Riso Error — A16-525 ((link))

The A16-525 error on a Riso duplicator indicates a "Master Disposal Jam" or a failure in the master disposal compression mechanism. Essentially, the machine tried to discard a used master into the disposal box, but it got stuck or the compression plate failed to move correctly. Quick Fixes to Try First

, and turn it back on while continuing to hold the button for a few seconds. 2. Solving the "False" Error (The Sharpie/Tape Trick) If the error persists even when there is riso error a16-525

Sensor Misidentification: The sensor shined against the drum detects a reflection from a master that it believes is still there. The A16-525 error on a Riso duplicator indicates

If the error persists even when there is no master on the drum, try these common community fixes: Darken the "Light Absorber Strip" It often occurs when the master sensor incorrectly

The Riso error A16-525 typically means the machine is "waiting for the master to be removed from the print drum". It often occurs when the master sensor incorrectly thinks a master is still attached, even if the drum looks empty. Direct Troubleshooting Steps

Step-by-Step Diagnosis and Fix (Do Not Reset First)

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: