Epson 386SX - Manual (Page 214)

Color Video Check
This test displays 16 different screens, each a different color,
and a message indicating the color. The screens show the
following colors in the order specified below:
1 - Black 9 - Gray
2 - Blue 10 - Light blue
3 - Green 11 - Light green
4 - Cyan 12 - Light cyan
5 - Red 13 - Light red
6 - Magenta 14 - Light magenta
7 - Brown 15 - Yellow
8 - White 16 - White (high intensity)
To start this test, select 9. Press any key to display each screen.
On the last screen, you see this prompt:
Is the
display
correct ? (Y/N)
If all the colors are correct, select
Y
to end the test. If any color
is incorrect, 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, select
N
to display the error
message.
Sync Check
This test is provided for service purposes only. If you
accidentally select this option, press any key to end the test.
C-22 Performing System Diagnostics