Kyocera Taskalfa 4551ci blue and yellow dots

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  • tanner
    Junior Member
    • Dec 2022
    • 4
    #1

    Kyocera Taskalfa 4551ci blue and yellow dots

    So I am having an issue with our Kyocera Taskalfa 4551ci. Whenever I do colored prints I always get these 5 yellow dots in the same position on every paper and especially with full-page colored pictures I get these blue splotches/dots across the image that seem to be roughly in the same area as the yellow dots. I have done all the calibrations and cleaned the drum units and developer units. I assume I am needing to replace the drum units, developer units, or both. But I was wondering if anyone has had this problem and if it is the drums and developers or something else. Thanks.
    Kyocera_20221206083125.jpg
    Tags: colored, dots, kyocera, units, yellow
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22753
      #2
      Re: Kyocera Taskalfa 4551ci blue and yellow dots

      If those spots are repeating at 37.5mm intervals, you'll need to replace primary charge unit(s).

      Try printing this image to see which color primary charge units need to be replaced:
      Attached Files
      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

        • tanner
          Junior Member
          • Dec 2022
          • 4
          #3
          Re: Kyocera Taskalfa 4551ci blue and yellow dots

          Printed the file and seems to still have the blue and yellow dots. Do you think I can just replace the charge rollers or should I look into replacing the whole unit? Thanks for the quick response!
          7.jpg6.jpg5.jpg4.jpg3.jpg2.jpg1.jpg

            Comment

            • davidmtupper
              Trusted Tech

              250+ Posts
              • Jul 2021
              • 326
              #4
              Re: Kyocera Taskalfa 4551ci blue and yellow dots

              The dots are from the charge rollers, if the drums are in good shape and not near end of life you can replace just the rollers. If they are close to end of life it would probably be better to replace the drums, which would include new charge rollers.

                Comment

                • tanner
                  Junior Member
                  • Dec 2022
                  • 4
                  #5
                  Re: Kyocera Taskalfa 4551ci blue and yellow dots

                  Sounds good. I think I'll just end up replacing all the drums. The Machine I assume has well passed the mileage of these drums with the printer being at 326k sheets. Thanks for all the help!

                    Comment

                    • ntbann
                      Senior Tech

                      500+ Posts
                      • Jan 2012
                      • 618
                      #6
                      Re: Kyocera Taskalfa 4551ci blue and yellow dots

                      Drums are rated for 600k.

                        Comment

                        • blackcat4866
                          Master Of The Obvious

                          Site Contributor
                          10,000+ Posts
                          • Jul 2007
                          • 22753
                          #7
                          Re: Kyocera Taskalfa 4551ci blue and yellow dots

                          I think that you'll find that cost prohibitive. I think that I would start with four primary charge units. =^..^=
                          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

                            • BillyCarpenter
                              Field Supervisor

                              Site Contributor
                              VIP Subscriber
                              10,000+ Posts
                              • Aug 2020
                              • 15238
                              #8
                              Re: Kyocera Taskalfa 4551ci blue and yellow dots

                              This thread makes me laugh little. OP asks for advice. Gets the same advice from everyone and that is the replace the PCR's. OP says, nah, I think I'll replace all the drums.
                              Adversity temporarily visits a strong man but stays with the weak for a lifetime.

                                Comment

                                • tanner
                                  Junior Member
                                  • Dec 2022
                                  • 4
                                  #9
                                  Re: Kyocera Taskalfa 4551ci blue and yellow dots

                                  I'll definitely try just replacing the PCR's. The reason for me just saying I'll replace the whole drums was that I was thinking they had generally the same life span as the fuser unit I just replaced which was rated for 300k. Now that I know the drums are rated for 600k It's definitely worth trying the PCR's and hopefully saving some money. Thanks again for the advice, I'm not super familiar with working on this printer so it helps a lot.

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