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Manuals
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LG Manuals
Cell Phone
U370
Service manual
Charger Troubleshooting - LG U370 Service Manual
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Also See for U370
:
User manual
(130 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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4. TROUBLE SHOOTING
4.9 Charger Troubleshooting
USB_VBUS
ICHARGE
ICHARGEOUT
+VPWR
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
LGE Internal Use Only
Battery Charging Circuit
10
VBATT
1
+5V_PWR
2
3
4
U304
9
P_DRAIN
P_COLLECTOR
8
EMITTER1
BASE1
7
EMITTER2
BASE2
6
COLLECTOR
GATE
5
SOURCE
DRAIN
NUS3116MTR2G
Copyright © 2007 LG Electronics. Inc. All right reserved.
- 90 -
CHG_CTL_N
USB_CTL_N
BATT_FET_N
VBATT
Only for training and service purposes
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Table of Contents
Troubleshooting
TROUBLE SHOOTING
70
Power ON Troubleshooting
86
Charger Troubleshooting
89
USB Troubleshooting
91
SIM Detect Troubleshooting
92
Camera Troubleshooting
95
LCD module Troubleshooting
98
Troubleshooting Download Errors
123
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