Epson Equity II - Manual (Page 121)

320x200 graphics mode check
To check your 320x200 graphics mode, press 5 and then Enter.
The screen displays three colored squares-light green, brown, and
red-against a cyan background. These four colors are Color Set 0. If they
are correct, press Y and then Enter.
The same pattern displays again; this time the squares are cyan, white,
and magenta, and the background is red. These colors are called
Color Set 1. If these are also correct, press Y and then Enter to end the test.
If any colors display incorrectly, first check the adjustment of your moni-
tor, and 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.
640x200 graphics mode check
To check your 640x200 graphics mode, press 6 and followed by Enter.
The screen displays three patterned squares against a black background,
as shown below.
If the patterns on your screen are clear and distinct, press Y and then
If any pattern is not clear, 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.
4-14 Diagnostics