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4. TROUBLE SHOOTING
CHECKING FLOW
START
Is the connection of
FPCB with connector on
PCB(CN600) ok ?
YES
Is Voltage pin8 of U405 2.8V?
YES
Check the soldering of
CN600 ?
YES
Change the FPCB and try again
YES
Check the soldering of
EMI filter ?
YES
Does LCD work
properly ?
YES
LCD working well !
LGE Internal Use Only
NO
Reassemble FPCB with CN600 connector
NO
NO
Resoldering CN600
NO
Resoldering EMI filter(FL600~FL604)
NO
Replace LCD module
Copyright © 2008 LG Electronics. Inc. All right reserved.
- 54 -
Replace U405
Only for training and service purposes
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