Onkyo TX-SR55 Service Manual page 9

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A
B
BLOCK DIAGRAM
MIC AMP
MIC
TUNER PACK
1
VIDEO4
CD
TAPE OUT
TAPE IN
2
VIDEO3 IN
VIDEO2 OUT
VIDEO2 IN
VIDEO1 OUT
VIDEO1 IN
3
DVD
MSL/MSR
MC/MSW
4
COAX 1
COAX 2
OPT FRNT
OPT1
OPT2
OPT3
5
OPT
Digital Output
C
51
NJW1157
52
53
41
42
+
46
54
43
44
45
+
48
55
47
-6dB
56
57
58
TC9162
59
27
4
25
29
Z2_L
60
3
28
26
2
MIX_L
30
Z2_R
61
27
MIX_R
62
63
21
RECOUT_L
12
7
VOLIN_SBL
64
23
25
65
22
RECOUT_R
17
22
VOLIN_SBR
24
66
11
26
18
67
SOURCE_L
10
5
68
SOURCE_R
19
24
6
9
23
69
20
8
21
70
71
73
73
74
16
15
2ch ADC
14
13
RX0
49
RX1
48
RX6
43
RX2
47
DIR
RX3
46
RX4
45
RX5
44
42
TX
50
CS42518
D
E
80
88
1
TONE
81
89
2
TONE
82
90
3
A
+20.2dB
87
95
8
A
83
91
4
84
92
5
85
93
6
+6dB@ZONE2
86
94
7
19
27
A
TONE
17
28
A
TONE
BD3814
8ch DAC
F
G
POWER AMPLIFIER
+29dB
+29dB
+29dB
FL_PO
+29dB
FR_PO
+29dB
CT_PO
SW_PO
+29dB
SL_PO
+29dB
SR_PO
SBL_PO
SBR_PO
SW
PREOUT
ZONE2 PREOUT/LINEOUT
Z2L_PO
L
Z2R_PO
R
FLASH ROM
MX29LV040
2M Bit
62
110
63
109
64
107
1
106
DSP
SD_RAM
58
118
CS494003
IC42S16100
54
86
134
2M Byte
81
80
TX-SR55
H
HEADPHONES
SPEAKER TERMINALS
FRONT LEFT
FRONT RIGHT
CENTER
SURR. LEFT
SURR. RIGHT
SUUR. BACK
LEFT
SUUR. BACK
RIGHT
ZONE2 LEFT
ZONE2 RIGHT
RJ-45 for
A-BUS
DC24 in for
A-BUS
40k IR in1 for
IR
DE-MODULATOR
A-BUS
40k IR in2 for
A-BUS
56k IR OUT for
IR 56k
RE-MODULATOR
A-BUS
12V TRIGGER A
12V TRIGGER B
12V TRIDDER
CONTROL
12V TRIGGER C
IR
IR IN
DE-MODULATOR
IR OUT
RI
RIex
INTERFACE
RS-232C
INTERFACE
RS-232C

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