Sony AVD-S50 Service Manual page 79

IC607 MC14052BDR2
(ANALOG I/O Board)
2X0 1
2X2 2
2XCOM 3
2X3 4
2X1 5
INH 6
VEE 7
VSS 8
IC851 MSM9202-05GS-KDR1 (DISPLAY Board)
P1 1
PORT
DRIVER
P2 2
AD2
3
AD
AD1 DRIVER
4
SEG1 5
SEG2 6
SEG3 7
SEG4 8
SEG5 9
SEG6
10
SEG7
11
SEG8 12
SEG9 13
SEG10 14
SEG11 15
SEG12 16
SEG13
17
SEG14
18
SEG15 19
SEG16 20
SEGMENT
SEG17 21
DRIVER
SEG18 22
SEG19
23
SEG20 24
SEG21 25
SEG22 26
SEG23 27
SEG24 28
SEG25 29
SEG26
30
SEG27 31
SEG28 32
16
VDD
15 X2
14 X1
13 XCOM
12 X0
11 X3
10 A
9 B
ADRAM
2bit x 16
ADDRESS
SELECTOR
READ
ADDRESS
COUNTER
DIGIT
CONTROL
GRID
DRIVER
DUTY
CONTROL
CGROM DCRAM
35bit x 248 8bit x 16
CGRAM
35bit x 8
IC655 SN74HC153ANS-E05
(DIGITAL I/O Board)
STROBE A
VCC 2C3 2C2 2C1 2C0
2G SELECT
16 15 14 13
2C3 2C2 2C1 2C0
2G
1G
1C3 1C2 1C1 1C0
1 2 3 4
STROBE B 1C3 1C2 1C1 1C0
1G SELECT
DATA INPUTS
WRITE
ADDRESS
COMMAND
COUNTER
DECODER
CONTROL
CIRCUIT
TIMING
TIMING
GENERATOR2 GENERATOR1
AVD-S50/S50ES
DATA INPUTS
OUTPUT
2Y
12 11 10 9
2Y
B B A A
B B A A
1Y
5 7
6 8
OUTPUT GND
1Y
64 VDD
63 DA
8bit
SHIFT 62 CP
REGISTER
61 CS
60 RESET
59 OSC1
OSCILLATOR
58 OSC0
57 GND
56 VFL
55 COM16
54 COM15
53 COM14
COM13
52
COM12
51
50 COM11
49 COM10
48 COM9
47 COM8
46 COM7
COM6
45
COM5
44
43 COM4
42 COM3
41 COM2
40 COM1
39
SEG35
38
SEG34
37 SEG33
36 SEG32
35 SEG31
34 SEG30
33 SEG29
79