Can anyone advice me on key506 fault code,have recalibrated and cleaned lens on lidar.
Hello @arie_huts and Welcome to the Creality Forum 
I don’t calibrate every print. Maybe if I switch build plates or move the machine to adjust something… Not very often.
I have had this on mine and turned it off in the settings. It hasn’t popped up lately after I turned it back on. Not sure what causes it…