Bizhub C360/DF-617 Duplexing Issue

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  • stevena86
    Trusted Tech

    100+ Posts
    • Oct 2012
    • 130
    #1

    Bizhub C360/DF-617 Duplexing Issue

    Called to a customers location today for an issue they had with duplexed copies. Their originals are 2-sided, and they are doing a 2-sided to 2-sided copy job. Original is about 50 pages in length. After the adf pulls around 10-15 pages, it starts to print a vertical line on the leading edge. Eventually the line gets thicker and darker, and then eventually the entire copy has a grey background to it. The background does not go to the edges of the paper, though. I plugged my laptop in to the copier and printed off a 50 page 2-sided document, and the problem never appeared. It is exclusive to the ADF.

    At this point, I am stumped as to whether it is a mechanical issue that is throwing off the timing or an electrical. It also only occurs on duplex. If I run any amount of simplex originals through the ADF, the issue never occurs. Any ideas on what mechanical parts I should look at that would cause such an issue? I am going back with a spare ADF board in the morning to see if I can either rule out electrical, or solve it with the spare board.

    Samples are below.

    SKMBT_C36014061113030.pdf
    Tags: None
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22960
      #2
      Re: Bizhub C360/DF-617 Duplexing Issue

      I think I'd:
      1) Clean and check the white plate
      2) Clean all optics, including CCD lens (don't touch the painted screws!)
      2) Do the shading adjustments in the manual.

      =^..^=
      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

        • stevena86
          Trusted Tech

          100+ Posts
          • Oct 2012
          • 130
          #3
          Re: Bizhub C360/DF-617 Duplexing Issue

          Took a spare DF-617 with me this morning to the customers location and completely swapped the two. Problem still persisted even with a different ADF. Problem is somewhere in the machine. Called Konica, and they had nothing. Only thing they had with similar symptoms, they never found an answer to. I'm having the machine brought in to the shop to look at. Few things I've gathered from other techs to look at are the ribbon cables going from the CCD to the board in the back. Do a trouble reset to clear the image processor board. Check the power supply to make sure it isn't causing any sort of weird voltage issue.

          I also tried all of the things blackcat recommended and none resolved the issue.

          I've also added a few more samples to this thread in case anything there makes a light bulb in your heads go off.

          Firstcopy.pdf
          Fifthcopy.pdf
          Finalcopy.pdf

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22960
              #4
              Re: Bizhub C360/DF-617 Duplexing Issue

              I wonder if one of the voltages is sagging. That would account for both dimming exposure lamp and slowing DF motor speed.

              I'd start by checking the schematics to identify the associated source voltages, track them back to the PS, then monitor those voltages while duplexing. =^..^=
              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

                • kingarthur
                  Service Manager

                  1,000+ Posts
                  • Feb 2008
                  • 1305
                  #5
                  Re: Bizhub C360/DF-617 Duplexing Issue

                  This was recently posted on the infohub, by KM for exactly the fault you are describing

                  Advice and Solution
                  Please replace the scanner drive belt and motor.


                  Item 18 - A02E M10A 00 Stepping motor
                  Item 20 - A0ED 2756 00 Belt 210L
                  Note: Install Motor and Belt as per manual

                  TAGB1400972EN
                  Tip for the day; Treat every problem as your dog would.....If you cant eat it or f*ck it....then p*ss on it & walk away...

                    Comment

                    • stevena86
                      Trusted Tech

                      100+ Posts
                      • Oct 2012
                      • 130
                      #6
                      Re: Bizhub C360/DF-617 Duplexing Issue

                      Really? Why in the hell would the guy at Konica not point me towards that? Haha. I will check it out and post the results.

                      Do you also have a link to that post by chance?

                        Comment

                        • kingarthur
                          Service Manager

                          1,000+ Posts
                          • Feb 2008
                          • 1305
                          #7
                          Re: Bizhub C360/DF-617 Duplexing Issue

                          unfortunately I can't post a link, as it is only visible if you're logged into their technical website, it was posted by them on 15th may, found it yesterday when looking for something else, will try to copy & paste & send it to you via pm
                          Tip for the day; Treat every problem as your dog would.....If you cant eat it or f*ck it....then p*ss on it & walk away...

                            Comment

                            • stevena86
                              Trusted Tech

                              100+ Posts
                              • Oct 2012
                              • 130
                              #8
                              Re: Bizhub C360/DF-617 Duplexing Issue

                              After being busy as hell the past two weeks, I was able to get some time to finally go look at this thing today and here's what I found.

                              Taking the information from kingarthur, I looked at the scanner motor/scanner belt assembly in the back of the scanner. I found that when you would duplex copy, the scanner motor would move the optical unit every scan. What would happen during the movement was, it would move the scanner, reset it and then do about a 1mm tick. After about 25 scans, the ticks added up to it moving the optics far enough away that it would start scanning the frame of the scanner, instead of the originals. I replaced the scanner motor and scanner belt, but that did not resolve the issue. What I found after further inspecting the scanner, was that the white pulley (p/n A0ED 2755 01) that the belt attaches to to move the optics in the scanner would wobble when rotating. The wobble is what was causing the ticks.

                              To resolve this whole thing, I just swapped out the entire scanner deck assembly with a spare one and called it a day. Hope this helps someone else in the future.

                                Comment

                                • blackcat4866
                                  Master Of The Obvious

                                  Site Contributor
                                  10,000+ Posts
                                  • Jul 2007
                                  • 22960
                                  #9
                                  Re: Bizhub C360/DF-617 Duplexing Issue

                                  Which pulley? Thanks for sharing Steven. =^..^=
                                  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

                                    • stevena86
                                      Trusted Tech

                                      100+ Posts
                                      • Oct 2012
                                      • 130
                                      #10
                                      Re: Bizhub C360/DF-617 Duplexing Issue

                                      thisone.jpg

                                      That pulley. I suspect the entire shaft was bent or something. I know what a pain it is to re-string these, so I didn't even bother haha

                                        Comment

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