Sim Part - Samsung SGH-J400 Service Manual

Flow Chart of Troubleshooting

9-2. Sim Part

Phone can't access SIM Card
Yes
No
CD600 VDD_SIM_3.0V = "H"?
Check the SIM POWER
Yes
No
After Power ON,
Check C634(SIM_CLK Signal) Check the Clock
in a few second
Yes
No
After SIM card insert,
Replace PBA
SIM_RST (C635) = "H"?
Yes
Check the SIM Card
END
9-3
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