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TX-SR503
Service manual
Onkyo TX-SR503 Service Manual page 14
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A
B
SCHEMATIC DIAGRAMS-1
AUDIO INPUT SECTION
NAAF-8523(1/2)
P5505
1
A_GND
R5501
R5541
TUNER_R
NC
C5501
NC
C5502
R5502
NC
TUNER_L
NC
R5542
C5701
P7902
2
NC
R5503
R5543
CD_R
C5503
330
221J
CD
C5504
R5504
221J
CD_L
330
R5544
C5702
103J
R5505
R5545
330
C5505
TAPE OUT
NC
C5506
R5506
NC
TAPEOUT_L
330
R5546
C5703
NC
R5507
R5547
TAPE_R
330
C5507
221J
TAPE IN
C5508
R5508
221J
TAPE_L
330
R5548
R5700
NC
NC
R5549
VIDEO3_R
R5701 NC
C5509
NC
R5702
NC
C5510
NC
VIDEO3_L
R5703NC
R5550
C5704
R5704
NC
NC
NC
R5551
V2OUT_R
R5705
C5511
NC
NC
NC
NC
C5512
3
NC
NC
V2OUT_L
R5706
R5552
C5705
R5707
NC
NC
R5513
R5553
C5513
330
VIDEO2 IN
221J
C5514
R5514
221J
330
R5554
C5706
P7904
103J
R5515
R5555
VIDEO2_R
330
C5515
NC
VIDEO1 OUT
VIDEO2_L
C5516
R5516
NC
V1OUT_L
330
R5556
C5707
NC
R5517
R5557
VIDEO1_R
330
C5517
221J
VIDEO1 IN
C5518
R5518
221J
VIDEO1_L
330
R5558
P7905
R5519
R5559
FRONT R
MULTI_R
C5519
330
NC
221J
C5520
NC
R5520
FRONT L
221J
MULTI_L
330
R5560
C5708
103J
R5521
R5561
SURR R
MULTI_SR
4
C5521
330
221J
DVD IN
C5522
R5522
221J
SURR L
MULTI_SL
330
R5562
R5523
R5563
SUBWOOFER
MULTI_SW
330
C5523
56K
221J
C5524
56K
R5524
CENTER
221J
MULTI_C
330
R5564
R5525
R5565
PRE_R
C5525
NC
NC
NC
C5526
NC
R5526
NC
PRE_L
R5566
NC
C5709
NC
R5527
R5567
PRE_SR
C5527
NC
NC
NC
C5528
NC
R5528
NC
PRE_SL
R5568
NC
PREOUT
P7907
R5529
R5569
PRE_SW/SBL
SUBWOOFER
100
C5529
22K
102J
C5530
NC
R5530
NC
PRE_C
5
R5570
NC
C5710
103J
R5531
R5571
C5531
NC
NC
PRE_SBR
C5532
R5532
NC
PRE_SW/SBL
NC
R5572
C5711
NC
P6906
TO_P6906
C
U05
AMPLIFER PC BOARD (1/2)
FSWDAT
TAPEOUT_R
4
5
DMIXR
7
10K
Q5503
R5591
6
10K
R5590
470
1.2K
C5590
R5592
R5593
330J
10K
R5594
10K
R5595
330J
C5591
470
1.2K
R5598
R5596
R5597
10K
2
R5599
Q5503
DMIXL
10K
1
3
8
NJM4565M-D
C5669
220/25
C5668
220/25
MULTI_SW
MULTI_SR
MULTI_SL
MULTI_C
AIN_R
AIN_L
D
E
TO NADG-8514
TO NADG-8514
P303
P301
R5666
22
R5667
22
C5571 10/50
C5569 10/50
C5570 10/50
C5568 10/50
FL_OUT
80
LAIN
1
FR_OUT
79
LATCH
2
R5589 220
CT_OUT
78
CLOCK
3
R5588 220
SL_OUT
77
DAT
LSOUT
4
R5587 220
SR_OUT
LOUT
76
DGND
RSOUT
5
ROUT
SBL_OUT
75
NC
LBOUT
6
COUT
SBR_OUT
74
R12IN
RBOUT
7
SW_OUT
73
L12IN
SWOUT
8
C5550
72
R11IN
DC_L1
9
4.7/50
71
L11IN
DC_L2
10
MIC
224J
C5551
70
R10IN
FIL_BL
11
MIC
472J
C5552
69
L10IN
FIL_TL
12
VIDEO4_R
C5553
68
R9IN
DC_R1
13
4.7/50
VIDEO4_L
67
L9IN
DC_R2
14
TUPACK_R
Q5501
C5554
66
R8IN
FIL_BR
15
224J
TUPACK_L
NJW1157B
65
L8IN
FIL_TR
16
TUNER_R
C5555 472J
64
R7IN
GND
17
TUNER_L
63
L7IN
GND
18
CD_R
V+
62
R6IN
19
CD_L
V-
61
L6IN
20
TAPE_R
60
R5IN
REC_A1L
21
TAPE_L
59
L5IN
REC_A1R
22
VIDEO3_R
58
R4IN
REC_A2L
23
R2IN
VIDEO3_L
57
L4IN
L2IN
REC_A2R
24
VIDEO2_R
56
R3IN
R1IN
REC_A3L
25
VIDEO2_L
L1IN
55
L3IN
REC_A3R
26
VIDEO1_R
54
REC_A4L
27
VIDEO1_L
53
REC_A4R
28
MULTI_R
Z2_L
52
REC_A1L
29
MULTI_L
Z2_R
51
REC_A1R
30
AIN_L
SOURCE_L
AIN_R
SOURCE_R
<Note>
NC=No mount of parts.
F
G
TO NADG-8514
P302
Except
Q5650
R5811
D5650
NC
NC
2SB1068
MDD, MDC
Q5652
Q5654
R5653
PURE AUDIO
NC
RN2402
1K
SWITCH
O
G I
Q5651
RN1402
KRC102S
R5680
G I
+12V
O
100K
R5681
Q5655 NC
-12V
100K
D5651
NC
R5682
R5812
NC
100K
Q5640
AN34060A
R5640
0.22
C5643
C5642
22/50
22/50
Q5660
78M12HF
J5620
R5660
O
G I
12
R5661
G I
O
22
Q5661
79M12HF
J5620
R5808
0
Q5671 NC
R5671
R5665
68(1W)
O
G I
22
D5671
NC
MTZ6.8C
C5671
D5672
NC
MTZ6.8C
R5672
C5672
R5664
68(1W)
G I
O
22
Q5672
NC
C5664
C5665
R5809
0
220/25
220/25
R5631
47K
R5632
C5631
15K
221J
R5633
1.2K
SW
R5601
R5607
R5606
R5605
R5604
R5603
R5602
R5600
220K
220K
220K
220K
220K
220K
R5609
R5608
220K
220K
NC
NC
AMUT
Z2MUT
J5654
NC
J5659
NC
J5658
NC
PRE_SR
PRE_SL
PRE_C
PRE_SBR
PRE_SW/SBL
TX-SR503/503E/8350
H
TO NADG-8514
P311B
TO
NAAF-8523 (2/2)
+24V
D9011
RN1N4003
D9021
NC
C9010
4700/16
C9005
334J MMT
C9017
102J
D5700
NC
RL5700
NC
P5504
PRE_R
PRE_L
TO NAAF-8540
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This manual is also suitable for:
Tx-sr8350
Tx-sr503e
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