Dell E170S - 17" LCD Monitor User Manual - Page 26

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Solving Problems

Dell™ E170S/E190S Flat Panel Monitor User's Guide 
  Self-Test
  Built-in Diagnostics
  Common Problems
  Product-Specific Problems
  Troubleshooting the Dell™ Soundbar (Optional) 
 
 
CAUTION:
Before you begin any of the procedures in this section, follow the
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 back of the computer. To ensure proper Self-Test operation, remove the Analog (blue connector) cables from the back of
computer.
3. Turn on the monitor.
The floating 'Dell™ - Self Test Feature Check' dialog box should appear on-screen (against a black background) if the monitor cannot sense a video
signal and is working correctly. While in self-test mode, the power LED remains green. Also, depending upon the selected input, one of the dialogs
shown below will continuously scroll through the screen.
4. This box also appears during normal system operation if the video cable becomes disconnected or damaged.
5. Turn off your monitor and reconnect the video cable; then turn on both your computer and the monitor.
If your monitor screen remains blank after you use the previous procedure, check your video controller and computer system; your monitor is functioning
properly.

Built-in Diagnostics

Your monitor has a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent problem with your monitor, or
with your computer and video card.
NOTE:
You can run the built-in diagnostics only when the video cable is unplugged and the monitor is in self-test mode.
To run the built-in diagnostics:
1. Ensure that the screen is clean (no dust particles on the surface of the screen).
2. Unplug the video cable(s) from the back of the computer or monitor. The monitor then goes into the self-test mode.
3. On the front panel, press and hold the Menu (button 1) and + (button 3) keys on the front panel, simultaneously for 2 seconds. A gray screen
appears.
Safety
Instructions.