Ricoh SP 8400DN Field Service Manual page 1424

7.Detailed Descriptions
2. The reverse motor switches ON (CCW).
3. Before the leading edge of the paper reaches the junction gate [A], the junction gate moves in the reverse
tray/1 bin unit direction.
* If the junction gate is in the reverse tray/1 bin unit direction, the junction gate is not changed over.
4. After the trailing edge of the paper has left the fusing exit sensor [B], the exit junction solenoid switches
OFF.
5. When the trailing edge of the paper leaves the reverse roller [C], the reverse motor switches OFF.
Paper Exit Full, Jam Detection, Open/close detection
The paper exit full sensor detects paper exit jam.
When outputs push up the paper exit full feeler, the paper exit full sensor detects that standard output tray is full of
outputs and a jam message is displayed after a job end.
Paper exit sensor
When a sheet of paper stays in the paper exit unit, the paper exit sensor detects the paper jam and a jam message is
displayed.
Reverse cover open/close sensor
The reverse cover open/close sensor detects opening and closing of the reverse cover.
Paper Path and Sensor Locations
686