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

摘要: The following article provides information about running the self-test on Dell D1918H, D2421H, D2421DS, and D2721H monitors.

本文章適用於 本文章不適用於 本文無關於任何特定產品。 本文未識別所有產品版本。
查看其他資源

說明

Monitor Self-Test

The self-test (integrated diagnostic tool) helps you determine if any screen abnormality you experience is an inherent problem with: (For example: Your monitor, video cable, video card, driver, 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 on the monitor simultaneously.
    D-Series Monitor Buttons
    The monitor enters the self-test screen.
  4. Carefully inspect the screen for abnormalities as the display 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.

Back to Top

受影響的產品

Dell D1918H, Dell D2421H, Dell D2721H
文章屬性
文章編號: 000188980
文章類型: How To
上次修改時間: 13 11月 2025
版本:  12
向其他 Dell 使用者尋求您問題的答案
支援服務
檢查您的裝置是否在支援服務的涵蓋範圍內。