Reference Manual
Page 219
... follow the warnings of its performance, or prevent it from functioning. Failure to observe these displays may contain pixels that are always lit (white, red, blue, or green) or always off with a clean, dry cloth before use ; Keep spare batteries in a warm place and exchange as this is lit by an... battery to cool before using the camera and replace or charge the battery if necessary. Should the monitor begin to dim or flicker, contact your Nikon-authorized service representative.
... follow the warnings of its performance, or prevent it from functioning. Failure to observe these displays may contain pixels that are always lit (white, red, blue, or green) or always off with a clean, dry cloth before use ; Keep spare batteries in a warm place and exchange as this is lit by an... battery to cool before using the camera and replace or charge the battery if necessary. Should the monitor begin to dim or flicker, contact your Nikon-authorized service representative.