RISO RZ-990

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  • jackhale
    • Jun 2025

    #1

    RISO RZ-990

    Hi all, can someone please tell me what the error code T-20 437 is on my Riso RZ-990? It starts to feed and the belts go around but it just makes a sound like air escaping and won't feel paper.

    Thanks for the help
    Jack
  • VENRISO
    Technician

    Site Contributor
    50+ Posts
    • Jul 2015
    • 72

    #2
    Re: RISO RZ-990

    Two things need to check the paper output motor, the RZ model has a piece of plastic that breaks and produces that failure, I'm going to show you a picture

    IMG_20170223_122804.jpgIMG_20170223_122757.jpg

    If you have the model of the photo, maybe the screw "allen" is loose,

    Comment

    • filmplane
      Technician

      50+ Posts
      • Nov 2014
      • 84

      #3
      Re: RISO RZ-990

      Originally posted by jackhale
      Hi all, can someone please tell me what the error code T-20 437 is on my Riso RZ-990? It starts to feed and the belts go around but it just makes a sound like air escaping and won't feel paper.

      Thanks for the help
      Jack
      Here is the direct download page from Riso for the Technical Manual for the RZ series:
      Search

      Select RZ as "Series" and Document Type "Manual" from the drop downs and the RZ9 Tech Manual is there in all its glory. Very helpful for troubleshooting issues and understanding various error codes and the machine in general. Good luck!
      Last edited by filmplane; 02-23-2017, 05:31 PM. Reason: clarity of manual downlaod location

      Comment

      • jackhale

        #4
        Re: RISO RZ-990

        "Thanks all for the info. I am going to do some reading and see if I can't figure this out."

        Jack

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