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2)Slave
Phone can't access SIM Card (slot2)
SIM800 pin 1,5 = "H"?
After Power ON,
Check SIMCLK Signal on
pin3 of SIM800 in a few second
After SIM card insert,
SIM800 pin 2 = "H(SIM_RST_1)"?
Check the SIM Card
Yes
Yes
Yes
Yes
Yes
END
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
No
Resolder or replace UPL800
No
No
10-9
Flow Chart of Troubleshooting
Check the Clock
Replace PBA
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