Xerox ColorQube 9303 Series, Руководство по обслуживанию

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February 2013
8-55 ColorQube® 9303 Family
Principles of Operation
The safety limit switches are:
• The tray down limit switch
• The tray upper limit switch
The down limit switch breaks the +24V supply to the elevator motor in the down direction only.
The upper limit switch breaks the +24V supply to the elevator motor in the up direction only.
This allows the tray to recover its position, while preventing damage that would occur through
further movement in the wrong direction.
The limit switches are connected to the tray 5 control PWB motor drive circuitry, rather than the
sensing circuitry. Therefore, if one of the limit switches is actuated, the elevator movement is
stopped, the lack of movement is detected by the software and a fault condition is declared
Component Location
Table 1 lists the active components of tray 5.
Refer to Figure 4 for the location of components motors and sensors.
Figure 4 Component location
Table 1 Active components
Name Function
Tray 5 feed sensor Detects the leading edge and trailing edge of the paper
Tray 5 empty sensor Detects paper present in the tray
Stack height sensor Detects the tray at the feed position
Stack down sensor Detects the tray in the fully lowered position
Elevator motor encoder
sensor Detects teeth on the vertical encoder, used to determine
stack height
Tray 5 docking switch Detects tray 5 in the docked position
Tray 5 door closed switch Detects the tray 5 door open or closed
Tray 5 upper limit switch Cuts the +24V to stop tray when moving to the up position
Tray 5 down limit switch Cuts +24V to stop tray when moving in the down direction
Tray 5 transport motor Stepper motor feeding paper out of tray 5
Tray 5 feed motor Stepper motor to separate sheets and move the paper to
the transport rolls
Tray 5 elevator motor Moves the tray up and down
Tray 5 control PWB Controls the operation of tray 5
Stack down sensor
Tray 5 feed sensor
Tray 5 empty sensor
Stack height sensor
Tray 5 feed motor
Upper limit switch
Tray 5 transport
motor
Tray 5 control PWB
Tray 5 elevator motor and
encoder sensor
Tray 5 docking
switch