If the "No Signal" message appears, try the
following solutions: 
- 
Press the
Source Search or Search button and wait a few seconds for an
image to appear.
- 
Turn on
the connected computer or video source, and press its play button
to begin your presentation, if necessary.
- 
Check the
connection from the projector to your video sources.
- 
If you are
projecting from a laptop computer, make sure it is set up to
display on an external monitor.
- 
If
necessary, turn the projector and the connected computer or video
source off and then on again.