JVC KD-G420 Service Manual

1-16 (No.MA232)
5.1.5 Signal processing section
No sound from either
channel.
Is 9V present at pin 36
of IC161?
Compare the L-ch and
R-ch to locate the
defective point.
Is the sound output from
both channels (L, R)?
YES
NO
Is the audio signal
(including sampling
output components)
output to pins 1 and 7 of
IC572 during playback?
Is the audio signal output
at pin 19 and pin 20 of
IC161 during playback?
Normal
YES
NO
YES YES
NO
Check IC572 and its
peripheral circuits.
NO
Check IC161 and its
peripheral circuits.
YES
Check the power
amplifier IC301.
NO
Is 9V present at pin 10
of IC901?
YES
Check the connections
between pin 36 of IC161
and pin 10 of IC901.
NO
Check IC901 and its
peripheral circuits.

JVC KD-G420 Specifications

General

Brand	JVC
Model	KD-G420
Category	Car Receiver
Language	English