No Audio Output - Sharp XV-DW100U Service Manual

XV-DW100U
TROUBLE SHOOTING TABLE
Are there audio signal inputs at pins
(2) and (23) of IC1301?
Are there audio signal outputs at pins
(1) and (2) of P301?
Are there audio signal outputs at pin
(6) of IC302?
If the voltage at pin (7) of IC302 is not
as specified, check Q7082, Q7081
and their peripheral circuits.

No audio output

Yes
Yes
Yes
Check IC302 and its peripheral
circuits, and the SP connectors and
speakers.
(Continued)
No
Check the input, the switching circuit
of IC441 and IC442, and their
peripheral circuit.
No
Check the IC1411 control voltage,and
its peripheral circuits.
No
40
Check IC302 and its peripheral
circuits.