The error message "Failed to find L5 target" appears on the scanner status window.
 Check if the calibration panel is mounted on the scanner with two half-block jigs.
 Check the calibration panel for any foreign object or dirt on the surface. If so, gently wipe the surface with a microfiber cloth.
 Check if the serial number of the calibration panel is the same with the PNL file in the calibration wizard.
 Check if the camera lenses or the mirror is contaminated. Use a microfiber cloth to wipe the surface of the camera lenses and the mirror.