JVC KD-G220 Schematic Diagrams

(No.MA236)1-19
5.5 Signal processing section
5.5.1 Signal processing section
(For KD-AR270,KD-G220,KD-G227,KD-G323,KD-G324,KD-G325 and KD-G326)
5.5.2 Signal processing section
(For KD-G321,KD-G322 and KD-G327)
No sound from either
channel.
Is 9V present at pin 24
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
IC581 during playback?
Normal
YES
NO
YES
NO
Check IC581 and its
peripheral circuits.
NO
Is 9V present at pin 13
of IC901?
YES
Check the connections
between pin 24 of IC161
and pin 13 of IC901.
NO
Check IC901 and its
peripheral circuits.
Is the audio signal output
at pin 18 and pin 19 of
IC161 during playback?
YES
NO
Check IC161 and its
peripheral circuits.
YES
Check the power
amplifier IC301.
Is the audio signal output
at pin 18 and pin 19 of
IC171 during playback?
No sound from either
channel.
Is 9V present at pin 32
of IC171?
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
IC581 during playback?
Normal
YES
NO
YES
NO
Check IC581 and its
peripheral circuits.
NO
Is 9V present at pin 13
of IC901?
YES
Check the connections
between pin 32 of IC171
and pin 13 of IC901.
NO
Check IC901 and its
peripheral circuits.
YES
NO
Check IC171 and its
peripheral circuits.
YES
Check the power
amplifier IC301.

JVC KD-G220 Specifications

General

Brand	JVC
Model	KD-G220
Category	Car Receiver
Language	English