IBM 8688 Running video tests, Video Monitor Test, Test Name Test Description Type of Monitor

To diagnose video display problems, complete the following steps:

1.From the main menu, select Video, and press Enter.

2.Select Video Memory Test, and press Enter.

For the video test error codes, see “Video test error codes” on page 167.

Running video tests

The video test you run depends on the type of monitor installed on your server.

Video Monitor Test

These tests verify the video controller output in addition to the communication between the controller and the display device.

Attribute Test: Use this test to make sure that the video display attributes, such as blinking, bold, and reverse video, are working correctly. You can run this test on all monochrome and all color monitors.

To run the attribute test, complete the following steps:

1.From the main menu, select Video, and press Enter.

2.Select Attribute Test, and press Enter.

Color Test: This test displays the possible colors in foreground, background, and border. You can run this test on all color monitors.

Text Mode Test: Use the Text Mode test to make sure that text displays correctly. The text mode tests are shown on the following table:

Test Name	Test Description	Type of Monitor
80 x 25 Display Test	Tests the 80 x 25 character set of the	All monochrome and all
	display adapter, displaying the entire	color monitors.
	character set in black and white, then
	in reverse video in video mode 3
	(mode 7 if monochrome).
40 x 25 Display Test	Tests the 40 x 25 character set of the	All monochrome and all
	display adapter in black and white,	color monitors.
	displaying the entire character set in
	black and white, then in reverse
	video.

Graphics mode tests: Use the graphics mode tests to make sure that graphics display correctly. The following subtests appear in all Graphics Mode Tests (320 x 200, 640 x 200, 640 x 350, 640 x 480):

Subtest	Description
Text and Attribute Test	Makes sure all characters are displayed in the proper
	color.
Grid Test	Verifies the graphic dot spacing for each mode.
Aspect Ratio and Display	Centers the monitor display.
Centering
Circular Pattern Test	Centers the monitor display.
Resolution	Reports the screen resolution.
Animation and Flicker	Reports the video controller speed.

52IBM xSeries 450 Type 8688: Hardware Maintenance Manual and Troubleshooting Guide