LG LG-E410 - Charging Trouble Shooting

4. TROUBLE SHOOTING
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Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4.11 Charging Trouble Shooting
1. Charging Procedure
- Connect TA or u-USB Cable
- Control the charging current by BQ25040 IC
- Charging current ows into the battery
2. Check Point
- Connection of TA or USB Cable
- Charging IC (BQ25040)
- Battery
3. Troubleshooting Setup
- Connect TA and battery to the phone
4. Troubleshooting Procedure
- Check the charger (TA or USB Cable)
- Check the OVP Circuit
- Check the Charging IC
- Check the battery
VA4001
ZD4003
1uC4002
VBUS_CHG_IN
22pC4001
FL4000
1
IN OUT
GND1 GND2
ZD4004
ZD4001
FL4001
63
4
1 5
2
CN4000
11
10
9
5
4
3
2
1
8
7
6
USB_ID
MINIABB_DP
MINIABB_DM
2mm
VBUS 2mm
u-USB Connector
TA (5.1V, 700mA)
1uC4005
4.7K
R4002
VREG_PROX_3.0V
VREG_MSME_1.8V
C4077
2.2u
U4002
33 28
27
26
13
25
11
10
24
23
31
22
29
21
20
14
12
7 2 9 5
32
19
18
17
8
30
6
16
4
3
15
1
OUT1
AUD1
VIN
OUT3
AUD2
GND1
SCL
LED2
MIC
CAP
RES
DSS
OUT4
LED3
OUT2
LED1
DP
U2
UID
D+
SDA
D-
INT\
VBUS1
VBUS2
LED4
DN
VBAT1
U1
VBAT2
EXPDET
GND2
PGND
1u
C4006
C4000
1u
4.7K
R4001
CAM_AVDD_2.8V
10K
R4003
CAM_DVDD_1.2V
CAM_IOVDD_1.8V
C4075
1u
1u
C4074
1u
C4076
GND
VREG_MSME_1.8V
USBH_DP
USBH_DM
VBAT
MINIABB_INT
MINIABB_I2C_SCL
MINIABB_I2C_SDA
VBUS_CHG_IN
VCHG_VBUS
USB_ID
MLED[4]
MLED[1]
MLED[3]
MLED[2]
MINIABB_DP
MINIABB_DM
Mini ABB_NS
TA
Main Battery