Epson ActionPrinter 4000 User Manual page 32

Testing the Printer
6. Next, slide a sheet of paper down between the edge guides until
it meets resistance. After about two seconds, the printer loads the
paper automatically and then starts the self test.
Note: If the platen turns without loading the paper, press the
ON LINE button to take the printer off line. Then remove the
paper and reinsert it more firmly.
A list of DIP switch settings is printed first, followed by a series
of characters. The self test continues until the paper runs out or
until you press the ON LINE button.
1-18 Setting Up the Printer