LG KS20 - Page 114

LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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VUSB_5.0V
1u
C320
47KR308
10R309
C314
2.2u
VCHG_5.0V
10K R310
Battery Charging Circuit
VUSB_5.0V
0.01u
C305
D302 PG05DBTFC
C304
22u
PG05DBTFCD303
VBAT
VPWR
NUS3116MTR2GU300
BASE1
8
BASE2
7
3
COLLECTOR
DRAIN
5
1
EMITTER1
EMITTER2
2
6
GATE
9
P_COLLECTORP_DRAIN
10
SOURCE
4
D301 PG05DBTFC
VBAT
0.1
R304
VCHG_5.0V
BAT_FET_NISNS_P
ISNS_M
CHG_CTL_N
USB_CTL_N
[ USB part 1 ( Main PCB) ]
[ USB part 2 ( Main PCB ) ]
C314