MX-C311 issue

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  • PASTech
    Trusted Tech

    100+ Posts
    • Sep 2010
    • 192
    #1

    MX-C311 issue

    Hi Guys,

    I have an MX-C311 about 2 hours away where on the front frame side of the copies are faded. This fade is duplicated when I run data prints from Sim 22, however when I run internal prints from Sim 64 they are crisp and just the way they need to be. I was able to stop the Sim 22 print in mid print to check the drum and the image is full and complete on the drum (no fading on drum).

    Do Sim 22/Copies us a different process than Sim 64 or different boards?

    I orignally tried swapping out the drum/dev with no fix...it seems to be within the transfer section or the cricuit board section.

    The fade looks like white northern lights where the edge moves in and out of the page.

    Also sky shots with black produce this image, however color sky shots don't most of the time...I did get the magenta once to produce a weird fade but it was different, looked like a picket fence along the front frame side edge.

    I cleaned the transfer connection in the back, and reseated some of the connectors to the circuit board.

    Anyone seen this before?

    Thanks in advance...
    What's Brown and Sticky?

    -A Stick
    Tags: black, color, color drums, copies, drum, forgot, ignore, image, issue, side, sim, time, transfer, understanding
    • PASTech
      Trusted Tech

      100+ Posts
      • Sep 2010
      • 192
      #2
      Re: MX-C311 issue

      One of my fellow techs informed me that the "picket fence" pattern I have ont he magenta is the florecent lights...so please ignore that comment.

      Also this machine is newly installed, only has 5k copies on it....shouldn't be having any problems at this point in my opinion!!!!
      What's Brown and Sticky?

      -A Stick

        Comment

        • DAKOTADAN
          Technician

          50+ Posts
          • Jan 2011
          • 61
          #3
          Re: MX-C311 issue

          I have seen the fuser cause uneven density, so if you have a spare fuser pop that in and see if the problem is gone. Also look at MFP-TB-484, this deals with uneven density issues. This item in the bulletin may be on your machine already, but if it is a older machine, then this might not be on your machine.
          Hope this helps.

            Comment

            • PASTech
              Trusted Tech

              100+ Posts
              • Sep 2010
              • 192
              #4
              Re: MX-C311 issue

              The machine was brand new 1 month ago from sharp direct so the part int he bulletin I believe is on there. The fading is also on the paper prior to the fuser. It has to be related to the transfer as the drums have the perfect image on them when stopped in mid print and yet the transfer does not receive it. Highly doubt that it is the mechanical portions of the transfer as everything works perfectly with the internal prints from SIM 64 solid black and all others in there.

              However unless I get a clue, I am going to replace the transfer next and see what happens...

              dumb thing is, is that I used out last transfer for these units the week before and found out that I received the replacements on the day I was out at this call (2 hours away)...and the day before this call came in we sold/installed our last demo of this machine so no machine I can drag along and just start swapping out stuff....

              oh well,

              THANKS FOR THE SUGGESTIONS
              I will a look at these things when I get there next.
              What's Brown and Sticky?

              -A Stick

                Comment

                • mojorolla
                  The Wolf

                  2,500+ Posts
                  • Jan 2010
                  • 2583
                  #5
                  Re: MX-C311 issue

                  There are two little white platic pieces on the frame that attach to the cam shaft. If one of them breaks, or the spring comes off, it can cause issues similar to what you are describing. I have had a few of these break. They are 14 and 26 in the picture. You could also have a fuser bearing problem or those lil crap clips that hold the bearing in could have come loose.


                  07-26-2011.pdf
                  Failing to plan is planning to fail!!!

                    Comment

                    • PASTech
                      Trusted Tech

                      100+ Posts
                      • Sep 2010
                      • 192
                      #6
                      Re: MX-C311 issue

                      Thanks guys for the responses, I have trouble understanding how the machine could work perfectly with internal prints (Sim 64) every time and the internal data prints (Sin 22) would be faded. I am going to replace the transfer belt shortly and hopefully this fixes it....

                      If anyone understands if there is a difference in the processing of these two internal prints I would love hear what they are so that if it isn't the transfer I can start checking the boards/RAM/whatever else it may be.

                      Thanks Guys,

                      ...
                      What's Brown and Sticky?

                      -A Stick

                        Comment

                        • sharptech
                          Technician
                          • May 2011
                          • 40
                          #7
                          Re: MX-C311 issue

                          I think sharp has a bulletin out for this problem. If I remember correctly there is a shim that needs to be added on the right side door.

                          T.G.G.

                            Comment

                            • PASTech
                              Trusted Tech

                              100+ Posts
                              • Sep 2010
                              • 192
                              #8
                              Re: MX-C311 issue

                              Well I forgot to reply with a close for this issue. Ended up being, as advised, a problem with the transfer belt. Replaced it and everything was hunkey dorey after that...thanks for all the help
                              What's Brown and Sticky?

                              -A Stick

                                Comment

                                • btbear
                                  #9
                                  Re: MX-C311 issue

                                  Glad you fixed it. The difference between printing Sim 22-6 and prints in Sim 64 is the position of the primary transfer belt. when printing 22-6 the belt is in B&W position and away from the color drums. In sim 64 it is in the color position and near all the drums.

                                    Comment

                                    • PASTech
                                      Trusted Tech

                                      100+ Posts
                                      • Sep 2010
                                      • 192
                                      #10
                                      Re: MX-C311 issue

                                      Thanks, That is what i needed to know. I appreciate the information!!!
                                      What's Brown and Sticky?

                                      -A Stick

                                        Comment

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