C
C808
8
08
C80
C
80
9
C810
10
C8
0
0
C811
C8
C812
812
813
3
C
814
4
C
815
15
15
5
C
C816
8
C832
C832
C832
C
C832
C833
3
4
C
8
3
C
835
C836
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837
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840
0
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C8
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C
C84
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2
4
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C
C843
3
4
4
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84
4
4
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845
5
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8
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C
84
48
8
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C851
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C6
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01
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640
640
C
C
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64
3
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40
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0
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C70
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02
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C7
C
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C
C70
C70
004
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0
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C70
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6
6
C7
C7007
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C7
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C7
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01
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C701
01
1
1
1
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70
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1
2
1
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70
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C7014
C7
4
15
C7015
C9501
C9
C9502
2
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C9503
C950
3
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C9505
C9
C9505
C9506
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6
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C
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06
507
7
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C950
7
8
C9508
C
9
9
508
10
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1
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511
1
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C9
C9512
9512
C9512
C9512
D801
D802
D802
D7
D7
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00
D7002
D
D7002
70
D
D
003
00
D700
D70
D7004
70
004
04
D
D77
0
2
D9502
D950
D9503
D950
D9504
4
D9505
D950
D95
D9506
D9506
9507
D9
507
D9508
D
D
95
0
E30
300
E3
L181
1
L18
0101
0
L701
701
L70
L702
70
2
L7
L7
L
L7
L703
L70
L703
3
L704
04
L7
L
70
L705
L
L705
L705
L
L801
L801
L8
L8
L802
8
L
L803
L
L
80
4
L7001
L7
00
7001
L7
00
7002
2
L7
01
0
P10
P
P1
10
1
10
1
0
P
P
301
1
1
P301
1
P
02
02
P
P
2
2
P
30
30
P302
3
P
304
P
3
30
4
P305
P
30
5
P
5
P305
P306
306
P30
P261A
P261A
P261A
P261A
3
3
5
1
P
P
35
1
80
1P
P802
2
B
P410
P4
10B
B
B
4
P4
11B
P
P
412B
412B
P4
P4
B
B
03
3
P6403
P7
P7
P7
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7502B
7502
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2
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50
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P7
2B
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01
01
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8
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0
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305
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30
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15
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5
5
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7
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30
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310
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20
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25
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32
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32
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27
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28
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33
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34
34
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41
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344
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1
U1 PREAMPLIFIER
PC BOARD
(NADG-7401)
Both side view from
component side
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Onkyo HT-R420 Specifications

General

Brand	Onkyo
Model	HT-R420
Category	Receiver
Language	English