Epson X-PRF 1000 Owner's Manual page 17

PriorityFax 1000 Manual
Place the fax machine at the edge of the table and locate the two
notches on the front underside of the fax machine.
Holding the output tray base level, press the tabs extending from
the output tray base into the notches on the front of the fax
machine, as shown in the following illustration.
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