Charger Troubleshooting - LG U250 Service Manual

Lg cell phone user manual
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4. TROUBLE SHOOTING

4.10 Charger Troubleshooting

ICHARGEOUT
+VPWR
VBATT
BATT_FET_N
Charging Procedure
- Connect TA or USB Cable
- Control the charging current by PM6650 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
CHARGER
R313
Differential lines, route as equal length as possible !! --> ICHARGE , ICHARGEOUT
- 96 -
0.1
6
5
4
C1
C2
1
2
6
5
4
C1
C2
1
2
USB_VBUS
Q300
QST4
B
3
USB_CTL_N
+5V_PWR
Q302
QST4
3 B
CHG_CTL_N
ICHARGE

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