If your model uses Test Modes, entering (Clear All Errors) may be necessary, though this is usually reserved for technicians.
Locate the optical sensors near the master disposal entrance and compression plate.
: Your RISO machine's user manual might have a section on error codes. Check if "A16-525" is listed and what recommended actions are suggested.
A technician will have the specialized tools and knowledge to diagnose a failing sensor, a misaligned drum, or a faulty PCB, and will be able to get your machine back to peak performance safely.
Remove the drum that is causing the error. riso error a16-525
: If directed by support or if you're not comfortable performing repairs or diagnostics yourself, arrange for a service technician. RISO machines are complex, and improper handling could lead to further damage.
The is a frequent issue encountered by users of Risograph digital duplicators. Officially defined as "Waiting for the master to be removed from the print cylinder" , this error occurs when the machine attempts to create a new master but detects that the old master sheet is still attached to the drum.
Follow these steps sequentially to resolve the A16-525 error and restore your duplicator to working order. Step 1: Empty and Reset the Master Disposal Box
: Ensure the environment around the Riso duplicator is clean and free from dust. Dust can accumulate inside the machine and cause operational issues. If your model uses Test Modes, entering (Clear
If the error occurs only on a drum that recently received a new screen mesh, the sensor is likely picking up reflections from the screen itself.
If there is an actual master stencil jammed inside the machine, follow these sequential steps to safely clear it:
Before opening any panels, try a simple power cycle:
Locate the rubber compression rollers inside the disposal area. Check if "A16-525" is listed and what recommended
If the master roll was installed improperly or sustained physical damage, it may tear or crumple abnormally during the disposal phase.
Sometimes the sensor "remembers" the error even after the master is gone.
Weeks later, a regular customer named Luis stopped by. He held a chapbook Marta had printed for his niece. Inside, on the last page, tucked between pages as if secreted there, was the café receipt. Luis stared at it, stunned. “That’s my grandmother’s handwriting,” he said. It turned out the receipt had been from the cafe where his grandmother used to stitch quilts and gossip. She’d passed away years ago; the receipt was a tiny thread back to a life that had seemed ephemeral.