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Cleaning projector filters
Projector fans keep the system cool. If the filters become clogged the cooling system works poorly and the bulb can overheat, substantially shortening its life. As bulbs are expensive (typically around ?250) keeping the filters clean not only protects the projector but also saves money.
Spare bulbs
Have spare bulbs to hand so they can be replaced quickly. If the projector bulb does not work, neither does the whiteboard.
Ordinary whiteboard markers Do not use ordinary whiteboard markers on most interactive whiteboards. Only a few manufacturers make a point of saying that you can use an ordinary whiteboard marker on their boards (such as the Cambridge Interactive Whiteboard from Hitachi).
Aligning a whiteboard
To align the projector to the whiteboard, you usually touch the board at a series of points (with either a pen or a finger) to inform the computer where the projected image is on the board. This process is often called calibration or orientation. You normally have to realign mobile boards more frequently because they are easier to knock out of alignment.
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