NAD L76 Service Manual page 27

TC9482F (ELECTRONIC VOLUME/IC16)
(SUB)
(SUB)
L-A-GNDA
(LS)
(LS)
L-A-GNDB
(RS)
(RS)
L-A-GNDC 11
TC74 HCU04AFN (INVERTOR /IC31)
NC
2
L-OUTA 3
L-INA 4
5
L-OUTB 6
L-INB
7
8
L-OUTC 9
L-INC 10
Shift register (32BIT)
CS1 12
GND 13
CK 14
PIN ASSIGNMENT (74HCU04AFN : IC40 )
1A 1
1Y 2
2A 3
2Y 4
3A 5
3Y 6
GND 7
VSS
1
1dB
VR
latch
8dB
VR
latch
3 to 7
1dB
decoder
VR
latch
8dB
VR
4 to 13
latch
decoder
1dB
VR
latch
8dB
VR
latch
Strobe generate
Level shift circuit
2-20
VDD TEST
28 27
26 R-OUTA
25 R-INA
24 R-A-GNDA
23 R-OUTB
R-INB
22
Same as L-ch
Circuit
21 R-A-GNDB
20 R-OUTC
R-INC
19
18 R-A-GNDC
circuit
17 CS2
16 STB
DATA
15
14
Vcc
13 6A
12 6Y
11 5A
10 5Y
9 4A
4Y
8
(C)
(C)
(R)
(R)
(L)
(L)