Epson 4500 - Manual (Page 148)

The Cut Sheet Feeder
7. Push the paper set levers back until they click into place and clamp
the paper against the guide rollers.
Testing the Printer in the Cut Sheet Feeder Mode
When you perform the cut sheet feeder self test, the printer counts the
number of lines on the page. As shown on the following page, the
number of lines counted is printed out at the bottom of the first test
page. This number is the default page-length setting. This setting,
however, can be overridden by software commands.
Running the self test is the same as when the cut sheet feeder mode is
off. The steps below are for a self test in draft mode.
WARNING: Run the self test using 14.3 inch wide (364mm)
paper.
5-10 Using the Printer Options