Mitsubishi Electric LC62 CHASSIS XL6500LU Service Manual page 8

Power source system 2
Malfunction of the MAIN PCB ASSY.
The
terminal shield
secondary side are checked.
(Do not use a heat dissipation board as GND.)
When diagnosed as a
STBY5 power error.
Is the RD-SD
lead wire OK?
YES
Remove the SD connector
from the MAIN PCB ASSY.
Is the pin No. 6 of
the RD connector
-6 V or less?
YES
can be used as GND when the terminal voltages and the waveforms on the
Connect the lead wire correctly,
NO
or replace it.
Check the circuits around D983 (on the
NO
POWER PCB ASSY ), and replace it,
if necessary.
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