Epson 4500 - Manual (Page 38)

Testing the Printer
3.
4.
While holding down the LINE FEED button (draft mode) or FORM
FEED button (Letter Quality mode), turn on the printer. The printer
beeps several times and POWER and PAPER OUT lights come on.
Move the left edge guide so that it locks in place next to the guide
mark.
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Setting Up the Printer