Screen not readable.
Adjust contrast.
Screen backlight set too low.
Increase backlight adjustment.
Incorrect speed displayed.
Enter correct radar calibration value or recalibrate on 122 m (400 ft.) course.
Incorrect units of measure set.
Set correct units.
Speed reading erratic.
Radar mount loose or vibrates.
No radar speed reading.
Calibrate radar.
Windy or dusty conditions.
Change to a different speed source.
No radar calibration value.
Calibrate radar per tractor operator’s manual.
OUO6074,000106C-19-20071011