NAD L76 Service Manual page 25

NJM2296M (VIDEO SW / IC21, 22, 23)
V+
16
Vin1
13
20K
Vin2
9
20K
Vin3
7
20K
Vin4 5
20K
Vin5
3
20K
SW3
OPA2134UA / NJM 2068MD
(OP AMP / IC12~15, 37~42, 82)
PIN CONFIGURATION
•
1
A
2
B
3
4
SW2
10
S1
S2
S4
S3
4 6
SW4
PIN FUNCITON
8
1. A OUTPUT
2. A-INPUT
3. A+INPUT
7
4. V
5. B+INPUT
6
6. B-INPUT
7. B OUTPUT
5 8. V
SW1 SW5
14 2
S5
20K
S6
20K
S7
20K
12
8
V-
GND
NJU3713G (EXPANDOR : IC 84)
BLOCK DIAGRAM
10
DATA
11
CLK
12
STB
13
CLR
2-18
6.2dB 75
1
Amp dirver
6.2dB 75
15
Amp
dirver
75
6.2dB
11
dirver
Amp
Controller Circuit
Vout1
Vout2
Vout3
14
P1
15
P2
16
P3
17
P4
1
P5
8
P11
9
P12