Toshiba NB100 Maintenance Manual page 110

3 Diagnostic Programs
Subtest 07 Register Test
This test item is to check whether the registers of the video adapter works
normally.
Subtest 08 Color Purity Test
This test item is to check whether the system (the video adapter and the display)
could display the purity color of red, green, blue, black and white.
In the test, user is required to respond according to the instruction in the screen.
Subtest 09 Direct Color Test
This test item is to check the video adapter's composing ability of direct color in
high and true color mode.
In the test, user is required to respond according to the instruction in the screen.
TOSHIBA NB100 Maintenance Manual
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3.8 Video