Question about 3M MP 8640 Multimedia Projector

3 Answers

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

Posted by susan Clark on

  • 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.



3 Answers


  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

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



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



  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 6,966 Answers

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

Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Connect laptop cable

Hi Anna,

It is impossible to connect to a projector with just a usb cable. You will need a VGA cable (for older models of projectors and laptops) or an HDMI cable which can be used with newer models.

Best of luck to you.

Jan 26, 2014 | Hitachi CP-X260 LCD Projector

1 Answer

New projector will not accept power point presentation from my laptop. screen shows foreign language info. First time usage

I bought this same one and I had problems with it too and it was good I kept my reciept. I ended up buying a AAXA one. It works great. The model I bought is the M1 Ultimate and I have been very pleased with it. But still working on advancing my presentation skills. has anybody else tried the M1? the website is

Mar 05, 2011 | Vivitek D825MX Projector

1 Answer

Screen saver appears on projector, but not power point presentation what can I do?

This signal is not being sent to the projector. It could be a couple items. Check the VGA cable by swapping out with another. You may need to hold the FN key and hold the CRT/LCD at the same time. Press the CRT/LCD a few times while all the time still holding the FN key. The laptop may not have a key labeled CRT/LCD it may have an icon of screen, laptops differ.

Jun 10, 2010 | Dell 2300MP Multimedia Projector

1 Answer

The projector is going into standby mode 30% of the way into the presentation. This is not my projector so I'm guessing at the setup. Can you help. I'm using my laptop with a PowerPoint presentation,...

check the settings. sometimes there is a shut off timer if it isn't used for a specific amount of time. you can turn that setting off in the menu (if it has it). otherwise, it may be overheating and needs to be cleaned out with canned air.

Jan 13, 2010 | 3M MP 8730 Multimedia Projector

1 Answer

Changing of slides during P.Point presentation

why not get a wireless mouse? you can get them for power point presentations ;-)

Oct 09, 2009 | 3M X75 Multimedia Projector

1 Answer

Using a 3M S55 projector, I am unable to convey image from the computer to the projector

I#m presuming you're using a laptop. You need to switch the VGA output on. On a Dell it's Fn + F8. You can probably right click on the Desktop>Properties and set it up there

Aug 31, 2009 | 3M S55 Multimedia Projector

1 Answer

Dell 1209S Projector "Searching for Signal" with Laptop

Try fn + f8, then wait and see if the projector detects the port (15 seconds or so) if no change, try Fn+F8 a 2nd time

Jul 28, 2009 | Dell Latitude D800 Notebook

1 Answer

I have a Dell 3400MP Projector. When I plug it into my Dell Latitude D810, the screen size expands from 100% to 6400%. Not sure what is this causing this?

This is because the screen resolution on the laptop is much higher than the maximum supported by the projector. Try dropping your screen resolution on the laptop to 800 x 600 before plugging in the projector

Jun 22, 2009 | Dell 3400MP Multimedia Projector

1 Answer

Differing size display when using Dell 3200mp LCD projector

Once your display of the projector is set( all connection to computers via cables is done), then all the display settings remain with the source i.e. the laptop.

You will need to set all your laptops to the correct display properties. This you can do by either going to presentation mode or on Window XP you can simply go on to your desktop and right click > go to properties>go to setting> press display 2 and set the screen resolution as per your projectors resolution and enjoy. ( for information: display1 is the resolution meant for your laptop)

Please do rate this solution and Thanks for usinf FixYa!

Mar 09, 2009 | Dell 3200MP Multimedia Projector

1 Answer

Searching for signal

There is an "Auto search for signal" setting on the projector settings menu. This may be turned off.

Oct 04, 2007 | Dell 2200MP Multimedia Projector

Not finding what you are looking for?
3M MP 8640 Multimedia Projector Logo


Ask a Question

Usually answered in minutes!

Top 3M Office Equipment & Supplies Experts

The Knight
The Knight

Level 3 Expert

76587 Answers


Level 2 Expert

223 Answers

Tom Chichester

Level 3 Expert

61759 Answers

Are you a 3M Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides