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Level 3 Repair
8-3-4. Sim Part
Phone can't access SIM Card
Yes
No
Resolder R210, C230
SIM200 pin 1
insert SIM card & access it,
or R210 "H=3.0V" ?
then must be sim pin1 or R210 "H=3.0V"
Yes
After Power ON,
No
Resolder or Replace SIM200 connector.
Check SIM_CLK_1 Signal on
pin3 of SIM200 in a few second
(Because of not soldering well)
(method : wiring pin 3 and
checking its waveform using an
oscilloscope)
Yes
After SIM card insert,
No
SIM200 pin 2(SIM_RST_1) =
"H=3.0V"?
Confirm an another PBA(U200)
(method : wiring pin 2 and check
its waveform using an
oscilloscope) oscilloscope)
Yes
8-13
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