Brightness
Contrast
Allows you to adjust the brightness or luminance of the backlight.
Press the 
key to increase brightness and press the 
key to decrease brightness (min 0 ~ max 100).
Allows you to adjust the contrast or the degree of difference between darkness and lightness on the monitor screen. and adjust contrast only if you need further adjustment.
Press the 
key to increase contrast and press the 
key to decrease contrast (min 0 ~ max 100).
