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Ophthalmic Technician

Category - Medical Equipment

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If streaks are visible on a projection screen, what should be done in order to alleviate the problem?

Buy a new screen
Clean the projector’s focusing bulb
Change the projector’s bulb
Restart the projector

Explanation

Answer: B - Clean the projector’s focusing bulb

If streaks are visible on a projection screen, the projector’s focusing bulb should be cleaned. The most common cause for streaks on a projection is improper cleaning. If the focusing bulb or glass slides are cleaned with a moist cloth, the streaks that are left behind will be projected on to the screen.

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