The error triggers when internal sensors communicate to the main circuit board that a master stencil is stuck on or around the printing drum. The underlying causes fall into three distinct categories: 1. Physical Master Jams
While the machine may simply be waiting for a physical master to be removed, this error frequently occurs as a "false" reading even when the drum appears empty.
When this error appears, the machine immediately halts all printing operations. Ignoring the cause or failing to reset the system properly can lead to damaged print heads, creased paper, or repeated mechanical failures. riso error a16-525
Use a lint-free cloth lightly dampened with to gently wipe away ink smudges, oils, or dust from the sensor window. Allow it to dry completely before re-inserting the drum. Step 4: The "Sharpie Fix" for Aftermarket Screens
When this occurs, the duplicator will lock up and refuse to burn or load a new master roll until the error is resolved. Below is a comprehensive guide to understanding, diagnosing, and repairing both physical and false A16-525 errors. Anatomy of the Master Disposal Process The error triggers when internal sensors communicate to
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.
Remember: Do not ignore the error by constantly power-cycling the machine. Address the root cause. A clean sensor is a happy sensor, and a happy sensor means a profitable print shop. When this error appears, the machine immediately halts
If the sensor is fine but the machine still shows the error, the drum position might be slightly off, preventing the sensor from reading correctly.
If you operate a RISO digital duplicator (such as the popular GR, RZ, EZ, MZ, or SF series), encountering an error code can bring your high-speed printing production to a grinding halt. Among the most frustrating of these issues is , which officially translates to: "Waiting for the master to be removed from the print cylinder (drum)" .