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Manuals
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LG Manuals
Cell Phone
U250
Service manual
Charger Troubleshooting - LG U250 Service Manual
Lg cell phone user manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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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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Table of Contents
Troubleshooting
TROUBLE SHOOTING
72
Power ON Troubleshooting
93
Charger Troubleshooting
95
USB Troubleshooting
98
SIM Detect Troubleshooting
99
Camera Troubleshooting
101
Keypad Backlight Troubleshooting
104
Main LCD Troubleshooting
105
Troubleshooting Download Errors
128
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