Dell OptiPlex GX1 - Manual (Page 148)

Diagnostic Video Tests: Dell OptiPlex GX1 Small-Form-Factor System User's Guide
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Diagnostics Video Tests: Dell™ OptiPlex™ GX1 Small-Form-Factor
System User's Guide
Overview Text Mode Pages Test
Video Memory Test Graphics Mode Test
Video Hardware Test Color Palettes Test
Text Mode Character Test Solid Colors Test
Text Mode Color Test
Overview
The Video Test Group of the Dell Diagnostics consists of the following tests, each of which verifies a
particular video function or group of functions:
Video Memory Test — Checks the integrity of characters generated from data in the video memory.
Video Hardware Test — Checks the functions of the cursor register and the horizontal and vertical
retrace bit registers.
Text Mode Character Test — Checks the video subsystem’s ability to present text mode data.
Text Mode Color Test — Checks the video subsystem’s ability to present color in text modes.
Text Mode Pages Test — Checks the video subsystem’s ability to map and present all available video
text pages on the monitor screen, one page at a time.
Graphics Mode Test — Checks the video subsystem’s ability to present graphics mode data and
colors.
Color Palettes Test — Checks the video subsystem’s ability to display all available colors.
Solid Colors Test — Checks the video subsystem’s ability to show screens full of solid colors. Allows
you to check for missing color subpixels.
All of these tests, except the Video Memory Test and the Video Hardware Test , are interactive. These
interactive tests display images on the monitor screen and require the user to respond with the following
steps:
1. Examine a displayed image for correctness.
2. If an image is correct, type y.
3. If an image is incorrect, type n.