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 leaving a heated building 
on a cold day, can cause  condensation to form inside the device. To prevent 
condensation, place the device  in a carrying case or a plastic bag before exposing it 
to sudden changes in temperature.
Keep Away from Stro ng Magnetic FieldsDo not use or store this device in the vi cinity of equipment that generates strong 
electromagnetic radiation or magnetic fields.  Doing so could result in loss of data or 
camera malfunction.
Do Not Point the Lens at Strong Light Sources for Extended PeriodsAvoid pointing the lens at the sun or othe r strong light sources for extended periods 
when using or storing the  camera. Intense light may cause the image sensor to 
deteriorate or produce a white  blur effect in photographs.
Turn the Product Off Before Removing or Disconnecting the Power 
Source or Memory Card
Do not remove the batteries while the product is on, or while images are being saved 
or deleted. Forcibly cutting power in these  circumstances could result in loss of data 
or in damage to product memory or internal circuitry.
Notes About the Monitor• Monitors and electronic viewfinders are co nstructed with extremely high precision; 
at least 99.99% of pixels are effective, wi th no more than 0.01% being missing or 
defective. Hence while these displays may contain pixels that are always lit (white, 
red, blue, or green) or always  off (black), this is not a malfunction and has no effect 
on images recorded with the device.
• Images in the monitor may be diffic ult to see under bright lighting.
• Do not apply pressure to the monitor, as this could cause damage or malfunction. 
Should the monitor break, care should be taken to avoid injury caused by broken 
glass and to prevent the liquid crystal  from the display touching the skin or 
entering the eyes or mouth.
Caring for the Product 
						

							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 before taking pictures. 
Batteries are not fully charged at the time of purchase.
Be sure to read and follow the warnings noted in the operating instructions included 
with the battery charger.
Charging Rechargeable Batteries• Do not mix batteries with different amounts of charge remaining, or batteries of a 
different make or model.
• When using EN-MH2 batteries with this came ra, charge four batteries at a time using 
Battery Charger MH-73. Use only Battery Charger MH-73 to charge EN-MH2 batteries.
• When using Battery Charger MH-73, only charge EN-MH2 batteries.
• EN-MH1 rechargeable Ni-MH batteries cannot be used.
Notes About Rechargeable Ni-MH Batteries•If you repeatedly charge rechargeable Ni-MH batteries while they still have some 
charge remaining, the message  Battery exhausted. may be displayed prematurely 
when using the batteries. This is due to the “memory effect,” in which the amount of 
charge the batteries can hold decreases temporarily. Use the batteries until there is 
no charge remaining and they will return to their normal behavior.
• Rechargeable Ni-MH batteries discharge even when not being used. We 
recommend charging the batteries just before using them.
Using the Batteries When ColdOn cold days, the capacity of batteries te nds to decrease. If exhausted batteries are 
used at a low temperature, the camera may not turn on. Keep spare batteries in a 
warm place and exchange as necessary. Once warmed, cold batteries may recover 
some of their charge.
Battery TerminalsDirt on the battery terminals may prevent the camera from functioning. Should the 
battery terminals become dirty, wipe them off with a clean, dry cloth before use.
Remaining Battery ChargeIf you insert discharged batteries into th e camera, the camera may indicate that the 
batteries have adequate charge remaining.  This is a characteristic of batteries. 
						

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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.
Formatting•Do not format the memory card using a computer.
• The first time you insert a memory card that has been used in another device into 
this camera, be sure to format it with this camera. 
We recommend formatting new memory cards with this camera before using 
them with this camera.
• Note that formatting a memory card permanently deletes all images and 
other data on the memory card . Be sure to make copies of any images you wish 
to keep before formatting the memory card.
• If the message  Card is not formatted. Format card?  is displayed when the 
camera is turned on, the memory card must  be formatted. If there is data that you 
do not want to delete, select  No. Copy the necessary data to a computer, etc. If you 
want to format the memory card, select  Yes. The confirmation  dialog will be 
displayed. To start formatting, press the  k button.
• Do not perform the following during forma tting, while data is being written to or 
deleted from the memory card, or during  data transfer to a computer. Failure to 
observe this precaution could result in the  loss of data or in damage to the camera 
or memory card:
- Open the battery-chamber/memory card slot cover to remove/insert the 
batteries or memory card.
- Turn off the camera.
- Disconnect th e AC adapter. 
						

							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 50° C (122°F) or below –10°C (14°F)
• Next to equipment that produces strong electromagnetic fields, such as 
televisions or radios
Cleaning and Storage
Lens Avoid touching glass parts with your fingers. Remove dust or lint with 
a blower (typically a small device wi
th a rubber bulb attached to one 
end that is pumped to produce a st ream of air out the other end). To 
remove fingerprints or  other stains that cannot be removed with a 
blower, wipe the lens with a soft cloth, using a spiral motion that 
starts at the center of the lens an d working toward the edges. If this 
fails, clean the lens using a cloth  lightly dampened with commercial 
lens cleaner.
Monitor Remove dust or lint with a blower. To remove fingerprints and other 
stains, clean the monitor with a soft
, dry cloth, being careful not to 
apply pressure.
Body Use a blower to remove dust, dirt, or sand, then wipe gently with a 
soft, dry cloth.
After using the camera at the beach or other sandy or dusty 
environment, wipe off any sand, dust
, or salt with a dry cloth lightly 
dampened with fresh water and dry thoroughly.  Note that foreign 
matter inside the camera could cause damage not covered by 
the warranty. 
						

							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 occurred while accessing the 
memory card.
•
Use an approved memory card.
• Check that the terminals are clean.
• Confirm that the memory card is correctly 
inserted. 7, 150
This card cannot be 
read.
Card is not formatted. 
Format card? The memory card has not been formatted for 
use in the camera.
Formatting deletes all data saved on the 
memory card. If you need to keep copies of 
any images, make sure to select 
No and save 
the copies to a computer or other medium 
before formatting the memory card. Select 
Yes  and press the  kbutton to format the 
memory card. 133
Out of memory. Delete images or insert a new memory card. 7, 18
Image cannot be saved. An error occurred while saving the image.
Insert a new memory card or format the 
memory card or internal memory.
113
The camera has run out of file numbers.
Insert a new memory card or format the 
memory card or internal memory. 113
There is insufficient space to save the copy.
Delete images from the destination. 18
Image cannot be 
modified. Check that the images can be edited. 62, 142 
						

							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.
The file was not created or edited with this camera.The file cannot be viewed on this camera.
View the file using a computer or the device 
used to create or edit this file. –
All images are hidden.
There are no images availa ble for a slide show, etc.91
This image cannot be 
deleted. The image is protected.
Disable protection.
92
No access. The camera could not re
ceive the signal from 
the smart device. Establish the wireless 
connection again.
• Press the  Z (Wi-Fi) button.
• Touch an NFC-compatible smart device to 
the camera.
• Select  Connect to smart device  in the 
Wi-Fi options menu. 103, 
117
Could not connect. The camera failed to establish the connection 
while receiving the signals from the smart 
device. Set a different channel in 
Channel 
under  Options  in the Wi-Fi options menu, 
and establish the wireless connection again. 103, 
117
Wi-Fi connection 
terminated. The Wi-Fi connection is terminated in the 
following situations:
•
The signal strength is poor.
• The battery level is low.
•
A cable or memory card was inserted or removed.Use batteries with a sufficient amount of 
charge remaining, disconnect the TV, 
computer, or printer, and then establish the 
wireless connection again. 103, 
117
Raise the flash. The flash is lowered.
Raise the flash when shooting in 
Night 
portrait  or Backlighting  (when HDR is set 
to  k ) scene mode. 24, 26, 
43
DisplayCause/SolutionA 
						

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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 off, remove and reinsert the 
batteries, and turn the camera on. If the error 
persists, contact your retailer or Nikon-
authorized service representative. 138
Printer error: check 
printer status. After solving the problem, select Resume
 
and press the  kbutton to resume printing.* –
Printer error: check 
paper. Load the specified size of paper, select 
Resume
, and press the  k button to resume 
printing.* –
Printer error: paper jam. Remove the jammed paper, select 
Resume, 
and press the  kbutton to resume printing.* –
Printer error: out of 
paper. Load the specified size of paper, select 
Resume
, and press the  k button to resume 
printing.* –
Printer error: check ink. There is a problem with the printer’s ink.
Check the ink, select 
Resume, and press the 
k  button to resume printing.* –
Printer error: out of ink. Replace the ink cartridge, select 
Resume, and 
press the  kbutton to resume printing.* –
Printer error: file corrupt. There is a problem with the image file to be 
printed.
Select 
Cancel  and press the  k button to 
cancel printing. –
DisplayCause/SolutionA 
						

							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 the AC adapter.
Note that although any data currently being 
recorded will be lost, data  that have already been 
recorded will not be affected by removing or 
disconnecting the power source. –
The camera 
cannot be turned 
on. The batteries are exhausted.
7, 132
The camera turns 
off without 
warning. •
The camera automatically turns off to save power 
(auto off function).
• The camera and batteries may not work properly 
at low temperatures.
• The inside of the camera has become hot. Leave 
the camera off until the inside of the camera has 
cooled, and then try turning it on again. 13
132
–
The monitor is 
blank. •
The camera is off.
• The camera automatically turns off to save power 
(auto off function).
• The flash lamp flashes while the flash is charging. 
Wait until charging is complete.
• The camera is connected  to a TV or computer.
• The camera and smart device are connected 
using a Wi-Fi connection and the camera is being 
operated by remote control. 9
13
–
–
–
The camera 
becomes hot. The camera may become 
hot when used for an 
extended period of time to shoot movies or when 
used in a hot environment; this is not a malfunction. –
The monitor is 
hard to read. •
Adjust the monitor brightness.
• The monitor is dirty. Clean the monitor. 107
134 
						

							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 as required. 3, 105
Date and time of 
recording are not 
correct.
No indicators 
displayed in 
monitor. Hide info
 is selected for  Photo info in Monitor 
settings  in the setup menu. 107
Date stamp  not 
available. Time zone and date
 has not been set in the setup 
menu. 105
Date not stamped 
on images even 
when  Date 
stamp  is enabled. •
The current shooting mode does not support 
Date stamp .
• The date cannot be stamped on movies. 109
Screen for setting 
time zone and 
date is displayed 
when the camera 
is turned on. The clock battery is exhausted; all settings were 
restored to their default values.
9, 11
The camera 
settings reset.
The camera 
makes sound. When 
Autofocus mode  is set to Full-time AF  or 
while in some shooting modes, the camera may 
produce an audible focusing sound. 20, 100
ProblemCause/SolutionA
Cannot switch to 
shooting mode. Disconnect the HDMI 
cable or USB cable. 120
Cannot take 
pictures or record 
movies. •
When the camera is in playback mode, press the Abutton, shutter-release button, or b (e) button.•
When menus are displayed, press the  d button.
•The flash is charging while the flash lamp is flashing.• The batteries are exhausted. 1, 17
75
44
7, 132
ProblemCause/SolutionA 
						

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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 camera (using the 
self-timer at the same time is more effective). 43
83
101, 
110
45
Bright specks 
appear in images 
captured with 
flash. The flash is reflecting off particles in the air. Lower 
the flash.
11, 43
Flash does not 
fire. •
The flash is lowered.
• A scene mode that restricts the flash is selected.
• A function that restricts the flash is enabled. 11, 43
48
55
Digital zoom 
cannot be used. •
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. 111
56, 111
Image mode  not 
available. A function that restricts Image mode is enabled. 55
No sound when 
the shutter is 
released. •
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.
• Do not block the speaker. 111
1
AF-assist 
illuminator does 
n o

t light. Off
 is selected for  AF assist in the setup menu. The 
AF-assist illuminator may not light depending on 
the position of the focus  area or the shooting mode, 
even when  Auto is selected. 110
ProblemCause/SolutionA