JVC RX-D Series Training Book page 55

Troubleshooting With Unplugged CN111 2/2
Check analog audio and PWM on all channels
FR
On back
FL
PWM BOARD 1
CN521
CN683
Pin-Ch
1-FR
3-FL
Analog audio
4-SW
0.6-1.2v p-p
5-SR
(8Channels)
6-SL
7-C
8-SBR
9-SBL
C
SL
FR channel
SBL
SR
PWM BOARD 2
PWM signal
4.2-4.6v p-p
Master clock
SBR