Sim Part - Samsung SGH-Z310 Service Manual

Flow Chart of Troubleshooting

9-4. Sim Part

Phone can't access SIM Card
CN200 pin 1 = "H"?
After Power ON,
Check SIMCLK Signal on
CN500 pin3 in a few second
After SIM card insert,
CN500 pin 2 = "H(SIM_RST)"?
Check the SIM Card
Yes
Yes
Yes
Yes
Yes
END
No
No
No
9-8
Check the SIM POWER
Check the 32k OSC
Replace PBA