Charging Part - Samsung GT-B7702 Service Manual

9-3. Charging Part

Abnormal charging part
Check the U504 pin
U504 pin D5(AUX_ON)
Check the U504 A1
Yes
A53,A54,A55
> 4.9V
Yes
= "L"?
Yes
≒ 1.4V
Yes
END
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No
Check the circuit related to
No
Check the circuit related to
No
Resolder or replace U504
9-6
Flow Chart of Troubleshooting
USB_VBUS_5V
AUX_ON signal