29
Does PWM signal appear at
IC501 pin , , , ?
(Refer to Fig. G-1.)
YES
NO
166 167 174 175
Replace IC501.
Replace IC601.
Does Audio signal appear
at IC601 pin , ?
(Refer to Fig. G-2.)
YES
YES
NO
3
12
Is the voltage of IC601
pin and 2.5V?
9
NO
Check the C602.
8
Does “H” signal appear at
IC501 pin ?
YES
NO
108
Check the IC501 pin
and then replace IC401.
108
Check C702.
YES
YES
YES
Are L-ch, R-ch signals
appear at JK701 and
Audio Line out connector
each?
NO
Check JK701 and
L701,L703.
Does Audio signal appear
at IC701 pin , ?
NO
1
7
Is the voltage of IC701
pin 2.5V?
6
NO
Replace IC701.
G. During Audio CD play, LED flickers, but Speaker is silent.
G-1
