Nikon Camera Coolpix L840 Reference Manual

Technical Notes
131
Observe the precautions described below in addition to the warnings in “For 
Your Safety” (Av–vii) when using or storing the device.
The Camera
Do Not Apply Strong Impact to the CameraThe product may malfunction if subjected to  strong shock or vibration. In addition, 
do not touch or apply force to the lens.
Keep DryThe device will be damaged if immersed in water or subjected to high humidity.
Avoid Sudden Changes in TemperatureSudden changes in temperature, such as wh en entering or...

Technical Notes
132
Batteries
Precautions for Use•Note that the batteries may become hot after use.
• Do not use batteries beyond their recommended expiration date.
• Do not turn the camera on and off repeatedly if discharged batteries are inserted in 
the camera.
Carrying Spare BatteriesWe recommend carrying spare batteries depending on where you are shooting. It 
may be difficult to purchase batteries in certain areas.
Charging BatteriesIf using optional rechargeable  batteries, charge the batteries...

Technical Notes
133
Recycling Used BatteriesReplace the batteries when they no longer hold a charge. Used batteries are a 
valuable resource. Please recycle used batteries in accordance with local regulations.
Memory Cards
Precautions for Use•Use only Secure Digital memory card s. See “Approved Memory Cards” (A150) for 
recommended memory cards.
• Be sure to follow the precautions descri bed in the documentation included with 
the memory card.
• Do not put labels or stickers on memory cards....

Technical Notes
134
Cleaning
Do not use alcohol, thinner, or other volatile chemicals.
Storage
Remove the batteries if the camera will not be used for an extended period. To 
prevent mold or mildew, take the camera out of storage at least once a month. 
Turn the camera on and release the shutter a few times before putting the 
camera away again. Do not store the camera in any of the following locations:
•Places that are poorly ventilated or  subject to humidity of over 60%
• Exposed to temperatures above...

Technical Notes
135
Refer to the table below if an error message is displayed.
Error Messages
DisplayCause/SolutionA
Battery temperature is 
elevated. The camera 
will turn off. The camera turns off automatically. Wait until 
the temperature has cooled before resuming 
use. –
The camera will turn off 
to prevent overheating.
Memory card is write 
protected. The write-protect switch is in the “lock” 
position.
Slide the write-protect switch to the “write” 
position.
–
This card cannot be 
used. An error...

Technical Notes
136
Cannot record movie.A time-out error occurred while saving the 
movie on the memory card.
Select a memory card with a faster write speed. 69, 150
Memory contains no 
images. There are no images in the internal memory 
or on the memory card.
•
Remove the memory card to play back 
images in the internal memory.
• To copy the images saved in the camera’s 
internal memory to the memory card, press 
the  d  button to select  Copy in the 
playback menu. 8
93
File contains no image 
data....

Technical Notes
137
* See the documentation provided with your printer for further guidance and 
information.
Lens error. Try again 
after turning the camera 
off and on.
Remove the lens cap.
If the error persists, contact your retailer or 
Nikon-authorized service representative.
6, 138
Communications error An error occurred while communicating with 
the printer.
Turn the camera off 
and reconnect the USB 
cable. 124
System error An error occurred in the camera’s internal 
circuitry.
Turn the camera...

Technical Notes
138
If the camera fails to function as expected, check the list of common problems 
below before consulting your retailer or Nikon-authorized service 
representative.
Power, Display, Settings Issues
Troubleshooting
ProblemCause/SolutionA
The camera is on 
but does not 
respond. Wait for recording to end.
If the problem persists, turn the camera off.
If the camera does not turn off, remove and reinsert 
the battery or batteries or, if you are using an AC 
adapter, disconnect and 
reconnect...

Technical Notes
139
Shooting Issues
O
 flashes on the 
screen. •
If the camera clock has not been set,  O flashes 
on the shooting screen, and images and movies 
saved before the clock is set are dated “00/00/
0000 00:00” and “01/01/2015  00:00” respectively. 
Set the correct time and date for  Time zone and 
date  in the setup menu.
• The camera clock is not as accurate as ordinary 
watches or clocks . Periodically compare the time 
of the camera clock with that of a more accurate 
timepiece, and reset...

Technical Notes
140
The camera 
cannot focus.•
The subject is too close.  Try shooting using scene 
auto selector mode,  Close-up scene mode, or 
macro mode.
• The subject is hard to focus on.
• Set  AF assist  in the setup menu to  Auto.
• Turn the camera off  and then on again. 20, 21, 
22, 25,
46
53
110
–
Images are 
blurred. •
Use the flash.
• Increase the ISO sensitivity value.
• Enable  Photo VR  when shooting still images. 
Enable  Movie VR  when recording movies. 
• Use a tripod to stabilize the...