JVC AX-V4BK Service Manual page 23

AX-V4BK
B Adjustments
@ Idling current
(1
(2
(3
(4
)
)
)
)
Set the volume control to minimum during this adjustment.And set surrund mode "OFF".
Turn VR741 and VR742 fully counterclockwies to warm up befor adjustment.
Adjust R771 for left channel, or R772 for right channel, so that the DC
voltmeter becomes 1mV~10mV.