NAD T 741 Service Manual page 34

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AC3 BOARD
U114: 74HCU04
1A
1
1Y
2
2A
3
2Y
4
3A
5
3Y
6
GND
7
AUDIO BOARD
U301: HCF4053BT
Y
1
1B
Y
2
0B
Y
3
1C
Z
4
C
Z
5
0C
E
6
V
7
EE
V
8
SS
14 VAC
13 6A
12 6Y
11 5A
10 5Y
9
4A
8
4Y
LEVEL
S
A
CONVERTER
16 V
DD
15 Z
B
14 Z
A
13 Y
1A
12 Y
0A
11 S
A
10 S
B
9 S
C
S
B
S
C
E
AC3 BOARD
U118, U119: 74HC00
A1
1
2
B1
3
Y1
A2
4
B2
5
Y2
6
GND
7
46
VCC
14
13
B4
12
A4
11
Y4
B3
10
A3
9
Y3
8
Z
A
Y
1A
Y
0A
Z
B
Y
1B
Y
0B
Z
C
Y
1C
Y
0C

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