JVC EXAD KD-SHX851 Service Manual page 30

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5.5 Signal processing section 3 7 63 1515 0
Is the sound output from
both channels (L, R)?
YES
Normal
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1-30 (No.MA192)
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NO
No sound from either
channel.
YES
Is 9V present at IC165
/IC265 pin 16?
YES
Is 5V present at IC365
pina 2, 3, 9 and 10?
YES
Is 7V present at IC951
pina 3, 5, 7, 9, 17, 19
21 and 23?
YES
Check the speaker
connector and its
connection.
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2 9
8
Compare the L-ch and
NO
R-ch to locate the
defective point.
NO
Is 9V present at IC901
pin 10?
YES
Check the connection
between IC901 pin10
and IC165/IC265 pin
16.
NO
Check the vicinity of
IC365.
NO
Check the power amp.
IC951.
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3 6 7 1 3 1 5
co
.
9 4 2 8
NO
Check IC901 and its
peripheral circuits.
0 5 8 2 9 9 4 2 8
m
9 9
9 9