Samsung SGH-X680 Service Manual page 48

Flow Chart of Troubleshooting
Charging Part
VEXT
CHG_DET
CHG_OFF
R103
JIG_ON
VCCD_1.8
R100
1 VIN
2
_PPR
3 _CHG
4
_EN
C103
C104
VBAT
5
1
VCC
B
4
Y
2
A
U109
GND
3
R107
3
2
1
VBAT
U106
BAT 8
7
IREF
IMIN 6
5
GND
GND
R101 R102
9
R104
VEXT
JIG_ON_IF
R108
10-11
ICHRG