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1. No Power
(1) Symptom
1) It is not discharged minutely from the module.
2) Light does not come into the front LED.
(2) Check process
Is inserted a plugged
in power cord?
Is the Line Filter
and Power Board Cable
connected?
Is the fuse of PSU
normal?
Is it connected
that PSU and P1100 in
Main B/D?
After all cables connect is removed to PSU, the AC voltage
marking is authorized on manual.
When ST-BY 5V, +15V are not operated, replace PSU.
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TROUBLESHOOTING
Yes
Yes
Yes
No
Plug in the power cord.
No
Connect the Cable.
No
Replace the Fuse.
No
Connect the Cable P1100.
If there is normal status,
Replace main board.
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