LG GB210 - Charging Trouble

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
TEST POINT
CIRCUIT
Figure 4.5
TP1TP2
CN300
TP3
U303
4.6 Charging Trouble
EUSY0351601
1%
VCHG_IN
OVP_VCHG
R339
10K
C350
1u
C352
1u
VBUS_IN
R341
18K
10K
R340
U303
BAT
11
8
GND
6
IMIN
7
IUSB
9
IVDC
PGND
13
USB_BYP
10
1
VDC
12
VDC_BYP
VUSB
2
4
_CHG
5
_EN
_PPR
3
ISL9221
100K
R338
VBAT
OVP_VUSB
C351
1u
_CHG_EN
TP2
TP3
TP1