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Flow Chart of Troubleshooting
9-4. Sim Part
Phone can't access SIM Card
Yes
No
CN500 pin
Check the sim power
C1(VREG_USIM_3V)="H"?
Yes
No
After Power ON,
Check the OSC500
Check CN500 pinC3(USIM_CLK)
in a few second
Yes
No
After SIM card insert,
Replace PBA
CN500 pinC2(USIM_RST)= "H"?
Yes
Check the SIM Card
Yes
END
9-7
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