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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
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Checking Flow
START
Voltage at pin1 of
J100 is 1.8V or 3V?
NO
Re-solder J100
YES
Change the SIM Card
And try again.
Does it work
Properly?
YES
Change SIM Card
Re-download SW.
Does it work
Properly?
NO
Change the main board
NO
YES
SIM Card will be detected.