Lexmark CS963 User Manual page 120

Set up, install, and configure
3
Unpack the staple finisher, and then remove all the packing material.
4
Install the feed guide.
5
Remove the standard bin.
Note: Do not throw away the bin.
6
Before installing the option, place the exit bin flag into the closed position.
Note: When the option is removed, place the exit bin flag into the open position.
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