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Flow Chart of Troubleshooting
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9-5
9-3. Charging Part
Check the U402 pin 38
> 4.9V
Abnormal charging part
END
No
Yes
U400 pin 34(AUX_ON)
= "L"?
No
Yes
Check the U402 pin 46
≒ 1.4V
No
Yes
Check the circuit related to
V_EXT_CHARGE
Check the circuit related to
AUX_ON signal
Resolder or replace U402
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 ...