Self Diagnosis - NEC MultiSync LCD1990SXp User Manual

Troubleshooting
Image is unstable, unfocused or swimming is apparent
• Signal cable should be completely attached to the computer.
• Use the OSM Image Adjust controls to focus and adjust display by increasing or
decreasing the fi ne 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-interlace and use 60Hz
refresh rate.
LED on monitor is not lit (no green, blue, or amber color can be seen)
• Power Switch should be in the ON position and power cord should be connected.
Picture is not as bright
• Make sure the ECO MODE, AUTO BRIGHTNESS, and COLORCOMP functions are
turned off.
• If the brightness fl uctuates, make sure that the AUTO BRIGHTNESS function is
turned off.
Display image is not sized properly
• Use the OSM Image Adjust controls to increase or decrease the Coarse total.
• Check to make sure that a supported mode has been selected on the display
card or system being used. (Consult display card or system manual to change
graphics mode.)
No Video
• If no video is present on the screen, turn the Power button off and on again.
• Make certain the computer is not in a power-saving mode (touch the keyboard or
mouse).

Self Diagnosis

• The LCD display is equipped with the ability to self diagnose abnormalities. When
the LCD detects a problem, the LED on the front fl ashes in a pattern of long and
short blinks, depending on the type of problem detected.
If the LED detects a problem, please refer service to qualifi ed personnel.
– continued
37