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4. Sim Part
Phone can't access SIM Card
SIM400 pin 1,5 = "H"?
Check SIMCLK Signal on
pin3 of SIM400 in a few second
After SIM card insert,
SIM400 pin 2 = "H(SIM_RST)"?
Check the SIM Card
Yes
Yes
After Power ON,
Yes
Yes
Yes
END
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
No
Check the sim charge pump
No
No
7-9
Flow Chart of Troubleshooting
Check the Clock
Replace PBA
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