LG KU250 Service Manual - Page 95
Charger Troubleshooting
View all LG KU250 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 95 highlights
4. TROUBLE SHOOTING 4.10 Charger Troubleshooting ICHARGEOUT +VPWR VBATT BATT_FET_N SI3493DV-E3 Q301 CHARGER R313 0.1 654 Q300 QST4 C1 C2 3 B 1 2 D3 D4 G S D1 D2 654 Q302 QST4 C1 C2 3 B 1 2 Differential lines, route as equal length as possible !! --> ICHARGE , ICHARGEOUT USB_VBUS USB_CTL_N +5V_PWR CHG_CTL_N ICHARGE 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 - 96 -
4. TROUBLE SHOOTING
- 96 -
4.10 Charger Troubleshooting
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
Differential lines, route as equal length as possible !!
-->
ICHARGE , ICHARGEOUT
G
S
SI3493DV-E3
D1 D2
D3
D4
Q301
Q302
QST4
3B
1
C1
C2
2
5
6
4
0.1
R313
2
C2
5
6
4
QST4
B
3
C1
1
Q300
USB_VBUS
ICHARGEOUT
VBATT
BATT_FET_N
+VPWR
ICHARGE
CHG_CTL_N
+5V_PWR
USB_CTL_N