Troubleshooting - NEC MultiSync LCD1800 User Manual

6
6

TROUBLESHOOTING

PROBLEM
•
Contrast and brightness controls.
LED On
(Green)
•
Power switch.
LED Off
•
Power cord disconnected.
No
picture
•
Signal cable disconnected.
LED On
•
Computer power switch.
(Amber)
•
Power management function is active.
•
The following message appeared. Input signal frequency range is out of specification.
•
Display Resolution is out of range.
The following message appeared.
•
Signal cable disconnected.
•
Computer power switch.
•
Power management function is active.
Illegible image, ab- •
Adjust, RESOLUTION, CLOCK, CLOCK-PHASE, H-POSITION,
normal position of
and V-POSITION with non-standard signals.
screen, or too small •
Monitor may not be able to get full-screen image depending on
or too large of a dis-
signal. In this case, please select other resolution, or other
vertical refresh timing.
play size
•
Make sure you wait a few seconds after adjusting the size of the
image before changing or disconnecting the signal or powering
OFF the monitor.
Before calling your Authorized Product Support, please
check that the items below are properly connected or set.
In case of using a non-standard signal, please check the
pin assignments and the signal timing of your computer
with the specification outlined in 7. SPECIFICATIONS.
ITEMS TO CHECK
- 1-12 -
LOCATION
•
Front
•
Front
• Rear
• Rear
•
Computer
• Check the specification
of graphics adapter and
monitor
• Rear
•
Computer
• Front (OSM ™ )
• Front (OSM)