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Flow Chart of Troubleshooting
7-6
7-4. Charging Part
The pin#17, #18 of
CN701 is TA_VEXT ≒
5V ?
Abnormal charging operation
Replace TA or Check CN701
No
END
Yes
The pin#8 of U101 is 3.2~4.2V ?
Check the U301
No
Yes
No
Solder again or change R310
Yes
The ICHRG = 1.4V(during
charging) and ≒ 180mV(full
charging) ?