Riso Error A16-525 ((new)) <VERIFIED - VERSION>

: Open the front door and pull the print cylinder out of the machine.

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

: The Riso uses a light sensor to check for a master. It shines a light against a black velvet "light absorber" strip on the drum. If a white master is present, light reflects off it. riso error a16-525

1. Turn off the main power switch of the Riso machine. 2. Remove the current problematic drum from the housing. 3. Remove the master disposal box completely. 4. Hold down the yellow "Reset" button on the control panel. 5. Turn the power switch back ON while continuing to hold the Reset button. 6. Keep holding the button for 4-5 seconds until the machine initializes. 7. Reinsert the disposal box and slide the drum back into place.

If you have tried cleaning the velvet strip, applying matte tape, and wiping the internal sensor but the machine still refuses to clear the code, what of Riso (e.g., RZ220, EZ390, SF5130) are you using? Share public link : Open the front door and pull the

Before you begin, ensure the machine is turned off and unplugged to prevent any accidental electrical shocks or mechanical movements.

Many users fix "false" A16-525 errors by using a black Sharpie to darken the non-reflective velvet strip on the drum. It shines a light against a black velvet

下面是解决问题的步骤，请务必在确保安全的条件下，按顺序尝试：

If you have replaced an empty cartridge with a new one and the error persists, the machine may not have recognized the swap.

This is the most common fix for error 525.