4. sim part – Sharp SGH-F250 User Manual

Page 37

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Flow Chart of Troubleshooting

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9-9

9-4. Sim Part

Check the pin 1 of SIM300

Voltage = 3V

Phone can't access SIM Card

Check the circuit related to

SIM300

Check the circuit around SIM300

input circuitry

END

No

Yes

Yes

Yes

No

resolder or change

SIM300

Check the SIM connector's

(SIM300)

connector's to SIM card

No

Check the related circuit of

SIM300

Yes

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