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Flow Chart of Troubleshooting
9-3. Sim Part
Phone can't access SIM Card
CN1 pin 11 = "H"?
After Power ON,
Check SIM_CLK Signal on CN1
pin15 in a few second
After SIM card insert,
CN1 pin 13 = "H(SIM_RST)"?
Check the SIM Card
Yes
Yes
Yes
Yes
Yes
END
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No
No
No
9-4
Check the SIM POWER
Check the 32KHz OSC
Replace PBA
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