Service manual

CDX-GT65UIW
25
– KEY Board –
IC971 74LVC2G66DC-125
3
1
1Y
1Z
2E
GND
VCC
1E
2Z
2Y
4
2
5
7
6
8
IC981 LC75879PT-US-H
60
S62
59
S61
58
S60
57
S59
56
S58
55
S57
54
S56
53
S55
52
S54
51
S53
25
S27
26
S28
23
S25
24
S26
27
S29
28
S30
29
S31
30
S32
31
S33
32
S34
33
S35
34
S36
3
P3/S3
4
P4/S4
1
2
5
P5/S5
6
P6/S6
7
P7/S7
8
P8/S8
9
S9
10
S10
11
S11
12
S12
66
COM2
65
COM1
73
VSS
72
VDD2
71
VDD1
70
VDD
78
DI
79
P1/S1
80
P2/S2
77
CL
76
CE
74
S69/OSCI
69
S68
75
INH
COMMON
DRIVER
CLOCK
GENERATOR
CCB INTERFACE
SHIFT REGISTER
CONTROL
REGISTER
SEGMENT DRIVER & LATCH
13
S13
14
S14
15
S15
16
S16
S17
S18
17
18
S19
S20
19
20
S21
S22
35
S37
36
S38
37
S39
38
S40
21
S23
22
S24
39
S41
40
S42
50
S52
49
S51
48
S50
47
S49
46
S48
45
S47
44
S46
43
S45
42
S44
41
S43
64
S66
63
S65
62
S64
61
S63
68
S67/COM4
67
COM3