Epson 10020 - Manual (Page 163)

To perform the test multiple times, press 2 and Enter. You see
this prompt:
Terminate checking if an error
detected (Y/N)?
Press Y and Enter to terminate checking if the device
produces an error, or press N and Enter to repeat the test
regardless of an error. You see this prompt:
How many times (1-9999):
Type the number of times you wish to repeat the test, then press
Enter. The test for the device now starts.
Resuming From an Error
If an error occurs during a test, the test stops at that point, and
an error code and error message appear. If you want to record
the problem, you can print out the message on 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, press N and
Enter.
Before you request a printout, be sure your printer is turned on
and online, and the paper is installed correctly. Then press Y
and Enter. If the printer is not ready, the following message
and prompt appear:
Printer is not installed correctly.
Install correctly and enter Y, or
Enter N to cancel printing.
Correct the problem and press Y and Enter to continue
printing, or press N and Enter to cancel printing.
D-6 Performing System Diagnostics