Pattern on prints shows up on black C454e

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  • tsbservice
    Field tech

    Site Contributor
    5,000+ Posts
    • May 2007
    • 7970

    #31
    Re: Pattern on prints shows up on black C454e

    Originally posted by positiveg
    ok let me see if I can get a bushing for the unit and also a new K powder

    I don't think there is enough in there to get any reasonable prints to be honest.
    1. All missing powder should lay in WTB.
    2. Don't just replace powder replace developer unit. K one is dirt cheap.
    This is very important new unit will do new release and will initialize machine readings for proper tune up, calibration and gradations. Otherwise you're asking for troubles.
    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.

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    • positiveg
      Trusted Tech

      250+ Posts
      • Jun 2018
      • 299

      #32
      Re: Pattern on prints shows up on black C454e

      Originally posted by tsbservice
      I don't recommend putting another developer into machine especially from other brand. Besides your new developer unit would quickly finish in WTB if Synthohol is right(like 90%). Your best bet for short time is to take developer from WTB with help of magnet then fill up developer unit remove bushings and clean them or atleast one for black unit. You may get some results that way waiting for new bushing and K developer unit.
      Thanks for the assistance,
      I'm guessing the bushings could also be changed.
      If so can you provide me with the part number
      ?

      Comment

      • Synthohol
        Certified Konica Expert

        Site Contributor
        5,000+ Posts
        • Mar 2016
        • 5797

        #33
        Re: Pattern on prints shows up on black C454e

        Error codes C2551, C2553, C2555 and C2557 are related to abnormal low toner density.
        Root Cause
        Toner is leaking from the toner seal onto the bushing of the transfer screw.

        Workaround/Fix
        Replace the toner seal (p/n A5C1RA0000).
        We know a thing or two because we've seen a thing or two.
        The medication helps though...

        Comment

        • femaster
          Service Manager

          1,000+ Posts
          • May 2011
          • 1478

          #34
          Re: Pattern on prints shows up on black C454e

          Originally posted by Synthohol
          Error codes C2551, C2553, C2555 and C2557 are related to abnormal low toner density.
          Root Cause
          Toner is leaking from the toner seal onto the bushing of the transfer screw.

          Workaround/Fix
          Replace the toner seal (p/n A5C1RA0000).
          I've had luck with just removing the white part and cleaning it and the auger chamber out. I've only come across this issue on 2 machines (both on the black hopper) and have never replaced a part yet. The one I remember the most happened at about 80K pages. Since cleaning, it is up over 550K now and never had the problem come back.

          Even if it was cleaned out as a temporary fix, it should last quite a while afterwards.
          Last edited by femaster; 10-17-2020, 06:11 AM.
          A Ricoh Service Tech for 7 year. A Konica Minolta Service Tech for 7 years. Now, KM service manager for 4 years.
          My Ricoh knowledge is slowly dwindling away at this point. Many things have been lost to time...

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          • positiveg
            Trusted Tech

            250+ Posts
            • Jun 2018
            • 299

            #35
            Re: Pattern on prints shows up on black C454e

            Originally posted by femaster
            I've had luck with just removing the white part and cleaning it and the auger chamber out. I've only come across this issue on 2 machines (both on the black hopper) and have never replaced a part yet. The one I remember the most happened at about 80K pages. Since cleaning, it is up over 550K now and never had the problem come back.

            Even if it was cleaned out as a temporary fix, it should last quite a while afterwards.
            Thanks. Too.
            I am trying to get some developer back on Island. Then will confirm if this work.
            I'm also going to try another user here comment here where they say to try getting the developer powder from the WTB until such time.
            I'm in my 'By all means necessaryv mode thanks

            Sent from my SM-G955F using Tapatalk

            Comment

            • positiveg
              Trusted Tech

              250+ Posts
              • Jun 2018
              • 299

              #36
              Re: Pattern on prints shows up on black C454e

              I've searched for the part number and still haven't been able to find a seller of the part. There's this store I usually get my stuff from it's not showing.
              Kinda strange to not have another place selling parts,.
              Anyway will share the results of the cleanup plan is to work on it tomorrow.


              Sent from my SM-G955F using Tapatalk

              Comment

              • suomi
                Trusted Tech

                100+ Posts
                • Oct 2008
                • 152

                #37
                Re: Pattern on prints shows up on black C454e

                I once had ALL the develop unit look the same. Need to replace the high voltage card & then new dv units..
                Old dv unit is dead. The device cannot adjust the defective one. Wonderfully expensive...

                Comment

                • positiveg
                  Trusted Tech

                  250+ Posts
                  • Jun 2018
                  • 299

                  #38
                  Re: Pattern on prints shows up on black C454e

                  Thanks to @Synthohol and others who really assisted
                  Well today i cleaned out the bushings, thanks again man for the illustration
                  And I added some dev powder back into the unit and I'm getting blacks
                  Don't know how long it may last but I'm hoping for the best till the main printer is back up and running then can take a good look at this one
                  Please see the scans of the print test
                  good prints oct 19.pdf
                  thanks again all

                  Comment

                  • Synthohol
                    Certified Konica Expert

                    Site Contributor
                    5,000+ Posts
                    • Mar 2016
                    • 5797

                    #39
                    Re: Pattern on prints shows up on black C454e

                    if you use OEM toner, there is developer mixed in with the bottle that replenishes small amounts that get trashed during normal use.
                    it will balance itself eventually i hope.
                    good luck!
                    We know a thing or two because we've seen a thing or two.
                    The medication helps though...

                    Comment

                    • positiveg
                      Trusted Tech

                      250+ Posts
                      • Jun 2018
                      • 299

                      #40
                      Re: Pattern on prints shows up on black C454e

                      Originally posted by Synthohol
                      if you use OEM toner, there is developer mixed in with the bottle that replenishes small amounts that get trashed during normal use.
                      it will balance itself eventually i hope.
                      good luck!
                      Konika
                      Thinking of getting another once things pick back up business wise
                      only drawback there are no Konika service on island here.

                      Comment

                      • Synthohol
                        Certified Konica Expert

                        Site Contributor
                        5,000+ Posts
                        • Mar 2016
                        • 5797

                        #41
                        Re: Pattern on prints shows up on black C454e

                        dont know if they would send anyone from PR but here are the authorized dealers from there, its the closest i could find.

                        Document Support, Inc.
                        Ave. Iturregui MM-7 Calle 420
                        Carolina, PR 00982
                        Contact: Israel Levi
                        Phone: 787-294-9663
                        Email: ilevi@dsincpr.com

                        IGM Corp.
                        Carretera 199 Km 1.2
                        Bo. Los Frailes
                        Guaynabo, PR 00969
                        Contact: Jose Irizarry
                        Phone: 787-622-0850
                        Email: jirizarry@igmpr.com

                        Caribbean Data Systems, Inc.

                        636 Av. San Patricio
                        San Juan, PR 00920
                        Contact: J. Mustelier
                        Phone: 787-774-6969
                        Email: jmustelier@caribbeandata.com
                        We know a thing or two because we've seen a thing or two.
                        The medication helps though...

                        Comment

                        • positiveg
                          Trusted Tech

                          250+ Posts
                          • Jun 2018
                          • 299

                          #42
                          Re: Pattern on prints shows up on black C454e

                          Originally posted by Synthohol
                          dont know if they would send anyone from PR but here are the authorized dealers from there, its the closest i could find.

                          Document Support, Inc.
                          Ave. Iturregui MM-7 Calle 420
                          Carolina, PR 00982
                          Contact: Israel Levi
                          Phone: 787-294-9663
                          Email: ilevi@dsincpr.com

                          IGM Corp.
                          Carretera 199 Km 1.2
                          Bo. Los Frailes
                          Guaynabo, PR 00969
                          Contact: Jose Irizarry
                          Phone: 787-622-0850
                          Email: jirizarry@igmpr.com

                          Caribbean Data Systems, Inc.

                          636 Av. San Patricio
                          San Juan, PR 00920
                          Contact: J. Mustelier
                          Phone: 787-774-6969
                          Email: jmustelier@caribbeandata.com
                          thanks much
                          Yeah I'm sure they'll send a tech once you're willing to pay for it lol .
                          Think I've heard of Caribbean Data Sys, think they are HP dealers also.

                          Comment

                          • REGSIS
                            Trusted Tech

                            250+ Posts
                            • May 2016
                            • 434

                            #43
                            Re: Pattern on prints shows up on black C454e

                            Originally posted by positiveg
                            Thanks to @Synthohol and others who really assisted
                            Well today i cleaned out the bushings, thanks again man for the illustration
                            And I added some dev powder back into the unit and I'm getting blacks
                            Don't know how long it may last but I'm hoping for the best till the main printer is back up and running then can take a good look at this one
                            Please see the scans of the print test
                            [ATTACH]47027[/ATTACH]
                            thanks again all
                            Good result!
                            Regarding the white bushing - worn one can cause c2557 abnormal low toner K density, but then machine will stop and (in theory) should not cause developer loss. K output will be faint as toner density will be 1% or 2%.
                            When you take out the bushing and look inside, you will see toner. In that case replace it. If it's clean then it's not necessary. Replace with modified ones - metal bearnig inside.

                            Regarding developer - permanent magnet on magnet roller should hold back developer, and bias voltage from HV board should hold back toner.
                            In theory HV board failure will result in solid black (or colour) image (no Vb or no Vg). It will not suck out developer. Voltages can be checked in State confirmation --》 Table number.
                            Only sparks from worn drums can take it out little by little.

                            Using OEM toner will recouperate developer and after few thousands prints brush on magnet roller will be perfect again.

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