Darken the light absorber strip with a black marker or replace it How to Prevent Future A16-525 Errors
Sometimes the machine’s logic board retains the error state even after the physical blockage is removed: Turn off the Riso duplicator using the main power switch. Unplug the power cable from the wall outlet.
Use simulation 941 (Print-drum Position-A adjustment) to tweak the angle slightly, such as to +40 or -40, according to Facebook/Riso Community.
If you've tried all the steps above and the A16-525 error is still appearing, the problem likely requires professional repair. It could be a failed Master-on-Drum sensor that needs replacement, an issue with the main control board, or an internal mechanical problem. riso error a16-525
Do not wait for the "Box Full" message to appear. Make it a habit to empty the master disposal box at the start of every heavy printing shift.
Try holding the yellow Reset button while turning the machine on to force a clear of the current state.
: Ensure the environment around the Riso duplicator is clean and free from dust. Dust can accumulate inside the machine and cause operational issues. Darken the light absorber strip with a black
As noted by some users, a damaged screen (aftermarket or OEM) can cause this error Reddit/r/risograph. If the mesh is torn or lifting, it can snag the master. You may need to have the screen replaced or use a different drum to isolate the issue. 4. Adjust the Drum Angle (Advanced/Test Mode)
To minimize downtime and avoid repetitive master disposal jams, integrate these habits into your printing routine:
If there is no physical jam, a blind sensor is likely misreporting a jam. If you've tried all the steps above and
If you see a crumpled or partially fed master sheet, gently pull it out in the direction of the normal paper path to avoid tearing.
Before performing deep maintenance, try these standard clearing methods: Clear the Drum
To resolve the Riso error A16-525, follow these troubleshooting steps:
Let’s break down exactly what this error means, what causes it, and the step-by-step methods to clear it for good.