Nikon CoolPix A300 Reference Manual page 164

Problem
Digital zoom
cannot be used.
Image mode not
available.
No sound when
the shutter is
released.
AF-assist
illuminator does
not light.
Images appear
smeared.
Colors are
unnatural.
Randomly spaced
bright pixels
("noise") appear in
image.
Randomly spaced
bright pixels
("noise") appear in
movies.
Images are too
dark
(underexposed).
Images are too
bright
(overexposed).
Technical Notes
Troubleshooting
Digital zoom is set to Off in the setup menu.
Digital zoom cannot be used with certain shooting
modes or when using certain settings in other functions.
A function that restricts Image mode is enabled.
Off is selected for Shutter sound in Sound settings in the
setup menu. No sound is produced with some shooting
modes and settings, even when On is selected.
Off is selected for AF assist in the setup menu. AF-assist
illuminator may not light depending on the position of the
focus area or the current scene mode, even when Auto is
selected.
The lens is dirty. Clean the lens.
White balance or hue is not adjusted properly.
The subject is dark and the shutter speed is too slow, or ISO
sensitivity is too high. Noise can be reduced by:
Using the flash
Specifying a lower ISO sensitivity setting
When recording movies in dim lighting, the image may
contain noise. This occurs when the ISO sensitivity
increases, and it does not indicate a malfunction.
The flash mode is set to W (off ).
The flash window is blocked.
The subject is beyond the range of the flash.
Adjust exposure compensation.
Increase ISO sensitivity.
The subject is backlit. Select Backlighting scene mode
or set the flash mode setting to X (fill flash).
Adjust exposure compensation.
Cause/Solution
149
A
123
59, 123
59
124
123
140
32, 96
46
99
–
46
20
155
51
99
33, 46
51