LG M6100 Service Manual - Page 85
Change the SIM Card. Our phone
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4. TROUBLE SHOOTING Checking Flow START Does the SIM cards NO Change the SIM Card. Our phone supports 2.85V ? supports only 3V SIM card. YES Voltage at pin1 of NO J301 is 2.85V? YES Voltage at VSIM of U101 Is 2.85V? NO YES Replace J301 or check soldering of components Change the SIM Card NO And try again. Does it work Properly? YES Change SIM Card Redownload SW. NO Does it work Properly? YES SIM Card will be detected. Change the main board - 86 -
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4. TROUBLE SHOOTING
- 86 -
START
Does the SIM cards
supports 2.85V ?
NO
Change the SIM Card. Our phone
supports only 3V SIM card.
YES
Voltage at pin1 of
J301 is 2.85V?
NO
YES
NO
Replace J301 or
check soldering of components
YES
Voltage
at VSIM of U101
Is 2.85V?
Change the SIM Card
And try again.
Does it work
Properly?
YES
Change SIM Card
Redownload SW.
Does it work
Properly?
NO
Change the main board
NO
YES
SIM Card will be detected.
Checking Flow