NEC MultiSync LCD2335WXM User Manual page 32

Troubleshooting
Symptoms
If the solution does not correct the symptoms, please contact your local Service center for assistance.
WARNING
Symptom
There is no picture and the power-indicating lamp
is off.
The message "No cable connected" or "Going to
sleep" is displayed.
There is no picture and the power indicating lamp
lights orange.
The message "Invalid Mode." is displayed.
The power indicating lamp is lit normally but there
is no picture.
The display image appears slanted.
Text displayed across the
vertically streaked, with the characters in vertical
columns blurred.
Text displayed across the screen appears blurred.
A fine pattern flickers when displayed on the
screen.
The remote control does not work.
continued
DO NOT OPEN THE MONITOR.
Self servicing can be hazardous. There are no
user serviceable parts inside and opening or
removing covers may expose you to
dangerous shock hazards or other risks.
Refer all servicing to qualified personnel.
screen appears
30
Point to check
Check to see that the power cable is properly
connected.
Press the main switch.
No sync signal is detected.
Check that the signal cable is properly connected.
Make sure that the computer, imaging equipment,
etc., is turned on.
Make sure the computer is not in power-save mode.
Ensure that the input selection matches the
connection terminal.
An input signal is received abnormally.
Ensure that the input signal matches the monitor
specifications.
Check to see that the signal cable is properly
connected.
Check the contrast and brightness settings
(adjust them for higher contrast and brightness).
Check to see that the signal cable is properly
connected.
Adjust the clock frequency and the phase.
(Adjust the clock frequency first, the dot clock
phase next.) (RGB input)
Adjust the clock phase till the desired clarity is
obtained.
(RGB input)
Ensure that the batteries in the remote control are
inserted with the correct polarity.
Check to see that the batteries in the remote
control are functional.
See Page
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