2-1-7
2-1-4 Optical section
(1) Laser scanner section
The charged surface of the drum is then scanned by the laser beam from the laser scanner unit. The laser
beam is dispersed as the polygon motor (PM) revolves to reflect the laser beam over the drum. Various lenses
and mirror are housed in the laser scanner unit, adjust the diameter of the laser beam, and focalize it at the
drum surface.
Figure 2-1-13 Laser scanner unit (LSU)
Figure 2-1-14 Laser scanner unit block diagram
1
2
3
4
5
6
1. Polygon motor (PM)
2. f
θ
main lens
3. Direction change mirrer
4. LSU dust shield glass
5. LSU base
6. LSU cover
YC15-3
YC15-4
YC15-5
YC16-2
YC16-3
YC16-4
YC16-5
YC16-7
PLGDRN
PLGRDYN
POLCLK
VDATA1P
VDATA1N
VDATA2P
VDATA2N
SAMPLEN2
YC16-6
YC2-2
PDPWB
SAMPLEN1
PDN
3
2
PM
1
APCPWB
EPWB
Photo
sensor
Laser
diode
Drum
Laser light
YC16-8
OUTPEN
YC16-9
VCONT1
YC16-10
VCONT2
Summary of Contents for PG L2555
Page 1: ...SERVICE MANUAL PG L2555 PG L2550 PG L2545 PF 320 PF 3100...
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Page 109: ...1 5 2 Figure 1 5 2...
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Page 199: ...Installation Guide 500 sheets paper feeder Installation Guide...
Page 201: ...Printed in China 303NY5631002 Rev 1 2012 8 G G G G G G...
Page 202: ...2000 sheets bulk feeder Installation Guide...
Page 204: ...Printed in China 303KF5632002 Rev 1 2012 7 1 2 3 4 1 2 3 1mm PF 315...
Page 205: ...SSD HD 6 HD 7 Installation Guide...
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Page 208: ...IEEE1284 Interface Installation Guide...
Page 211: ...Network interface Installation Guide...
Page 214: ......
Page 215: ...OS...
Page 216: ...Wireless LAN interface Installation Guide...
Page 219: ...SERVICE MANUAL Published in August 2012 843NY110 3NYSM060 First Edition PF 320...
Page 224: ...1 1 3 1 1 3 Machine cross section Figure 1 1 2 Machine cross section Paper path...
Page 249: ...SERVICE MANUAL Published in August 2016 843S3110 3S3SM060 First edition PF 3100...
Page 252: ...2 4 Appendixes 2 4 1 Wiring diagram 2 4 1...
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