Charging Part - Samsung SGH SGH-D500 Service Manual

3. Charging Part

Abnormal charging part
Check the U503 pin 6
Q201 pin 1(AUX_ON)
Check the U503 pin 2
Yes
> 4.9V
Yes
U503 pin 8 = "L"?
Yes
= "L"?
Yes
≒ 4.2V
Yes
END
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Check the circuit related to
No
No
Resolder or replace U503
Check the circuit related to
No
No
Resolder or replace U503
7-5
Flow Chart of Troubleshooting
V_EXT_CHARGE
AUX_ON signal