Epson I+ - Manual (Page 111)

Screen paging check
To check the screen paging of your monitor, press 7 and Enter.
The video RAM on the color graphics adapter is divided into eight
independent display pages. This test checks the eight pages by first filling all
eight with a number corresponding to the page, and then displaying each
page in turn. You see this pattern for screen 0:
When you have examined this screen, press any key to display the next page.
The eight display pages, numbered 0 to 7 , are displayed sequentially.
After the eighth page is displayed, you see the prompt:
Is the display correct (Y/N)?
If all eight pages are correct, press Y
and
Enter. If any page is filled with an
incorrect number, press N and Enter to display the error message.
Light pen check
To check the function of a light pen connected to the color graphics
adapter card, press 8 and then Enter.
This test checks that a light pen connected to the color graphics adapter
is performing accurately. When you select this check, you see these prompts:
Enter Y to start light pen check.
Enter N to return to the menu.
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