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Safety Precautions, Maintenance & Recommended Use; Safety Precautions And Maintenance; Recommended Use; Ergonomics - NEC BT421 User Manual

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Safety Precautions, Maintenance & Recommended Use

Safety Precautions and Maintenance

DO NOT OPEN THE MONITOR. There are no user
serviceable parts inside and opening or removing covers
may expose you to dangerous shock hazards or other
risks. Refer all servicing to qualified service personnel.
Do not bend, crimp or otherwise damage the power cord.
Do not place any heavy objects on the power cord.
Damage to the cord may cause shock or fire.
The power supply cord you use must have been
approved by and comply with the safety standards of your
country. (Type H05VV-F 3G 0.75 mm
In UK, use a BS-approved power cord with molded
plug having a black (5 A) fuse installed for use with this
The power cable connector is the primary means of
detaching the system from the power supply. The monitor
should be installed close to a power outlet, which is easily
Do not spill any liquids into the cabinet or use your
monitor near water.
Do not insert objects of any kind into the cabinet slots,
as they may touch dangerous voltage points, which can
be harmful or fatal or may cause electric shock, fire or
equipment failure.
Do not place this product on a sloping or unstable cart,
stand or table, as the monitor may fall, causing serious
damage to the monitor.
Do not mount this product upside down for an extended
period of time as it may cause permanent damage to the
Do not place any objects onto the monitor and do not use
the monitor outdoors.
If glass is broken, handle with care.
Temperature controlled fans are implemented in this
monitor. For reliable performance and long useful life of
this product, it is mandatory to not cover any vents on the
If monitor or glass is broken, do not come in contact with
the liquid crystal and handle with care.
Allow adequate ventilation around the monitor, so that
heat can properly dissipate. Do not block ventilated
openings or place the monitor near a radiator or other
heat sources.
Do not put anything on top of the monitor.
Handle with care when transporting. Save packaging for
If using the cooling fan continuously, it is recommended to
wipe holes clean a minimum of once a month.
To ensure the monitor's reliability, please clean the holes
at the back side of the cabinet at least once a year to
remove dirt and dust.
When using a LAN cable, do not connect to a peripheral
device with wiring that might have excessive voltage.
Connecting to a TV*
should be used in
Under the following conditions immediately disconnect your
monitor from the wall outlet and refer servicing to qualified
service personnel:

Recommended Use


To realize the maximum ergonomic benefits, we recommend
the following:
* The product you purchased may not have this feature.
Do not use the monitor in high temperature, humid, dusty,
or oily areas.
Do not use monitor under rapid temperature and humidity
change condition and avoid cold air from air-conditioning
outlet directly, as it may shorten the lifetime of the monitor
or cause condensation. If condensation of water has
happened, let the monitor stand unplugged until the
condensation has disappeared.
Cable distribution system should be grounded (earthed)
in accordance with ANSI/NFPA 70, the National Electrical
Code (NEC), in particular Section 820.93, Grounding of
Outer Conductive Shield of a Coaxial Cable.
The screen of the coaxial cable is intended to be
connected to earth in the building installation.
When the power supply cord or plug is damaged.
If liquid has been spilled, or objects have fallen into the
If the monitor has been exposed to rain or water.
If the monitor has been dropped or the cabinet has been
If you notice any structural damage such as cracks or
unnatural wobbling.
If the monitor does not operate normally by following
operating instructions.
For the monitor's optimum performance, allow 20 minutes
for warming up.
Rest your eyes periodically by focusing on an object at
least 5 feet away. Blink often.
Position the monitor at a 90° angle to windows and other
light sources to minimize glare and reflections.
Clean the LCD monitor surface with a lint-free, non-
abrasive cloth. Avoid using any cleaning solution or glass
Adjust the monitor's brightness, contrast and sharpness
controls to enhance readability.
Avoid reproduction of still patterns on the monitor for long
periods of time to avoid image persistence (after image
Get regular eye checkups.
Use the preset Size and Position controls with standard
Use the preset Color Setting.
Use non-interlaced signals.
Do not use primary color blue on a dark background, as
it is difficult to see and may produce eye fatigue due to
insufficient contrast.
Suitable for entertainment purposes at controlled
luminous environments, to avoid disturbing reflections
from the screen.



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