JVC RX-D Series Training Book page 53

CHECK 7 AMP DRIVE IC's
PWM
input
CN202
PIN 2: AMP_-B
PIN 3: AMP_-B+12V
820
Ohm
AMP_-B
MASTER CLOCK PCB
'AMP_-B+12V' is the Vcc for all AMP drive ICs.
AMP_-B+12V
800 Ohms