Charger Troubleshooting - LG CU405 Service Manual

4. TROUBLE SHOOTING

4.7 Charger Troubleshooting

Differential lines, route as equal length as possible !! --> ICHARGE , ICHARGEOUT
Charging Procedure
- Connect TA
- Control the charging current by PM6650 IC
- Charging current flows into the battery
Check Point
- Connection of TA
- Charging current path
- Battery
Troubleshooting Setup
- Connect TA and battery to the phone
Troubleshooting Procedure
- Check the charger connector
- Check the charging current Path
- Check the battery
LGE Internal Use Only
Charging Current Flow
Pass
Tr
(ON)
6 5 4
C1 C2
1 2
SI3493DV-E3
Q401
4.2~4.25V
Battery FET
TA
+5V_PWR
(4.6V)
B
3
CHG_CNT_N
ICHARGE
ICHARGEOUT
+VPWR
VBATT
Main
Battery
(ON)
BATT_FET_N
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