: Some users find success by placing a small piece of matte black gaffer tape over the strip to improve light absorption. 3. Reset and Service Mode
For advanced users, specific service parameters can sometimes resolve persistent errors related to drum positioning or sensor sensitivity: riso error a16-525
When this error appears, the machine immediately halts all printing operations. Ignoring the cause or failing to reset the system properly can lead to damaged print heads, creased paper, or repeated mechanical failures. : Some users find success by placing a