MPC 4500 print not even

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  • adween shaari
    Senior IT Technician
    • May 2012
    • 47

    #1

    [Misc] MPC 4500 print not even

    my machine when use print colour not even on top. can someone give me a solution.
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  • Lagonda
    Service Manager

    Site Contributor
    1,000+ Posts
    • Aug 2008
    • 1649

    #2
    Re: MPC 4500 print not even

    I suspect it is the same problem as the post about light copies on a MP C3500. Check the transfer roller is parallel with the contact point on the Image Transfer Belt.
    At least 50% of IT is a solution looking for a problem.

    Comment

    • sandmanmac
      Field Supervisor

      Site Contributor
      2,500+ Posts
      • Feb 2009
      • 3983

      #3
      Re: MPC 4500 print not even

      Originally posted by adween shaari
      my machine when use print colour not even on top. can someone give me a solution.
      And you have done what exactly to try and help yourself and resolve the problem?
      Looks like a fusing issue to me

      Comment

      • adween shaari
        Senior IT Technician
        • May 2012
        • 47

        #4
        Re: MPC 4500 print not even

        Originally posted by sandmanmac
        And you have done what exactly to try and help yourself and resolve the problem?
        Looks like a fusing issue to me
        i change already all fusing parts except stripper. use original pressure roller, fusing belt and new oil web still same.

        Comment

        • sandmanmac
          Field Supervisor

          Site Contributor
          2,500+ Posts
          • Feb 2009
          • 3983

          #5
          Re: MPC 4500 print not even

          Originally posted by adween shaari
          i change already all fusing parts except stripper. use original pressure roller, fusing belt and new oil web still same.
          So what does the image look like on the transfer belt if you stop the copy? what about single colours? black only? how are the dev units? Drum units? laser shields.
          Man, it's like pulling teeth to get any extra info.

          Comment

          • ruben
            The New Guy

            1,000+ Posts
            • Oct 2012
            • 1203

            #6
            Re: MPC 4500 print not even

            If you have replaced the fuser, check the ITB then finally that the TX roller is seated properly. Run multiple sky shots on A3 to see if the uneveness moves. These models suffer from fragile resin on the TX roller lower case and upper holder, both of which have been modified.

            Comment

            • Gweeds
              Junior Member
              • Aug 2013
              • 1

              #7
              Re: MPC 4500 print not even

              Originally posted by ruben
              If you have replaced the fuser, check the ITB then finally that the TX roller is seated properly. Run multiple sky shots on A3 to see if the uneveness moves. These models suffer from fragile resin on the TX roller lower case and upper holder, both of which have been modified.
              I'd second that. It looks like transfer roller issues to me. Check for cracking in the brackets of the main frame where the transfer roller seats. Just by the transfer belt

              Comment

              • karan shetty
                Junior Member
                • Mar 2014
                • 5

                #8
                Re: MPC 4500 print not even

                check charge roller of BLK and Cyan PCU unit.

                if it is dusty clean the charge roller with wet cloth

                Comment

                • teebee1234
                  Service Manager

                  Site Contributor
                  1,000+ Posts
                  • Jul 2008
                  • 1670

                  #9
                  Re: MPC 4500 print not even

                  Originally posted by karan shetty
                  check charge roller of BLK and Cyan PCU unit.

                  if it is dusty clean the charge roller with wet cloth
                  I'm starting to see a pattern with your posts, meaning you just throw anything out there and making me think you don't have a lot of knowledge of how these things work. On another post you suggest to do a full memory clear and or replace the fuser thermostats for a J001 jam code. For this particular problem, a charge roller issue will give you dark marks/lines/bands- not light areas.

                  Comment

                  • teebee1234
                    Service Manager

                    Site Contributor
                    1,000+ Posts
                    • Jul 2008
                    • 1670

                    #10
                    Re: MPC 4500 print not even

                    What is the direction of paper travel on your example. Is the light area the lead, trail or side edge? I can't really discern the paper size. Also, can you please clarify that it does it from print jobs as well as copies or copies only.

                    Comment

                    • Gift
                      Service Manager

                      1,000+ Posts
                      • Mar 2011
                      • 2459

                      #11
                      Re: MPC 4500 print not even

                      Stop the print before the fuser and see if the symptome is still visible to rule out the fuser. I've seen dirty polygon motor mirrors causing pretty related issues on this machine - cleaning is pretty easy to do.

                      Comment

                      • Maxim

                        #12
                        Re: MPC 4500 print not even

                        Looks like either poor fusing or transfer roller is not sitting properly.
                        I would try changing the paper setting from plain to thick1, if the image is ok now then it would be poor fusing.

                        I had something similar when the C-clip and the bearing came off on one side of the hot roller.

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