Sharp LC-26SH12U - 26" LCD HDTV Service Manual page 22

THE PICTURE APPEARS,
BUT THE AUDIO DOES NOT
APPEARS. (ATRFMODE)
Is CP1001 connected?
Yes
Is there signal at pins
1 and 4 of CP1001?
No
Is there signal at pins 2
and 5 of IC1001?
No
Is there signal at pins 1
and 20 of IC1002?
No
Is there signal at pins
28 and 30 of IC701?
No
Is there signal at pin
15 of TU2801?
No
Change TU2801.
TROUBLESHOOTING GUIDE
No
Yes
Yes
Yes
Yes
Yes
E-2
Connect CP1001.
Change SP1001.
Check IC1001 and peripheral
circuit.
Check IC1002 and peripheral
circuit.
Check IC701 and peripheral
circuit.
Check IC901 and peripheral
circuit.