Ricoh D093 Service Manual page 58

Overview
When the upper output stackers are installed:
The bottom of the left output stacker [1] depresses paper exit selection switch [2] and keeps
it closed. This de-activates the paper junction gate solenoid [3].
The closed junction gate [4] guides paper to the top of the machine.
The lever [5] should be up.
For normal operation, the left upper output stacker must be installed, so the
operator has the option of selecting either "Upper" or "Lower" for paper exit.
D093/D094 2-16 SM