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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
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Does the SIM card
support 3V or 1.8V ?
NO
Change the SIM Card.
This phone supports 3V or 1.8V SIM card.
YES
Is Voltage at the pin1
of J100 2.85V or 1.8V?
NO
Change the U100
NO
YES
Resolder J100
YES
Voltage output
of VSIM LDO (2V85_VSIM)
Is 2.85V?
Change the SIM Card
And try again. Does it work
Properly?
YES
SIM card is properly
working
redownload SW.
Does it work
Properly?
NO
Change the main board
NO
YES
SIM card is properly
working.
CHECKING FLOW
4. TROUBLE SHOOTING
4.13 SIM Card Interface Trouble
Содержание GD350
Страница 1: ...Service Manual Model GD350 Internal Use Only Service Manual GD350 Date JANUARY 2010 Issue 1 0 ...
Страница 129: ... 130 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 137: ... 138 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...