Nikon D300s - Manual (Page 392)

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Turn the product off before removing or disconnecting the power source : Do not
unplug the product or remove the battery while the product is on or while
images are being recorded or deleted. Forcibly cutting power in these
circumstances could result in loss of data or in damage to product memory
or internal circuitry. To prevent an accidental interruption of power, avoid
carrying the product from one location to another while the AC adapter is
connected.
Notes on the monitor : The monitor may contain a few pixels that are always lit
or that do not light. This is common to all TFT LCD monitors and does not
indicate a malfunction. Images recorded with the product are unaffected.
Images in the monitor may be difficult to see in a bright light.
Do not apply pressure to the monitor, as this could cause damage or
malfunction. Dust or lint on the monitor can be removed with a blower.
Stains can be removed by wiping lightly with a soft cloth or chamois
leather. Should the monitor break, care should be taken to avoid injury
from broken glass and to prevent liquid crystal from the monitor touching
the skin or entering the eyes and mouth.
Replace the monitor cover when transporting the camera or leaving it
unattended.