4-2
4. Troubleshooting
4-2. No Power
Symptom Though the power swtich on, the LED power off and the screen is blank.T
Major
checkpoints
Check Power cable.
Check whether the Lamp connector is connected correctly to the IP.
Check whether the power cable is connected correctly to the MAIN.
Check whether the Function cable is connected correctly to the MAIN.
T
T
T
T
Diagnostics
Main Board Front
CN1001
C1109
Yes
No
LAMP off, power indicator
LED red color?
Check a connection a
power cable.
Yes
No
Does proper DC 13V appear
at DC5V.
Change a Assy PCB Power.
Yes
No
Does proper DC13V appear
at C1004?
Change a Assy PCB Power.
Yes
No
Does proper DC3.3V, 1.2v appear
at C1109?
Check IC1013, IC1005.
Change a main PBA.
No
A power is supplied to set?
Check a other function.(No picture
part) Replace a lcd panel.
Caution Make sure to disconnect the power before working on the IP board.
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