Onkyo TX-L55

TX-L55
SCHEMATIC DIAGRAM 1
DISPLAY SECTION
-VP
MCMDA MCCLK MCRST MCRDY MCSDA
P4
P3
P2
P1
P36
11G
10G
9G
8G
7G
6G
5G
4G
3G
2G
1G
VAJ VBJ
FL-H2
FL-H1
-VP
MCSDA
MCMDA
MCCLK
MCRDY
MCRST
GND
GND
V+5
V+5
V+5
V+5
STLED
KEY1
KEY0
GND
IRIN
12G
V+5
GND1
GND2
P23
FL-H2 FL-H1
P36 P4 P3 P2 P1 12G 11G 10G 9G 8G 7G 6G 5G 4G 2G 1G 3G
P25 P26 P27 P28 P29 P30 P31 P24 P32 P33 P34 P35
-VP
P19 P20 P21 P22
P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18
DISPLAY
INPUT
DOWN
INPUT
UP
LISTENING
TU UP
TU DOWN
TONE
TONE UP
TONE DOWN
INPUT
UP
INPUT
DOWN
LISTENING
STANDBY
STANDBY
VOLUME
MASTER
NASW-8345
NASW-8347
NADIS-8346
C851
102J
C852
102J
R805
0
R816
10K
R817
10K
R813
10K
R852
10K
R851
10K
R854
10K
R828
100K
C881
101J
R881
470
R806
470 R807
470
R810
470
C810
330J
C808
330J
C809
330J
C806
330J
C807
330J
R809
470
R882
470
R8701
100
R819
10K
R820
10K
C882
101J
C883
101J
C884
104Z
C885
104Z
C892
104Z
R814
10K
R827
10K
R826
10K
R853
10K
R897
1M
D899
1SS335
R811
10K
C821
104Z
R824
2.7K
C824
104Z
S862
R808
470
X801
5MHz
U8701
PIC-37043TM2
1
2
3
C893
33/50
+
C891
100/6.3
+
R8702
100
C8702
104Z
C8701
100/6.3
+
D881
UDZ5.6B
1
Q828
2SC2712-GR
P7001A
1
2
3
4
5
6
7
8
9
10
11
R862
390
P851A
1
2
3
R821
2.7K
Q801
MPD780232GC-091-8BT
61
P4
62
P3
63
P2
64
P1
65
P36
66
NC
67
14G
68
13G
69
12G
70
11G
71
10G
72
9G
73
8G
74
7G
75
6G
76
5G
77
4G
78
3G
79
2G
80
1G
1
5V
2
GND
3
CLOCK
4
CLOCK
5
FRAIC
6
RESET
7
SUBCL
8
SUBSI
9
SUBSO
10
SUBREQ
11
VOLA
12
VOLB
13
STLED
14
LED1
15
IRIN
16
LED2
17
NC
18
AVSS
19 20
KEY2
21
KEY1
22
KEY0
23
VSS
24
AVDD
25
VDD
26
27
28
P35
29
P34
30
P33
31
P32
32
P31
33
P30
34
P29
35
P28
36
P27
37
P26
38
P25
39
P24
40
P23
41
P22
42
P21
43
P20
44
P19
45
P18
46
P17
47
P16
48
P15
49
P14
50
P13
51
P12
52
P11
53
P10
54
P9
55
P8
56
P7
57
P6
58
P5
59
VDD2
60
VDISP
P831B
1
2
3
4
5
Q834
DTC114YKA
Q833
DTC114YKA
Q832
DTC114YKA
R832
330
R833
330
R834
330
D834 D833 D832
S874 S875 S876 S873 S872 S877
R877
390
R876
470
R875
820
R874
1K
R873
1.8K
R872
3.9K
S871
R871
10K
S878
R861
470
Q831
DTC114YKA
D831
SLR342VR
R831
470
S861
P831A
5
4
3
2
1
S851
2
3 1
P851B
3
2
1
R8901
100K
R8902
100K
R8903
100K
R8904
100K
Q802
HFA-12SM50T
62
F11
61
F12
60
NP
59
NP
58
G01
57
G02
56
G03
55
G04
54
G05
53
G06
52
G07
51
G08
50
G09
49
G10
48
G11
47
G12
46
P01
45
P02
44
P03
43
P04
42
P05
41
P06
40
P07
39
P08
38
P09
37
P10
36
P11
35
P12
34
P13
33
P14
32
P15
31
P16
30
P17
29
P18
28
NC
27
NC
26
NC
25
NC
24
NC
23
NC
22
P19
21
P20
20
P21
19
P22
18
P23
17
P24
16
P25
15
P26
14
P27
13
P28
12
P29
11
P30
10
P31
9
P32
8
P33
7
P34
6
P35
5
P36
4
NP
3
NP
2
F21
1
F22
A
1
2
3
4
5
BCDEFGH
U8
U9
U8