Olivetti d-Color MF550 Theory Of Operation page 120

Theory of Operation Ver. 8.0 Jun. 2008
E. Tray lifting motion control
(1) Tray lifting motion
• The tray is hung with the wire connected to the front and the back.
• The wire is winded by the rotation of the lift-up motor, which lifts up the tray.
• When the tray is pulled out, the lift-up motor is disconnected from the hoisting axis, which
lifts down the tray due to its own weight.
Tray3 lift-up motor (M23)
Tray4 lift-up motor (M24)
(2) When tray is slid in
• While a tray is being closed, when the upper limit sensor of tray3 is unblocked or that of
tray4 is blocked, the lift up motor rotates and starts lifting up the tray.
• After the machine starts to lift up the tray, when the upper limit sensor of tray3 is blocked
or that of tray4 is unblocked, the lift up motor stops and finishes lifting up the tray.
• The lifting motion is controlled not to make more than two trays are lifted at the same
time.
Tray3 upper limit sensor (PS22)
Tray3,4 set detection
Tray3,4 upper limit sensor (PS22,PS27)
Tray3,4 Lift-up motor (M23,M24)
Y107522-3
Coupling
Hoisting axis
A00JT2C305AA
Tray4 upper limit sensor (PS27)
Tray set
Theory of Operation
16. Paper feed section
A00JT2C099DA
Lifting completed
Paper consumption
A00JT2E528DA
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