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Power source
The input power source for this product is 120 V AC 60 Hz
(WJ-NV200K, WJ-NV200VK), 220 V – 240 V AC 50 Hz/
60 Hz (WJ-NV200K/G). Do not connect to the outlet that
provides the power to equipment that requires a measurable
amount of power (such as a copy machine, air conditioner,
etc.). Avoid placing this product in locations where is subject
to water.
* The provided power cord(s) is (are) dedicated to the use
with this product.
Ambient operating temperature
Use this product at temperatures b5 °C to +45 °C
{41 °F to 113 °F}. Failure to do so may damage the internal
parts or cause malfunction.
* Performance and lifetime of hard disk drives are easily
affected by heat (used at high temperature). It is recom-
mended to use this product at a temperature of approx.
+25 °C {77 °F}.
To cut the power supply
This product has no power switch. To cut the power supply,
unplug the power plug of the product from the AC outlet. If it
is hard to unplug the power cord due to the installation con-
ditions, connect the power cord of the product to the AC
outlet via the circuit breaker of a distribution board or to the
AC inlet socket of a power supply control unit.
Built-in backup battery
• Before the first use, charge the built-in backup battery
(lithium battery) by turning on the power for 48 hours or
more. If it is not charged enough, in a case where the
power goes down, the operative condition may be differ-
ent to that before the electric power failure. For example,
the internal clock may keep bad time or logs may be
lost.
• The built-in battery life is around 5 years as an indication
of replacement. (The built-in battery life may become
shorter depending on the use condition.) Replace the
built-in battery after 5 years of use. ("5 years of use" is
just an indication of replacement. We are not providing
any guarantee of the built-in battery lifetime.) When the
built-in battery life runs out, some settings such as the
date & time setting will not be saved once the power is
turned off.
• Ask your dealer when replacement of the battery is
required.
Hard disk drive (HDD)
• Hard disk drives are vulnerable to vibration. Handle them
with care. It is possible to damage them if they are
moved while their motors are still running.
• Do not move or install this product just after turning the
power on or off (for around 30 seconds.) The hard disk
drives are running.
• The lifetime of hard disk drives is limited by use. Write
errors may occur frequently after around 20 000 hours of
operation, and the head and motor deterioration may
occur after around 30 000 hours of operation. They will
reach the end of their lifetime after 30 000 hours of oper-
ation if they have been used at the recommended ambi-
ent temperature (approx. +25 °C {77 °F}).
• To prevent data loss from disk crashes, it is recommend-
ed to keep the ambient operating temperature at
approx. +25 °C {77 °F} and to replace them after around
18 000 hours of operation.
• When hard disk drive trouble occurs, replace it immedi-
ately. Contact your dealer about servicing.
About SDHC/SD memory card
• When using an unformatted SDHC/SD memory card,
format it with this product. Recorded data on the SDHC/
SD memory card will be deleted when formatted. If an
unformatted SDHC/SD memory card or an SDHC/SD
memory card formatted with other devices is used, the
product may not work properly or performance deterio-
ration may be caused. Refer to the Operating
Instructions (PDF) for how to format a SDHC/SD memo-
ry card.
• When some SDHC/SD memory cards are used with the
product, the product may not work properly or perfor-
mance deterioration may be caused. Use the SDHC/SD
memory cards recommended in page 97.
• Refer to page 19 for how to insert/remove a SDHC/SD
memory card.
Prevent condensation from forming
If this happens, it can cause malfunction.
Leave it switched off for around 2 hours in the following
cases.
• When this product is placed in an extremely humid
place.
• When this product is placed in a room where a heater
has just been turned on.
• When this product is moved from an air-conditioned
room to a humid and high-temperature room.
About the monitor
When displaying the same image on the monitor for a long
time, the monitor may be damaged.
When this product is not supposed to be used for a
certain period
Turn on the power (around once a week), and perform
recording/playback to prevent interferences with functions.
Precautions
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