Question about InFocus ScreenPlay 4805 Multimedia Projector

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Removal of Lens housing

I am trying to get in to clean my fans but I am having trouble getting past the lens housing. Does it just screw off, because I cannot seem to get it loose. I do not want to break the housing, does anyone have any experience with this?

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  • the5golds Jan 12, 2009

    I want to be able to open the projector housing so that I can give the fan a good clean before I put in a new bulb

  • sagertronics May 11, 2010

    If you are referring to the removal of the zoom and focus ring's... They can be simply pulled straight off. You can use a medium to small straight screwdriver to gently pry them off being careful to keep them as straight as possible (distribute the prying force evenly) There are no screws etc.


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You can't get the front off without taking the top and back off. first, unscrew the 4 brass screws and 4 silver screws from the bottom and the 2 or 3 silver screws from the back. there are 3 clips that you can see through the vents at the top of the rear panel. use a small flathead screwdriver to unclip them and pull the back off. now unplug the plugs on both sides in the back. as you pull the pot up from the rear, pull out the bottom of the front panel and it'll come out as one piece. now you can give it all a good cleaning. use canned air. it's dry and there are no particles in it. when you replace the parts, detatch the front from the top using a pair of needle-nose pliers and unclip the front. put the top on first, plug in the plugs, then put on the front and back, and replace the screws.

Posted on Dec 08, 2009

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There are two rings, the inner focus and the outer zoom. They are just friction fit, pull the inner focus off first then the outer zoom then you can take the front off.

Posted on Dec 08, 2009

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Hi Nutty Prof

You will have to open up the unit by unscrewing the screws at the bottom and taking off the top cover of your PB6100.

Right behind the lens is the Lightengine ( where the dust collects )

Take off the cover of the Lightengine by unscrewing the two screws at the top of it . Then blow out the inside of the light engine with Air in a can ( available from most good PC shops )
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If the dust particles still show after this ( which I doubt it will ) then you will have to take it to a Service Centre to get cleaned out as you will not be able to reassemble the lens once taken apart - it is a HUGE job !

Thanks for using Fixya and Good Luck !

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