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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. Trouble shooting
- 70 -
5.3 Charging trouble
Check Points
-Connection of TA (check TA voltage 5.6V)
-Charging Current Path component voltage drop
-Battery voltage
1 Charging method : CC-CV
2 Charger detect voltage : 4.0 V
3 Charging time : 2h 30m
4 Charging current : 420 mA
5 CV voltage : 4.2 V
6 Cutoff current : 100 mA
7 Full charge indication current (icon stop current) : 100 mA
8 Recharge voltage : 4.15 V
(1005,10V,K,X5R)
C214 39p
GND1 GND2
IN OUT
ICVFP10181E301FR
FL200
47
47
1
R229
1800FB201
FB206 1800
FB203 1800
47
R230
VBAT
0
1R228
6
7
8
9
VCHG
11
12
13
14
15
16
17
18
19
2
20
21
22
3
4
5
CN200
1
10
C215 1u
1800FB202
FB200 1800
(1%)
(1608,25V,K,X5R)
(1005,10V,K,X5R)
(1005,10V,K,X5R)
(1005,10V,K,X5R)
(1%)
CHARGING IC OVP
(1%)
(1608,25V,K,X5R)
C213
1u
1
VDC_BYP
12
2
VUSB
_CHG
4
_EN
5
3
_PPR
BAT
11
8
GND
6
IMIN
IUSB
7
IVDC
9
13
PGND
10
USB_BYP
VDC
ISL9221U201
VCHG_OVP VBUS_OVP
VBUS_USB
C210
1u
VCHG
C211
1u
2V62_VIO
100K
R209
2V0_VRTC
R226
DNI
R216
33K
R213
10K
1u
C212
100K
R215
VBAT
R214
16K
C209
1u
CHG_EN
EOC
4.2V~3.75V 3.75V~3.64V
3.64V~3.45V 3.45V~3.35V
TP1
TP2