Bizhub C253

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  • Brischaffer
    Technician

    50+ Posts
    • Oct 2008
    • 68
    #1

    Bizhub C253

    I'm working on a NEC IT35C5, and its the equivalent to a Bizhub C253. I'm having a problem with yellow. When I do a Gradation Adj it always comes back in the values as all zeros. I've pulled the springs out in back of the drum for better contacts, replaced the HV PCB. I ran out of time today to try and swith the laser units around to see if that's the problem but I really don't think it is. I'm wondering if anyone has ever come across this problem before. The machine only has 28000 copies on it. I have one right next to it that has 3 times the amount on it. Any help would be greatly appriciated.

    Brian
    Tags: amou, bizhub, bizhub c253, c253, pulled, sound
    • bsm2
      IT Manager

      25,000+ Posts
      • Feb 2008
      • 29370
      #2
      Nec

      is there a image problem or is it just that you are reading O's on yellow unit?

        Comment

        • Brischaffer
          Technician

          50+ Posts
          • Oct 2008
          • 68
          #3
          There is an image problem too. When you do the gradation, the line that is suppose to be purple is coming out as brown.

            Comment

            • bsm2
              IT Manager

              25,000+ Posts
              • Feb 2008
              • 29370
              #4
              image

              sound like you have one or more image units bad

              have you run a mono color of each image unit and see if they are correct?
              black,cyan magenta,yellow

                Comment

                • stevelz
                  Technician
                  • Aug 2009
                  • 15
                  #5
                  Sounds like the imaging unit is bad. Replace the imaging unit and perform gradation adjustments. This should take care of your problem.

                    Comment

                    • Brischaffer
                      Technician

                      50+ Posts
                      • Oct 2008
                      • 68
                      #6
                      I don't think it is just because I have the same machine next to it and I put it in there and it works fine. I really don't think its the laser units but I'm going to go out there today and swap them around to see.

                        Comment

                        • backspace
                          Technician

                          50+ Posts
                          • Jul 2009
                          • 54
                          #7
                          RW

                          First tray stabilization then check in state confirmatin value for x and correct as necessarily then do gradiation.

                            Comment

                            • malthus
                              Technician
                              • Feb 2009
                              • 29
                              #8
                              Re: Bizhub C253

                              is the test print ie gradiation pattern ok ,are there any warnings ie p codes

                                Comment

                                • jonw
                                  Technician

                                  50+ Posts
                                  • Nov 2010
                                  • 57
                                  #9
                                  Re: Bizhub C253

                                  Mate thread was posted 2009 ! hope he's sorted it by now

                                    Comment

                                    • emujo
                                      Field Supervisor

                                      2,500+ Posts
                                      • Jun 2009
                                      • 3009
                                      #10
                                      Re: Bizhub C253

                                      Ain't it always the same..."I need help..Please, please" then never bother with any feedback. And some of these guys (girls) wonder why the usual suspect always get so much grief...Emujo
                                      If you don't see your question answered in the forum, please don't think it's OK to PM me for a personal reply...I do not give out firmware and/or manuals.

                                        Comment

                                        • malthus
                                          Technician
                                          • Feb 2009
                                          • 29
                                          #11
                                          Re: Bizhub C253

                                          if the thread is closed please advise and close the thread ,sorry i have been absent for a while
                                          malthus

                                            Comment

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