Riso: Error A16-525

To fix the A16-525 error, it helps to understand what the machine expects to happen during a master change:

The error might occur specifically with one colored drum but not others. Causes of Riso Error A16-525 Several factors can lead to this master-removal failure:

Risograph machines have a persistent memory. Sometimes, even after you clean the sensor and fix the drum, the error remains locked on the LCD interface. Use this sequence to force a hard clear: riso error a16-525

Slide a into the machine (if available). Remove and re-insert the master disposal box. Turn the main power switch OFF .

The first step in troubleshooting any electronic device or machine is to restart it. This simple action can sometimes resolve temporary glitches or errors. To fix the A16-525 error, it helps to

Mastering the Riso Error A16-525: Causes, Fixes, and Prevention

: The master disposal hooks fail to lift the used stencil off the drum and transfer it to the disposal box. Use this sequence to force a hard clear:

Aftermarket or generic replacement screens may have a "light absorber strip" (the black velvet strip near the clamp) that is too thin or reflective, causing the sensor's light to bounce back improperly. Troubleshooting Steps

Less common, but more severe. If the PF (Paper Feed) motor is failing to maintain constant speed, or if the wiring harness to the register sensor has a micro-fracture, intermittent timing errors will occur.