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If the problem persists, check if there are any firmware updates available for your Riso duplicator. Additionally, have a professional inspect the control board for faults.
If you are using a refilled cartridge:
If cleaning and adjustment fail, physically inspect the (located on the main drive shaft) and the PF Motor encoder . riso error a16-525
If the error persists even when there is no master on the drum, try these common community fixes: Darken the "Light Absorber Strip" If the problem persists, check if there are
Do not simply turn the machine off and on. That will temporarily clear the code, but it will return mid-run, wasting 50 sheets of paper. Follow this protocol: If the error persists even when there is
If you have replaced an empty cartridge with a new one and the error persists, the machine may not have recognized the swap.
: The most common cause is a full master disposal box. Pull out the box, discard the used masters, and ensure it is pushed back in completely until it clicks.
