Charger Troubleshooting - LG GU280 Service Manual

4.8 Charger Troubleshooting

☞ Charging Procedure
- Connect TA or USB Cable
- Control the charging current by QSC6240
- Charging current flows into the battery
☞
Check Point
- Connection of TA or USB Cable
- Charging current path
- Battery
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Only for training and service purposes
Start
Check the pin and battery
Connect terminals of I/O
connector
Connection OK?
Yes
Is the TA voltage 5.1V?
Yes
Is it charging properly?
NO
Change the main board
[ Charger Troubleshooting Flow ]
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4. TROUBLE SHOOTING
☞
Troubleshooting Setup
- Connect TA and battery to the phone
☞
Troubleshooting Procedure
- Check the charger (TA or USB Cable) connector
- Check the charging current Path
- Check the battery
NO
Change I/O connector
NO
Change TA
Yes
END
LGE Internal Use Only