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Level 3 Repair
8-3-3. Sim Part
Phone can't access SIM Card
Yes
SIM200/SIM201 pin1/pin1 or
Replace UCP100 or PBA
No
C210/C220 ≥ 3.0V?
insert SIM card & access it,
and all pin3(SIM_CLK) ≥ 3MHz ?
then must be sim pin1 or C210/C220 = "H"
Yes
After Power ON,
No
Check SIMClk Signal on
Resolder or Replace SIM200,SIM201
pin3 of SIM200 , SIM201 in a few
connector.(Because of not soldering well)
second(method : wiring pin 3 and
checking its waveform using an
oscilloscope)
Yes
After SIM card insert,
SIM200 , SIM201 pin 2(SIM_RST) =
No
"H=3.0V"?
Confirm an another PBA
(method : wiring pin 3 and check
its waveform using an
oscilloscope)
Yes
Check the SIM Card
(look over if it get damaged.)
Yes
END
8-9
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