Epson Apex 20020 - Manual (Page 167)

Once you confirm the DEVICE LIST, you can test only those
items. If you decide later that you need to add a device, you
must return to the OPERATION MENU and re-select System
diagnostics.
Modifying the DEVICE LIST
If an installed device is missing from the DEVICE LIST, it is
important that you add it to the list and test it carefully. In
response to this prompt:
Is the DEVICE LIST correct (Y/N)?
press N followed by Enter. You then see a new menu:
Modify DEVICE LIST
1 - Add devices
2
- Delete devices
0 - Exit
Enter selection number:
To add a device to the list, press 1 and then Enter. The
program displays a list of other devices that are not currently
included in the DEVICE LIST. You see a menu similar to this:
Additional DEVICE LIST
4 - Monochrome display adapter and CRT
7
- Math coprocessor (80287)
0 - Exit
Enter the number of the item to add:
Performing System Diagnostics C-3