Epson Equity 286 PLUS User Manual page 197

When you select a test category from the option line at the top
of the menu, you see a submenu of the available diagnostic tests.
For example, the submenu for the System board category appears
when you first see the main menu because the System board
option is selected.
The Run time parameters window, near the bottom of the
display, lets you specify how you want to run the test(s).
The Help window describes how to use these keys to make menu
selections and run diagnostic tests:
A short message describing each test appears at the bottom of
the screen.
Performing System Diagnostics
C-3