Ricoh B064 Service Manual page 477

[A]
[J]
[B]
[F]
Paper remaining: The amount of paper remaining in the tray is detected by which
combination of the three paper height sensors [A] are actuated by the actuator on
the left rail as the bottom plate rises.
• With the actuator below paper height sensor 1 (the bottom sensor), no sensor is
actuated and the display indicates the tray is full.
• When the actuator passes paper height sensor, the display indicates 50% of the
paper supply remaining.
• When the actuator passes paper height sensor 2 (the middle sensor), the display
indicates 30% of the paper supply remaining.
• When the actuator passes paper height sensor 3 (the top sensor), the display
does not change. This prevents the signal from returning to the off state, which
would indicate 100% of the paper remaining (the same state as when the sensor
is below paper sensor 1.
Paper near-end: Detected when the actuator [B] on the right rail activates the
paper near end sensor [C]. When the actuator passes this sensor, the display
indicates 10% of the paper supply remaining.
Paper end: After the last sheet feeds, the right tray paper sensor [D] below the
bottom of the tray actuates and signals paper end.
When paper runs out in the right tray, the stack must be moved across from the left
tray. To do that, the tray must first be lowered. The 1st tray lift motor [E] reverses
until actuator [B] activates the right tray down sensor [F].
When removing the tray manually, if paper is still present, the tray lowers under its
own weight as follows:
• Coupling [G] separates from pin [H] ! Tray bottom plate [I] moves down.
• Damper [J] lets the tray bottom plate drop slowly.
SM
[C]
[I]
6-91
PAPER FEED
[E]
[G]
[H]
[D]
B064D620.WMF
B064/B065