BIZHUB 363 Polygon Motor Rotation Error

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  • wkwar
    Technician

    50+ Posts
    • Jan 2019
    • 52

    BIZHUB 363 Polygon Motor Rotation Error

    Hello

    Trying to see if i can lube or replace the print head. Open the side like the manual states but can't seem to take it apart. What am i missing?
    Attached Files
  • copyman
    Owner / Technician

    Site Contributor
    2,500+ Posts
    • Sep 2005
    • 4133

    #2
    Re: BIZHUB 363 Polygon Motor Rotation Error

    Originally posted by wkwar
    Hello

    Trying to see if i can lube or replace the print head. Open the side like the manual states but can't seem to take it apart. What am i missing?
    Print head is behind that big metal plate on side. Plus some connectors have to be unplugged from board in back of machine.

    Step by step instructions are in manual starting on page G-17.

    FYI I haven't had much luck lubricating polygon motors. It won't hurt to try.

    Comment

    • KMFLT3CH
      Trusted Tech

      100+ Posts
      • May 2017
      • 177

      #3
      Re: BIZHUB 363 Polygon Motor Rotation Error

      You need to get the inner finisher off and out of the way, then the horizontal metal cover plate under the finisher (not shown in your picture). The PH is under all that, held in by 3 spring loaded screws and 2 ribbon cables.

      Comment

      • Markks
        Trusted Tech

        Site Contributor
        VIP Subscriber
        250+ Posts
        • Feb 2018
        • 495

        #4
        Re: BIZHUB 363 Polygon Motor Rotation Error

        [QUOTE=wkwar;2588342]Hello

        Trying to see if i can lube or replace the print head. Open the side like the manual states but can't seem to take it apart. What am i missing?[/QUOTE

        If you have a service manual there are instructions on how to replace the print head. The print head is a sealed unit not designed to be taken apart. I was taught a long time ago the the polygon mirror rides on "air" bearings no way to lube. if you have an old machine around you could take the print head out of it.

        Comment

        • copyman
          Owner / Technician

          Site Contributor
          2,500+ Posts
          • Sep 2005
          • 4133

          #5
          Re: BIZHUB 363 Polygon Motor Rotation Error

          KMFLT3CH is correct I was thinking of DC power supply behind side plate.

          Comment

          • Markks
            Trusted Tech

            Site Contributor
            VIP Subscriber
            250+ Posts
            • Feb 2018
            • 495

            #6
            Re: BIZHUB 363 Polygon Motor Rotation Error

            Instructions attached
            Attached Files

            Comment

            • femaster
              Service Manager

              1,000+ Posts
              • May 2011
              • 1378

              #7
              Re: BIZHUB 363 Polygon Motor Rotation Error

              Just a note here if you decide to scavenge a print head from another machine:

              There are 2 different print heads depending on the model of the machine, so make sure you scavenge from the correct model.

              A1UFR70300 - 223, 283
              A1UDR71311 - 363, 423
              A Ricoh Service Tech for 7 year. A Konica Minolta Service Tech for 7 years. Now, KM service manager for 4 years.
              My Ricoh knowledge is slowly dwindling away at this point. Many things have been lost to time...

              Comment

              • wkwar
                Technician

                50+ Posts
                • Jan 2019
                • 52

                #8
                Re: BIZHUB 363 Polygon Motor Rotation Error

                "You need to get the inner finisher off and out of the way"

                how in the world do i take off the finisher. it slides out to a certain extend the gets stuck.
                Attached Files

                Comment

                • copyman
                  Owner / Technician

                  Site Contributor
                  2,500+ Posts
                  • Sep 2005
                  • 4133

                  #9
                  Re: BIZHUB 363 Polygon Motor Rotation Error

                  Originally posted by wkwar
                  "You need to get the inner finisher off and out of the way"

                  how in the world do i take off the finisher. it slides out to a certain extend the gets stuck.
                  Are you a technician or end user? It is very easy to remove and a tech would know this. Anyway I have attached FS-529 installation instructions, just reverse steps to remove.

                  You have been provided a lot of good "free" advice, why not make a small contribution to this website to help keep it running?
                  Attached Files

                  Comment

                  • wkwar
                    Technician

                    50+ Posts
                    • Jan 2019
                    • 52

                    #10
                    Re: BIZHUB 363 Polygon Motor Rotation Error

                    end user. that document is the missing piece.... thanks for your help

                    yes we will make a contribution

                    Comment

                    • Hansoon
                      Field Supervisor

                      Site Contributor
                      2,500+ Posts
                      • Sep 2007
                      • 3273

                      #11
                      Attached Files
                      " Sent from my Intel 80286 using MS-DOS 2.0 "

                      Comment

                      • wkwar
                        Technician

                        50+ Posts
                        • Jan 2019
                        • 52

                        #12
                        Re: BIZHUB 363 Polygon Motor Rotation Error

                        hello hans, thank you very much for your help. we have 2 of these. machine has only 40K copies so i think it is worst saving. yes they have been very good machines....

                        Comment

                        • Hansoon
                          Field Supervisor

                          Site Contributor
                          2,500+ Posts
                          • Sep 2007
                          • 3273

                          #13
                          Re: BIZHUB 363 Polygon Motor Rotation Error

                          It's the age of the machine, not the counter. Had one last October with only 10k on the clock with this same error. Had to do my procedure once again after a day of use to get it up finally, but at least it is working until now, and I am sure it will do in the future.

                          Easy to see if the polygon mirror is turning light and freely. Good luck with it.

                          Hans
                          " Sent from my Intel 80286 using MS-DOS 2.0 "

                          Comment

                          • Tech09
                            Trusted Tech

                            Site Contributor
                            100+ Posts
                            • Apr 2020
                            • 112

                            #14
                            Re: BIZHUB 363 Polygon Motor Rotation Error

                            Never, ever under any circumstances lubricate the laser mirror, they do float on an air bearing.

                            Comment

                            • Hansoon
                              Field Supervisor

                              Site Contributor
                              2,500+ Posts
                              • Sep 2007
                              • 3273

                              #15
                              Re: BIZHUB 363 Polygon Motor Rotation Error

                              Originally posted by Tech09
                              Never, ever under any circumstances lubricate the laser mirror, they do float on an air bearing.
                              Air bearings are not being used in the print head of this series bizhubs. They have plain sintered metal bushings.

                              It is a good practice to NOT lubricate bushings of the sintered metal type. Sintered metal bushing have their own lubricant integrated in the pores of the metal during the production process. Adding any other lubricant later on will clog those pores. However, when for some reason the self lubricating effect of the sinter bushing has gone, lubricating can be the only solution to avoid cost intensive replacement. Especially when the bushing is incorporated in a costly part such as the polygon mirror unit.

                              The other side of the medal is, that sometimes after a longer period the procedure has to be repeated, but until now this happened only twice from at least 10 machines I did. Another advantage of re-lubricating of the print head besides the economical advantages is, that it is much less time-consuming than taking out the print head unit itself with all those flat cables running through half of the machine.

                              The only way to extend the life of the — otherwise useless — part is to remove as much as possible the dried out original lubricant with a solvent and then applying fresh lubricant such as very thin oil. Doing this since the early days of the digital MFP's beginning with the Minolta Di series and later on with the 250/350 and 363/423 machines with success.

                              In case of obsolete parts such as the spare parts for older tape recorders, the capstan bushing alone can be revived by removing the old lubricant under vacuum followed by injecting fresh lubricant. My brother used to do this. He used a very large syringe with inside the bushing, blocking the front opening of the syringe and pulling all air out of it. Leaving it overnight, it was astonishingly to see what crud creeped out of the metal. After that, thorough cleaning with acetone and doing the same procedure in reverse but with oil added inside the syringe, pulling a vacuum for some time and sudden leaving in the outside air. The pores of the metal will suck up part of the oil. I've heard from others even using the vacuum of wake-up glasses for this purpose.

                              Hans
                              Last edited by Hansoon; 03-31-2024, 10:07 AM.
                              " Sent from my Intel 80286 using MS-DOS 2.0 "

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