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6-
4
SGH-V205 Flow Chart of Troubleshooting and Circuit Diagrams
4. Charging Part
The pin #17, #18 of CN300 is
TA_VEXT
ㆃ
5V?
Abnormal charging operation
The pin #2 of U101 is "low"?
Replace TA or Check CN300
Check the U101
Check the Q101
END
No
Yes
Yes
Yes
No
No
The pin #3 of Q101 is "low"?
The pin #5 of U101 is 3.2~4.2V"?
Check the U101
No
Yes
The ICHRG = 1V(during charging)
and
ㆃ
180mV(full charging)?
No
Solder again or change R111
Yes