Dust on the projection screen or using compressed air to blow the tiger skin , lens paper moistened with water and then erase the strong adhesion of dust . Zhengxintai eccentric Fresnel lens first with air blowing dust has dust is difficult to erase the tooth surface with distilled water as the solvent , the use of ultrasonic cleaning works well. Dry cleaning solvent complete with lens paper on optics , carefully back in place.

 

    Air dry areas can be sprayed on the Fresnel lens above the level of chemically pure ethanol antistatic agents , can significantly reduce the absorption of dust .

 

    Domestic projector lamp replacement is relatively simple, but not easy, generally carried out after opening required . Projection lamp is a kind of special light source, in addition to requiring the appearance of a consistent appearance , but also have the appropriate optical parameters, especially the electrical parameters to match the drive plate well , otherwise odd lamp life is short , there may burst. Therefore, the best buy original bulb to bulb manufacturer , quality is guaranteed.