MP C4503 SC569

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  • wyo19
    Technician
    • Nov 2012
    • 51

    MP C4503 SC569

    I've got a C4503 that's had SC569 I replaced the fuser drive motor (AX060441) worked for about 6 months, came back this week so I replaced the fuser assembly and paper exit assembly (D1484401) yesterday problem came today is that the exit/depressurization assembly? if not anyone have a part number or an idea on how to fix this problem?
  • Oilblob

    #2
    Re: MP C4503 SC569

    Originally posted by wyo19
    I've got a C4503 that's had SC569 I replaced the fuser drive motor (AX060441) worked for about 6 months, came back this week so I replaced the fuser assembly and paper exit assembly (D1484401) yesterday problem came today is that the exit/depressurization assembly? if not anyone have a part number or an idea on how to fix this problem?
    had the same issue and I had to change that motor assembly
    there is a shaft that gets stiff and there are several one way bearings in there as well turns one way to drive exit turns the other way to depressurize part # D1751357 Have fun with this

    Comment

    • M0scb
      Technician
      • Oct 2012
      • 32

      #3
      Re: MP C4503 SC569

      Originally posted by Oilblob
      had the same issue and I had to change that motor assembly
      there is a shaft that gets stiff and there are several one way bearings in there as well turns one way to drive exit turns the other way to depressurize part # D1751357 Have fun with this
      I have also heard there is a torq limiter that can cause the drive to become slow or bind. D149 1379. Might be a useful one to know. Easy to replace, just remove a couple of fans to gain access.

      Comment

      • Nasim
        Junior Member
        • Aug 2017
        • 8

        #4
        Re: MP C4503 SC569

        Replace Exit/Pressure Release Motor

        Comment

        • Dark Helmet
          Senior Tech

          Site Contributor
          VIP Subscriber
          500+ Posts
          • May 2009
          • 771

          #5
          Re: MP C4503 SC569

          Originally posted by Oilblob
          had the same issue and I had to change that motor assembly
          there is a shaft that gets stiff and there are several one way bearings in there as well turns one way to drive exit turns the other way to depressurize part # D1751357 Have fun with this
          Replacing this assembly fixed my SC569 on a MPC3503. Not a horrible job but you want some space. Remove all back covers, take picture of connectors on BICU (lots to re route) and remove all connectors so you can remove the entire controller box. Remove fans by side door and unhook all the wire harness and the drive will slip out. The one way bearing was slipping on the shaft shown in the attached picture. I was able to turn that gear and occasionally make it slip. That one way free wheels alot as the exit motor drives the exit rollers in one direction and the pressure release in the other. It probably could of been cleaned but this machine was out of town so not taking any chances and i was not sure what i was getting into.
          IMG_20190516_120048.jpg
          Evil will always triumph because good is dumb.

          Comment

          • JDYAL
            Trusted Tech

            Site Contributor
            100+ Posts
            • Sep 2008
            • 186

            #6
            Re: MP C4503 SC569

            X2 what Lawrence said. Had a 3003 with 1.2 mil and got sc569, replaced the whole unit. Easy peasy.

            Comment

            • SDtech619
              Technician

              Site Contributor
              • Dec 2013
              • 40

              #7
              Re: MP C4503 SC569

              Originally posted by Lawrence
              Replacing this assembly fixed my SC569 on a MPC3503. Not a horrible job but you want some space. Remove all back covers, take picture of connectors on BICU (lots to re route) and remove all connectors so you can remove the entire controller box. Remove fans by side door and unhook all the wire harness and the drive will slip out. The one way bearing was slipping on the shaft shown in the attached picture. I was able to turn that gear and occasionally make it slip. That one way free wheels alot as the exit motor drives the exit rollers in one direction and the pressure release in the other. It probably could of been cleaned but this machine was out of town so not taking any chances and i was not sure what i was getting into.
              [ATTACH=CONFIG]42725[/ATTACH]
              In a pinch you can remove the gear and scar the shaft so the bearing has something to grab on too...i used a box cutter blade. BE CAREFUL NOT TO CUT YOURSELF AND OF COURSE THIS IS A TEMPORARY FIX.

              Comment

              • skinnyb
                Trusted Tech

                250+ Posts
                • Jul 2008
                • 291

                #8
                Re: MP C4503 SC569

                Originally posted by JDYAL
                X2 what Lawrence said. Had a 3003 with 1.2 mil and got sc569, replaced the whole unit. Easy peasy.
                X3 I have had to do it twice on a couple of high mileage units. It is a beast to get to but doable. Lots of covers, a couple of fans and swing the board assembly out to get out of the way. Make sure you watch the ribbon cables and pay close attention to every connection as you take apart.

                Sent from my LM-V405 using Tapatalk

                Comment

                • Zaxxon
                  Senior Tech

                  500+ Posts
                  • Jan 2014
                  • 608

                  #9
                  Re: MP C4503 SC569

                  Originally posted by skinnyb
                  X3 I have had to do it twice on a couple of high mileage units. It is a beast to get to but doable. Lots of covers, a couple of fans and swing the board assembly out to get out of the way. Make sure you watch the ribbon cables and pay close attention to every connection as you take apart.

                  Sent from my LM-V405 using Tapatalk
                  I agree, crazy task, I went to the car for crying and back
                  Please start you post with brand, model, problem.

                  Comment

                  • copier tech
                    Field Supervisor

                    5,000+ Posts
                    • Jan 2014
                    • 7931

                    #10
                    Re: MP C4503 SC569

                    Originally posted by M0scb
                    I have also heard there is a torq limiter that can cause the drive to become slow or bind. D149 1379. Might be a useful one to know. Easy to replace, just remove a couple of fans to gain access.

                    I agree with this, for a quick & simple fix spray some WD40 on this one way clutch, you can open the right hand door to access this on the rear of the machine to the right of the fuser.

                    If this resolves the issue replace it.
                    Let us eat, drink, and be merry, because tomorrow we may die!

                    For all your firmware & service manual needs please visit us at:

                    www.copierfirmware.co.uk - www.printerfirmware.co.uk

                    Comment

                    • ricohfreak
                      Junior Member
                      • Mar 2015
                      • 2

                      #11
                      Re: MP C4503 SC569

                      Here is the video od bad working of 1way cltuch:
                      YouTube

                      Comment

                      • ricohfreak
                        Junior Member
                        • Mar 2015
                        • 2

                        #12
                        Re: MP C4503 SC569

                        Just figured that Paper feed roller from SP 5210 has the same 1 way clutch as we have in the gear in fusing drive ass'y.
                        Photo: https://drive.google.com/open?id=15e...9tKxFrZySl8ZkE

                        Comment

                        • copier tech
                          Field Supervisor

                          5,000+ Posts
                          • Jan 2014
                          • 7931

                          #13
                          Re: MP C4503 SC569

                          Originally posted by ricohfreak
                          Just figured that Paper feed roller from SP 5210 has the same 1 way clutch as we have in the gear in fusing drive ass'y.
                          Photo: https://drive.google.com/open?id=15e...9tKxFrZySl8ZkE
                          Nice video & cheers for the info re the 5210 roller!

                          Let us eat, drink, and be merry, because tomorrow we may die!

                          For all your firmware & service manual needs please visit us at:

                          www.copierfirmware.co.uk - www.printerfirmware.co.uk

                          Comment

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