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Samsung SyncMaster 400UXN-3 User Manual Page 141

Samsung 400uxn3: user guide.
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Troubleshooting
Self-Test Feature Check
Note
Check the following items yourself before calling for assistance. Contact a Service Center for
problems that you cannot solve by yourself.
Self-Test Feature Check
1.
Turn off both your computer and the LCD Display.
2.
Unplug the video cable from the back of the computer.
3.
Turn on the LCD Display.
The figure shown below ("No Signal") appears on a black background when the LCD
Display is working normally even though no video signal is detected: While in the Self-
Test mode, the LED power indicator remains green and the figure moves around on the
screen.
4.
Turn off your LCD Display and reconnect the video cable; then turn on both your com-
puter and the LCD Display
If your LCD Display screen remains blank after using the previous procedure, check your
video controller and computer system; your LCD Display is functioning properly.
Warning Messages
You can even view the screen at a resolution of 1920 x 1080. However, you will receive the
following message for a minute; You can choose to change the screen resolution or stay in
the current mode during that time. If the resolution is more than 85Hz, you will see the black
screen because the LCD Display does not support over 85Hz.
Note
Refer to Specifications > Preset Timing Modes for the resolutions or frequencies supported
by the LCD Display.
Maintenance and Cleaning
1) Maintaining the LCD Display Case.
Clean with a soft cloth after disconnecting the power cord.

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