14
KMA-1080/KMA-980
KMA-1080/KMA-980
CONFIRMATION OF IDLING CURRENT OF AMP UNIT
■
R429 (L ch)
R430
(R ch)
TP413–TP415 (L ch)
TP414–TP416 (R ch)
Open (cut off)
20 mV – 350mV
(DC)
R429
R430
TP416
TP414
TP415
TP413
Rear side
Front side
Item
Condition
Test point
Rating
Remark
Idling current No input signal
Wait for 2–3 minutes
TP413–TP415 (L ch) DC 20–350mV If measured voltage exceeds 350 mV,
open (cut off) R429 (L ch), R430 (R ch)
and reconfi rm the voltage.
Attention
If the measured voltage exceeds
350mV after an amplifi er repair, fi rst
check for a defective component be-
fore cutting the bias resistor.
TP414–TP416 (R ch)