Xerox ColorQube 9303 Series Service Manual Download

Page: 1780 / 1812

February 2013

8-86

ColorQube® 9303 Family

Principles of Operation

SH1 Priming Sensor

Priming of the staple head is the pre-forming of the first two staples in the staple stick. If the
staple head home sensor is low at machine initialization, the SH1 priming sensor (located
within the staple head) is checked for staple head primed (H) (high = primed). If the sensor is
high then the initialization is complete. If the staple head primed signal is low, the control logic
will cycle the staple head 1 motor until the SH1 priming sensor signal goes high.

SH1 Home Sensor

After the staple has been formed in the compiled set, the staple head cam continues to rotate
until it has made one complete revolution and the staple head home sensor, Q12-318 (located
within the staple head) has been actuated, sending a (H) signal to the control logic to stop the
staple head 1 motor at the home position.

SH Low Staples Sensor

The SH1 low staples sensor (located within the staple head) is used to detect the presence of
staples (and therefore a staple cartridge) in the compiler carriage stapler. The sensor signals
the control logic when the cartridge is missing or low on staples.

Tamping

The purpose of the tamping function is to align the sheets in the compiler carriage to eliminate
skew and offset. Tamping registers all sheets in the correct position, as a set, for correct sta-
pling.

The front tamper arm is driven by the front tamper motor, MOT12-226. The rear tamper arm is
driven by the rear tamper motor, MOT12-227.The tamper motors are mounted on the front and
rear frames of the compiler carriage and drive their respective tamper arms using a toothed
belt driven lead screw for each tamper.

Home Position

The tamper arms are initially at a home position that puts them outside of the paper path. The
home positions are detected by the front tamper home sensor, Q12-180 and the rear tamper
home sensor, Q12-181, which monitor flags located on the tamper arms. These two sensors
are bonded the compiler carriage frames. If a sensor failure occurs, a new compiler carriage
must be installed.

Tamp Position

Upon actuation of the compiler sensor by the first sheet of a set, the tamper arms are moved
from the home position to the ready position. The ready position is paper size dependent and
the information is obtained from the IME. When each sheet of the set is fully within the compil-
ing area, the tamper arms are moved to the tamp position and then back to the ready position
to wait for the next sheet. The tamper arms are moved back to the ready position at a slower
speed so that an over tamp buckle is avoided which could move sheets out of the registered
position.

Bin 1 Stacking

Bin 1 of the LCSS provides a platform to stack up to 2000 sheets. The bin 1 tray surface or the
top of the stack in bin 1, assists in the compiling mode by providing an extended surface to
support longer documents, e.g. SEF A4 and A3 (SEF 8.5 x 11 and 11 x 17 inch).

As the paper stack increases in the tray, the bin 1 elevator motor, MOT 12-241 lowers the tray
to the appropriate eject height to receive the set.

The bin 1 upper level sensor, Q12-188 measures the height of the stack in bin 1. This signal is
used by the LCSS PWB to determine when to lower bin 1 in steps to maintain the correct stack
height, with regard to the output from the compiler. The 90% full sensor, Q12-187 is used to
signal when bin 1 is 90% full, together with the bin 1 lower limit switch, S12-191 being made.
The control logic will allow 10% more set feeds prior to declaring a bin 1 full status to the IME.

Xerox ColorQube 9303 Series, Service Manual

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