Onkyo TX-SR402 Service Manual page 12

A
BLOCK DIAGRAM
1
2
L
CD
1
R
72
L
TAPE OUT
71
R
4
L
TAPE IN
3
R
6
L
VIDEO3
5
R
8
L
VIDEO-2 IN
7
2 R
76
L
VIDEO-1 OUT
75
R
10
L
VIDEO-1 IN
9
R
12
L
FRONT
11
R
14
L
SURROUND
DVD
13
R
16
CENTER
3
15
SUB WOOFER
COAXIAL
DIGITAL IN
OPTICAL
Q281
74HCU04
VIDEO
VIDEO3 IN
4
VIDEO2 IN
VIDEO1 IN
DVD IN
S-VIDEO
C Y
VIDEO 2 IN
C Y
VIDEO 1 IN
5
C Y
DVD IN
B
78
TUNER UNIT
77
2CH A/D
96/24
Q701
DIR
CS493264
DSP
OSC
12.288MHZ
Q203
LA7956
MUTE
Q202
Q201
VIDEO SELECTOR
Q213
LA7956
MUTE
Q211
Q212
LA7956
Q210
Q207
Q208
C
MAIN MICROPROCESSOR
18
NC
20
NC
L
50KLPF
R
Q801
50KLPF
AK4586
SL
50KLPF
96/24
6CH D/A
SR
50KLPF
C
50KLPF
SW
50KLPF
VIDEO
MONITOR OUT
VIDEO 1 OUT
U7501
REMOTE SENSOR
S-VIDEO
C
Y
MONITOR OUT
C Y
VIDEO 1 OUT
TX-SR402/8240/HT-R420
Q301 BD3811K
Q302(1/2)
Q804
10.5dB
Q302(2/2)
Q803
DSP
Q802
12.5MHZ
MAIN
MICROPROCESSOR
Q7008
MPD784225GC-XXX-8BT
5MHZ
SUB
MICROPROCESSOR
Q7502
MPD780232GC-XXX-8BT
STANDBY
D7507
D
INPUT GAIN
69
0/6dB
INPUT GAIN
66
0/6dB
INPUT GAIN
43
0/6dB
INPUT GAIN
40
0/6dB
INPUT GAIN
30
0/6dB
INPUT GAIN
33
0/6dB
POWER SUPPLY
+7V
Q321
+
78L07
-7V
Q322
-1
79L07
POWER SUPPLY
+2.5V
Q7004
+5
+3.3V
BA33C25
BACK
UP
Q7501
16BT123G
FL TUBE
OPERATION KE