Nikon D5100 Reference Manual page 243

Indicator
Monitor
Not available if Eye-Fi card is
locked.
This card is not formatted.
Format the card.
Card is full
—
Subject is too bright
Subject is too dark
No Bulb in S mode
No Bulb in HDR mode
Interval timer shooting
—
Flash is in TTL mode. Choose
another setting or use a CPU
lens.
—
Viewfinder
(/k
Eye-Fi card is locked (write protected). Slide card
(blinks) write-protect switch to "write" position.
T
Format card or turn camera off and insert new
(blinks) memory card.
• Reduce quality or size.
j/A/s
• Delete photographs.
(blinks)
• Insert new memory card.
Camera can not focus using autofocus. Change
(blinks) composition or focus manually.
• Use a lower ISO sensitivity.
• Use commercial ND filter.
• In mode:
S Increase shutter speed
A Choose a smaller aperture (larger f-number)
s
% Choose another shooting mode
(blinks)
• Use a higher ISO sensitivity.
• Use flash.
• In mode:
S Lower shutter speed
A Choose a larger aperture (smaller f-number)
A
Change shutter speed or select manual exposure
(blinks) mode.
A
Change shutter speed.
(blinks)
Menus and playback are not available while
— interval timer photography is in progress. Turn
camera off.
Flash has fired at full power. Check photo in
monitor; if underexposed, adjust settings and try
N again.
(blinks)
Change flash mode setting on optional flash unit
or use CPU lens.
• Use the flash.
• Change distance to subject, aperture, flash
range, or ISO sensitivity.
• Lens focal length is less than 18 mm: use a
N/s
longer focal length.
(blinks) • Optional SB-400 flash unit attached: flash is in
bounce position or focus distance is very short.
Continue shooting; if necessary, increase focus
distance to prevent shadows from appearing in
photograph.
Solution
0
21
22
47, 49
133
21
27,
40, 45
54
—
63
64
116
54
50
63
64
63, 65
65, 76
57
53
197,
199
50
53,
54, 64
—
—
n
225