Charger Troubleshooting - LG TracFone LG840G Service Manual

4.9 Charger Troubleshooting

* Charging Procedure
- Connect TA or USB Cable
Control the charging current by QSC6270
- Charging current flows into the battery
* Check Point
- Connection of TA or USB Cable
Charging current path
Battery
START
Check the pin and battery
Connect terminals of I/O
connector
Connection OK?
Yes
Is the TA voltage 5.1V?
Check TP1
Yes
Is it charging properly?
No
Change the main board
[ Charger Troubleshooting Flow ]
LGE Internal Use Only
* 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
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4. TROUBLE SHOOTING
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Only for training and service purposes
TP1