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Article Number: 000188980

How to Run the Dell D1918H, D2421H, D2421DS, and D2721H Monitor Self Test

Summary: Information about running the self-test on Dell D1918H, D2421H, D2421DS, and D2721H monitors.

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Article Content

Instructions

Monitor Self-Test

The self-test (integrated diagnostic tool) will help you determine if any screen abnormality you experience is an inherent problem with your monitor, video cable, video card, drivers or computer.


Steps for running the self-test:

  1. Disconnect all video cables from the monitor and turn off your monitor.

  2. Turn on the monitor.

  3. When the Dell logo disappears and the screen shows “No signal,” press buttons 2 + 3 + 5 (Figure 1) on the monitor simultaneously.
    D-Series Monitor Buttons
    Figure 1

    The monitor will enter the self-test screen.

  4. Carefully inspect the screen for abnormalities as the displays turns to red, green, blue, black, and white automatically.

  5. Press button 5 to exit the self-test screen.


If you do not detect any screen abnormalities while using the self-test tool, the monitor is functioning properly. Check your video cable, video card, drivers, and computer.


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Additional Information

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Article Properties

Affected Product

Dell D1918H, Dell D2421H, Dell D2721H

Last Published Date

11 Jan 2024

Version

5

Article Type

How To

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