Onkyo TX-SR55 Service Manual page 5

A
BLOCK DIAGRAM
MIC AMP
MIC
1
VIDEO4
CD
TAPE OUT
2
TAPE IN
VIDEO3 IN
VIDEO2 OUT
VIDEO2 IN
VIDEO1 OUT
3
VIDEO1 IN
DVD
MSL/MSR
MC/MSW
4
COAX 1
COAX 2
OPT FRNT
OPT1
OPT2
5
OPT3
OPT
Digital Output
B
Amplifier section
TUNER PACK
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
73
73
74
16
15
14
13
RX0 49
RX1 48
RX6 43
RX2 47
RX3 46
RX4 45
RX5 44
42
TX 50
C
NJW1157
41 42
+
46
43 44 45
+
48
47
-6dB
TC9162
27 4
25
29 Z2_L
3
28 26
2
30 Z2_R
27
21 RECOUT_L 12 7
23
25
22 RECOUT_R 17
22
24
11
26
18
SOURCE_L 10 5
SOURCE_R 19 24
6
9 23
20
8
21
2ch ADC
DIR
CS42518
TX-SR55
D
80
88
81
89
82
90
87
95
83
MIX_L 91
MIX_R
84
92
VOLIN_SBL 85
93
VOLIN_SBR 86
94
19
A
17
A
8ch DAC
A
A
TONE
TONE