RZ 390UI P19-207 and Master Making Unit Issues

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  • dancycat
    • Jun 2025

    #1

    RZ 390UI P19-207 and Master Making Unit Issues

    Hello!

    I have a RZ 390UI and am having issues with the master making unit. The error code is P19-207, which in the tech manual says the error condition is "TPH pressure sensor does not go OFF within 2 seconds after thermal-pressure activates in the decompressing direction, or during home positioning operation". I am not sure what to do fix this, since the Risograph won't unlock the Master Making Unit Release so I can't get in there. Any tips on how to open the Master Making Unit? Or, what to do once I am able to open it?

    Thanks!
  • VENRISO
    Technician

    Site Contributor
    50+ Posts
    • Jul 2015
    • 72

    #2
    Re: RZ 390UI P19-207 and Master Making Unit Issues

    Hi check the gears in the pressure system of tph it has a gear which always breaks has a screw un the middle

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    • dancycat

      #3
      Re: RZ 390UI P19-207 and Master Making Unit Issues

      Thanks! That part was broken, just ordered a new one to replace!

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