Compaq iPAQ MP3800 User Manual page 17

5. Power on your source (computer, Pocket PC, VCR, etc.) and
launch the software application being used to display images
on the projection screen. If applicable, press the Function key
on the computer designated for external display.
✎
When the startup screen disappears, the video from the attached
computer displays. If there is no incoming video, the "No Source
Found. Please Check Signal Cable" message will display on the
projection screen.
Compaq iPAQ Microportable Projector MP3800 User's Guide
Using the Projector
2–7