Power Source System 1 - Mitsubishi Electric XD8100U Service Manual

Power source system 1

Projector doesn't enter the stand-by mode.
Is the lead wire
between the PFC PCB ASSY
and the POWER PCB ASSY
connected properly?
Yes
Is LSTBY5 (5V) output?
(2-pin of the RH and SH
connectors)
Yes
Check the connections of the
PCB-MAIN and the PCB-KEY.
Or, the MAIN PCB ASSY and the KEY
PCB ASSY have a failure.
LED indicator doesn't illuminate.
Check the STBY5 (5V).
Connect the lead wires properly.
No
Replace the wires if damaged.
Failure in the POWER PCB ASSY.
No
Check F9F0 (PFC PCB ASSY) and
F9G0 (POWER PCB ASSY). If they
are blown, eliminate the cause of the
failure and replace them.
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