: Use a soft cloth to clean any visible optical sensors. Dust and water spray can frequently interfere with their ability to read lens positions correctly.
: This indicates an issue with the assembly that slides the edging wheels. It often points to a mechanical obstruction or a failing stepper motor. essilor kappa error codes
: Powering the unit down and back up can clear temporary software glitches or communication failures between the machine and diagnostic systems like Findeen. : Use a soft cloth to clean any visible optical sensors