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Flow Chart of Troubleshooting
10-11
10-3. Charging Part
Yes
Resolder or replace U502
Check the circuit related to
TA_nCHG signal
Check the circuit related to
EXT_5V and U502
Yes
No
Check the U502 pin 9
≒
4.2V
Yes
No
Check U502 pin 5
= 'L' ?
Yes
No
END
Abnormal charging part
Check the C506
> 4.9V
Summary of Contents for SGH-I740c
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