C759 IU life not reset

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  • rrrohan
    Service Manager

    Site Contributor
    1,000+ Posts
    • Sep 2011
    • 1971

    C759 IU life not reset

    I changed a set of IUs in a C759

    One was clipped in properly and gave a C2255 error. I reseated and all was ok how ever IU life did not reset

    The install and yeild prediction date are the same and match the date of install yesterday.

    Any ideas on how to get around this?

    Sent from my Pixel 4 XL using Tapatalk
  • tsbservice
    Field tech

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

    #2
    Re: C759 IU life not reset

    FW latest and correct function version chosen?
    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

    • copier tech
      Field Supervisor

      5,000+ Posts
      • Jan 2014
      • 7931

      #3
      Re: C759 IU life not reset

      Originally posted by rrrohan
      I changed a set of IUs in a C759

      One was clipped in properly and gave a C2255 error. I reseated and all was ok how ever IU life did not reset

      The install and yeild prediction date are the same and match the date of install yesterday.

      Any ideas on how to get around this?

      Sent from my Pixel 4 XL using Tapatalk
      I would say that when the machine threw the error it corrupted the count.

      But this is no big deal, put a label on the drum with the current counter.

      As mentioned above you could try updating the firmware & function version.


      Let us eat, drink, and be merry, because tomorrow we may die!

      For all your firmware & service manual needs please visit us at:

      www.copierfirmware.co.uk - www.printerfirmware.co.uk

      Comment

      • byronf
        Senior Member

        100+ Posts
        • Sep 2017
        • 109

        #4
        Re: C759 IU life not reset

        Originally posted by rrrohan
        I changed a set of IUs in a C759

        One was clipped in properly and gave a C2255 error. I reseated and all was ok how ever IU life did not reset

        The install and yeild prediction date are the same and match the date of install yesterday.



        Any ideas on how to get around this?

        Sent from my Pixel 4 XL using Tapatalk

        Comment

        • tsbservice
          Field tech

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

          #5
          Re: C759 IU life not reset

          Good idea byronf. Maybe previous engineer activated New Release Disable mode and left the machine.
          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

          • Max
            Senior Tech

            500+ Posts
            • Oct 2011
            • 526

            #6
            Re: C759 IU life not reset

            It doesn't last indefinitely. It reverts back to normal mode fairly quickly.

            Comment

            • rrrohan
              Service Manager

              Site Contributor
              1,000+ Posts
              • Sep 2011
              • 1971

              #7
              Re: C759 IU life not reset

              Yeah it wasn't that. I just installed a new drum on same copier and counts for that reset. IUs still incorrect

              Sent from my Pixel 4 XL using Tapatalk

              Comment

              • rrrohan
                Service Manager

                Site Contributor
                1,000+ Posts
                • Sep 2011
                • 1971

                #8
                Re: C759 IU life not reset

                i just had it on another c759 today
                IMG-20210603-WA0005.jpg

                Comment

                • rrrohan
                  Service Manager

                  Site Contributor
                  1,000+ Posts
                  • Sep 2011
                  • 1971

                  #9
                  Re: C759 IU life not reset

                  i just checked on CSRC status of the original copier in question and its giving conflicting info

                  Device Home is reporting Parts Life warning on CYM IU but PM parts show 58% which is correct1.jpg2.jpg

                  Comment

                  • Oystercopy
                    Senior Tech

                    Site Contributor
                    500+ Posts
                    • Oct 2009
                    • 579

                    #10
                    Re: C759 IU life not reset

                    As far as I know, there would be no reason why a new Drum Unit would not reset its respective life settings. UNLESS you were using generic, non-OEM units whose chips did not jive with the machine, for whatever reason. And remember, although you may have new units in there, the machine will still think the units are old and still try to adjust CQ accordingly. If they were OEM units, I would also double check that the chip(s) are not bent down and not contacting the frame for whatever reason.
                    OC

                    Comment

                    • tsbservice
                      Field tech

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

                      #11
                      Re: C759 IU life not reset

                      Originally posted by rrrohan
                      i just had it on another c759 today
                      [ATTACH=CONFIG]49328[/ATTACH]
                      So it's affecting only CMY IUs on both machines. What did you say about FW versions?
                      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

                      • blinxwap
                        Technician

                        50+ Posts
                        • Jun 2020
                        • 80

                        #12
                        Re: C759 IU life not reset

                        I have the same issue on a B758 Replaced the drum unit in march 2021, counter doesnt reset replaced another drum in july & developing unit the dev unit counter resetted not the drum unit would appreciate any help mc has 2.7 mil copies on it firmware X8

                        Sent from my SM-A725F using Tapatalk

                        Comment

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