How to Focus a Projector

1. Ensure you can safely reach the projector (e.g., if it is ceiling-mounted).
2. Switch on the projector and allow time for the lamp to warm up (if necessary).
3. Set the projector to receive input from the desired source (computer, VCR, DVD player). Most projectors will cycle through the input channels automatically until they find a signal. If not, press the 'Source' button, sometimes represented by a symbol showing an arrow going into a screen.
4. Adjust the wheels located near the front, or top, of the projection lamp. Traditionally, one wheel adjusts the size of the projection area and the other controls the focus.
5. Correspond the projection image with how the source image is supposed to look. Make the image as clear as possible with the wheels.