Samsung 400TSn - Manual (Page 92)

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 ("Check Signal Cable") 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 computer and
the LCD Display
If your LCD Display screen remains blank after using the previous procedure, check your video con-
troller and computer system; your LCD Display is functioning properly.
Warning Messages
You can even view the screen at a resolution of 1360(1920) x 768(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. And 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.