Charging Part - Samsung SGH-X480 Service Manual

F low Chart of Troubleshooting

4. Charging Part

A bnorm al charging operation
The pin#8 of U 101 is 3.2~4.2V ?
The IC H R G= 1.4V (during
charging) and ¡Ö180m V (full
The pin#17, #18 of
C N 300 is TA _V E X T ¡Ö
5V ?
Y es
Y es
charging) ?
Y es
E N D
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N o
R eplace TAor C heck C N 300
N o
C heck the U 101
N o
7- 4
Solder again or change R 111