Nikon D300 Complete Manual page 481

Some error messages appear only on the top and color LCD:
Message Where Seen
Top LCD
-E-
color LCD
No memory
card.
CKA
Top LCD
(blinks)
color LCD
This memory
card cannot
be used.
Card may be
damaged.
Insert
another card.
FOR
Top LCD
(blinks)
color LCD
This card is
not
formatted.
Format the
card.
color LCD
Folder
contains no
images.
Thom Hogan's Complete Guide to the Nikon D300
What it Means
The camera can't detect a
CompactFlash card in the slot.
Solution: Check to make sure
that you've inserted a card and
that it is properly engaged in
the slot.
The camera is having trouble
accessing the CompactFlash
card. This may indicate that
the card is not formatted
correctly or already contains
the maximum number of files.
Solution: Use a different card,
or, if the card you inserted
wasn't formatted properly, try
to format it again.
The CompactFlash card you
inserted hasn't been formatted
for use in the camera.
Solution: Format the card.
Note: the FOR message also
appears during formatting
operation.
You're attempting to play back
images from a folder on a card
that contains none. Solution:
It's possible that images are on
the card, but in a different
folder, so check to make sure
that you've selected the proper
folder using Playback folder
on the PLAYBACK menu.
Otherwise, take a picture!
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