JVC RX-D Series Training Book page 21

POWER SUPPLY 3/5
Waveform (3) at 'AMP_+/-B' switch regulator
Yellow at pin 2 of IC101 (R1110)
About
11v.
Blue at S of Q1101- channel 1
DC 0v line
Always about 11v different between pin 2 and pin4 of IC101.