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Cleaning the displays If the display is dirty, the image may be difficult to see. Clean it gently using a soft dry cloth. Cleaning the cameras If the camera lenses are dirty or covered with foreign matter such as water droplets, snow, mud, etc., the displayed image may not be clear.
If the cameras are covered with frost or snow, operate the camera heaters. If the cameras are covered in mud, dirt or other foreign matter, rinse the cameras with a large quantity of water and then wipe the camera lenses clean with a soft cloth dampened with water.