Sim Part - Samsung SGH-Z540 Service Manual

Flow Chart of Troubleshooting

7-3. Sim Part

Phone can't access SIM Card Phone can't access SIM Card
SIM200 pin 6 = "H"?
After Power ON,
Check SIM_CLK Signal on
SIM200 pin3 in a few second
After SIM card insert,
SIM 200 pin 2 = "H(SIM_RST)"?
Check the SIM Card Check the SIM Card
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
END END
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No No
Check the SIM POWER Check the SIM POWER
No No
No No
7-8
Check the 32KHz OSC Check the 32KHz OSC
Replace PBA Replace PBA