Ricoh SP 8400DN Field Service Manual page 1938

2. Detailed Descriptions
Shift tray full detection
Small size (Smaller than A4 SEF, LT LEF)
When the shift tray descends and the actuator [A] under the shift tray switches the lower limit sensor
(lower) [B] OFF (blocked), shift tray "Full" is detected.
Large size (Larger than B4, LG)
When the shift tray descends and the actuator [A] under the shift tray switches the lower limit sensor
(upper) [C] OFF (blocked), shift tray "Full" is detected.
Shift mechanism
The paper is shifted from side to side by the shift roller in the transport path.
The paper exit guide plate floats up from the paper exit roller, and waits for the paper. After the shift
paper exit sensor [A] switches ON, the paper exit guide plate is closed, and after the paper is ejected to
the tray, the shift roller returns to the home position (center).
This operation is performed for every sheet, and when the shift direction changes (this happens when a
new set of prints is fed out), the shift roller shifts in the opposite direction.
The shift roller [C] is moved to left and right by the shift motor [B].
The shift roller HP sensor [D] detects the home position of the shift roller.
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