LG B2000 Service Manual

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4 . TROUBLE SHOOTING
Checking Flow
START
Does the SIM cards
supports 3V?
Voltage at pin1 of
J300 is 3V?
Change the SIM Card
And try again.
Does it work
Properly?
Change the SIM Card. Our Phone
supports only 3V SIM card
Voltage
at VSIM of U101
Is 3V?
Redownload SW.
Does it work
Properly?
Replace J300 or check
soldering of components
Change the main board
Change SIM Card
SIM Card will be detected
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES

LG B2000 Specifications

General

Brand	LG
Model	B2000
Category	Cell Phone
Language	English