NEC MultiSync UN462A User Manual page 95

Screen Image and Video Signal Issues
No picture
• The signal cable should be completely connected to the
display card/computer.
• The display card should be completely seated in its slot.
• Check the main Power Switch, it should be in the ON
position.
• Make sure both the computer and monitor are powered
on.
• Make sure that a supported resolution has been selected
on the display card or system being used. If in doubt,
please refer to the user's manual of the display controller
or system to change the resolution.
• Check the monitor and your display card with respect to
compatibility and recommended signal timings.
• Check the signal cable connector for bent or pushed-in
pins.
• The monitor automatically goes into standby at the
preset time period after the video signal is lost. Press
the power on button on the remote control or press the
button on the monitor.
• Check the [DVI MODE] settings when a DVD player or
computer equipment is connected to the DVI input.
• If you unplug the signal cable when starting the
computer, images may not be displayed. Turn off the
monitor and the computer and then connect the signal
cable and turn on the computer and the monitor.
• Check the [OPTION POWER] setting when you use
Option Board accessories.
• Check for HDCP (High-bandwidth Digital Content
Protection) content. HDCP is a system for preventing
illegal copying of video data sent over a digital signal.
If you are unable to view material via the digital inputs,
this does not necessarily mean that the monitor is
not functioning properly. With the implementation of
HDCP, there may be cases in which certain content is
protected by HDCP and might not be displayed due to
the decision/intention of the HDCP community (Digital
Content Protection, LLC).
Snowy Picture, Black Screen in DVI input
• Check the DVI MODE setting when a DVD player or
computer equipment is connected to the DVI input.
Image persistence
• Please be aware that LCD Technology may experience
a phenomenon known as Image Persistence. Image
Persistence occurs when a residual or "ghost" image of
a previous image remains visible on the screen. Unlike
CRT monitors, the image persistence of monitors is not
permanent, but single still image being displayed for a
long period of time should be avoided. To alleviate image
persistence, put the monitor into standby via remote
control or turn the monitor's main power off for as long
as the previous image was displayed. For example, if an
image was on the monitor for one hour and a residual
image remains, the monitor should be in standby or main
power off for one hour to erase the image.


NOTEN: As with all personal display devices, NEC DISPLAY
SOLUTIONS recommends displaying moving
images, using a moving screen saver, or changing
still images at regular intervals whenever the screen
is idle, or turning it into standby or main power off of
the monitor when not in use.
The image is blinking
• If you use a signal repeater or distributor or a long
cable, this may cause image roughness or blink for a
moment. In this case please connect the cable to the
monitor directly without using a repeater or a distributor,
or replace the cable with a higher quality cable. Using
a twisted pair extender may cause image roughness
depending on the environment where the monitor is in or
the cable you are using. For further information please
ask your supplier.
• Some HDMI cables may not show a correct image.
If input resolution is 1920 x 2160, 3840 x 2160 or
4096 x 2160, please use an HDMI cable which is
approved to support 4K resolution.
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