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4. TROUBLE SHOOTING
CHECKING FLOW
Is the connection of
LCD with connector on
Main PCB(CN305) ok ?
YES
Is Voltage TP1 2.8V?
YES
Check the soldering of
CN305 on Main PCB?
YES
Check the soldering of
YES
Does LCD work
YES
LCD working well !
LGE Internal Use Only
START
NO
NO
NO
NO
EMI filter ?
NO
properly ?
Reassemble LCD with CN305 connector
Replace U401
Resolder CN305 on Main PCB
Resoldering EMI filter
(FL300,FL301,FL302)
Replace LCD module
- 64 -
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Only for training and service purposes
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