Sony DPP-MS300 Marketing, Service Manual

Page: 54 / 88

5-57
– MP-40 Board –
IC1531 SN74LVCC4245APWR
1
2
3
4
5
6
7
8
9
10
23
22
21
20
19
18
17
16
15
14
A1
VCCA
A2
A3
A4
A5
A6
OE
VCCB
B1
B2
B3
B4
B5
B6
B7
A7
11
12 GND
13 GND
GND
BO
24 VCCB
AO
T/R
IC1532 – 1534 74VHC244MTCX
IC1535 74VHCT244MTCX
– MD-40 Board –
IC1900 LB1644
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
1G
1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1
GND
2A1 1Y4 2A2 1Y3 2A3 1Y2 2A4 1Y1 2G Vcc
1 2 3 6 7
9
10
11
8
14 13 15 16
V
Z
1
IN4 IN1 OUT4 OUT1 V
CC
2
GND
12
GND
V
CC
1
IN2 IN3
OUT2
5
GND
4
GND
OUT3
V
Z
2
INPUT LOGIC BLOCK INPUT LOGIC BLOCK
PRE
DRIVER
PRE
DRIVER
TSD