LG LG-P970 Service Manual

4. TROUBLE SHOOTING
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Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4.10 Charger Troubleshooting
Check Point
- Connection of TA or USB Cable
- Charging current path(RT9524)
- Battery
Charging Procedure
- Connect TA or u-USB Cable
- Control the charging current by RT9524 IC
- Charging current flows into the battery
Troubleshooting Setup
- Connect TA and battery to the phone
Troubleshooting Procedure
- Check the charger (TA or USB Cable) connector
CN101
15
13
11
9
7
5
4
3
2
1
14
12
10
8
6
USB_DP
USB_DM
VCHG
USB_ID
uUSB Connector
Since LGP970 micro USB is located at the TOP of the terminal set, charging current flows via USB FPCB.
The charger IC accepts the current and maximum charging current is set around 945mA.
C506
1u
U502
65
74
83
92
101
11
PGND
VIN BATT
ISET PGB
GND1 CHGSB
LDO GND2
IEOC EN_SET
4
0
5
R
0
6
5
C512
1u
605R
K
00
1
C511
2.2u
K2 505R
K
00
1
105R
VBAT
USB_VBUS
1.8V_VIOVCHG
CHG_EN_SET_N_OMAP
CHG_STATUS_N_OMAP
CHARGER IC
Close to batt. connector
USB
Main
Battery
TP1
TP2

LG LG-P970 Specifications

General

Brand	LG
Model	LG-P970
Category	Cell Phone
Language	English