Sharp XG-C55X Service Manual page 36

XG-C55X
TROUBLE SHOOTING TABLE (Continued)
No audio output
Is the audio signal outputted from
the emmitor of Q306?
Yes
Is its signal inputted into pins(2)
and (15) of IC303?
Yes
Is its signal inputted into pins(12)
and (5) or pins(3) and (13) of IC302?
Yes
Is its signal outputted from pins(14)
and (15) or pins(16) and (17) of
P3102?
Yes
Is its signal inputted into pins(14)
and (15) or pins(16) and (17) of
SC102?
Yes
Check the J431, J421 and their
peripheral circuits.
No
Check the P301 and its peripheral
circuits.
No
Check the IC303 and its peripheral
circuits.
No
Check theIC302 and its peripheral
circuits.
No
Check the Q304 and Q305 and its
peripheral circuits.
No
Check the connection between
P3102 and SC3102.
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