Onkyo TX-L55 Service Manual page 13

A B
SCHEMATIC DIAGRAM 1
DISPLAY SECTION
1
2
3
101J
C8810
104Z
C8840
R8820
470
11 FL-H2 R8810
470
10 FL-H1
9 -VP
8 GND
7 GND
D8990
6 +5V
4
5 1SS335 MCSDA
4 MCMDA
3 MCCLK
2 MCRDY
1 MCRST
P7001C
5
C
Q8020
HFA-12SM50T
U8
NADIS-8343
-VP
C8930
47/50
P4 61
P4
P3 62
P3
P2 63
P2
P1 64
P1
P36 65
P36
R8280 66
NC
100K
12G 67
14G Q8010
68
Q8280 13G
2SC2712-GR 69
12G
11G 70
11G
10G 71
MPD780232GC-091-8BT
10G
9G 72
9G
8G 73
8G
7G 74
7G
6G 75
6G
5G 76
5G
4G 77
4G
3G 78
3G
2G 79
2G
1G 80
1G
101J
101J 100/6.3
C8820
C8910
C8830
104Z
C8920
104Z
R8970
C8850
1M
X8010
1
D8810
5MHz
UDZ5.6B
C8100
C8090
330J
C8080
330J
C8070
330J
C8060
330J
R8110
330J
10K
R8712
100
C8712
104Z
U8711
100/6.3 100/6.3
3 C8711 C8711
2
1 R8711
PIC-37143TC5
D E
R8911
R8912
R8913
R8914
40
P23
39
P24
38
P25
37
P26
36
P27
35
P28
34
P29
33
P30
32
P31
31
P32
30
P33
29
P34
28
P35
R8270 10K
27
26 R8260 10K
25 +5V
VDD
24
AVDD
23 GND
VSS
22 KEY0
KEY0
21
KEY1
R8240 2.7K
104Z
C8240
KEY2
R8190 10K
R8170
10K R8140
10K
R8130
10K +5V
R8510
10K
10K
2.7K
R8520
R8210
C8210
104Z
IRIN
100
F G
100K
100K
100K
100K
R8750
R8760 R8740
R8770
390 470 820 1K
TU DOWN TU UP DVD TV
VOLUME VOLUME
D8340 D8330
Q8340 Q8330
R8241 2.7K
DTC114YKA DTC114YKA
104Z
C8241
R8660
0
NASW-8348
S8510
MASTER U9
VOLUME
Q8310
P8310A P8310B
1 1
DTC114YKA
2 2
3 3 GND1
R8620 R8610
4 4
390 5 5
470
GND2
TX-LR552
H
R8730
R8720 R8710
10K
1.8K 3.9K
V1 V2 AUX FM
R8650
390
AM LISTENING
D8310
STANDBY
STANDBY