Operation; Tray Lift Control - Konica Minolta bizhub c650 Service Manual

Theory of Operation Ver. 5.0 May 2008
6.2

Operation

6.2.1

Tray lift control

A. Tray lift operation
• The worm gear installed in the shaft of the tray1 lift motor [6] winds up the lift wire.
• It lifts up or down the finishing tray1 [9] depending on the winding direction.
• Rotating the lift pulley /Lw clockwise and counterclockwise in view of front, the finishing
tray1 is lifted up and down respectively.
[9]
[8]
[7]
[1] stapler paper exit upper limit sensor (PS7)
[2] Tray1 upper limit sensor (PS2)
[3] Counter reset sensor (PS15)
[4] Tray1 lower limit sensor (PS3)
[5] Timing belt
B. Paper detection
• The tray1 upper limit sensor [2] and the stapler paper exit upper limit sensor [1] keep the
specified distance between the upper surface of the paper exited to the finishing tray1
(the upper surface of the finishing tray1 if there is no exited paper) and the paper exit
opening to eliminate the misalignment of the exited paper.
• During the consecutive printing operation, FS counts the number of exited paper and
stops the printing when it reaches the maximum capacity.
• If the exited paper is ejected during the printing operation, the tray moves up and the
counter reset sensor [3] turns ON and resets the counter. It makes possible to exit paper
with no limitation.
• The tray1 lower limit sensor [4] detects the lower limit of the tray.
• During the intermittent printing operation, The tray1 lower limit sensor controls the
capacity of the paper exit because the counter does not integrate the total number of
exited paper.
6. Finishing tray1 section
[1]
[2]
[3]
[4]
[5]
[6] Tray1 lift motor (M3)
[7] Lift pulley /Lw
[8] Lift pulley /Up
[9] Finishing tray1
[6]
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