Epson 486SX - Manual (Page 192)

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.
Resuming From an Error
If an error occurs during a test, the test stops at that point, and
an error message appears. If you want to record the problem,
you can print the message using your printer. You see this
prompt:
Do you want a printout of the error
message(s) ? (Y/N)
To continue without printing the error message, select N.
Before you request a printout, be sure your printer is ready and
contains paper. Then select
Y
.
If the printer is not ready, the
following message and prompt appear:
Printer is not installed correctly.
Install
correctly before entering.
Continue ? (Y/N)
Correct the problem and select
Y
to continue printing, or select
N
to cancel printing.
Performing System Diagnostics C-7