Epson Equity Ie Q50188015-1 - Manual (Page 99)

640x480 graphics mode check
To check your 640x480 graphics mode, press 7 and then Enter. The screen
displays three patterned squares like the ones shown below:
If the patterns on your screen are clear and distinct, press Y and then Enter.
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
N and Enter to display the error message.
Monochrome/Color video check
To check your monochrome or color video, press 8 and then Enter.
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
Diagnostics D-11