Flow Chart of Troubleshooting
9-3. Charging Part
Abnormal charging part
Check the C367,R302
Check the U309 pin 9
Yes
> 4.9V
Yes
Check U309 pin 5
= 'L' ?
Yes
≒ 4.2V
Yes
END
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Check the circuit related to
No
No
Check the circuit related to
No
Resolder or replace U309
9-8
V_EXT_5V and U309
CHG_ING_Nn signal