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Flow Chart of Troubleshooting
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9-7
9-4. Sim Part
CN601 pin 11,14 = "H"?
Phone can't access SIM Card
Resolder or replace U303
Check the SIM Card
END
No
Yes
Yes
Yes
No
Check the Clock
After Power ON,
Check SIMCLK Signal on
pin7 of CN601 in a few second
Yes
No
Replace PBA
After SIM card insert,
CN601 pin 13 = "H(SIM_RST)"?
Yes