Question about 3M MP 8640 Multimedia Projector

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3M Multimedia Projector

I have just bought a 3M MP8020 projector for use of power point presentations from my laptop which is a Dell Latitude d400 I have 2 problems. The first is the projector is not recognizing the laptop. When connected it says 'Sync is out of range' I do not have any manuals or a remote and cannot find any drivers on the internet. Second problem is purple dots over quite a lot of the projection. Any help on this would be appreciated. Many Thanks Sue

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  • sreel Nov 27, 2007

    I am facing the problem with My laptop containing Vista Ultimate Operating System when it is connected to projector the picture is not standing regularly. the display is switching off and switching in regular intervals. I am having HITACHI CP-S840 Multimedia Projector. Kindly send the solution to this problem and How to solve the problem.

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I have a problem with my overhead projector over heated and has blown the bulb how do i get inside to fix the bulb

Posted on Mar 04, 2008

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Sue, The purple dots randomly scattered are dust particles on the lenses. I have the same problem on mine. I need to remove the cover and then carefully clean the lenses on all three colors with a lint free cloth. This is a problem with these projectors, as they do not have sealed lenses. I need to do this about twice a year.

Posted on Sep 29, 2007

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Hi Sue, On your first concern, a possible reason for the 'Sync is out of range' is because your laptop's resolution is just too high for the projector to handle. You may have to manually lower down your screen resolution (right click on a clear area of your desktop, click on properties, settings tab, move bar of screen resolution towards the left). Try different settings that will give you best performance without the projector rejecting the input signal. Am not sure about your second concern though, offhand your description sounds like video noise. You may have to check that your connectors are firmly plugged in. A longshot is to remove any possible source of interference like wireless phones including your mobile, WiFi AP and the likes. Perhaps you give the first suggestion a try and see if the purple dots disappear when you have the projector running ok. Further you may have to reset your projector if it's got one. Normally it's a small button clearly marked RESET somewhere at the rear of the unit. Hope this works out for you. Pls comment/post back should you need further information. Good luck and kind regards.

Posted on Aug 11, 2007

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