Sharp MX-2300 copy quality

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  • lenovos
    Trusted Tech

    100+ Posts
    • Oct 2012
    • 137

    #1

    [CQ] Sharp MX-2300 copy quality

    Hi all I need help with copy quality on an MX-2300. The color counter is 20,000 and black is 125k. When the customer prints a color circle graph in several colors fill is weak
    it looks kind of like orange peel on a repainted car. I have replaced the drums ran codes 44-13, 44-02, 50-22, 24-07, 44-27, 44-06, 44-26,and 46-24. These actions made no change in copy quality. On a different copier I replaced the main drive unit and transfer belt it it really improved copy quality,especially solids. I checked the main drive clutch and it is camming up. I am taking out a new transfer belt but would love to here any ideas. I have also ran the same prints and copies on my copier in the shop and they look much better. Also with the drums I replaced the main chargers and blades. Lastly the black solids look pretty good, if it makes any difference this copier was purchased from a leasing company.
  • lenovos
    Trusted Tech

    100+ Posts
    • Oct 2012
    • 137

    #2
    Re: Sharp MX-2300 copy quality

    Originally posted by lenovos
    Hi all I need help with copy quality on an MX-2300. The color counter is 20,000 and black is 125k. When the customer prints a color circle graph in several colors fill is weak
    it looks kind of like orange peel on a repainted car. I have replaced the drums ran codes 44-13, 44-02, 50-22, 24-07, 44-27, 44-06, 44-26,and 46-24. These actions made no change in copy quality. On a different copier I replaced the main drive unit and transfer belt it it really improved copy quality,especially solids. I checked the main drive clutch and it is camming up. I am taking out a new transfer belt but would love to here any ideas. I have also ran the same prints and copies on my copier in the shop and they look much better. Also with the drums I replaced the main chargers and blades. Lastly the black solids look pretty good, if it makes any difference this copier was purchased from a leasing company.
    Up date tried new primary transport belt and no change.

    Comment

    • NRTech
      Technician
      • Apr 2013
      • 45

      #3
      Re: Sharp MX-2300 copy quality

      same on everything or just prints? have you tried printing same documents from laptop, similar documents, test prints etc? there were some fill issues from certain programs on these machines, don't know if you've ruled out firmware and updates. any samples?

      also, when you replaced the drums/chargers, did you replace or clean the corona grids? these always had a habit of fouling with greeny grey shite that gave PCQ. that'd be more pale and stripey copies, but worth checking.

      Comment

      • Akitu
        Legendary Frost Spec Tech

        Site Contributor
        2,500+ Posts
        • Oct 2010
        • 2596

        #4
        Re: Sharp MX-2300 copy quality

        Originally posted by lenovos
        Hi all I need help with copy quality on an MX-2300. The color counter is 20,000 and black is 125k. When the customer prints a color circle graph in several colors fill is weak
        it looks kind of like orange peel on a repainted car. I have replaced the drums ran codes 44-13, 44-02, 50-22, 24-07, 44-27, 44-06, 44-26,and 46-24. These actions made no change in copy quality. On a different copier I replaced the main drive unit and transfer belt it it really improved copy quality,especially solids. I checked the main drive clutch and it is camming up. I am taking out a new transfer belt but would love to here any ideas. I have also ran the same prints and copies on my copier in the shop and they look much better. Also with the drums I replaced the main chargers and blades. Lastly the black solids look pretty good, if it makes any difference this copier was purchased from a leasing company.
        At 100k the primary transfer belt and black drum/dev should have been replaced together, optimally. The PTB can be stretched out to double or even triple life provided CQ maintains solid. That's the trick with these things though, as they've never been able to hold CQ more than a few hundred prints.

        Go to sim 63-11 and set your default colour balance to def 2. This places more emphasis on cyan, which these machines have always been lacking. You should see some colours that more accurately reflect what the customer wants. Follow it up with 63-08 to lock in that target and keep it there longer.

        In order from dev replacement perform 44-27, 50-28, 50-22, 63-11, 63-08, 44-02, 44-06, 44-26, 46-24 and repeat 44-26 again.

        This will give you the best quality possible for the longest time period.

        Alternatively, if after replacing the primary transfer belt and your calibrations don't improve the quality, I would look into the PWB ROMs as the culprit in your printing CQ issue. The memory chips in DIMM 3/4 control the print engine output. I've had one notable instance where the memory was a direct culprit, and it involved a gradient.

        My gradient was supposed to be green but for some reason the copier wasn't mixing the colours properly, I would have a mixed patch of cyan and yellow patches instead of a smooth green all the way through.
        Cthulhu for president! Why settle for the lesser evil?

        Comment

        • lenovos
          Trusted Tech

          100+ Posts
          • Oct 2012
          • 137

          #5
          Re: Sharp MX-2300 copy quality

          Originally posted by NRTech
          same on everything or just prints? have you tried printing same documents from laptop, similar documents, test prints etc? there were some fill issues from certain programs on these machines, don't know if you've ruled out firmware and updates. any samples?

          also, when you replaced the drums/chargers, did you replace or clean the corona grids? these always had a habit of fouling with greeny grey shite that gave PCQ. that'd be more pale and stripey copies, but worth checking.
          Hi , Firmware is current and I replaced grids too.
          Attached Files

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          • lenovos
            Trusted Tech

            100+ Posts
            • Oct 2012
            • 137

            #6
            Re: Sharp MX-2300 copy quality

            The light copy is customers copier.

            Comment

            • NRTech
              Technician
              • Apr 2013
              • 45

              #7
              Re: Sharp MX-2300 copy quality

              man, that's nasty! I know that doesn't help, how does the formed image look on the drums/PTB if you stop it mid flow?

              Comment

              • divad2k1
                Trusted Tech

                100+ Posts
                • Sep 2010
                • 147

                #8
                Re: Sharp MX-2300 copy quality

                Just curious, have you tried a better paper quality ?

                Comment

                • harps05
                  Field Service Engineer

                  100+ Posts
                  • Mar 2012
                  • 109

                  #9
                  Re: Sharp MX-2300 copy quality

                  Originally posted by divad2k1
                  Just curious, have you tried a better paper quality ?
                  My thoughts also

                  Comment

                  • spanky
                    Trusted Tech

                    250+ Posts
                    • Sep 2012
                    • 468

                    #10
                    Re: Sharp MX-2300 copy quality

                    how old is the color developer? If it is very old it should be replaced. The 20K counter doesn't mean anything if the developer is over 2 yrs old.

                    Comment

                    • faxman28
                      Trusted Tech

                      Site Contributor
                      250+ Posts
                      • Nov 2010
                      • 436

                      #11
                      Re: Sharp MX-2300 copy quality

                      check the fuser rollers. upper roller starts to seperate after some time. usually it starts at the end of the roller.
                      also when you replaced the transfer belt, was it just the belt or a new transfer unit? if it was just the belt , check the transfer rollers, they used to corrode under the black conductive covering and would cause cq issues(usually mottled copies).

                      Comment

                      • CrapAimer
                        Trusted Tech

                        250+ Posts
                        • Jan 2010
                        • 296

                        #12
                        Re: Sharp MX-2300 copy quality

                        Change the Developer had to do it the other day Piss poor machines

                        Comment

                        • gbfan
                          Technician
                          • Aug 2010
                          • 19

                          #13
                          Re: Sharp MX-2300 copy quality

                          three things come to mind-

                          1) the black rollers under the primary transfer belt- they come with the secondary transferbelt (go figure) they will get build up (or pitted) on them. This will not give you an even fill.

                          2) developer

                          3) better paper better fill

                          keep in mind you stated it was a lease return- did you do maintenance? if not company that sent it in may not have left "good" dv in it. so your counters may not reflect copies actually on it.

                          Comment

                          • docteceng
                            Technician
                            • Jul 2011
                            • 12

                            #14
                            Re: Sharp MX-2300 copy quality

                            just a thought you got from a lease company does it have original toner in it and not generic cartridges i have come across some machines with that stuff in them..no good.will need changing ,service and calibrated.

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