Dell POWEREDGE 4300, Installation And Troubleshooting Manual

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Running the Dell Diagnostics 5-17
Many of these tests display characters or graphics on the screen for you to verify.
Samples of these screens are shown in Appendix A, “Diagnostic Video Tests.”
NOTE: The default for testing super video graphics array (SVGA) modes is No . If you
are testing an external monitor, change the default to Yes .
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Many of the symptoms that would prompt you to run a subtest in the Video test
group are obvious, because the monitor is the visual component of the computer sys-
tem. Before you run the
Video test group or any of its subtests, you should make
sure that the problem is not in the software or caused by a hardware change. You
should also try running all of the software support utilities provided for the monitor
and the video subsystem.
If the following symptoms still occur, run the appropriate test(s) as follows:
‡
If the monitor shows a partially formed or distorted image, run all of the subtests
in the Video test group.
‡
If the alignment of text or images is off, regardless of the program you are run-
ning, run the Text Mode Character Test , Text Mode Pages Test , and Graphics
Mode Test .
‡
If you have a color monitor or a program that runs in color, but the color is inter-
mittent or not displayed at all, run the
Text Mode Color Test , Color Palettes
Test , and Solid Colors Test .
‡
If the monitor malfunctions in one mode but works fine in another (for example,
text is displayed correctly, but graphics are not), run the
Text Mode Character
Test , Text Mode Color Test , Text Mode Pages Test , and Graphics Mode Test .
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The subtests in the Keyboard test group verify the correct operation of the keyboard
and the keyboard controller chip.
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The five keyboard subtests and the functions they test follow:
‡
Keyboard Controller Test
Confirms the ability of the keyboard controller chip to communicate with the key-
board and tests the programming of the controller chip
‡
Keyboard Key Sequence Test
Verifies that the keys on the keyboard function correctly when you press the keys
in a predefined order