Knowledge Base

Follow the steps in this article to start the Liquid Crystal Display Built-In Self-Test (LCD BIST) on the Dell OptiPlex 9020 All-in-One (AIO) computer.

How do I test the display on my OptiPlex 9020 AIO System?

Start the Built-In Self-Test

OptiPlex 9020 All-in-One systems have an LCD Built-In Self-Test (BIST) you can activate and run following the steps below:

1. On the right side of the LCD, there is the power button and 3 additional buttons above the Hard Drive activity LED.
2. With the system off, press and hold the bottom of the three buttons. While holding the 3rd button, press and release the power button: (Figure 1)
   
   Figure 1. - Pressing 3rd button and power button to start the LCD BIST
3. The LCD will display solid color screens in RED, GREEN, BLUE, BLACK and WHITE, then a Text Page.

These screens allow you to detect color and distortion defects in the LCD.