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LGE Internal Use Only
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Only for training and service purposes
4. TROUBLE SHOOTING
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ʹΠΡΪΣΚΘΙΥ͑ι ͣͨ͑͡͡ͽ͑ͶΝΖΔΥΣΠΟΚΔΤ͑͟ͺΟΔ͑͑͟ͲΝΝ͑ΣΚΘΙΥ͑ΣΖΤΖΣΧΖΕ͑͟
ΟΝΪ͑ΗΠΣ͑ΥΣΒΚΟΚΟΘ͑ΒΟΕ͑ΤΖΣΧΚΔΖ͑ΡΦΣΡΠΤΖΤ
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
START
Is I/O Connector(CN201)
well-soldered ?
Check the voltage at
Pin 1 of BQ25040 = 5.6V ?
Is the voltage
at Pin 4 of BQ25040 = 4.9V
YES
YES
YES
Battery is charged?
YES
Charging is
properly operating
NO
NO
NO
Resolder the CN201
(Pin 1 : VCHARGE)
The TA is out of order
Change the TA
Replace the
U205
Replace the main board
CHECKING FLOW
4. TROUBLE SHOOTING
Battery is charged?
NO
Change the battery
Charging is
properly operating
YES
NO