Service manual

Diagnostic Video Tests: Dell Latitude CP
The 800- x 600-pixel 256-color graphics mode screen displays a series of squares with four
colors in each square. Type y if all the squares appear to be correct; otherwise, type n.
1024 x 768 16-Color Graphics Mode Screen (External Monitor)
The 1024- x 768-pixel 16-color graphics mode screen displays a series of hourglasses in 16
different colors with the name of the color beneath each hourglass. Type y if all the
hourglasses appear to be correct; otherwise, type n.
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.
Color 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 different 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;
otherwise, 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.
Solid Colors Test
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