Aiwa CDC-Z137 Service Manual page 31

IC601 LC75853NW (KEY Board)
48 47 46
KS6 49
KEY SCAN
KI1 50
KI2 51
52
KI3
KEY BUFFER
KI4 53
KI5
54
TEST 55
VDD 56
VDD1 57
VDET
VDD2 58
59
VSS
CLOCK
OSC 60
GENERATOR
DO 61
2
CE
62
C B
INTERFACE
CL
63
DI 64
1 2
45 44 43 42 41 40 39
COMMON
DRIVER
CONTROL
REGISTER
SHIFT REGISTER
SEGMENT DRIVER & LATCH
3 4 5 6 7 8 9
38 37 36 35 34 33
10 11 12 13 14 15 16
CDC-Z137
32 S32
31
S31
30
S30
29
S29
28 S28
27 S27
26
S26
25
S25
24
S24
23 S23
22
S22
21
S21
20 S20
19
S19
18
S18
17 S17
31