Read Sharp PG-F312X (serv.man5) Service Manual online
XR-32S/XR-32X/PG-F212X/PG-F312X
5 – 2
Main PWB check
Is 12.8 V applied to TL1703?
NO
Go to “Power supply ballast PWB check”.
YES
Is approx. 5.5 V applied to TL1702?
NO
Go to “Power supply ballast PWB check”.
YES
Is 12.5 V applied to TL3819?
NO
Check IC3808 and Q3805 and peripheral circuits.
YES
Is 1.2 V applied to TL3813?
NO
Check Q3802 and peripheral circuits.
YES
Is 3.3 V applied to TL3802?
NO
Check L3801 and peripheral circuits.
YES
Is 2.5 V applied to TL3801?
NO
Check L3802 and peripheral circuits.
YES
Is 5 V applied to TL3814?
NO
Check L3806 and peripheral circuits.
YES
Is 3.3 V applied to TL1792?
NO
Check IC1792 and peripheral circuits.
YES
Is 12 V applied to TL1761?
NO
Check IC1761 and peripheral circuits.
YES
Is 1.8 V applied to TL3809?
NO
Check IC3803 and peripheral circuits.
YES
Is 1.2 V applied to TL3811?
NO
Check Q3801 and peripheral circuits.
YES
Is 2.8 V applied to TL3807?
NO
Check IC3807 and IC3802 and peripheral circuits.
YES
Is 2.8 V applied to TL3808?
NO
Check IC3802 and peripheral circuits.
YES
Is 3.3 V applied to TL2051?
NO
Check that it is set to the NORMAL side. Or remove S2001.
YES
Is rectangular wave of 20 MHz applied to TL2201?
NO
Check X2201 and IC2204 and peripheral circuits.
YES
Check IC2001, IC2262, IC2232 and peripheral circuits.
Click on the first or last page to see other PG-F312X (serv.man5) service manuals if exist.