Vertical black lines..

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  • mickeyc123
    Technician
    • Apr 2013
    • 18
    #1

    [Electrical] Vertical black lines..

    Hello all,
    i have a UTAX 5555i (its the same as a Kyocera 5501i) giving vertical black lines randomly when printing.
    it has just over 1.8M on it and has recently had a new maintenance kit installed.
    Pic below,
    IMG_20191110_093423.jpg

    Ive cleaned the contacts and tried a new charge and drum. the machine could print 200 pages without issue but then put lines on the next 10 pages then disappear again.
    i suspect the high voltage power supply is causing the issue but wanted to ask in here to see if anyone one else has had a similar issue?

    thanks,
    mick
    Tags: black, issue, lines, pages, vertical
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22698
      #2
      Re: Vertical black lines..

      It looks like primary charge loss to me. See how the anomalous lines cross the edge voids? Not the laser. Is the interval 37.5mm? =^..^=
      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

        • Ropariva
          Senior Tech

          500+ Posts
          • Mar 2016
          • 588
          #3
          Re: Vertical black lines..

          Check the drum earth. Plastic tab removed before fitting?

            Comment

            • mickeyc123
              Technician
              • Apr 2013
              • 18
              #4
              Re: Vertical black lines..

              Originally posted by blackcat4866
              It looks like primary charge loss to me. See how the anomalous lines cross the edge voids? Not the laser. Is the interval 37.5mm? =^..^=
              Depending on where I measure from the lines are between 40 and 45mm apart.

                Comment

                • mickeyc123
                  Technician
                  • Apr 2013
                  • 18
                  #5
                  Re: Vertical black lines..

                  Originally posted by Ropariva
                  Check the drum earth. Plastic tab removed before fitting?
                  Yes, tab removed from back of the drum.
                  Issue is random, could do 200 prints without a problem then put out 10 to 15 pages with lines.

                    Comment

                    • kyogenius
                      Trusted Tech
                      • Jul 2012
                      • 136
                      #6
                      Re: Vertical black lines..

                      have had this very same problem on a 5500i .
                      try this and see if it will solve your problem
                      get into sim 100....turn AC auto adj OFF... chnge the AC BIAS to any value between 107-117 and check if it helps.One of our machines has been working fine after doing that.
                      failure is not an option !

                        Comment

                        • copiertec
                          Service Manager

                          Site Contributor
                          1,000+ Posts
                          • Jan 2016
                          • 2172
                          #7
                          Re: Vertical black lines..

                          We have used dialectric grease on some drum shafts to correct drum shorting issues on the old Alfard series.

                            Comment

                            • JPazy
                              Technician
                              • Jul 2019
                              • 30
                              #8
                              Re: Vertical black lines..

                              I had one many moons ago having a similar problem. Would have sworn it was drum grounding or MC problem. Ended up being a problem with the DV unit. Replaced the developer unit and problem was solved.

                                Comment

                                • KYO_OEM
                                  Senior Tech

                                  500+ Posts
                                  • Aug 2011
                                  • 636
                                  #9
                                  Re: Vertical black lines..

                                  Hi,
                                  why you don`t follow UTAX bulletin TB-57S to solve it?
                                  You also can use KYO bulletin 2N9-00009 (F180)
                                  Attached Files

                                    Comment

                                    • JR2ALTA
                                      Service Manager

                                      Site Contributor
                                      1,000+ Posts
                                      • Feb 2010
                                      • 2017
                                      #10
                                      Re: Vertical black lines..

                                      Originally posted by KYO_OEM
                                      Hi,
                                      why you don`t follow UTAX bulletin TB-57S to solve it?
                                      You also can use KYO bulletin 2N9-00009 (F180)
                                      Spot on. Great contribution.

                                        Comment

                                        • mickeyc123
                                          Technician
                                          • Apr 2013
                                          • 18
                                          #11
                                          Re: Vertical black lines..

                                          Originally posted by KYO_OEM
                                          Hi,
                                          why you don`t follow UTAX bulletin TB-57S to solve it?
                                          You also can use KYO bulletin 2N9-00009 (F180)

                                          Wow, thanks very much for this kyo_oem!
                                          I did not see that bulletin and it describes exactly the issue I'm having.
                                          I'll give it a shot when I'm back in with the customer tomorrow.

                                          Thanks again!

                                            Comment

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