Sony DSX-GS900 Service Manual page 48

DSX-GS900
– KEY Board –
IC9201 BU97550KV-ME2
60 59 58 57 56 55 54 53
KI5/S63 61
KEY SCAN
KEY BUFFER
COM8/S64 62
COM7/S65 63
COM6/S66 64
COM5/S67 65 COMMON
DRIVER
COM4 66
COM3 67
COM2 68
COM1 69
VDD 70
POR
CLOCK/TIMING
VSS 71
GENERATOR
S68 72
SDO 73
S69 74
OSC_IN/S70 75
SERIAL
INTERFACE
SCE 76
SCL 77
SDI 78
S1/P1/G1 79
S2/P2/G2 80
48
52 51
LCD VOLTAGE
GENERATOR
VLCD
VLCD1
VLCD2
VLCD3
VSS
CONTROL
REGISTER
SHIFT
REGISTER
PWM
REGISTER
SEGMENT DRIVER/LATCH
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
50 49 48 47 46 45 44 43 42 41
40 S42
39 S41
38 S40
37 S39
36 S38
35 S37
34 S36
33 S35
32 S34
31 S33
30 S32
29 S31
28 S30
27 S29
26 S28
25 S27
24 S26
23 S25
22 S24
21 S23
Sony CONFIDENTIAL
For Authorized Servicer
SYS SET