Riso — Error A16-525 Portable

: Wipe the sensor (located above the drum area) to remove any ink or dust that might be causing a false reading. Troubleshooting "False" Errors

The Riso error code indicates the machine is Waiting for the master to be removed from the print cylinder (drum) riso error a16-525

If you are a print shop operator or a maintenance technician for a RISO high-speed inkjet printer (specifically the ComColor series like GD, GH, or GL models), seeing the error code flash on your control panel is a moment that demands immediate, focused attention. : Wipe the sensor (located above the drum

: Ensure the environment around the Riso duplicator is clean and free from dust. Dust can accumulate inside the machine and cause operational issues. Dust can accumulate inside the machine and cause

This is the most common cause. The PF Register Sensor is an optical device. Over time, paper dust, ink mist, and static-charged debris stick to the sensor lens. If the sensor is dirty, it cannot "see" the paper edge correctly.

or black washi tape over the strip to eliminate reflections. Replace the Strip : If it's too fuzzy or worn, the official part is the "Light Absorber Strip" (Part #023-17004). 3. Mechanical & Sensor Adjustments

. It occurs when the machine's sensors detect a master remains on the drum after a disposal cycle, even if the drum appears empty. Common Causes Sensor Detection Failure: