Sharp FO-4400 dirty copies

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  • MHeon71
    Trusted Tech

    Site Contributor
    250+ Posts
    • Oct 2008
    • 489

    #1

    Sharp FO-4400 dirty copies

    Receiving faxes they have dirty copies. I replaced the drum, toner and transfer roller within the last month and the issue is back. It is an ongoing problem. The fax machine has about 95 k on it. Any ideas would be appreciated.
  • travi
    Trusted Tech

    Site Contributor
    100+ Posts
    • Jan 2008
    • 129

    #2
    Check out the teflon roller. I can have a toner build up.

    Comment

    • MHeon71
      Trusted Tech

      Site Contributor
      250+ Posts
      • Oct 2008
      • 489

      #3
      I have just replaced the fuser unit. You can see the problem on the toner and drum cartridge. It just keeps reoccurring. Last I checked it was 7K and I had to replace the units again.

      Comment

      • mtech
        Technician

        250+ Posts
        • Mar 2007
        • 307

        #4
        You may have an issue with the transfer roller or the HV connector assy. Both really suck to replace. Next time you get the background try doing an all memory clear before changing anything. If it fixes your issue the customer needs to get a good surge protector. I had a few machines do this to me and that was the fix. If you check the machine specs in the manual it says the fuser life is 50K and the machine life is 50K!! What the hell are they talking about!
        Good luck

        Comment

        • blackcat4866
          Master Of The Obvious

          Site Contributor
          10,000+ Posts
          • Jul 2007
          • 22997

          #5
          I know it's expensive, but if your seeing the toner buildup on the mag roller or drum, I replace both units. Are these OEM units? =^..^=
          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

          • tmaged
            Owner/Service Manager

            Site Contributor
            1,000+ Posts
            • Oct 2008
            • 1867

            #6
            It's over !

            This is out of the DC535 Manual. I'm sure the FO-4400 wouldn't be any longer, but It's not in the manual that I could find. 75K is the life of the machine. I just replaced a DC535 that had 120K on it doing the same thing. I replaced the drum in November, they called last week with dirty prints. Sold them a new unit.
            My guess would be the transfer roller since it's really the only thing in there that would affect the drum?
            Attached Files
            Hope that helps !
            -Tony
            www.dtios.com
            Become a fan on Facebook

            Comment

            • MHeon71
              Trusted Tech

              Site Contributor
              250+ Posts
              • Oct 2008
              • 489

              #7
              On one machine I did replace the drum, toner, transfer roller, HV unit. So far it has not come back. I am not sure if I gave it enough time yet. I got to check. I think I will replace the same things.

              I did point out the life cycle to a few people and they all seem to dismiss it.

              Comment

              • fireater
                Repair God? not quite

                250+ Posts
                • Apr 2006
                • 253

                #8
                oem sharp drum and toner or are they shudder.... GENERIC?
                I fix copiers ...Well Sorta

                Comment

                • MHeon71
                  Trusted Tech

                  Site Contributor
                  250+ Posts
                  • Oct 2008
                  • 489

                  #9
                  They are Sharp cartridges.

                  Comment

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