Panasonic WJ-ND400 User Manual
9
z Refer all work related to the installation of this product to
qualified service personnel or system installers.
z Do not operate the unit beyond their its specified
temperature, humidity, or power source ratings.
Use the unit at temperatures between +5 ºC - +45 ºC {41 ºF - 113
ºF} and where the humidity is between 5 % - 90 %.
ºF} and where the humidity is between 5 % - 90 %.
The input power source for NTSC model is 120 V AC 60 Hz, for
PAL model is 220 V - 240 V AC 50 Hz.
PAL model is 220 V - 240 V AC 50 Hz.
Performance and lifetime of hard disk drives are easily affected
by heat (used at high temperature) characteristically. It is
recommended to use this unit at temperatures between +20 ºC -
+30 ºC {68 ºF - 86 ºF}.
by heat (used at high temperature) characteristically. It is
recommended to use this unit at temperatures between +20 ºC -
+30 ºC {68 ºF - 86 ºF}.
z POWER switch
The POWER switch is located on the rear of the unit. Even
though the POWER switch is set to "OFF", the power supply will
not be cut. To cut the power supply, unplug the power plug of the
unit from the AC outlet. When using the power supply control
unit, turn off the power of the power supply control unit.
though the POWER switch is set to "OFF", the power supply will
not be cut. To cut the power supply, unplug the power plug of the
unit from the AC outlet. When using the power supply control
unit, turn off the power of the power supply control unit.
z 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.
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 internal clock may keep bad time or the operative
condition may be different to that before the electric power
failure.
down, the internal clock may keep bad time or the operative
condition may be different to that before the electric power
failure.
The built-in battery life is approximately 5 years as an indication
of replacement. (This is just an indication of replacement. We are
not providing any guarantee of the built-in battery lifetime.
Replacement cost of the built-in battery is not covered by the
warranty even if it needs to be done within the warranty period.)
Ask the dealer where you purchased the unit when replacement
of the battery is required.
of replacement. (This is just an indication of replacement. We are
not providing any guarantee of the built-in battery lifetime.
Replacement cost of the built-in battery is not covered by the
warranty even if it needs to be done within the warranty period.)
Ask the dealer where you purchased the unit when replacement
of the battery is required.
z Hard disk drives
Hard disk drives are vulnerable to vibration. Handle them with
care.
care.
It is possible to damage them if they are moved while their
motors are still running. Do not move them just after turning their
power on or off (for around 30 seconds).
motors are still running. Do not move them just after turning their
power on or off (for around 30 seconds).
⋅ A lifetime of hard disk drives is limited by use.
It is recommended to replace them after around 18 000 hours
of operation to prevent data loss from disk failures.
Write error may occur frequently after around 20 000 hours of
operation and the head and motor deterioration may occur
and will reach their lifetime after 30 000 hours of operation
when they have been used at the recommended ambient
temperature (approx. +25 ºC {77 ºF}).
of operation to prevent data loss from disk failures.
Write error may occur frequently after around 20 000 hours of
operation and the head and motor deterioration may occur
and will reach their lifetime after 30 000 hours of operation
when they have been used at the recommended ambient
temperature (approx. +25 ºC {77 ºF}).
When hard disk drive trouble occurs, replace it immediately.
Consult your dealer for servicing.
Consult your dealer for servicing.
⋅ Hard disk drives are precise devices. Do not leave them
where the temperature is high and humid.
⋅ Do not touch the connector of the removable hard disk by
hand directly to protect the hard disk drive from static
electricity.
electricity.
⋅ Take notice of the following for the removed hard disks.
⋅ Do not leave them where the temperature is high and
humid. It may cause condensation.
⋅ Place them where the temperature is between 0 ºC {32 ºF}
and 30 ºC {86 ºF} and humidity is between 20 - 40 % when
they are not used for a long time (six months or more).
Consult your dealer for further information.
they are not used for a long time (six months or more).
Consult your dealer for further information.
⋅ Operate them for around an hour at least once every six
months when they are not used for a long time.
⋅ When placing them stacked, do not stack more than four
disks.
z Heat dissipation
Refer to the following to prevent fire and malfunction of the unit.
⋅ Do not block the ventilation openings in the cover to prevent
the unit from overheating. Maintain the unit periodically to
prevent dust from blocking openings.
prevent dust from blocking openings.
⋅ Clear a space of more than 5 cm {1.97 "} from both sides, the
top, and the rear of the unit.
⋅ A lifetime of the cooling fan is limited by use.
z Grounding
Confirm that the wire is connected from the SIGNALGND
terminal to earth ground.
terminal to earth ground.
A grounding connection must be made before connecting the
power plug of the unit to the main power supply.
power plug of the unit to the main power supply.
When disconnecting the grounding wire, make sure that the
power plug of the unit is disconnected from the main power
supply.
power plug of the unit is disconnected from the main power
supply.
z Avoid placing the unit near noise sources
If the unit is placed near noise sources such as fluorescent
lamps, noises may be produced. In this case, rewire avoiding the
noise sources, or move the unit to the place far from them.
lamps, noises may be produced. In this case, rewire avoiding the
noise sources, or move the unit to the place far from them.
z Places to avoid
Do not place the unit in the following places:
⋅ Places exposed to direct sunlight
⋅ Places subject to having strong vibration or impact
⋅ Near magnetic field sources such as a television or speakers
⋅ Place where condensation forms easily, where temperature
⋅ Places subject to having strong vibration or impact
⋅ Near magnetic field sources such as a television or speakers
⋅ Place where condensation forms easily, where temperature
changes greatly, humid places
⋅ Steamy and oily places such as kitchens
⋅ Places which are not level
⋅ Places which are not level
z Cleaning
Turn the power off when cleaning the unit. Otherwise it may
cause injuries.
cause injuries.
Do not use strong or abrasive detergents when cleaning the unit
body.
body.
Use a dry cloth to clean the unit when it is dirty.
When the dirt is hard to remove, use a mild detergent and wipe
gently.
gently.
Precautions
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