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Flow Chart of Troubleshooting
9-8
9-4. Sim Part
T/SIM600 pin 11,14 = "H"?
Phone can't access SIM Card
Check the sim charge pump
Check the SIM Card
END
No
Yes
Yes
Yes
No
Check the clock
After Power ON,
Check SIMCLK Signal on pin15
of T/SIM600 in a few second
Yes
No
Replace PBA
After SIM card insert,
T/SIM600 pin 13 =
"H(SIM_RST)"?
Yes