Sim Part - Samsung SGH-Z140 Service Manual

Flow Chart of Troubleshooting

7-3. Sim Part

Phone can't access SIM Card
CN500 pin 1 = "H"?
Check SIM_CLK Signal on
TP506 in a few second
After SIM card insert,
TP507 = "H(SIM_RST)"?
Check the SIM Card
Yes
Yes
After Power ON,
Yes
Yes
Yes
END
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No
No
No
7-6
Check the SIM POWER
Check the 32KHz OSC
Replace PBA