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Flow Chart of Troubleshooting
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9-7
9-4. Sim Part
CN501 pin 1,5 = "H"?
Phone can't access SIM Card
Resolder or replace U402
Check the SIM Card
END
No
Yes
Yes
Yes
No
Check the Clock
After Power ON,
Check SIMCLK Signal on
pin3 of CN501 in a few second
Yes
No
Replace PBA
After SIM card insert,
CN501 pin 2 = "H(SIM_RST)"?
Yes
Summary of Contents for SGH D900i - Ultra Edition 12.9 Cell Phone 60 MB
Page 36: ...8 PCB Diagrams 8 1 Top ...
Page 37: ...PCB Diagrams 8 2 Bottom ...