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Thread: RISO RZ 390 UI

  1. #1
    Junior Member
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    Jan 2017
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    RISO RZ 390 UI

    right now i am having a horible time trying to find out how to correct an error code on my riso rz390 ui

    the error code is: p05-604

    i had an inking problem from not having oem ink and now i think its jumped out of time or something.....


  2. #2
    Senior Tech 250+ Posts 20gaugeO/U's Avatar
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    Feb 2009
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    Re: RISO RZ 390 UI

    It's actually T05-604, something lost in Riso Translation. Vertical Print Positioning motor lock is the code. Turn the machine off, hold the yellow reset down and keep it held down while the machine boots up, when it stops beeping and things stop moving release the reset key.
    The motor is in the upper right area when the back cover is off. If you think the machine is out of time you'll need a Tech Manual to check all the timing marks and know what you are looking at. Take the back cover off and take a can of air to the sensors in the back (behind the 2 large PCB's).


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