Question about Office Equipment & Supplies
It is recommended only cleaning the outside of most projector lenses. However if obstructions have worked their way into the case and will not leave the lens, you may be able to remove the bulb (carefully, following the manuals instructions for bulb replacement)
And gently spray inside towards the lens where the bulb was. However, keep in mind the display itself sits between the bulb and the lenses,
Some projectors have air fins along the sides of the lens, some air in these fins can also loosen debris away from the lens.
Ensure the front of the lens is not dirty and that the focus has been properly adjusted before cleaning the back of the lens.
Posted on Dec 02, 2014
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Posted on Jan 02, 2017
Tranlucent dark spot on Optoma image. Looks like something is on the lens.Off center--top to bottom. Cleaned lens, blew out case, changed bulb, still with dark spot.
Posted on Nov 15, 2009
remove the lens rings using a flathead screwdriver and carefully pop them off. remove the 4 brass screws and the 4 silver screws from the bottom, and the 2 silver screws from the back. lift up the back panel from the bottom just a little. using a flathead screwdriver, pop open the 3 clips through the top vent of the rear panel. remove the rear panel. unplug the wire harness on the left and the small one on the right. lift up the top panel from the back a little bit and the front panel from the bottom. they will come off as one piece. be sure to blow out all of the dust with canned air. it's dry and there won't be any foreign particles in it. when you put everything back together, release the clip that attach the front to the top. put the top back on first, plug in the wire harnesses, then put on the front and rear panels. replace the screws. done.
Posted on Dec 08, 2009
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Your projector needs little maintenance. The only thing you
need to do on a regular basis is
to keep the lens clean.
Never remove any parts of the projector except the lamp.
Contact your dealer if other parts
Cleaning the lens
Clean the lens whenever you notice dirt or dust on the
• Use a canister of compressed air to remove dust.
• If there is dirt or smears, use lens-cleaning paper or
moisten a soft cloth with lens cleaner
and gently wipe the lens surface.
Never rub the lens with abrasive materials.
Nov 27, 2010 | BenQ MP623 DLP Projector
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