LG KP260 - Preferred Networks, GPRS Attach, and USB Connection

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4. TROUBLE SHOOTING
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Only for training and service purposes
4.6 Charging Trouble
CN300
TP1
TP2
U304
EUSY0351601
CHARGE(TA+USB)
C353
1u
VCHG_IN
VBAT
R340
18K
OVP_VCHG OVP_VUSB
10K
R339
R338
15K
VDC_BYP
VUSB
2
4
_CHG
5
_EN
_PPR
3
ISL9221U304
BAT
11
8
GND
6
IMIN
7
IUSB
9
IVDC
PGND
13
USB_BYP
10
1
VDC
12
VBUS_IN
100K
R336
C352
1u
C354
1u
_CHG_EN
TEST POINT
CIRCUIT
Figure 4.5
TP2
TP3
TP1