Nikon D300s User Manual

373

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If the camera fails to function as expected, check the list of 
common problems below before consulting your retailer or Nikon 
representative.

❚❚Display

: Adjust viewfinder focus or use optional diopter 

adjustment lenses (0 36, 353).
Viewfinder is dark

: Insert a fully-charged battery (0 22, 37).

: Choose longer delays for Custom Setting c2 

(Auto meter-off delay) or c4 (Monitor off delay) (0 273, 274).
Unusual characters displayed in control panel

: See “A Note on Electronically-

Controlled Cameras,” below.
Displays in control panel or viewfinder are unresponsive and dim

: The response times 

and brightness of these displays varies with temperature.
Fine lines are visible around active focus point or display turns red when focus point is 
highlighted

: These phenomena are normal for this type of viewfinder and do 

not indicate a malfunction.

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In extremely rare instances, unusual characters may appear in the 
control panel and the camera may stop functioning. In most cases, this 
phenomenon is caused by a strong external static charge. Turn the 
camera off, remove and replace the battery, and turn the camera on 
again, or, if you are using an AC adapter (available separately), 
disconnect and reconnect the adapter and turn the camera on again. In 
the event of continued malfunction, contact your retailer or Nikon-
authorized service representative. Note that disconnecting the power 
source as described above may result in loss of any data not recorded to 
the memory card at the time the problem occurred. Data already 
recorded to the card will not be affected.