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Flow Chart of Troubleshooting
9-9
9-3. Charging Part
Yes
Resolder or replace U403
Check the circuit related to
TA_nCHG signal
Check the circuit related to
VEXT_FET_5V and U403
Yes
No
Check the C434 or
U403 pin 12
≒
4.2V
Yes
No
Check R415
= 'L' ?
Yes
No
END
Abnormal charging part
Check the C433
> 4.3V
Summary of Contents for GT-B7300B
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