IBM Partner Pavilion iLC300 - Manual (Page 17)

4. If the image is not square, adjust the keystone by using the buttons on the
keypad.
Press the upper Keystone button to reduce the upper part of the image, and
press the lower Keystone button to reduce the lower part.
5. Adjust the Contrast or Brightness in the Picture menu.
Chapter 2. Setting up the projector 7