Nikon D90 user manual Troubleshooting, Display, 250, Problem Solution

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

Problem	Solution	Page
Viewfinder is out of focus.	Adjust viewfinder focus or use optional eyepiece	32
	correction lenses.
Viewfinder is dark.	Insert a fully-charged battery.	34
Displays turn off without warning.	Choose longer delays for Custom Setting c2 (Auto	179,
	meter-off delay) or c4 (Monitor off delay).	180
Unusual characters displayed in	See “A Note on Electronically-Controlled	250
control panel.	Cameras,” below.
Displays in control panel or	The response times and brightness of these
viewfinder are unresponsive and		—
	displays varies with temperature.
dim.
Fine lines are visible around active	These phenomena are normal for this type of	—
focus point or display turns red	viewfinder and do not indicate a malfunction.
when focus point is highlighted.

AA 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, taking care to avoid burns, 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

n 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.

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