LG GD510 - Charging Trouble

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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
GD510 Operational Description Revision A
LG Electronics 64/113 LGE Property
5.3 Charging trouble
Check Points
-Connection of TA (check TA voltage 4.8V)
-Charging Current Path component voltage drop
-Battery voltage
G
1 Charging method : CC-CV
2 Charger detect voltage : 4.0 V
3 Charging time : 2h 10m
4 Charging current : 525 mA
5 CV voltage : 4.2 V
6 Cutoff current : 75 mA
7 Full charge indication current (icon stop current) : 75 mA
8 Recharge voltage : 4.16 V
G G G G G G G G G G G G G G G G G G G G G G G G G G
4.2V~3.69V 3.69V~3.53V 3.53V~3.43V 3.43V~3.35V
TP1
TP2
1uF
C401
1uF
C409
R405
1.2Kohms
130K
R411
3.3Kohms
R406
C411
1uF
100Kohms
R407
100Kohms
R408R409
DNI
BQ25040
U402
5 6
74
83
92
101
11
PGND
IN BAT
ISET _PG
VSS1 CHG
LDO VSS2
EN_SETIFULL
130K
R410
V_BUS
VIO_2V62
VBAT
VIO_2V62
VIO_2V62
_PPR
_CHG_EN
CHG_EOC
RPWRON_EN
RPWRON
(60mA)
1%
1%
(450mA)
Single Charging IC for uUSB
TP1
TP2