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Troubleshooting Block Diagram
1．Panel doesn't light up.
Supply
with
check if red indicator
lights up in STANDBY
state?
No
Check if 5V is supplied
to X601-PIN3 ?
No
Check
STANDBY
circuits
on
board.
power,
Yes
Press key POWER
on remote control or
the
indicator.
Check if level of
X601-PIN1 on main
board is high?
power
Check
No
board.
Check
power
control circuits on
main board.
Check
control circuits on
main board.
Red
unit,
check
Blue
Yes
backlight
No
power
Check if level of
X601-PIN5 on main
board is high?
Yes
Check power
board.
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