Question about Riso RZ220 Duplicator

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Rizo RZ220UI drum will not go completely back into machine

This has happened before but we had our resident expert here. He is gone now and we do not want to damage the machine and need advice. The drum goes nearly in and the front door will not close

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  • ritabochita Jan 07, 2009

    the drum went in but the light is still on and I can't get it to function. I unplugged it hoping that it needs reset. any advice


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The drum fits into a drive cog on the back side

pull the drum out look at the way it is inset and push back in with pressure and rotate until it goes in a little farther then you should be able to close the door

ther should be some type of latch or knob to turn when you get the drum in positon

Good luck

Posted on Jan 07, 2009

  • Steve Archer Jan 07, 2009

    remove the paper feed area and look for any paper in the feed and exit area

    also make sure all safety switches( door switches and levers) are properly closed

    also look for a reset button usually a black button inside door where latch is

    the light indicates a switch is open just tap on all doors with the palm of your hand or open and close firmly


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I want to help but I am a bit confused. First of all just to provide you with additional info, there are basically three criteria that cause a need to replace the drum. One ,as in your case,is when the waste toner level reaches a level that the waste toner sensor gets covered with toner and it gives you the prompt you received. What happens is that despite the fact that in an ideal world ALL of the the image that is formed on the drum to be transferred to the paper actually does transfer completely and therefore no waste. Real world is that a small portion of the image remains on the drum and is cleaned off and deposited "into" the cavity of the drum where the waste toner receptacle resides and the waste toner sensor does as well. Once the waste toner sensor sees an excessive level it generates the prompt you received and the cpu begins to count pages (and I'll be d$%&ED if I can find the exact number) and if the drum is not replaced the device will give an error code and shut down. We will return to this topic in a moment as it is truly the source of our dillema. The second reason to replace the drum is that copy quality has turned to ****. The 1023 drum is good for........laugh with me as to how they determined this number, 26,900 copies. Not 26k. not 27k. Collective ROFL. This second criteria manifests itself in just crappy looking copies, and the end user calls for copy quality problems. The third reason is the abstract. For example a foreign object damages the drum. This includes the human hand.LOL.
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