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LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
START
Insert SIM
The soldering of SIM
connector is OK?
The DBB(U101) is broken.
Change the board.
The all paths connected
to S200(main) are OK?
The SIM Card is OK (plat)?
Re-solder the
S200 of the main key ..
SIM card is broken.
Change the SIM Card.
Re-solder the
R200,R205,C202,VA200,VA201,VA202
of the main PCB
Check the TP1,TP2
, TP3, TP4
YES
NO
YES
YES
YES
YES
NO
NO
NO
POWER ON
Check connection of the Main, Main key,
Main FPCB
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