500-sheet paper feeder cassette pickup
The paper feeder picks up one sheet of paper from the cassette.
Figure 1-44
500-sheet paper feeder pickup and feed cassette pickup
M1
SL1
PF controller
PF cassette pickup motor
1. Cassette pickup cam rotates
2. Cassette pickup arm lowers
3. PF cassette pickup roller
picks up the paper
3
1
2
PF cassette feed roller
Cassette pickup arm
PF cassette
pickup solenoid
PF cassette pickup roller
Lifting plate
Cassette pickup cam
PF cassette separation roller
The operational sequence of the cassette pickup is as follows:
1.
The paper feeder controller rotates the PF cassette pickup motor when it receives a print command
from the formatter.
2.
The PF cassette pickup roller, PF cassette feed roller, and PF cassette separation roller rotate.
3.
The PF cassette pickup solenoid is driven at a specified timing.
4.
The cassette pickup cam rotates.
5.
The cassette pickup arm lowers and the PF cassette pickup roller picks up the top paper.
6.
The PF cassette separation roller removes any multiple-fed sheets.
7.
One sheet of paper is fed into the product.
500-sheet paper feeder cassette media-size detection and cassette-presence
detection
The paper feeder controller determines the size of paper loaded in the cassette and also whether the
cassette is installed in the paper feeder by monitoring the PF cassette media-width switch and the PF
cassette media-end switch.
The PF cassette media-width switch and the PF cassette media-end switch contain three sub-switches
each. The paper feeder controller detects the size of paper and the presence of the cassette according
to the combination of the sub-switches, and then notifies the formatter.
60
Chapter 1 Theory of operation
ENWW
Summary of Contents for LASERJET ENTERPRISE MFP M725dn
Page 1: ...LASERJET ENTERPRISE MFP M725 Troubleshooting Manual M725z M725dn M725f M725z ...
Page 2: ......
Page 3: ...HP LaserJet Enterprise MFP M725 Troubleshooting Manual ...
Page 6: ...iv Conventions used in this guide ENWW ...
Page 32: ...xxx ENWW ...
Page 142: ...110 Chapter 1 Theory of operation ENWW ...
Page 457: ...4 Close the fuser jam access cover 5 Close the fuser door ENWW Clear jams 425 ...
Page 475: ...1 Lift the document feeder latch 2 Open the document feeder cover ENWW Clean the product 443 ...
Page 516: ...484 Appendix A Service and support ENWW ...
Page 545: ......
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