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5-4
SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams
Abnormal charging part
Y
N
Y
Check
the pin 17, 18 of CN301
is around 5 V
Replace TA
N
Y
Check the pin 2 of
U202 is “Low”
Resolder U202, R204, R203
Check the U601
N
Y
Check the pin 1 of
Q201 is “Low”
Resolder Q201, U201
N
Y
Check the
pin 5 of U201 is between
3.2 V and 4.2 V?
Change U201
END
5-4. Charging Part