Samsung GT-B7702 Service Manual page 37

Flow Chart of Troubleshooting
2)Slave
Phone can't access SIM Card
Yes
No
SIM502 pin 1 = "H"?
Resolder or replace U504
Yes
After Power ON, No
Check SIMCLK Signal on
Check the Clock
pin3 of SIM502 in a few second
Yes
No
After SIM card insert,
Replace PBA
SIM502 pin 2 = "H(SIMRST_2)"?
Yes
Check the SIM Card
Yes
END
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