Scantron OpScan 4ES Operator's Manual page 59

Operator's Guide
3.
Press the Press To Load button on the side of the
input tray and while holding it down, complete
steps 4 (optional), 5, and 6 in this procedure.
NOTE:
Depressing this lever allows the sheets you
load to slide as far up into the input tray area as
possible. This is important for proper feeding.
4.
(Optional) If you have a large number of sheets to
load, you may want to secure the Press To Load
button in the down position by pushing in the Tray
Lock while the button is depressed. To release the
lock after you have loaded sheets, depress the
Press To Load button once again and release it.
5.
Load the input tray by stacking all sheets the same
way as follows:
Chapter 3: Operating Your Scanner
Scanning Procedure
39