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8. Level 3 Repair
8-4-25-1. Charging Part
Wire Charging (Normal/Fast)
Charging Sequence
Start C4021 or C4024
= 5V or 9V
Battery is Charging?
END
Resolder or Replace U7003
NO
Reconnect TA or USB
or Replace IFC4000
NO
TA / USB Insert
Check the voltage
C7087 = 5V or 9V
NO
Resolder or Replace U4050
YES
Resolder or Replace U7000
NO
YES
Resolder or Replace U7000
NO