91
VX8350
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Checking Flow
Checking Flow
SETTING : Connect the battery and the charging adaptor (TA) to the phone
1. Check the Battery contact pin [ CON600 ]
2. The battery may have the problem
Change the battery and try again.
Voltage at +VPWR
of C420 = 4.2V?
START
YES
Voltage at +V_CHAR
of D600 = 4.8V?
NO
The charging adaptor (TA) is out of order.
Change the charging adaptor.
Replace U600, D601
Voltage at C410 = 4.8V?
YES
YES
YES
NO
NO
YES
Replace PMIC [ U401 ]
The logic level at CHG_MODE
of Q600 = Low?
NO
Replace Q600
Is the battery
charged
NO
Charging will operate properly
YES
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