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Flow Chart of Troubleshooting
7-3. Charging Part
Abnormal charging part
Check the U503 pin 1
Check the U503 pin 10
Y e s
> 4.9V
Y e s
U503 pin 5 = " L " ?
Y e s
U503 pin 3 = " L " ?
Y e s
¡ Ö 4.2V
Y e s
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
7-6
V _ E XT _ C HARGE
AUX_ O N signal
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