Table of Contents
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Checking Flow
START
Does the SIM cards
supports 3V ?
YES
Voltage at pin1 of
J300 is 3V?
YES
Change the SIM Card
And try again.
Does it work
Properly?
YES
Change SIM Card
NO
Change the SIM Card. Our phone
Is supported only 3V SIM card.
Voltage output
NO
of VSIM LDO
Is 3V?
YES
Replace J300
NO
Re-download SW.
Does it work
Properly?
YES
SIM Card will be detected.
- 81 -
4. TROUBLE SHOOTING
YES
Re-solder J300
NO
Change the main board
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Table of Contents
