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 ratin
g
s.
Use the unit at temperatures
b
et
w
een +5 ºC - +45 ºC {41 ºF - 113
ºF} and
w
here the humidity is
b
et
w
een 5 % - 90 %.
The input po
w
er source for NTSC model is 120
V
AC 60 Hz, for
PAL model is 220
V
- 240
V
AC 50 Hz.
Performance and lifetime of hard disk drives are easily affected
b
y heat (used at high temperature) characteristically. It is
recommended to use this unit at temperatures
b
et
w
een +20 ºC -
+30 ºC {6
8
ºF -
8
6 ºF}.
z
POWER switch
The PO
W
ER s
w
itch is located on the rear of the unit. Even
though the PO
W
ER s
w
itch is set to "OFF", the po
w
er supply
w
ill
not
b
e cut. To cut the po
w
er supply, unplug the po
w
er plug of the
unit from the AC outlet.
W
hen using the po
w
er supply control
unit, turn off the po
w
er of the po
w
er supply control unit.
z
Built-in backup battery
Before the first use, charge the
b
uilt-in
b
ackup
b
attery (lithium
b
attery)
b
y turning on the po
w
er for 4
8
hours or more.
If it is not charged enough, in a case
w
here the po
w
er goes
do
w
n, the internal clock may keep
b
ad time or the operative
condition may
b
e different to that
b
efore the electric po
w
er
failure.
The
b
uilt-in
b
attery life is approximately 5 years as an indication
of replacement. (This is just an indication of replacement.
W
e are
not providing any guarantee of the
b
uilt-in
b
attery lifetime.
Replacement cost of the
b
uilt-in
b
attery is not covered
b
y the
w
arranty even if it needs to
b
e done
w
ithin the
w
arranty period.)
Ask the dealer
w
here you purchased the unit
w
hen replacement
of the
b
attery is re
q
uired.
z
Hard disk drives
Hard disk drives are vulnera
b
le to vi
b
ration. Handle them
w
ith
care.
It is possi
b
le to damage them if they are moved
w
hile their
motors are still running. Do not move them just after turning their
po
w
er on or off (for around 30 seconds).
⋅
A lifetime of hard disk drives is limited
b
y use.
It is recommended to replace them after around 1
8
000 hours
of operation to prevent data loss from disk failures.
W
rite error may occur fre
q
uently after around 20 000 hours of
operation and the head and motor deterioration may occur
and
w
ill reach their lifetime after 30 000 hours of operation
w
hen they have
b
een used at the recommended am
b
ient
temperature (approx. +25 ºC {77 ºF}).
W
hen hard disk drive trou
b
le occurs, replace it immediately.
Consult your dealer for servicing.
⋅
Hard disk drives are precise devices. Do not leave them
w
here the temperature is high and humid.
⋅
Do not touch the connector of the remova
b
le hard disk
b
y
hand directly to protect the hard disk drive from static
electricity.
⋅
Take notice of the follo
w
ing for the removed hard disks.
⋅
Do not leave them
w
here the temperature is high and
humid. It may cause condensation.
⋅
Place them
w
here the temperature is
b
et
w
een 0 ºC {32 ºF}
and 30 ºC {
8
6 ºF} and humidity is
b
et
w
een 20 - 40 %
w
hen
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
w
hen they are not used for a long time.
⋅
W
hen placing them stacked, do not stack more than four
disks.
z
Heat dissipation
Refer to the follo
w
ing to prevent fire and malfunction of the unit.
⋅
Do not
b
lock the front and rear for smooth ventilation.
⋅
Keep the unit 5 cm {1.97 "} or more a
w
ay from the
b
oth sides
and the upper side.
⋅
Keep clean the ventilation openings of the unit to prevent
overheating.
⋅
A lifetime of the cooling fan is limited
b
y use.
z
Groundin
g
Confirm that the
w
ire is connected from the SIGNALGND
terminal to earth ground.
A grounding connection must
b
e made
b
efore connecting the
po
w
er plug of the unit to the main po
w
er supply.
W
hen disconnecting the grounding
w
ire, make sure that the
po
w
er plug of the unit is disconnected from the main po
w
er
supply.
z
Avoid placin
g
the unit near noise sources
If the unit is placed near noise sources such as fluorescent
lamps, noises may
b
e produced. In this case, re
w
ire 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 follo
w
ing places:
⋅
Places exposed to direct sunlight
⋅
Places su
b
ject to having strong vi
b
ration or impact
⋅
Near magnetic field sources such as a television or speakers
⋅
Place
w
here condensation forms easily,
w
here temperature
changes greatly, humid places
⋅
Steamy and oily places such as kitchens
⋅
Places
w
hich are not level
z
Cleanin
g
Turn the po
w
er off
w
hen cleaning the unit. Other
w
ise it may
cause injuries.
Do not use strong or a
b
rasive detergents
w
hen cleaning the unit
b
ody.
Use a dry cloth to clean the unit
w
hen it is dirty.
W
hen the dirt is hard to remove, use a mild detergent and
w
ipe
gently.
Precautions
ND400_Basic.book 9 ページ ２００８年７月１０日 木曜日 午前１０時５０分
Содержание WJND400 - NETWORK DISK RECORDER
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