Troubleshooting the A16-525 "Master Removal" Error Body: If you're getting A16-525 on your RZ/EZ series, it's often a sensor issue rather than a physical jam. Based on common fixes from PrintCopy.info and the Riso community:
Since you asked to "come up with a post," here are three options tailored for different platforms:
- The master clamp is the metal bar that holds the master in place. If it's bent, it won't release the master. - Action: With the drum out, visually inspect the master clamp. Is it visibly bent or damaged? Try to move it manually; it should spring back and forth with some tension. If it feels loose or is bent, the drum will likely need professional repair. riso error a16-525
Reinsert the master disposal box, insert a different color drum if you have one to verify the code drops, and then reinsert your primary drum.
Pull out the master disposal box, discard its contents, and slide it back in securely. Troubleshooting the A16-525 "Master Removal" Error Body: If
The is a common technical issue encountered by users of Risograph digital duplicators, specifically within the Riso RZ Series , EZ Series , and RV Series.
Pull the green lever and slide the print cylinder entirely out of the machine. - Action: With the drum out, visually inspect
It is highly common for a drum to trigger an A16-525 error when it is completely bare. If you insert a drum and immediately get flagged for a stuck master, use these steps to trace the issue: Step 1: Inspect and Rejuvenate the Black Velvet Strip
If the problem is related to an aftermarket screen, the drum sensor may need calibration. This involves using the printer’s (Simulation Mode).