C6501 repeating mark every 94.7mm

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  • methogod
    Senior Tech

    Site Contributor
    500+ Posts
    • Dec 2008
    • 921
    #1

    [CQ] C6501 repeating mark every 94.7mm

    C6501 repeating mark every 94.7mm

    book says lower transfer or DV unit.

    swapped drums just to isolate. Take a few hundred to show up... then next run same issue.
    DV unit is not OLD, maybe half way though PM cycle.

    Dropbox - Capture.JPG - Simplify your life
    Tags: 94.7mm, c6501, drums, mark, repeating
    • Phil B.
      Field Supervisor

      10,000+ Posts
      • Jul 2016
      • 22798
      #2
      Re: C6501 repeating mark every 94.7mm

      Originally posted by methogod
      C6501 repeating mark every 94.7mm

      book says lower transfer or DV unit.

      swapped drums just to isolate. Take a few hundred to show up... then next run same issue.
      DV unit is not OLD, maybe half way though PM cycle.

      Dropbox - Capture.JPG - Simplify your life

      doubt the dev unit roller is that large...

      so try the lower transfer

        Comment

        • tsbservice
          Field tech

          Site Contributor
          5,000+ Posts
          • May 2007
          • 8019
          #3
          Re: C6501 repeating mark every 94.7mm

          K primary transfer roller nice and clean?
          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

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 23008
              #4
              Re: C6501 repeating mark every 94.7mm

              Originally posted by Phil B.
              doubt the dev unit roller is that large...

              so try the lower transfer
              The tricky thing about developing units is that the developing roller counter-rotates, and rotates at a different rate than the drum. So essentially the quality interval won't match the size of the developing roller. It's not spinning at the same rate as the drum & transport rollers and in the opposite direction.

              That being said, I'm leaning in the direction of the 2nd transfer roller. I've seen a single scrap of paper smaller than a dime (10mm) trapped under the edge of the roller cause this exact effect. Just removing the paper scrap resolved it.

              =^..^=
              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

                • Phil B.
                  Field Supervisor

                  10,000+ Posts
                  • Jul 2016
                  • 22798
                  #5
                  Re: C6501 repeating mark every 94.7mm

                  Originally posted by blackcat4866
                  The tricky thing about developing units is that the developing roller counter-rotates, and rotates at a different rate than the drum. So essentially the quality interval won't match the size of the developing roller. It's not spinning at the same rate as the drum & transport rollers and in the opposite direction.

                  That being said, I'm leaning in the direction of the 2nd transfer roller. I've seen a single scrap of paper smaller than a dime (10mm) trapped under the edge of the roller cause this exact effect. Just removing the paper scrap resolved it.

                  =^..^=
                  are lower and 2nd the same? ( I took it as so)

                    Comment

                    • blackcat4866
                      Master Of The Obvious

                      Site Contributor
                      10,000+ Posts
                      • Jul 2007
                      • 23008
                      #6
                      Re: C6501 repeating mark every 94.7mm

                      Yes, correct.

                      On these machines the drums/developers stack vertically, with the transfer belt on the left vertically. Second transfer takes place at the bottom of the primary transfer belt with a 2nd transfer roller only. This engine hasn't changed mechanically in a lot of years.
                      =^..^=
                      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

                        • Phil B.
                          Field Supervisor

                          10,000+ Posts
                          • Jul 2016
                          • 22798
                          #7
                          Re: C6501 repeating mark every 94.7mm

                          Originally posted by blackcat4866
                          Yes, correct.

                          On these machines the drums/developers stack vertically, with the transfer belt on the left vertically. Second transfer takes place at the bottom of the primary transfer belt with a 2nd transfer roller only. This engine hasn't changed mechanically in a lot of years.
                          =^..^=
                          just rusty on the current terminology Brother...

                          thanks for clarifying that for me!

                            Comment

                            • methogod
                              Senior Tech

                              Site Contributor
                              500+ Posts
                              • Dec 2008
                              • 921
                              #8
                              Re: C6501 repeating mark every 94.7mm

                              2nd transfer roller - in the belt unit, or in the ADU.

                              Manual calls both rollers the same thing.

                              Pulled the belt, cleaned the drums, swapped to just to be sure it wasn't the black drum.
                              Ran the rest of the day without issue. Will test in the AM see if it returns.

                              They are watching for it....

                                Comment

                                • blackcat4866
                                  Master Of The Obvious

                                  Site Contributor
                                  10,000+ Posts
                                  • Jul 2007
                                  • 23008
                                  #9
                                  Re: C6501 repeating mark every 94.7mm

                                  Originally posted by methogod
                                  2nd transfer roller - in the belt unit, or in the ADU.

                                  Manual calls both rollers the same thing.

                                  Pulled the belt, cleaned the drums, swapped to just to be sure it wasn't the black drum.
                                  Ran the rest of the day without issue. Will test in the AM see if it returns.

                                  They are watching for it....
                                  ... in the ADU.
                                  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

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