How To Clean Projection System

How to clean projection system and make projector workd well--by http://www.vvme.com

When the projector is used for long time,dust will accumulate inside it, leading to projection spot, vague projection and so on.

After opening the case, we can use cold air from blower or dust collector to get rid of the dust accumulated inside the projector.

The main components that need cleaning: Fresnel lens,condensing lens and camera lens.