If you press the Source button on the projector, you see a menu of available sources.
Source button
Press the u or d button to go up or down the menu, then press the 
Select button.
Note: If an image does not appear, see “Problem Solving” on page 55.
To temporarily turn off the image and darken the screen, press the Blank button on the remote control. Press the Blank button again to return to normal viewing.
24 Setting Up the Projector