Troubleshooting - NEC Multeos M40 User Manual

No picture
• The signal cable should be properly connected to the display
card/computer.
• The display card should be properly seated in its slot.
• Front Power Switch and computer power switch should be in
the ON position.
• Check to make sure that a supported mode has been selected
on the display card or system being used. (Please consult
display card or system manual to change graphics mode.)
• Check the monitor and your display card with respect to
compatibility and recommended settings.
• Check the signal cable connector for bent or pushed-in pins.
Power Button does not respond
• Unplug the power cord of the monitor from the AC outlet to
turn off and reset the monitor.
Image persistence
• Please be aware that LCD Technology may experience a
phenomena 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, LCD
monitors' image persistence is not permanent, but constant
images being displayed for a long period of time should be
avoided. To alleviate image persistence, turn off the monitor
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 turned off for one hour
to erase the image.
NOTE: As with all personal display devices, NEC Display
Solutions of America, Inc. recommends displaying moving
images and using a moving screen saver at regular intervals
whenever the screen is idle or turning off the monitor when
not in use.
Image is unstable, unfocused or
swimming is apparent
• Signal cable should be properly attached to the LCD monitor,
computer, or other input device.
• Use the OSM screen controls to focus and adjust display by
increasing or decreasing the clock phase total. When the
display mode is changed, the OSM Image Adjust settings may
need to be readjusted.
• Check the monitor and your display card with respect to
compatibility and recommended signal timings.
• If your text is garbled, change the video mode to non-
interlaced and use 60Hz refresh rate.
Image of component signal is greenish
• Check to see if the DVD/HD input connector is selected.
LED on monitor is not lit
(no green or red color can be seen)
• Main Power Switch should be in the ON position and power
cord should be connected.
• Make certain the computer is not in a power-saving mode
(touch the keyboard or mouse).
Red LED on monitor is blinking
• A certain failure might have occurred, please contact your
nearest authorized NEC DISPLAY SOLUTIONS service
facility.
Display image is not sized properly
• Use the OSM screen controls to increase or decrease the clock
total.
• Check to make sure that a supported mode has been selected
on the display card or system being used. (Please consult
display card or system manual to change graphics mode.)
Selected resolution is not displayed properly
• Use OSM information to enter Information menu and confirm
that the appropriate resolution has been selected. If not, select
appropriate resolution.
"SCHEDULE SETTINGS" / "OFF TIMER"
functions not working properly
• The "SCHEDULE SETTINGS" function will be disabled when
the "OFF TIMER" is set.
• If the "OFF TIMER" function is enabled and the power
to the LCD monitor is turned off or if the power supply is
interrupted unexpectedly, then the OFF TIMER will be reset.
No Sound
• Check to see if speaker cable is properly connected.
• Check to see if mute is activated.
• Check to see if volume is set at minimum.
NOTE: It is possible to play audio from a source that is different
from the video source. When setting parental controls for video,
be aware that this content is not filtered.
RS-232C does not work
• Make sure the monitor is not in "Eco Standby" mode. (see page 30)
Remote Control does not work
• Make sure the batteries are inserted properly.
• Test the batteries for strength/life.
• Make sure to point the remote directly at the sensor on the
monitor.
•
Check if the remote is in Remote ID mode.
• The remote control may not function when in direct sunlight
or when there is strong illumination on the remote sensor of
the monitor.
PIP (Picture In Picture) does not work
• Check the resolution of the input signal. PIP does not work
with all types of "1080i" input signals. The PIP function will
work with 1080p signals.
Snowy Picture, Poor Sound in TV
• Check antenna/cable connection. Use new cable if necessary.
Interference in TV
• Check components for shielding. Move them away from the
monitor if necessary.
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Troubleshooting