Table Of Contents - Canon LBP5050 Series Service Manual

Lbp5050 series

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Service manual (104 pages)

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Table of Contents

Contents

Chapter 1 PRODUCT DESCRIPTION

1.1 Features .....................................................................................................................................................1- 1

1.1.1 Feature .................................................................................................................................................................... 1- 1

1.2 Product Specifications ................................................................................................................................1- 1

1.2.1 Product Specifications ............................................................................................................................................. 1- 1

1.3 Detailed Specifications ...............................................................................................................................1- 2

1.3.1 Print Speed.............................................................................................................................................................. 1- 2

1.4 Name of Parts.............................................................................................................................................1- 3

1.4.1 External View........................................................................................................................................................... 1- 3

1.4.2 Cross Sectional View............................................................................................................................................... 1- 4

1.5 Using the Machine ......................................................................................................................................1- 5

1.5.1 Control Panel........................................................................................................................................................... 1- 5

1.6 Safety .........................................................................................................................................................1- 6

1.6.1 Safety of the Laser Light.......................................................................................................................................... 1- 6

1.6.2 CDRH Regulation ................................................................................................................................................... 1- 6

1.6.3 Handling the Laser Unit ........................................................................................................................................... 1- 6

1.6.4 Points to note at disassembly/installation procedure............................................................................................... 1- 7

Chapter 2 TECHNICAL REFERENCE

2.1 Functional Configuration.............................................................................................................................2- 1

2.1.1 Outline ..................................................................................................................................................................... 2- 1

2.2 Basic Sequense..........................................................................................................................................2- 1

2.2.1 Basic Sequence of Operation.................................................................................................................................. 2- 1

2.3 LASER EXPOSURE SYSTEM ...................................................................................................................2- 2

2.3.1 Overview/Configuration ........................................................................................................................................... 2- 2

2.3.1.1 Outline...................................................................................................................................................................................... 2- 2

2.3.2 Laser Scanner Motor Control .................................................................................................................................. 2- 2

2.3.2.1 Fault Detection......................................................................................................................................................................... 2- 2

2.4 IMAGE FORMATION SYSTEM..................................................................................................................2- 3

2.4.1 Overview/Configuration ........................................................................................................................................... 2- 3

2.4.1.1 Outline...................................................................................................................................................................................... 2- 3

2.4.1.2 Image-formation Process......................................................................................................................................................... 2- 3

2.4.1.3 Latent image formation block................................................................................................................................................... 2- 4

2.4.1.4 Development block .................................................................................................................................................................. 2- 4

2.4.1.5 Transfer block .......................................................................................................................................................................... 2- 5

2.4.1.6 Fixing block .............................................................................................................................................................................. 2- 6

2.4.1.7 ITB cleaning block.................................................................................................................................................................... 2- 6

2.4.1.8 Photosensitive drum cleaning block......................................................................................................................................... 2- 7

2.4.2 High-Voltage Control ............................................................................................................................................... 2- 7

2.4.2.1 Outline...................................................................................................................................................................................... 2- 7

2.4.3 Image Stabilizaton Control ...................................................................................................................................... 2- 8

2.4.3.1 Overview of the Image Stabilization Control Mechanism......................................................................................................... 2- 8

2.4.3.2 Image density correction control (D-max control) .................................................................................................................... 2- 8

2.4.3.3 Image gradation correction control (D-half control).................................................................................................................. 2- 9

2.4.3.4 Color displacement correction control...................................................................................................................................... 2- 9

2.4.4 Toner Cartridge ....................................................................................................................................................... 2- 9

2.4.4.1 Developing roller engagement/disengagement control............................................................................................................ 2- 9

2.4.5 Transfer Unit............................................................................................................................................................ 2- 9

2.4.5.1 Pad transfer ............................................................................................................................................................................. 2- 9

2.5 Pickup/Feeding/Delivery System ..............................................................................................................2- 10

Contents