The is a common "service call" code on Risograph digital duplicators, typically indicating that the machine is awaiting master removal from the print cylinder . While it primarily signals that a used master is still attached to the drum when the machine expects it to be gone, it often appears as a "false" error even when no master is present. Common Causes of Error A16-525
: If you recently replaced the drum's silkscreen with an after-market version, the white plastic mesh may be more reflective than the original metal mesh, confusing the sensor. How to Reset the Error Basic Reset : Press the yellow button on the panel. Power Cycle riso error a16-525
: Problems with the toner or ink system, such as low levels, incorrect installation, or leaks, can lead to the A16-525 error. The Riso duplicator relies on precise measurements of toner or ink to produce high-quality prints. Any discrepancies in this system can result in errors. The is a common "service call" code on
The drum may not be stopping at the correct "Position-A" angle, causing the sensor to look at reflective metal instead of the black absorber strip. Physical Obstructions: How to Reset the Error Basic Reset :