Epson EQUITY 3865X/20 PLUS - Manual (Page 227)

You can specify that the test be performed one time only or any
number of times in the range from 1 to 9999. Running a test
multiple times is for reliability testing of essential functions only;
in most cases, running a test once is sufficient.
To perform the test once, select 1. The program may display a
submenu of more detailed tests for the device you are checking.
To perform the test multiple times, select 2. You see this
prompt:
Terminate checking if an error
detected ? (Y/N)
Select Y to terminate checking if the device produces an error,
or N to repeat the tests regardless of an error. You see this
prompt:
Repeat times (1-9999) ? 1
To perform the test once, press Enter.
If you wish to run the tests more than once, type the number of
times and press
Enter.
For some devices, the computer does not display a submenu of
tests to choose from. Instead, it performs all the tests that do not
require you to enter a response. If you chose to test the device
more than once, the computer runs all the tests and then
repeats
them in the same order.
You may see this message on the screen during the tests:
On errors, press any key to stop
If you see an error while one of the tests is running, press any key
to terminate the test.
Performing System Diagnostics C-7