Ricoh Aficio MP C3001 Service Manual page 1501

2.6 JOGGER UNIT
The jogger is used in corner-staple mode and in booklet mode.
For each sheet of paper when it arrives in the staple tray, the following is done.
The jogger motor [A] drives the jogger fences [B].
The positioning roller solenoid moves the positioning roller [C] onto the top of the sheet.
Then the lower transport motor turns on and the positioning roller rotates to push the
sheet of paper against the stopper (there are two stoppers: stopper L or stopper S the
one that is used depends on the paper size, as we shall see later.)
The jogger HP sensor [D] detects when the jogger fences are at home position (away from
the stack).
The staple tray exit sensor [E] detects if a jam occurs when the machine feeds the stack out
at the bottom of the jogger tray.
SM 49
Jogger Unit
B793