DF-790

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  • senady
    • May 2025
    #1

    [Jamming] DF-790

    I have a new DF-790. The problem is the machine will come to ready and the finisher is not going through any type of warm up. When I press the start button, the machine shows JAM 0300 on the screen, but machine never tries to pick up paper so there is no paper in machine. If I open the front door of finisher it will clear jam code and try to run again with same results. In service mode I am not able to activate any motors or solenoids for the finisher.
    Does anyone have something like this?
    Tags: None
    • Zackuth
      Trusted Tech

      250+ Posts
      • Aug 2009
      • 448
      #2
      Re: DF-790

      Have you looked at the connectors for the finisher that get installed with the bridge unit?
      If at first you don't succeed, redefine success

        Comment

        • blackcat4866
          Master Of The Obvious

          Site Contributor
          10,000+ Posts
          • Jul 2007
          • 22927
          #3
          Re: DF-790

          Clearly, you've got a communication issue, and the four usual suspects:

          Pigtail
          Main PWB
          Finisher PWB
          Firmware

          ... in that order. You didn't mention the host machine ... are you sure it's compatible? DF-790 versus DF-790(B)?
          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

            • rstarr
              Junior Member

              Site Contributor
              • Aug 2011
              • 9
              #4
              Re: DF-790

              Did you install a puch unit if you did plug the shifter motor in

                Comment

                • NeoMatrix
                  Senior Tech.

                  2,500+ Posts
                  • Nov 2010
                  • 3514
                  #5
                  Re: DF-790

                  Sounds like a firmware issue.
                  The TA300ci would jamb random from brand new when all accessory's where installed as new.
                  Udate the firmware immediately an you had a working machine.
                  Inauguration to the "AI cancel-culture" fraternity 1997...
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