Charger Troubleshooting - LG -P715 Service Manual

4.11 Charger Troubleshooting

1
CN102
10 8
1
6 2
3
7 4
5
11 9
Battery Connector
CN4001
1
2
3
4
Charging Procedure
- Connect TA or u-USB Cable
- Control the charging current by PM8029 IC
- Charging current flows into the battery
Check Point
- Connection of TA or USB Cable
- Charging current path
- Battery
LGE Internal Use Only
MICRO USB IO
USB_ID
C111
1n
D102
D103
C4045
D4001
22p
G1
4
G2
5
D4003
DNI
FL1
IN OUT
GND1 GND2
2
D106
FL101
6
2 4
P2 P4
1 3
P1 P3
5
D104
Charger IC
2mm
C4048 C4049
47u
C4046 0.1u
100p
R4026
VREG_MSME_1.8V
80.6K
R4036
VBAT_TEMP
0
ZD4001
R4015
BATT_ID
100
BATT_ID_PULLUP
Troubleshooting Setup
- Connect TA and battery to the phone
Troubleshooting Procedure
- Check the charger (TA or USB Cable) connector(No.1)
- Check the EMI Filter (No 2)
- Check the charging current Path(No.3~4)
- Check the battery Terminal and battery (No.5)
- 88 - Copyright © 2013 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
5V_VCHG
USBH_DM
USBH_DP
Main Battery
+VPWR
3
Only for training and service purposes