LG -A230 Service Manual page 98

CHECKING FLOW
START
Does the SIM card
support 3V or 1.8V ?
YES
Is Voltage at the pin#1
of J300(J301) 2.85V or 1.8V?
YES
Change the SIM Card
And try again.
Does it work Properly?
YES
SIM card is properly working
LGE Internal Use Only
NO
Change the SIM Card.
This phone supports 3V or 1.8V SIM card.
Voltage output
NO
of VSIM_2V85
Is 2.85V?
YES
Resolder J300 & J301
NO redownload SW.
Does it work
Properly?
YES
SIM card is properly working.
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4. TROUBLE SHOOTING
NO
Change the U101
NO
Change the main board
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