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Flow Chart of Troubleshooting
7-4
3. Sim Part
CN701 pin 1,5 = "H"?
Phone can't access SIM Card
Check the SIM POWER
Check the SIM Card
END
No
Yes
Yes
Yes
No
Check the 32k OSC
After Power ON,
Check USIM_CLK Signal on
CN701 pin3 in a few second
Yes
No
Replace PBA
After SIM card insert,
CN701 pin 2 =
"H(USIM_RESET)"?
Yes