Sharp XG-C58X Service Manual page 37

TROUBLE SHOOTING TABLE (Continued)
No audio output
Is the audio signal outputted from
the emmitor of Q306?
No
Is its signal inputted into pins(2)
and (15) of IC303?
No
Is its signal inputted into pins(12)
and (5) or pins(3) and (13) of IC302?
No
Is its signal outputted from pins(27)
and (28) or pins(29) and (30) of
P3102?
No
Is its signal inputted into pins(14)
and (15) or pins(16) and (17) of
SC3102?
No
Check the J431, J421 and their
peripheral circuits.
Yes
Check the P301 and its peripheral
circuits.
Yes
Check the IC303 and its peripheral
circuits.
Yes
Check theIC302 and its peripheral
circuits.
Yes
Check the Q304 and Q305 and its
peripheral circuits.
Yes
Check the connection between
P3102 and SC3102.
37
XG-C58X
XG-C68X