Level 3 Repair
8-3-3. Sim Part
Insert SIM card
Yes
No
Check the Pin Soldering
Resoldering and recheck
of SIM300
Yes
Change to the new SIM card.
No
Check the SIM Voltage.
If it doesn`t still work SIM card after changeing
(R312) >= 3.0?
the SIM card, Check the UCP300 (Crack etc)
Yes
END
8-9
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