Paper Lift; Tray Detection; Lift Mechanism - Gestetner A294 Service Manual

PAPER LIFT

2.3 PAPER LIFT

2.3.1 TRAY DETECTION

When the tray is placed in the machine, the way that the machine detects this
depends on the tray.
The upper tray and middle tray are detected when any one of the paper size switch
signals is low. The lower tray is detected when the switch 1 signal of the paper size
switch is low.

2.3.2 LIFT MECHANISM

B303D109.WMF
When the machine detects that the paper tray is set in the machine, the tray lift
motor [A] rotates and the coupling gear [B] on the tray lift motor engages the pin [C]
of the lift drive shaft [D]. The tray drive belts [E] are connected to the tray bottom
plate [F] and are driven by the tray lift motor via the lift drive shaft [D] and tray drive
pulleys [G]. When the lift motor turns counterclockwise, the tray bottom plate [F]
moves up. The tray goes up until the top of the paper stack pushes up the pick-up
roller and the lift sensor in the feed unit is activated.
When the actuator [H] on the rear end of the bottom plate activates the paper
height sensors [I], the remaining paper capacity is detected (4 levels).
When pulling out the tray, the coupling gear [B] separates from the pin [C], so that
the tray bottom plate moves downward. In the bottom tray, the damper [J] lets the
tray bottom plate drop slowly.
A294/A295
CÓPIA NÃO CONTROLADA
[E]
[H]
[J]
[I]
9-10
CÓPIA NÃO CONTROLADA
[F]
[D]
[G]
[E]
[C]
[A]
[B]
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SM