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HP LASERJET ENTERPRISE M855 - Page 243

HP LASERJET ENTERPRISE M855
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Figure 1-179 Sequence of stitching
Stitcher home position sensor
(front) (SW7)
Stitcher motor (front) (M7)
Stitcher motor (rear) (M6)
Stitcher home position
sensor (rear) (SW5)
No.1 paper sensor (PI18)
Alignment motor (M5)
Alignment Escape
Figure 1-180 Rotation of the cam
Cam
Mount
Booklet maker stack operation
Output bin operation
This accessory has an upper output bin (output-bin 1) and a lower output bin (output-bin 2).
The output-bin-1-shift motor (M107) and output-bin-2-shift motor (M108) move output-bin 1 and
output-bin 2 up and down independently.
The output-bin-1 paper sensor (PI111) and output-bin-2 paper sensor (PI112) detect paper
stacked on the output bin.
The output-bin-1 paper-surface sensor (PI141) and output-bin-2 paper-surface sensor (PI115)
detect the home positions of output-bin 1 and output-bin 2.
The home position is the top surface of the paper when paper is stacked on the output bin, or
the position where the edge of the output bin is detected when no paper is stacked.
When the power is turned on, the stacker controller PCA drives the output-bin-1-shift motor
(M107) and output-bin-2-shift motor (M108) to return the output bin to home position. If already
at home position, the output bin is moved from the home position and then returned. If both
output bins are at home position, this is performed for output-bin 1 and then for output-bin 2.
If the product specifies output-bin 2, the stacker controller PCA shifts the output bin so that
output-bin 2 is at the delivery port. When paper is stacked on the output bin, a prescribed
number of pulses drive the output-bin-1-shift motor (M107) or output-bin-2-shift motor (M108) to
lower the output bin. Then the output bin returns to home position to prepare for the next stack.
ENWW Booklet maker and booklet maker with hole punch 201

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