Paper Lift/Remaining Paper Detection: Tray - Gestetner B070 Service Manual

PAPER FEED

Paper Lift/Remaining Paper Detection: Tray 1

The machine detects when the 1st tray has been placed in the machine by
monitoring the tray set signal through the connector.
[J]
[H]
[L]
[M]
[F]
[K]
When the machine detects the 1st paper tray, the right 1st tray paper sensor [N]
(under the tray) checks whether there is paper in the right tandem tray. When
paper is detected, the tray lift motor [A] rotates and the coupling gear [B] on the
tray lift motor engages the pin [C] of the lift shaft [D].
The tray wires [E] are fixed in the slots [F] at the ends of the tray support rods [G,
H]. When the tray lift motor rotates clockwise, the tray support rods and the tray
bottom plate [I] rise. The tray rises until stack pushes up the pick-up roller until the
tray lift sensor de-activates and switches off the tray lift motor.
As the actuator [K] on the right support rod [G] rises, it de-activates each of the 4
paper height sensors [J] to trigger 5 levels of paper remaining alerts on the
operation panel.
Paper Height Sensor
None
1
2
3
4
When the tray is removed, the coupling gear [B] separates from pin [C], so the tray
bottom plate descends. The tray descends until the actuator activates the lower
limit sensor [L]. The damper [M] provides resistance so the tray bottom plate
descends slowly.
B070/B071
CÓPIA NÃO CONTROLADA
[E]
[D]
[L] [G]
Remaining Paper
100% Bottom position, no sensors de-activated.
75%
50%
Each sensor de-activates as the actuator rises.
25%
Near End
Detected by the paper sensor [N] below the stack
Paper Out
when the last sheet feeds.
6-106
CÓPIA NÃO CONTROLADA
[E]
[C]
[I]
[N]
B070D710.WMF
Comment
[A]
[B]
SM