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7-3. Charging Part
Abnormal charging part
Check the U300 pin 2
Yes
> 4.9V
Yes
U300 pin 4 = "H"?
Yes
U300 pin 5 = "L"?
Yes
Check the C300
≒ 4.2V
Yes
END
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No
Check the the circuit related to
No
Resolder or replace U300
No
Check the circuit related to
No
Resolder or replace U300
7-7
Flow Chart of Troubleshooting
+DCVOLT
CHG_ON signal
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