There are certain problems that crop up again and again for LCD projectors, and you can save yourself a lot of headache if you recognize the following issues.
- "The image on the screen is purple/green/some strange color." Usually this just means your VGA cable (the blue/black cable going to your document camera or laptop) is loose. Secure it on both ends. If this does not fix the issue, a replacement cable from the media center may help; see a media staff member.
- "The 'Temp' light is on and the fan is running hot." Check to make sure your fan vent (usually next to the lens) is not blocked by other equipment/books/papers. Also check your filter. The filter usually slides out from under your lens or from a door that opens next to your lens. If it is dusty, the hot air is not properly venting. Filters should be checked two or three times per year.