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8. Level 3 Repair
8-4-4. SIM Part
Yes
No
END
Change the SIM card. If the SIM card is
still not working, check the U12003,
U5014 (Crack etc)
Check the SIM RST / IO / CLK.
(SIM1 : ZD4008, ZD4011, ZD4009)
(SIM2 : ZD4005, ZD4007, ZD4006)
Is signal ok?
No
Yes
No
Check the UCP5000 (Crack etc)
Check the SIM Voltage.
(C4028,C4030) 1.8V or 3.0V?
Insert SIM card
Yes
No
No
Is SIM socket ok?
Yes
No
No
Replace SIM socket