Onkyo DX-C390 Service Manual page 27

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IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION
Q155 : TC74VHCU04FT (Hex inverter)
Block diagram
1A
1
1Y
2
2A
3
2Y
4
3A
5
3Y
6
GND
7
14 Vcc
13 6A
12 6Y
11 5A
Truth table
10 5Y
A
Y
9 4A
L
H
H
L
8 4Y
27 of 63
DX-C390

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