HP 4345 /Jamming at Reversing unit

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  • cucuklotz
    Senior Tech

    Site Contributor
    500+ Posts
    • Mar 2007
    • 611
    #1

    HP 4345 /Jamming at Reversing unit

    Hi
    I replaced the fuser and swing plate unit 2 weeks ago and the customer has been calling with
    periodic jamming .I went to machine and Im getting frequent jams at fuser entrance ,somtimes looking
    slightly raised.Is it possible to put the reversing fan in backwards and cause this type of problem.
    It is the only 4345 I work on and Im not sure which way fan went in machine,
    THANKS FOR ANY HELP
    ANDY
    Tags: fan, fuser, reversing, unit
    • zoraldinho
      teacher-guide-expert-guru

      Site Contributor
      5,000+ Posts
      • Mar 2008
      • 5005
      #2
      Re: HP 4345 /Jamming at Reversing unit

      Hi Andy!

      I have similar problems with refubish fusers.
      I'm not sure if the fan can turn backwards but you can check it. On this model, the fans are facing with inscription and cables on inside.What is the jam code?
      On this model, I had to replace the swing plate several times.
      Last edited by zoraldinho; 12-29-2017, 09:17 AM.
      If it ain't broke, don't fix it
      A picture is worth a thousand words

        Comment

        • theengel
          Service Manager

          1,000+ Posts
          • Nov 2011
          • 1784
          #3
          Re: HP 4345 /Jamming at Reversing unit

          Maybe just a bad fuser... coincidence?

            Comment

            • OMG
              Technician
              • May 2016
              • 31
              #4
              Re: HP 4345 /Jamming at Reversing unit

              Bad reversing assy.

                Comment

                • cucuklotz
                  Senior Tech

                  Site Contributor
                  500+ Posts
                  • Mar 2007
                  • 611
                  #5
                  Re: HP 4345 /Jamming at Reversing unit

                  Hi
                  Sorry about delay in replying and thanking everybody for replys and help.I replace with ANOTHER REFURBISHED FUSER and I think machine has worked better
                  with less jamming at fuser but not perfect as I still got some jams,Customer hasnt complained but I still feel
                  problem not completely resolved.
                  THANKS ANDY

                    Comment

                    • mjunkaged
                      Trusted Tech

                      250+ Posts
                      • Feb 2009
                      • 382
                      #6
                      Re: HP 4345 /Jamming at Reversing unit

                      Have been dealing with a similar problem on one unit, fixed 1 year ago by replacing the reversing guide assembly that hangs off the top (it has a sensor actuator/flag that drops into the sensor on the reverse ass'y just to left of toner cart.
                      Error 13.0A, unspecified jam, with 'jam in top cover area' message. The actuator literally has worn off the corner and the paper can't quite push it into the sensor below it any longer.
                      I'm going back with fuser, toner cart, and the guide assembly in question. I'm also wondering if the two springs that maintain pressure could be fatigued and contributing to the problem, so I"m going to stretch them out a bit, and see what happens. Especially if I see no wear on theirs, just installed 1 yr. ago.

                      You can do a sensor check as directed by the service manual and nail down a dirty flaky sensor as well. You can work each sensor by hand with the shell open, very useful!!!!

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