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9-3. Charging Part
Abnormal charging part
Abnormal charging part
Check the U505 pin10 >
U505 pin5(CHG_INDICATE)=
Check the U505 pin 9
Yes
Yes
4.9V
Yes
"H"?
Yes
Yes
U505 pin6 = "H"?
Yes
≒ 4.2V
Yes
END
END
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No
No
Check the circuit related to VEXT_5V
No
No
Charging is completed
Check the circuit related to
No
No
No
No
9-5
Flow Chart of Troubleshooting
USB_VBUS_5V
Replace BTC401
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