Look at the front, bottom right of the casing.
You have 4 relatively small buttons.
Normaly, the leftmost will bring the on screen menu.
The second should act as a shortcut to the contrast controll.
The third one should then be your brightness controll shortcut.
You then use the second and third to lower / increase the setting.
The rightmost button let you toggle between brightness and contrast adjustments.
Use the leftmost button twice to exit or wait for the timeout to kick in.
The rightmost button is mostly used to activate the various items sub-menus.
The menu let you also adjust the dimention and position of the image, geometric correction, slight rotation correction, change the colour response (warm, cool, medium, user set) and some other settings that you may find usefull.
Electro, December 2011