Xerox ColorQube 9303 Series Service Manual page 1747

• 8.5x14 inch, short edge feed
• A3, short edge feed
• 11 x 17 inch, short edge feed
When one of these kits is installed, the door is not present and the door switch is replaced by a
manual tray loading switch.
Tray 5 contains the following main elements:
• Paper tray
• Semi-active retard feed head, (SAR)
• Paper transport system
• Tray elevator
• Docking and interlocks
• Component location
Machine Interface
The serial interface is a hi-speed communication interface for transferring low-level data. This
is done in the form of sensor data from the tray 5 hardware to the IME and control data from
the IME to the tray 5 hardware.
The machine interface comprises of the tray 5 control PWB, the communication cable, a bulk-
head connector, a harness and the host controller PWB.
The communication cable also provides +5V and +24V to the tray 5 components.
If any communications data lines become open circuit or short circuit, a communications fault
is indicated by the IME.
The software is capable of handling all stock formats, and the GUI setting should match the
tray setting. As there is no paper size detection on tray 5, and therefore no size information is
fed to the machine, failure to set the GUI size to match the tray 5 stock may result in faults such
as: jams, image quality faults, finisher tamping errors, etc.
Interlock
Interlock switches in the tray 5 module interrupt the +24V power when the front door interlock
or the docking interlock are opened for jam clearance or service. The interlocks must be closed
to enable initialization.
Paper Path
Figure 2 shows the paper path between tray 5 and the IME.
ColorQube® 9303 Family
The nudger roll and the feed rolls are driven by the tray 5 feed motor, and feed the sheet to the
feed rolls, (SAR feeder). The feed rolls transport the sheet past the feed sensor to the tray 5
transport rolls. Because of the inherent slippage in SAR feed heads, the paper does not arrive
at a well defined time. The transport rolls, which are not SAR, are driven by the tray 5 transport
motor, whose speed is controlled by the software. The time for the sheet to reach the paper
feed sensor is measured, and the speed of the transport motor is adjusted to ensure the lead-
ing edge of the sheet arrives at the IME at the correct time.
Semi-Active Retard Feed Head (SAR)
This consists of a nudger roll, mounted on a pivoting arm, as shown in
February 2013
8-53
Bypass (multi sheet inserter)
Transport rolls
Feed sensor
Nudger and feed rolls
Figure 2 Paper path
Figure
Principles of Operation
3.