Sharp LC-26SH12U Service Manual - Page 22
But The Audio Does - troubleshooting
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UPC - 074000370012
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TROUBLESHOOTING GUIDE THE PICTURE APPEARS, BUT THE AUDIO DOES NOT APPEARS. (ATRFMODE) No Is CP1001 connected? Yes Is there signal at pins Yes 1 and 4 of CP1001? No Is there signal at pins 2 Yes and 5 of IC1001? No Is there signal at pins 1 Yes and 20 of IC1002? No Is there signal at pins Yes 28 and 30 of IC701? No Yes Is there signal at pin 15 of TU2801? No Change TU2801. Connect CP1001. Change SP1001. Check IC1001 and peripheral circuit. Check IC1002 and peripheral circuit. Check IC701 and peripheral circuit. Check IC901 and peripheral circuit. E-2
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TROUBLESHOOTING GUIDE
THE PICTURE APPEARS,
BUT THE AUDIO DOES NOT
APPEARS. (ATRFMODE)
Is CP1001 connected?
Is there signal at pins
1 and 4 of CP1001?
Is there signal at pins 2
and 5 of IC1001?
Is there signal at pins 1
and 20 of IC1002?
Connect CP1001.
Change SP1001.
Change TU2801.
Is there signal at pins
28 and 30 of IC701?
Is there signal at pin
15 of TU2801?
Check IC1001 and peripheral
circuit.
Check IC1002 and peripheral
circuit.
Check IC701 and peripheral
circuit.
Check IC901 and peripheral
circuit.
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
E-2