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If an error occurs during any of these tests, record the error code and
message, or print them out. Then contact your dealer or Epson for customer
service.
Color graphics adapter check
To check the color graphics adapter, press
1
and then
Enter.
The computer checks the video RAM (display memory) on the display
adapter by writing test data to memory, and then reading it back and com-
paring it to the written data. The computer also tests the video enable signal
of the display controller chip.
Attribute check
To check the display attributes of the color graphics adapter card, press
2 and
Enter.
Several messages appear showing examples of all the possible display
attributes and colors. Check the information on your screen, and respond to
the prompt:
Is the display correct (Y/N)?
Press Y and then
Enter
if the display is correct.
If the colors are not correct, adjust the controls on your display monitor.
If they are still incorrect, press
N
and
Enter.
Contact your dealer to verify any monitor problems.
Character set check
To check your 80-column character set, press
3
and
Enter.
The charac-
ter fonts that are included in the internal character generator display on
your screen. Compare your screen display to the following illustration.
4-12
Diagnostics