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3-6 Using the Monitor
TROUBLE-
SHOOTING
Use the troubleshooting table below to isolate any
problems
and respond with the appropriate corrective
action.
If you still cannot determine the
problem,
contact
your NEC
dealer.
Troubleshooting
PROBLEM
CORRECTIVE ACTION
No picture appears on
the
monitor Screen.
Turn off the
power
switch.
Wait at least
30 seconds and then turn it on again.
The monitor is dark, but the
power indicator is lit.
Adjust the Brightness and Contrast
controls.
Image area is not centered.
Adjust
the
Vertical
Position control or
Horizontial Position control.
CLEANING
Clean the outside of the monitor as needed. Use the
following precautions as guidelines:
n
Unplug the monitor’s power cord from the outlet
before cleaning.
n
Use only a damp cloth and mild detergent.
n
DO not attempt to open the unit.