Ricoh D131 Service Manual page 1144

[A]
Pressing the tray down button [A] reverses the rotation of the tray motor [B] and
lowers the tray [C].
The tray lowers until the stack sensor [D] detects the top of the stack and stops the
tray motor.
• This mechanism lowers the tray by 5 cm, which gives the user enough space to
add 500 sheets of paper.
• If the down switch is then pressed again, the bottom plate moves down once
again by 5 cm. This allows the customer to replenish paper in convenient
amounts and at the same position.
A lower limit sensor [E] (triggered by an actuator on the bottom of the tray) is also
provided to stop the tray motor if the stack sensor should fail.
Summary
The tray raises when:
• The main power switch is turned on
• When the lift sensor switches on during copying
• The top cover is closed and the lift sensor switches on
The tray lowers when:
• The tray down button is pressed.
• The paper end sensor signals that there is no paper in the tray.
SM
[C]
[D]
[E]
B473D108.WMF
13
PAPER LIFT
[B]
B473/D613