Riso Error A16-525 Today

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.

Photo-sensors track the movement of the master. If paper dust, ink mist, or a stray piece of master material blocks these sensors, the machine assumes a jam exists.

: If the drum's "Position-A" is slightly off, the sensor may be looking at the shiny metal of the drum instead of the black absorber strip. 3. Troubleshooting Steps

Visually inspect the surface. If a master stencil is wrapped around it, manually open the clamp plate and gently peel the master away. riso error a16-525

: Locate the silver clamp plate holding the leading edge of the master. Manually lift it or pivot the gears to unlock it.

Hi riso community ! I've got a A16-525 error on one of my drums but the

The master disposal drive motor makes a grinding or unusual clicking sound. If you've tried all the steps above and

RISO error A16-525 typically indicates Waiting for the master to be removed from the print drum

Wipe the black strip with a dry, lint-free cloth to remove paper dust.

Technically, the error was nothing more than a sensor misread and a crooked feed. It had a fix in three steps: reseat the paper, check the sensor, run the cycle. But Marta liked the story better — a machine that saved the tiny, accidental past and returned it, stitched into paper, to someone who needed it. If paper dust, ink mist, or a stray

This specific error is not a simple paper jam or an out-of-ink warning. It is a hardware-level stoppage related to the machine’s critical paper transport and registration system. In plain terms, indicates a Timing Mismatch: Paper Position Sensor (PF Register Sensor) abnormality.

Are you using an or did this error start after a specific master jam ? Riso Error Codes and Solutions Guide | PDF - Scribd

If the problem only follows one specific drum, the issue is strictly on that drum's black strip or clamp. If the error happens on every single drum you insert, the optical sensor inside the machine frame is dirty or failing.

The Riso system relies on a precise sequence of rollers, sensors, and structural alignment to peel a used master off the drum and compress it into the disposal box. The A16-525 code triggers due to one of four main issues: