NAD L 70 Service Manual page 18

NJM2296M (VIDEO SW / IC51, 52, 53)
BLOCK DIAGAM (NJM2296M /MAIN IC96)
V+
16
Vin1
13
20K
Vin2
9
20K
Vin3
7
20K
Vin4 5
20K
Vin5
3
20K
4
SW3
OPA2134UA / NJM 2068MD (OP AMP / IC16~21, IC45~53)
SW2 SW1
10
S1
S2
S4
S3
6
SW4
•
1
A
2
3
4
SW5
14 2
S5
20K
S6
20K
S7
20K
12
8
V-
GND
PIN FUNCITON
8
1. A OUTPUT
2. A-INPUT
3. A+INPUT
7
4. V
B
5. B+INPUT
6
6. B-INPUT
7. B OUTPUT
5 8. V
2-19
6.2dB 75
1
Amp dirver
6.2dB
75
15
Amp
dirver
75
6.2dB
11
dirver
Amp
Vout1
Vout2
Vout3