KM BH258 Printing problem

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  • giogio80
    • May 2025
    #1

    KM BH258 Printing problem

    Hello.

    Just received a brand new drum units and changed that. Transfer Belt is also changed and good, but still keeps printing stripes on the solid color. shuffling color drums but no reaction only Cyan and Black makes stripes. Please help if somebody had such experience. I think Developer unit is not so bad as well. Please help!!!


    Here are photos
    Attached Files
    Tags: color, experience, printing, stripes
    • CopierNerd
      Trusted Tech

      100+ Posts
      • Feb 2015
      • 194
      #2
      Re: KM BH258 Printing problem

      You have swapped drum units but the problem is still there. So issue is not with the drum units. It is cleared.

      Now come to the second point which is Transfer belt, you have replaced transfer belt unit and it is good. when it is new it would be best. You didn't attach snapshot of transfer belt unit's life. Problem can be with black and cyan transfer rollers inside transfer belt. High voltage unit can also be the cause of this problem.

      3rd point is Developing units if you have checked them, brush OK? "K" DV unit life is expired almost, but this is not the reason.

        Comment

        • Toxic
          Senior Tech

          500+ Posts
          • Dec 2009
          • 694
          #3
          Re: KM BH258 Printing problem

          I would check first developing units and developing rolers for cyan and black color.

            Comment

            • tsbservice
              Field tech

              Site Contributor
              5,000+ Posts
              • May 2007
              • 7922
              #4
              Re: KM BH258 Printing problem

              Yep, looks like uneven pitch at 28 mm intervals. Definitely developing units.
              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

                • blackcat4866
                  Master Of The Obvious

                  Site Contributor
                  10,000+ Posts
                  • Jul 2007
                  • 22937
                  #5
                  Re: KM BH258 Printing problem

                  Originally posted by tsbservice
                  Yep, looks like uneven pitch at 28 mm intervals. Definitely developing units.
                  Like they said: developing units. OEM supplies? =^..^=
                  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

                    • Albonline
                      Service Manager

                      1,000+ Posts
                      • Sep 2008
                      • 1132
                      #6
                      Re: KM BH258 Printing problem

                      would be looking at the drive system for those developers.

                        Comment

                        • giogio80
                          #7
                          Re: KM BH258 Printing problem

                          Can I buy Roller only for developer unit?? because entire developer unit is not cheap. and if yes please can anyone give me proper part numbers for that DV313C and DV313K units ???

                            Comment

                            • CopierNerd
                              Trusted Tech

                              100+ Posts
                              • Feb 2015
                              • 194
                              #8
                              Re: KM BH258 Printing problem

                              Originally posted by giogio80
                              Can I buy Roller only for developer unit?? because entire developer unit is not cheap. and if yes please can anyone give me proper part numbers for that DV313C and DV313K units ???
                              As far as i know you cannot buy developing roller only. Its whole developing unit as you know it. There is no part number for this single part. You can take it from old developing units if you do not want to purchase new.

                                Comment

                                • JR2ALTA
                                  Service Manager

                                  Site Contributor
                                  1,000+ Posts
                                  • Feb 2010
                                  • 2028
                                  #9
                                  Re: KM BH258 Printing problem

                                  Originally posted by giogio80
                                  Can I buy Roller only for developer unit?? because entire developer unit is not cheap. and if yes please can anyone give me proper part numbers for that DV313C and DV313K units ???
                                  If you want cheap you're in the wrong business. Or least sell Kyocera and it'll be under warranty.

                                    Comment

                                    • Copier Addict
                                      Aging Tech

                                      Site Contributor
                                      10,000+ Posts
                                      • Jul 2013
                                      • 14400
                                      #10
                                      Re: KM BH258 Printing problem

                                      You never mentioned if you tried cleaning the printhead.

                                        Comment

                                        • 3ktlc
                                          Trusted Tech

                                          Site Contributor
                                          100+ Posts
                                          • Feb 2018
                                          • 180
                                          #11
                                          Re: KM BH258 Printing problem

                                          Have had a couple of dev units cause this in the past.

                                            Comment

                                            • giogio80
                                              #12
                                              Re: KM BH258 Printing problem

                                              Purchased New developer unit (Black one) Changed and the same problem again. Now a bit confused ... :/
                                              Attached Files

                                                Comment

                                                • Toxic
                                                  Senior Tech

                                                  500+ Posts
                                                  • Dec 2009
                                                  • 694
                                                  #13
                                                  Re: KM BH258 Printing problem

                                                  Maybe i cant see good but in first post i can see white void areas and on the last sample it looks like magenta areas on black ...?

                                                    Comment

                                                    • blackcat4866
                                                      Master Of The Obvious

                                                      Site Contributor
                                                      10,000+ Posts
                                                      • Jul 2007
                                                      • 22937
                                                      #14
                                                      Re: KM BH258 Printing problem

                                                      What interval does it repeat? =^..^=
                                                      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

                                                        • Phil B.
                                                          Field Supervisor

                                                          10,000+ Posts
                                                          • Jul 2016
                                                          • 22798
                                                          #15
                                                          Re: KM BH258 Printing problem

                                                          Originally posted by giogio80
                                                          Purchased New developer unit (Black one) Changed and the same problem again. Now a bit confused ... :/ [ATTACH=CONFIG]41764[/ATTACH][ATTACH=CONFIG]41764[/ATTACH]
                                                          looks to me the defect pattern has changed and I agree now a magenta tint.

                                                          did you init the dev unit properly?

                                                            Comment

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