LCD Brightness Control
You can adjust the LCD brightness in 8 levels.
Adjusting LCD Brightness Using Keyboard
Press the Fn+ 
or Fn+ 
to adjust the brightness of LCD.
The LCD brightness has eight levels of degree.
By pressing the Fn+ 
, the LCD gets brighter by one level of degree.
(for example, in Customized mode)
In this mode, you can change the brightness and device setting details.
Adjusting LCD Brightness Using Samsung Battery Manager
Appropriate LCD brightness is set for each mode in Samsung Battery Manager. In user settings mode, you can select the brightness level.
Click Start > All Programs > Samsung> Samsung Battery Manager >Samsung Battery Manager.121