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640x480 graphics mode check
To check your 640x480 graphics mode, press 7 and then
displays three patterned squares like the ones shown below:
If the patterns on your screen are clear and distinct, press Y and then
If any pattern is not displayed clearly, first check the adjustment of your
monitor, and then make sure that both ends of the cable are plugged in firmly.
If a problem still exists, press
Monochrome/Color video check
To check your monochrome or color video, press 8 and then
If you have a color monitor, the test displays 16 different screens, each with a
different background color and a message indicating the color. If you have a
monochrome monitor, the test displays a black and then a white screen.
After the first screen is displayed, press any key to display the next screen.
Performing System
and
N
Enter
Diagnostics
Enter.
to display the error message.
The screen
Enter.
Enter.
D-11
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