Flow chart of trouble shooting
5-5
5-3 Charging Part
Abnormal charging part
Replace TA
Check the CN220 pin 1, 2 5 2V ?
No
Yes
Yes
Check the U303 pin 3 5.2 V ?
Resolder
C209, V208, C316
Yes
No
U303 pin 4 = "L" ?
Resolder R328
Yes
No
Resolder components around
U303
Check the U303 pin 5 4.2V ?
END
Yes
No