JVC KD-AR5500

1-34 (No.MA140)
5.5 Signal processing section
No sound from either
channel.
Is 9V present at IC365
pin 16?
Compare the L-ch and
R-ch to locate the
defective point.
Is the sound output from
both channels (L, R)?
NO
YES
Is the audio signal
(including sampling
output components)
output to IC191/IC291
pins 1 and 7 during
playback?
Normal
NO
YES
NO
Is 9V present at IC901
pin 10?
YES
Check the connection
between IC901 pin10
and IC365 pin 16.
Check IC901 and its
peripheral circuits.
NO
YES
NO
Check IC191/IC291 and
its peripheral circuits.
YES
Check the power amp.
IC951.
YES
Is the audio signal output
at IC171/IC271 pins 12
and 13 during playback?
NO
Check IC171/IC271 and
its peripheral circuits.