Nikon D300 - Manual (Page 409)

383
n
Troubleshooting
If the camera fails to function as expected, check the list of
common problems below before consulting your retailer or Nikon
representative. Refer to the page numbers in the right-most
column for more information.
❚❚Display
A
A Note on Electronically-Controlled Cameras
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.
Problem Solution Page
Viewfinder is out of focus.
Adjust viewfinder focus or use
optional diopter adjustment lenses.
43
Viewfinder is dark. Insert a fully-charged battery. 44
Displays turn off without
warning.
Choose longer delays for Custom
Setting c2 ([Auto meter-off delay])
or c4 ([Monitor off delay]).
279, 280
Unusual characters
displayed in control panel. See “A Note on Electronically-
Controlled Cameras,” below.
383
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.
—