User's Manual

Security / Reliability

Enhanced protection against dust

Electronic devices are under constant attack from dust. In order to protect the

LCD panel against excess dust, special measures have been employed in its

construction.

Corner sealing design = special corner welding

Double layer structure = double bezel/double groove

Screw & user hole sealing = proprietary screw fastening and sealing system

Many LCD panels on the market have a more-or-less open design. This allows dust

to penetrate into the panel which can lead to imperfections. The NEC MultiSync

LCD4020, LCD4620 and LCD5220 products are equipped with a completely

sealed panel, which guarantees perfect image quality over many years.

Failure of the backlights

NEC’s public displays report back problems or failure of the backlight using

the Backlight Failure Reporting function. Particularly for larger installations,

the NaviSet

Administrator command allows a fast and easy check to see that

all of the displays are 100% operational.

Self-diagnosis over the network

Using NaviSet

Administrator, NEC‘s displays can automatically send error

messages about their component parts or other monitor malfunctions using

the RS232-C standard or via DDC/CI, for example, if the lamp or printed

circuit board is defective. Problems or failures can therefore be pinpointed

and repaired as fast as possible. This means repair times and service costs

are at the lowest possible level.

Free choice of ID

Every display can be assigned its own freely-selectable ID. With multi-screen

installations, for example, this means that each display can be veriﬁed and

controlled without interfering with the operation of the others. The function (ID

Mode) can also be remotely switched on and off.