LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 68 -
4.3 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
(1%)
(1%)
(1%)
2V62_VIO
R219
100K
R222
100K
VCHG
6
IMIN
IUSB
7
IVDC
9
13
PGND
10
USB_BYP
VDC
1
VDC_BYP
12
2
VUSB
_CHG
4
_EN
5
3
_PPR
ISL9221
U204
BAT
11
8
GND
R224
16K
2V62_VIO
R225
18K
10K
R223
1u
C256
VUSB_USB
VBAT
100K
R220
C257
1u
_PPR
CHG_EN
_EOC
OVP_VUSB
OVP_VCHG
4.2V~3.69V
3.69V~3.53V
3.53V~3.43V
3.43V~3.35V
TP1
TP2
Содержание KF350
Страница 1: ...Service Manual Model KF350 Service Manual KF350 Date October 2008 Issue 1 0 Internal Use Only ...
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