1024 X 768 256-Color Graphics Mode Screen (External Monitor; Color Palettes Test; Solid Colors Test - Dell Latitude CP Reference And Troubleshooting Manual

1024 x 768 256-Color Graphics Mode
Screen (External Monitor)
The 1024- x 768-pixel 256-color graphics mode screen
displays a series of asterisks with four colors in each
asterisk. Type y if all the asterisks appear to be correct;
otherwise, type n.
C
olor Palettes Test
The Color Palettes Test checks the video subsystem's
ability to display all available colors. The test displays
two screens that allow you to check the quality of differ-
ent shades of the basic colors and to test the ability of the
display or monitor to vary the intensity of these colors.
The first screen contains four sets of 64 squares, one for
gray and one for each of the three basic colors (red,
green, and blue). Each square contains a different shade
of its associated color, ranging from very light to very
dark. Type y if all the squares are the correct colors; other-
wise, type n.
The second screen is the red/green/blue (RGB) color
combination screen. This screen allows you to test the
ability of the display or monitor to increase or decrease
the intensity of the three basic colors.
The RGB color combination screen displays an RGB box in
the top center of the screen with individual red, green, and
blue boxes beneath it. Underneath the individual color boxes
are three lines that show the intensity of each color. Type r,
g, or b to adjust the intensity of the corresponding color; then
press the right-arrow key to increase the color intensity, or
press the left-arrow key to decrease the intensity. Type y if all
the squares are the correct colors; otherwise, type n.
S
olid Colors Test
The Solid Colors Test checks whether the video sub-
system is displaying the correct colors. This test also lets
you check for missing pixels. When this test is running,
four screens appear sequentially—a red screen, a green
screen, a blue screen, and a white screen. Check each
screen for missing pixels, and verify that the correct color
is being displayed.
When the test is complete, a message asks if you are sat-
isfied with the quality of the colors. Type y if all the pixels
were present and if the correct colors were displayed; other-
wise, type n.
Diagnostic Video Tests B-5