NEC JC-1431VMB - Manual (Page 16)

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 D
O
not attempt to open the unit.