Battery Charging Troubleshooting - LG KF390 Service Manual

4. TROUBLE SHOOTING

4.7 Battery Charging Troubleshooting

BATT_FET
S2 S1
G
SIA411DJ
Q301
D5 D4 D3 D2 D1
Charging Procedure
- Connect TA or USB Cable
- Control the charging current by PM6658 IC
- Charging current flows into the battery
Troubleshooting Setup
- Connect TA and battery to the phone
Check Point
- Connection of TA or USB Cable
- Charging current path
- Battery
Troubleshooting Procedure
- Check the charger (TA or USB Cable) connector
- Check the charging current Path
- Check the battery
LGE Internal Use Only
ICHARGEOUT
+VPWR
BATT_FET_N
VBATT
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