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TROUBLE SHOOTING TABLE
No audio output
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.
Replace.
No
Yes
No
Yes
No
Yes
Check IC302 and its peripheral
circuits, and the SP connectors and
speakers.
Checkig the Power Unit
There is no voltage output at
EA connector.
Is EA connector disconnected
or loose?
No
Is AC voltage (85-264V)
applied across the PA
connector?
Yes
Yes
Is TF751 broken?
No
Is R727 broken?
Yes
Replace R727 or Q701.
39
(Continued)
Check the input, the switching circuit
of IC441 and IC442, and their
peripheral circuit.
Check the IC1411 control voltage,and
its peripheral circuits.
Check IC302 and its peripheral
circuits.
Yes
Reconnect the EA connector.
No
Replace F791.
No
There is a short-circuit along
the EA output line. Using a
tester, check the resistance
between each voltage line and
the ground.
XG-P10XE
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