Samsung SGH-X490 Service Manual page 32

Flow Chart of Troubleshooting
Charging
+DCVOLT_5V
C306 C307 C308
VBAT
U300
1 VL _CHG 8
2 7
IN BATT
3 GND 6
_ACOK
4 5
ISET _EN
G GG G
9 10 11 12
CHARGER IC
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VDD2_2V85
R300
END_OF_CHARGE
CHARGER_OK
CHG_ON
C304
C303
7- 8
R302
MES_BATT
C300
R303