XG-C330X/C430X
5 – 2
Main PWB check
Is 6 V applied to TL1711, 13 V to
TL1712 and 17V to TL1727?
NO Go to "Power supply ballast PWB check".
YES
Is approx. 6 V applied to TL1709? NO Check IC1710 and peripheral circuits.
YES
Is 1.5 V applied to TL1705? NO Check IC1706 and peripheral circuits.
YES
Is 3.3 V applied to TL1706? NO Check IC1704 and peripheral circuits.
YES
Is 2.5 V applied to TL1704? NO Check IC1702 and peripheral circuits.
YES
Is 5 V applied to TL1708? NO Check IC1707 and peripheral circuits.
YES
Is 3.3 V applied to TL1703? NO Check IC1708 and peripheral circuits.
YES
Is 15.5 V applied to TL1707? NO Check IC1705 and peripheral circuits.
YES
Is5 V applied to TL1701? NO Check IC1701 and peripheral circuits.
YES
Is 3.3V applied to TL1702? NO Check IC1703 and peripheral circuits.
YES
Is 5.4V applied to TL2075? NO Check IC2001 and peripheral circuits.
YES
Is 3.3 V applied to pin(2) of S2701? NO Check that it is set to the NORMAL side.
Or remove S2701.
YES
Is rectangular wave of 14.318 MHz
sent to X2003 pin(3)?
NO Check X2003 and peripheral circuits.
YES
Is rectangular wave of 48 MHz sent
to X2201 pin(3)?
NO Check X2201 and peripheral circuits.
YES
Check IC2001, IC2201, IC2202 and
peripheral circuits.
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