Regularly vacuum or blow out the master making and disposal cavities to keep dust from blinding the optical sensors.
Turn off the main power switch. Hold down the yellow Reset button on the control panel while flipping the power switch back on. Keep holding the reset button for 5 seconds to force the machine to reinitialize its mechanics.
Inspect the white plastic wheels or gears on the side of the drum clamp; if one is missing or broken, the clamp may not be seating correctly for the sensor to read it. riso error a16-525
Using test mode simulation 941 or 959 to adjust the "Position-A" angle so the sensor aligns better with the non-reflective strip.
If an actual master sheet is wrapped around your print cylinder, follow these safe extraction steps: Regularly vacuum or blow out the master making
If you'd like to try the , could you tell me: Your specific machine model (e.g., EZ220, RZ200, CV3230)? If you recently replaced the screen or master roll?
Avoid using sharp metal tools (like scissors or screwdrivers) to pluck out the master, as you can easily gouge the rubber rollers. Step 3: Clean the Disposal Rollers and Sensors Keep holding the reset button for 5 seconds
RISO and RISO-licensed machines like the RZ, RP, RV, and ES series use a code system. The part of the error is the "type," indicating a "Jam error" where the machine is "Awaiting for the master to be removed from the drum" .