Misaligned Page in ADU (Duplex) on C8000

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  • adkw
    Junior Member
    • Jan 2021
    • 7

    Misaligned Page in ADU (Duplex) on C8000

    I'm having an issue with pages going that are going through duplex trigger a misaligned error/jam. It looks like the paper shifts slightly to the left as it goes through the ADU on the bottom side causing it to jam. It happens about 4-5 sheets into a job. All rollers and roller bearings inside the ADU were recently replaced. pages printing singe sided are fine it's only happening on duplex pages. Anyone ever experience this?
  • snoopyed
    Junior Member
    • Mar 2016
    • 8

    #2
    Re: Misaligned Page in ADU (Duplex) on C8000

    What is the error code?


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    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22698

      #3
      Re: Misaligned Page in ADU (Duplex) on C8000

      Jam code?

      =^..^=
      If you'd like a serious answer to your request:
      1) demonstrate that you've read the manual
      2) demonstrate that you made some attempt to fix it.
      3) if you're going to ask about jams include the jam code.
      4) if you're going to ask about an error code include the error code.
      5) You are the person onsite. Only you can make observations.

      blackcat: Master Of The Obvious =^..^=

      Comment

      • adkw
        Junior Member
        • Jan 2021
        • 7

        #4
        Re: Misaligned Page in ADU (Duplex) on C8000

        Originally posted by blackcat4866
        Jam code?

        =^..^=

        It's J-9345. I couldn't find it in the service manual. It says Paper was fed with mis-centering. I can see the paper is physically slanted to the left under the ADU

        Comment

        • blackcat4866
          Master Of The Obvious

          Site Contributor
          10,000+ Posts
          • Jul 2007
          • 22698

          #5
          Re: Misaligned Page in ADU (Duplex) on C8000

          Is the first side image properly square, centered? If yes, it happened after the first side was imaged and before the jam location. If no, the skew happened before the page was imaged. =^..^=
          If you'd like a serious answer to your request:
          1) demonstrate that you've read the manual
          2) demonstrate that you made some attempt to fix it.
          3) if you're going to ask about jams include the jam code.
          4) if you're going to ask about an error code include the error code.
          5) You are the person onsite. Only you can make observations.

          blackcat: Master Of The Obvious =^..^=

          Comment

          • tsbservice
            Field tech

            Site Contributor
            5,000+ Posts
            • May 2007
            • 7635

            #6
            Re: Misaligned Page in ADU (Duplex) on C8000

            Any clutches in ADU? You may want look at them if any.
            A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
            Blessed are they who can laugh at themselves, for they shall never cease to be amused.

            Comment

            • adkw
              Junior Member
              • Jan 2021
              • 7

              #7
              Re: Misaligned Page in ADU (Duplex) on C8000

              Originally posted by blackcat4866
              Is the first side image properly square, centered? If yes, it happened after the first side was imaged and before the jam location. If no, the skew happened before the page was imaged. =^..^=
              The first side comes out properly square, but as it flips over it looks like the page shifts. I've tried replacing all the rollers and roller bearings in the ADU as well as the registration roller and the issue hasn't gone away. Had a few Konica techs look at it and they can't seem to figure it out. Could it possibly be a bad clutch? f

              Comment

              • blackcat4866
                Master Of The Obvious

                Site Contributor
                10,000+ Posts
                • Jul 2007
                • 22698

                #8
                Re: Misaligned Page in ADU (Duplex) on C8000

                What about the fuser and inverter/exit assembly? A page skewed in the fuser may not identify a jam until further down the paper path. =^..^=
                If you'd like a serious answer to your request:
                1) demonstrate that you've read the manual
                2) demonstrate that you made some attempt to fix it.
                3) if you're going to ask about jams include the jam code.
                4) if you're going to ask about an error code include the error code.
                5) You are the person onsite. Only you can make observations.

                blackcat: Master Of The Obvious =^..^=

                Comment

                • adkw
                  Junior Member
                  • Jan 2021
                  • 7

                  #9
                  Re: Misaligned Page in ADU (Duplex) on C8000

                  Originally posted by blackcat4866
                  What about the fuser and inverter/exit assembly? A page skewed in the fuser may not identify a jam until further down the paper path. =^..^=
                  Let me swap out the fuser and I'll update you. I have a spare fuser assembly I can try. The belt and shaft on the exit assembly were recently replaced but I will take another look at it.

                  Could the fuser or exit assembly/inverter be an issue since the jam seems to only happen on a duplex. Single sided copies are perfect it only runs into an issue when we're printing double sided jobs.

                  Comment

                  • blackcat4866
                    Master Of The Obvious

                    Site Contributor
                    10,000+ Posts
                    • Jul 2007
                    • 22698

                    #10
                    Re: Misaligned Page in ADU (Duplex) on C8000

                    Possible, yes.
                    If you'd like a serious answer to your request:
                    1) demonstrate that you've read the manual
                    2) demonstrate that you made some attempt to fix it.
                    3) if you're going to ask about jams include the jam code.
                    4) if you're going to ask about an error code include the error code.
                    5) You are the person onsite. Only you can make observations.

                    blackcat: Master Of The Obvious =^..^=

                    Comment

                    • tsbservice
                      Field tech

                      Site Contributor
                      5,000+ Posts
                      • May 2007
                      • 7635

                      #11
                      Re: Misaligned Page in ADU (Duplex) on C8000

                      Found something maybe similar:
                      Konica Minolta C6000 with J-9451 can't duplex
                      A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
                      Blessed are they who can laugh at themselves, for they shall never cease to be amused.

                      Comment

                      • adkw
                        Junior Member
                        • Jan 2021
                        • 7

                        #12
                        Re: Misaligned Page in ADU (Duplex) on C8000

                        Originally posted by tsbservice
                        Any clutches in ADU? You may want look at them if any.
                        The clutches appear to connect to the main body and not to the ADU portion of it. It rollers are above the ADU unit. Clutches seem to be spinning without much resistance and no grinding.

                        Comment

                        • adkw
                          Junior Member
                          • Jan 2021
                          • 7

                          #13
                          Re: Misaligned Page in ADU (Duplex) on C8000

                          Originally posted by blackcat4866
                          What about the fuser and inverter/exit assembly? A page skewed in the fuser may not identify a jam until further down the paper path. =^..^=
                          I tried cleaning the conveyance roller and I was able to print around 10 pages prior to another jam (furthest I've gotten in awhile). The rollers feel a bit smooth and worn out. Going to replace this and the pressure roller on the exit assembly and see if that does the trick.

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