Riso Error A16-525 ((hot)) Jun 2026

Open the machine's covers and inspect for any paper jams. Clear any jammed paper carefully to avoid damaging the machine.

: Open the front cover, turn the power switch OFF , wait 10 seconds, and turn it back ON . Sometimes a simple power cycle clears the sensor logic. Deeper Troubleshooting

- Some RISO models have a specific method to bypass the error using the yellow reset key. - Action: With the machine on and showing the error, open the front door, pull out the drum, and push it back in. Then, while holding down the yellow "Reset" or " Stop " key on the control panel, turn the main power off. Keep holding the button for a few seconds, then release it and turn the machine back on.

Look inside the machine's drum cavity for any loose scraps of master paper or paper dust. Step 2: Execute a Hard Reset riso error a16-525

Remove the master disposal box, pull the drum out, turn the machine off for 60 seconds, and turn it back on.

Take a clean, lint-free cloth lightly dampened with isopropyl alcohol (rubbing alcohol) or specialized rubber cleaner. Gently wipe down the black strip to remove accumulated ink glaze. Let it dry completely. Inspect the Light Absorber Strip for Damage

The first step in troubleshooting any electronic device or machine is to restart it. This simple action can sometimes resolve temporary glitches or errors. Open the machine's covers and inspect for any paper jams

Whether the error happens or only occasionally.

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)" .

: Wipe down the perimeter of the drum edges and clamp mechanisms monthly to prevent stray ink from blocking critical optical paths. Sometimes a simple power cycle clears the sensor logic

If you recently replaced the drum cloth/screen, an incorrect installation or a low-quality aftermarket screen can fail to trigger the optical sensor properly. 2. Step-by-Step Physical Troubleshooting

Gently wipe the small glass lens of the sensor using a dry cotton swab or a swab dipped in isopropyl alcohol. Step 3: Check for Drum Hardware Damage