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6-
4
SGH-S200 Flow Chart of Troubleshooting
4. Charging Part
The pin #17, #18 of CN300
is TA_VEXT
ㆃ
5V?
Abnormal charging oper ation
The pin #3 of U101 is "low"?
Replace TA or Check CN 300
Check the U 101
Check the Q101
EN D
No
Yes
Yes
Yes
No
No
The pin #3 of Q101 is "low"?
The pin #5 of U 101 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