Dell S3425DW - Troubleshooting; Self-Test

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Troubleshooting
Troubleshooting
WARNING: Before you begin any of the procedures in this section, follow the Safety instructions.
Self-Test
Your monitor provides a self-test feature that allows you to check whether your monitor is functioning properly. If your monitor and
computer are properly connected but the monitor screen remains dark, run the monitor self-test by performing the following steps:
1.
Turn off both your computer and the monitor.
2.
Unplug the video cable from the computer.
3.
Turn on the monitor.
If the monitor cannot sense a video signal and is working correctly, the following message appears:
Figure 49. The message of no HDMI 1 cable
or
Figure 50. The message of no HDMI 2 cable
or
Figure 51. The message of no USB-C cable
NOTE: The message may slightly vary according to the connected input signal.
NOTE: While in self-test mode, the power LED remains white.
4.
This message can also appear during normal system operation if the video cable gets disconnected or damaged.
5.
Turn off your monitor, reconnect the video cable, and then turn on both the computer and the monitor.
If your monitor screen remains blank after performing the above steps, it indicates the monitor is functioning properly. Check the
video controller and computer.