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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. TROUBLE SHOOTING
5.3 Charging trouble
Check Points
-Connection of TA (check TA voltage 4.8V)
-Charging Current Path component voltage drop
-Battery voltage
1 Charging method : CC-CV
2 Charger detect voltage : 4.0 V
3 Charging time : 2h 40m
4 Charging current : 380 mA
5 CV voltage : 4.2 V
6 Cutoff current : 110 mA
7 Full charge indication current (icon stop current) : 110 mA
8 Recharge voltage : 4.16 V
4.2V~3.69V 3.69V~3.53V 3.53V~3.43V 3.43V~3.35V
C308
1U
2V62_VIO
R310
100K
2V62_VIO
2V62_VIO
R314
100K
C323
1U
VBUS_USB
U300
BQ25040
5
6
7
4
8
3
9
2
10
1
11
PGND
IN
BAT
ISET
_PG
VSS1
CHG
LDO
VSS2
EN_SET
IFULL
DNI
R317
1U
C325
VBAT
R318
1.2k
R319
2K
_PPR
_CHG_EN
_EOC
RPWRON_EN
(10V,K,X5R, 1005)
ECZH0001215
(25V,K,X5R, 1608)
ECZH0003503
TP1
TP2
Содержание AR140B
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