LCD Brightness Control
You can adjust the LCD brightness in 8 levels.
Controlling the Brightness Using the Keyboard
Adjust the LCD brightness by pressing the Fn + 
key or the Fn + 
key.
The LCD brightness can change up to 8 levels and the brightness increases by 1 level when
pressing the Fn + 
key once.
Maintaining the changed LCD brightness even after turning the computer on again
To maintain the LCD brightness set by using the brightness control keys or through the Power Options, follow the procedures below.
1. Turn the computer on and press the F2 key when the SAMSUNG logo appears on the screen to enter the BIOS Setup.
2. Select the Boot menu and set the Brightness Mode Control item to User Control.
3. Press the F10 key to save the settings and exit Setup.
Saving battery power consumption
Decreases the LCD brightness when the computer is running on battery power to save battery power consumption.
LCD bad pixels principle of laptop computer
Samsung observes the specifications regarding strict quality and reliability of LCD
But in spite of that, it is inevitable that there might be a small number of bad pixels. A large number of bad pixels can cause problems in appearance, but a small number of pixels doesn't affect the computer performance.
Therefore Samsung observes and manages the following dot principles:
-Bright dot : 2 or less
-Black dot : 4 or less
-Combination of Bright and Dark : 4 or less
Instructions for Cleaning the LCD
Clean the LCD panel with a soft cloth lightly moistened with computer cleansing detergent moving in one direction.
Cleaning the LCD panel with excessive force can damage the LCD.
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