Details; Tray Lift - Ricoh B234 Service Manual

DETAILS

2. DETAILS

2.1 TRAY LIFT

[G]
[B]
When the tray lift switch is pressed, the lift motor [A] switches on and pushes the lift
plate [B] against the bottom of the feed tray until the top of the stack is at the
correct feed position.
NOTE: If there is paper in the bypass tray when the main machine has just been
switched on, the lift motor will turn on and lift the stack to the feed position.
As paper is fed, the pick-up roller [C] lowers until it activates the lift sensor which
switches on the lift motor again to raise the stack to the feed level again. ( 0)
As the bottom plate shaft rotates and raises the bottom plate, the actuator [D]
lowers and activates paper height sensor 1 [E] and then paper height sensor 2 [F]
as the bottom plate continues to rise. With the tray full, the actuator remains upright
and deactivates neither paper height sensor. During continuous feed, the actuator
rotates downward through three positions, deactivating the first sensor, then both
sensors, then only the second sensor. These states are used to report the amount
of paper on the operation panel.
SN1 SN2
OFF OFF
ON OFF
ON ON
OFF ON
After the last sheet feeds, the paper end sensor [G] below the feed tray detects
that the tray is empty.
NOTE: When you re-load the tray with paper, be sure to press the tray lift button to
raise the bottom of the tray so the stack is at the correct feed position.
B833
[D]
[C]
Paper Remaining Status
100% (Full)
90%
50%
25%
[E]
B833D901.WMF
12
[F]
[A]
SM