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SGH-E700 Flow Chart of Troubleshooting
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7-
5
3. Charging Part
Check the U501 pin 4
> 4.9V
Abnormal charging part
END
No
Yes
U501 pin 5 = "H"?
No
Yes
TR500 pin 1 (CHG_ON)
= "L"?
No
Yes
Check the U501 pin 3
≒ 4.2V
No
Yes
Check the the circuit related to
V_EXT_CHARGE
Resolder or replace U501
Check the circuit related to
CHG_ON signal
Resolder or replace U501
Yes