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HP LaserJet 9000dn Service Manual: Main Modules; Figure 44. Stapler/stacker Main Modules

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Main modules

The 3000-sheet stapler/stacker is made up of the following main modules:
l
Face-up bin—This bin will collect the documents face up, with the printed information toward the
user. Finished documents are not routed to this bin, yet the bin does give support to sheets being
flipped to the face-down bin. This face-up bin has a capacity of 125 sheets of media (75 g/m
20 lb).
l
Face-down (stacker) bin—Collated and stapled jobs will be routed to the face-down (stacker) bin.
The bin has a capacity of 3000 sheets (75 g/m
(75 g/m
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Accumulator—The accumulator collects the sheets in the accumulator bed and registers a whole
job or copy. Additionally, the accumulator can transport the job to the stapler module when a
stapling option is desired and offset print jobs. After finishing, the accumulator routes the print job
to the face-down bin.
l
Stack holder—The stack holder "holds" the sheets that are lying in the face-down bin.
l
Flipper—The flipper module can flip sheets of paper from a face-up position to a face-down
position. This function is necessary to accumulate the job properly and allow stapling.
l
Path—The path module routes the print job after the media leaves the flipper module provided
that the job is flipped face-down. If the media is face-up, the print job will be routed directly from
the flipper module to the face-up bin.
l
Stapler and carriage—This module provides for the stapling of a print job. The stapler is mounted
in a carriage that moves from side-to-side. The side-to-side motion allows for stapling in various
positions on the edge of the print job in the accumulator.
l
Controller board—The controller board printed circuit assembly (PCB) controls the entire unit.
All module cables of the stapler/stacker are connected to the controller board.
l
Power supply—This is the main power supply for the device. The power supply is universal,
which means that it can work from 220 VAC down to 100 VAC.
Face-up bin
Face-down or
stacker bin
Accumulator
Figure 44.
Stapler/stacker main modules
C8519-90912
2
, 20 lb) of ledger/A3 paper.
2
, 20 lb) of letter/A4 paper or 1500 sheets
Flipper
Media path
Stapler cartridge
PCB
Power supply
Optional 3000-sheet stapler/stacker 107
2
,

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