JVC RX-7030VBK Service Manual page 32

4.20 NC7WZ125K8-X (IC572) : Dual buffer with 3-state outputs
• Pin layout & Block diagram
OE 1
1
A 2
1
Y 3
2
GND 4
4.21 NJM2121M-X (IC527) : Op amp.
• Block diagram
SW. CONTROL 1
A +INPUT 2
A -INPUT 3
V- 4
4.22 NJM2580M-X (IC390) : Video amp.
• Block diagram
1-32 (No.22058)
8 V
CC
7 OE
2
6 Y
1
5 A
2
8 V+
7 B +INPUT
- + - +
6 B -INPUT
5 OUTPUT
VIN1 1
BIAS
GND1
2
VIN2 3
BIAS
GND2 4
VIN3
5
CLAMP
GND3 6
PowerSave
7
14
6dB 75
AMP Driver
13
6dB 75
12
AMP Driver
11
6dB 75
AMP Driver
10
9
BIAS
8
V+1
VOUT1
V+2
VOUT2
V+3
VOUT3
VSAG