NAD T 163 Service Manual page 38

T89C51RD2
KEYBOARD: U201 & U202
BA7625
COMPOSITE VIDEO BOARD: U4202 & U4203
S-VIDEO BOARD: U4102 & U4103
74HC4051
KEYBOARD: U208
S-VIDEO BOARD: U4102, U4103
COMPOSITE VIDEO: U4201
74HC4051
4
1
CHANNELS
IN/OUT
6
2
COM OUT/IN
3
7
CHANNELS 4
IN/OUT
5
5
INH
6
V
7
EE
GND
8
38
V
16
CC
2
15
1
CHANNELS
14
IN/OUT
0
13
3
12
A
11
B
10
C
9