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8. Level 3 Repair
8-4-4. Sim Part(SIM1)
Insert SIM card
Change to the new
SIM card. Work
nomal?
Yes
No
Check the U3003 and U5004
No
END
Check the SIM
Voltage.
C5098 >= 1.8 or
3.0 V
Check that SIM
RST/IO/CLK.
(ZD5001,ZD5002,
ZD5007)
has signal
Check the UCP400 (Crack etc)
No
Yes
Yes
Is SIM socket ok?
Resoldering SIM socket pad
No
Yes
Yes
END
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