Epson Apex 20020 - Manual (Page 180)

After checking the characters, respond to the prompt:
Is the display correct (Y/N) ?
If the characters displayed match the illustration, press Y and
then
Enter.
If they do not match, press
N
and
Enter
to display
the error message.
40-column Character Set Check
To check your 40-column character set, press 4 and then
Enter.
The character fonts that are included in the internal
character generator are displayed. Check the characters
displayed on your screen against this illustration:
After checking the characters, respond to the prompt:
Is the display correct (Y/N)?
If the characters displayed match the illustration, press Y and
Enter.
If they do not match the illustration, press
N
and
Enter
to display the error message.