LG GB210 - Page 63

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