Nikon D3100 User Manual
Page 209
193
n
This card is not formatted.
Format the card.
T
(blinks)
Format card or turn camera off and insert new
memory card.
21
Card is full
j/A/s
(blinks)
• Reduce quality or size.
64
• Delete photographs.
31,
109
• Insert new memory card.
20
—
●
(blinks)
Camera can not focus using autofocus. Change
composition or focus manually.
26,
56, 62
Subject is too bright.
q
• Use a lower ISO sensitivity.
71
• Use commercial ND filter.
—
• In mode:
S
Increase shutter speed
75
A
Choose a smaller aperture (larger f-number)
76
Subject is too dark.
r
• Use a higher ISO sensitivity.
71
• Use flash.
67
• In mode:
S
Lower shutter speed
75
A
Choose a larger aperture (smaller f-number)
76
No Bulb in S mode.
A
(blinks)
Change shutter speed or select manual exposure
mode.
75, 77
—
N
(blinks)
Flash has fired at full power. Check photo in
monitor; if underexposed, adjust settings and try
again.
—
Flash is in TTL mode. Choose
another setting or use a CPU
lens.
Change flash mode setting on optional flash unit
or use CPU lens.
167
—
N/s
(blinks)
• Use the flash.
67
• Change distance to subject, aperture, flash
range, or ISO sensitivity.
70,
71, 76
• Lens focal length is less than 18 mm: use a
longer focal length.
—
• 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.
—
Flash error
s
(blinks)
Error occurred updating firmware for optional
flash unit. Contact Nikon-authorized service
representative.
—
Indicator
Solution
0
Monitor
Viewfinder