Display Board - Sony HCD-GT111 Service Manual

HCD-GT111/GT222/GT444/GT555
– DISPLAY Board –
IC1101 NJU3427FH2
52 51 50 49 48
RESET SERIAL
CIRCUIT BUFFER
NC 1
RD0 2 ADDRESS DISPLAY
COUNTER DATA RAM
RD1 3
RD2 4
RD3 5
SEGMENT
RD4 6
DATA LATCH
RD5 7
RD6
8
RD7 9
RD8 10
RD9 11
RD10
12
RD11 13
14 15 16 17 18 19 20
– MOTOR DRIVE Board –
IC001 LB1846M
VCC 1
2
IN4
3
IN3
CONTROL
LOGIC
IN1 4
IN2 5
THERMAL SHUTDOWN CIRCUIT
56
47 46 45 44 43 42
OSC
INSTRUCTION TIMING DUTY
DECODER COUNTER COUNTER
TIMING
DECODER
TIMING/SEGMENT SELECTOR
HIGH VOLTAGE DRIVER
21 22 23 24 25 26
10
OUT4
9
OUT3
MOTOR
DRIVE
8 OUT1
7
OUT2
6
GND
41 40
39 NC
38 DR35
37 DR34
36 DR33
35 DR32
34 DR31
33 DR30
32 DR29
31 DR28
30 DR27
29 DR26
DR25
28
27 DR24