Display Panel Built-In Self-Test (Lcd-Bist); Outcome - Dell G7 7700 Service Manual

Display panel built-in self-test (LCD-BIST)

About this task
Steps
1. Press and hold the D key and then press the power button.
2. Release both the D key and the power button when the computer begins POST.
3. The display panel begins to display a solid color, or cycling through different colors.
NOTE: The sequence of colors may very due to different display panel vendor. The user only needs to ensure that the
colors are being displayed correctly without distortion or graphical anomalies.
4. The computer reboots at the end of the last solid color.

Outcome

About this task
The following table shows the outcome of running different types of BIST.
Table 22. BIST outcome
Off
Solid amber
Table 22. BIST outcome
Off
LED error code of [2,8] blinks Amber x2, then pause, then blinks
White x8
M-BIST
No fault detected with system board.
Indicates a problem with the system board.
L-BIST
No fault detected with system board.
Indicates a problem with the system board.
Troubleshooting 93