FS-C2126MFP dots and circle

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  • kyove
    Technician

    50+ Posts
    • Apr 2015
    • 62
    #1

    FS-C2126MFP dots and circle

    Hi guys,

    I have a problem with FS-C2126MFP. Print has an orizontal line of dots.
    I checked drums and charger and seems to be ok, no signs no scratch.

    Here is the problem doc20160311183900.pdf

    What do you think?
    What can I do?

    Firmware is already on the latest version.
    Kyove
    Tags: None
    • wragsdale
      Trusted Tech

      100+ Posts
      • Jul 2014
      • 188
      #2
      Re: FS-C2126MFP dots and circle

      Looks like toner sticking to the drums given the even interval vertically and the same pattern is repeating dot for dot.

        Comment

        • blackcat4866
          Master Of The Obvious

          Site Contributor
          10,000+ Posts
          • Jul 2007
          • 22930
          #3
          Re: FS-C2126MFP dots and circle

          Ok. I've changed my mind. The pattern repeats exactly. Like label adhesive on the magenta and black drums, and maybe on the primary transfer belt. =^..^=
          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

            • wragsdale
              Trusted Tech

              100+ Posts
              • Jul 2014
              • 188
              #4
              Re: FS-C2126MFP dots and circle

              Originally posted by blackcat4866
              Ok. I've changed my mind. The pattern repeats exactly. Like label adhesive on the magenta and black drums, and maybe on the primary transfer belt. =^..^=
              Look carefully! There's cyan overlapping some of the magenta and then yellow offset on its own line. All of the drums for sure and I agree about the belt.

                Comment

                • kyove
                  Technician

                  50+ Posts
                  • Apr 2015
                  • 62
                  #5
                  Re: FS-C2126MFP dots and circle

                  Hi guys,

                  I check the cleaning section in transfer belt. Was not bad but I clean everything and now is perfect.
                  The point are drums. Machine has about 80k copies so drums are in well condition.
                  As you diagnose there are some dirty on surface. Dirty are dots and we all see the result on print.
                  To clean I use isopropyl alcohol and dirty is gone.

                  Very happy of mine I assemble everithing and at the first print the surprise: problem was not fixed so I have dots and circle.
                  For the second time I cleaned drums but nothing changed... I clean drums and after a print they get dirty.

                  Developer unit seems ok. I try to spin the gears and roller appears in good condition with toner on all surface.

                  What can I do? First time I disassembly MFP it makes only few dots on black.
                  Now there are many dots in all color...

                  Do I damage drums cleaning it with isopropyl alcohol? Drum's surface are smooth with no scratch or similar.
                  Dirty circle makes no difficult to go away.

                  I saw a Bulletin concernig this problem but talks about dots and circle on the entire page.
                  Kyocera suggest to upgrade firmware but I'm already on the latest version.

                  Please help me,
                  Kyove

                    Comment

                    • blackcat4866
                      Master Of The Obvious

                      Site Contributor
                      10,000+ Posts
                      • Jul 2007
                      • 22930
                      #6
                      Re: FS-C2126MFP dots and circle

                      It's likely that one or more of the primary charge rollers have been arcing through to one or more of the drums. The arc spots will continue to make dots, and will not be visible to you on the surface. My suggestion is to bring four drum units and replace them as needed. The new firmware may reduce the incidence of the primary charge arcing on the next set of drums. =^..^=
                      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

                        • subaro
                          Service Manager

                          1,000+ Posts
                          • Oct 2010
                          • 1273
                          #7
                          Re: FS-C2126MFP dots and circle

                          from the control panel menu, under printer, set the machine to print in monochrome. Then print the test page from the service menu. It should only print monochrome. If the problem is still there, then swap each drum with the black drum. this way, you would see which drum is at issue, or if it is the drum.
                          Did you examine the surface of the transfer belt closely. If you have a good drum put it in the black and print in monochrome and see what happens.
                          Last edited by subaro; 03-22-2016, 12:37 AM.
                          THE ONLY THING FOR EVIL TO TRIUMPH IS FOR GOOD MEN TO DO NOTHING..........edmund burke

                            Comment

                            • kyove
                              Technician

                              50+ Posts
                              • Apr 2015
                              • 62
                              #8
                              Re: FS-C2126MFP dots and circle

                              Here is the bullettin witch I talk about on the previous post: SB-2KV-0003_B215_IT.pdf

                              Unfortunately I found only the italian bullettin but I can translate:

                              Topic
                              On certain conditions, may arise points (dots) on drum surface (see example below).

                              Technical Action
                              In order to prevent such a possible problem the engine product firmware has been revised.
                              Please update the firmware as soon as possible with the latest firmware available.
                              Refer the table below regarding the firmware package to use compared to the managed model.

                              I think is the same problem. I only have less dots compared to image on bullettin.

                              For BlackCat4866:
                              When I think to a arc drum, i first think at TASKalfa 250ci/300ci. On those MFP dots are smaller, like sand.
                              In this case dots are bigger and seems to be made with a marker.
                              Next time I post a picture of drum, charger and developer.

                                Comment

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