Troubleshooting
If the picture quality is poor or there is some other problem, check the adjustments, operations, etc., before requesting service.
Symptom ChecksRemedy
Picture is disturbed.Y Is a connected component set directly inY Leave some space between the display and
Sound is noisy.front or at the side of the display?the connected components.
Remote control operates erroneously.
The remote control does not work.Y Are the remote controlOs batteries wornY Replace both batteries with new ones.
out?
MonitorOs power does not turn onY Is the monitorOs power cord plugged intoY Plug the monitorOs power cord into a power
when the remote controlOs powera power outlet?outlet.
button is pressed.Y Are all the monitorOs indicators off?Y Press the power button on the monitor to
turn on the power.
Y Are the remote controlOs batteries wornY Replace both batteries with new ones.
out?
Monitor does not operate when theY Is the remote control pointed at theY Point the remote control at the monitorOs
remote controlOs buttons are pressed.monitor, or is there an obstacle betweenremote control sensor when pressing
the remote control and the monitor?buttons, or remove the obstacle.
Y Is direct sunlight or strong artificial lightY Eliminate the light by closing curtains,
shining on the monitorOs remote controlpointing the light in a different direction, etc.
sensor?
Y Are the remote controlOs batteries wornY Replace both batteries with new ones.
out?
Y The remote cable is plugged into theY Unplung the remote cable from the monitor.
REMOTE IN terminal (Wired).
Y The front panel buttons of the main unitY The front panel buttons do not function
do not function.during Control Lock.
No sound or picture is produced.Y Is the monitorOs power cord plugged into aY Plug the monitorOs power cord into a power
power outlet?outlet.
Picture appears but no sound isY Is the volume set at the minimum?Y Increase the volume.
produced.Y Is the mute mode set?Y Press the remote controlOs MUTE button.
Y Are the speakers properly connected?Y Connect the speakers properly.
Y Is AUDIO INPUT set correctly?Y Set AUDIO INPUT on the OPTION menu
correctly.
Poor picture with VIDEO signal input.YImproper control setting.Y Adjust picture control as needed.
Local interference.Try another location for the monitor.
Cable interconnections.Be sure all connections are secure.
Input impedance is not correct level.
Poor picture with RGB signal input.Y Improper control setting.Y Adjust picture controls as needed.
Incorrect 15 PIN connector pinCheck pin assignments and connections.
connections.
Tint is poor or colors are weak.Y Are the tint and colors properly adjusted?Y Adjust the tint and color (under OPICTURE�).
Nothing appears on screen.Y Is the computerOs power turned on?Y Turn on the computerOs power.
Y Is a source connected?Y Connect source to the monitor.
Y Is the power management function in theY Operate the computer (move the mouse,
standby or off mode?etc.).
Part of picture is cut off or picture isY Is the position adjustment appropriate?Y Adjust the OSCREEN� properly.
not centered.
Image is too large or too small.Y Is the screen size adjustmentY Press the OWIDE� button on the remote
appropriate?control and adjust properly.
Picture is unstable.Y Is the computerOs resolution settingY Set to the proper resolution.
appropriate?
POWER/STANDBY indicator isY Horizontal and / or vertical sync signal isY Check the input signal.
lighted in orange or red.not present when the Intelligent Power
Manager control is on.
POWER/STANDBY indicator isY The temperature inside the main unit hasY Promptly switch off the power of the main
blinking in red.become too high and has activated theunit and wait until the internal temperature
protector.drops. See*1.
POWER/STANDBY indicator isNNNNNNY Prompty switch off the power of the main
blinking in green and red, or green.unit. See *2.
*1 Overheat protector
If the monitor becomes too hot, the overheat protector will be activated and the monitor will be turned off. If this happens, turn off the power to the monitor
and unplug the power cord. If the room where the monitor is installed is particularly hot, move the monitor to a cooler location and wait for the monitor
to cool for 60 minutes. If the problem persists, contact your NEC dealer for service.
*2 In the following case, power off the monitor immediately and contact your dealer or authorized NEC Service Center.
The monitor turns off 5 seconds after powering on and then the POWER/STANDBY indicator blinks. It indicates that the power supply circuit or plasma
display panel or, one or more fans have been damaged.
57 |
ACEC
