Sharp LC-32DV24U Service Manual page 32

THE PICTURE APPEARS,
BUT THE AUDIO DOES NOT
APPEARS. (AT RF MODE)
Is CP302 connected?
Yes
Is there signal at
pins 1 and 4 of
No
Is there signal at pins 2
and 5 of IC302?
No
Is there signal at pins
AA3 and AA4 of
IC2801?
No
Is there signal at pins 1
and 2 of IC6551?
No
Is there signal at pin
3 of IC6552, IC6553?
No
Is there signal at pin
5 of TU5801?
No
Change TU5801.
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No
Yes
Yes
Yes
Yes
Yes
Yes
Connect CP302.
Change SP301 and SP302.
Check IC302 and peripheral
circuit.
Check Connection of CP4302.
Check IC6551 and
peripheral circuit.
Check IC6552, IC6553 and
peripheral circuit.
Check IC5801 and peripheral
circuit.
E-2