Kyocera 7002i thick solid black line

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  • Necrocannibal
    Trusted Tech

    100+ Posts
    • May 2008
    • 192

    Kyocera 7002i thick solid black line

    This machine has been doing this off and on and will stop doing it for months and then start doing it again. It is very sporadic and usually only does it once or twice a day or usually only a couple of times a week. Kind of looks like high voltage shorting out for a second and we put a new kit in it not too long ago, it did it before and after the kit. I have attached an example of it and paper is traveling in direction of the arrow I put on the sheet, we told the customer it is hard to diagnose if it only does it a few times a week.
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  • Phil B.
    Field Supervisor

    10,000+ Posts
    • Jul 2016
    • 22808

    #2
    Re: Kyocera 7002i thick solid black line

    Originally posted by Necrocannibal
    This machine has been doing this off and on and will stop doing it for months and then start doing it again. It is very sporadic and usually only does it once or twice a day or usually only a couple of times a week. Kind of looks like high voltage shorting out for a second and we put a new kit in it not too long ago, it did it before and after the kit. I have attached an example of it and paper is traveling in direction of the arrow I put on the sheet, we told the customer it is hard to diagnose if it only does it a few times a week.
    so a halfstop test... is the mark on the drum?

    if no do another and let it get to the fuser.. is it there.

    diagnose from that point.

    Before doing this clean the machine completely.. also check transfer roller

    Comment

    • Necrocannibal
      Trusted Tech

      100+ Posts
      • May 2008
      • 192

      #3
      Re: Kyocera 7002i thick solid black line

      Originally posted by Phil B.
      so a halfstop test... is the mark on the drum?

      if no do another and let it get to the fuser.. is it there.

      diagnose from that point.

      Before doing this clean the machine completely.. also check transfer roller
      Problem with that is it only does it once a day, maybe, so we have no idea when it's good to do it. The machine has been completely cleaned when we put a brand new maintenance kit in it and it did it before and after the kit was installed. The machine night make 5 of these a week at random times of the day.

      Sent from my SM-G955U using Tapatalk

      Comment

      • jqueen
        Technician
        • Jul 2015
        • 45

        #4
        Re: Kyocera 7002i thick solid black line

        Does it do it during the copying process or printing process or both? This looks like a copy...and if it is, is it on the glass or through the doc feed???

        Comment

        • Tricky
          Field Supervisor

          Site Contributor
          2,500+ Posts
          • Apr 2009
          • 2621

          #5
          Re: Kyocera 7002i thick solid black line

          Is it the latest firmware?
          TASKalfa_7002i_...2020-02-10)
          Copytechnet search tool v0.8 Final

          Comment

          • toddanderson
            Trusted Tech

            100+ Posts
            • Dec 2005
            • 221

            #6
            Re: Kyocera 7002i thick solid black line

            replace the transfer belt, The kyocera rep that Handels Wisconsin and Illinois gave a webinar on trouble shooting with a sample like that
            and it was the transfer belt.


            Originally posted by Necrocannibal
            This machine has been doing this off and on and will stop doing it for months and then start doing it again. It is very sporadic and usually only does it once or twice a day or usually only a couple of times a week. Kind of looks like high voltage shorting out for a second and we put a new kit in it not too long ago, it did it before and after the kit. I have attached an example of it and paper is traveling in direction of the arrow I put on the sheet, we told the customer it is hard to diagnose if it only does it a few times a week.

            Comment

            • tsbservice
              Field tech

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

              #7
              Re: Kyocera 7002i thick solid black line

              Tough problem at this rate. I would think also high voltage sparked intermittently.

              P.S
              I like also your post count vs rep power and good quality scan sample
              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

              • Santander
                Senior Tech

                Site Contributor
                500+ Posts
                • May 2009
                • 768

                #8
                Re: Kyocera 7002i thick solid black line

                Originally posted by Necrocannibal
                This machine has been doing this off and on and will stop doing it for months and then start doing it again. It is very sporadic and usually only does it once or twice a day or usually only a couple of times a week. Kind of looks like high voltage shorting out for a second and we put a new kit in it not too long ago, it did it before and after the kit. I have attached an example of it and paper is traveling in direction of the arrow I put on the sheet, we told the customer it is hard to diagnose if it only does it a few times a week.
                If you look at the sample you provided, the black stripe has a margin, it does not go to the edge of the page. That tells me this is a scan issue and not a print engine problem. If it was a print engine issue it would extend to the edge of the page, since you have the margin it is caused by a scan issue. Thoroughly clean the optics. It is probably a "dust bunny" that gets in the way of the optics path on occasion. Hope this helps.

                Comment

                • Phil B.
                  Field Supervisor

                  10,000+ Posts
                  • Jul 2016
                  • 22808

                  #9
                  Re: Kyocera 7002i thick solid black line

                  Originally posted by Santander
                  If you look at the sample you provided, the black stripe has a margin, it does not go to the edge of the page. That tells me this is a scan issue and not a print engine problem. If it was a print engine issue it would extend to the edge of the page, since you have the margin it is caused by a scan issue. Thoroughly clean the optics. It is probably a "dust bunny" that gets in the way of the optics path on occasion. Hope this helps.
                  good catch!

                  Comment

                  • Necrocannibal
                    Trusted Tech

                    100+ Posts
                    • May 2008
                    • 192

                    #10
                    Re: Kyocera 7002i thick solid black line

                    Originally posted by Santander
                    If you look at the sample you provided, the black stripe has a margin, it does not go to the edge of the page. That tells me this is a scan issue and not a print engine problem. If it was a print engine issue it would extend to the edge of the page, since you have the margin it is caused by a scan issue. Thoroughly clean the optics. It is probably a "dust bunny" that gets in the way of the optics path on occasion. Hope this helps.
                    What I scanned was a print from a PC not a copy, if it was dirt or dust in the optics the "line" would also follow the paper path not be perpendicular with it. The black "line" will appear at random places on the page but it's always about the same size.

                    Sent from my SM-G955U using Tapatalk

                    Comment

                    • blackcat4866
                      Master Of The Obvious

                      Site Contributor
                      10,000+ Posts
                      • Jul 2007
                      • 22699

                      #11
                      Re: Kyocera 7002i thick solid black line

                      I've seen this resolved by the developing unit. =^..^=
                      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

                      • Brianneoe
                        Trusted Tech

                        250+ Posts
                        • May 2015
                        • 317

                        #12
                        Re: Kyocera 7002i thick solid black line

                        I fixed this problem yesterday. It was kicking my butt for awhile until it became more frequent. Its the ground bearing for the drum shaft. I was able to confirm the problem before I cleaned it and then after. Pull out the shaft and pull off the drum motor. Clean the bearing and the shaft where the bearing sits. If you have a new bearing use it. Once I cleaned the bearing the continuity was firm. At first a though the problem was with ground to neutral high voltage. I was getting from my Sure Tester anywhere between 1.5 to 10 volts. It would start first thing in the morning and then go away after the first 50 copies with about 5 copies having the black bands. Happen every morning and then go away.

                        BTW- I was getting no continuity off the bearing before I cleaned the bearing and shaft. As the bearing moves it makes for a good ground hence the reason why it only happens on start up first thing in the morning. Machine has 3M plus on it.

                        Good luck

                        Comment

                        • Brianneoe
                          Trusted Tech

                          250+ Posts
                          • May 2015
                          • 317

                          #13
                          Re: Kyocera 7002i thick solid black line

                          Sorry to report that the Drum ground did not resolve the issue. Went back to the account and had the same black stripes as shown on your sample. Needless to say I was Bummed out. The Drum ground continuity is good after I cleaned the bearing and shaft but to be on the safe side I replaced it anyway. The Drum and DV units were also replaced but did not help with this issue. Im going to replace the connector for the main charge plus the HV board. Need to remove the Drum shaft again to remove the Main charge connector. At this rate I can do it with my eyes close. Will update you if that works

                          Comment

                          • toddanderson
                            Trusted Tech

                            100+ Posts
                            • Dec 2005
                            • 221

                            #14
                            Re: Kyocera 7002i thick solid black line

                            Replace the transfer belt


                            Originally posted by Brianneoe
                            Sorry to report that the Drum ground did not resolve the issue. Went back to the account and had the same black stripes as shown on your sample. Needless to say I was Bummed out. The Drum ground continuity is good after I cleaned the bearing and shaft but to be on the safe side I replaced it anyway. The Drum and DV units were also replaced but did not help with this issue. Im going to replace the connector for the main charge plus the HV board. Need to remove the Drum shaft again to remove the Main charge connector. At this rate I can do it with my eyes close. Will update you if that works

                            Comment

                            • KYO_OEM
                              Senior Tech

                              500+ Posts
                              • Aug 2011
                              • 636

                              #15
                              Re: Kyocera 7002i thick solid black line

                              i agree with toddanderson.
                              At first change belt and check grounding from it.
                              New belt solved 2 cases, on other case only exchange from complete conveying unit fixed it.

                              Comment

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