LG KP260 Service Manual page 70

CHECKING FLOW
START
Does the SIM card
support 3V or 1.8V ?
YES
Is Voltage at the TP1
of J200 2.85V?
YES
Change the SIM Card
And try again.
Does it work
Properly?
YES
SIM card is properly working
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Only for training and service purposes
NO
Change the SIM Card.
This phone supports 3V or 1.8V SIM card.
Voltage output
NO
of VSIM LDO
Is 2.85V?
(CHECK TP2)
YES
Resolder J300
NO Redownload SW.
Does it work
Properly?
YES
SIM card is properly working.
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4. TROUBLE SHOOTING
NO
Change the U103
NO
Change the main board
LGE Internal Use Only