Canon    LBP3310, Service Manual

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Contents
Contents
Chapter 1
PRODUCT DESCRIPTION
1.1 Features .....................................................................................................................................................1- 1
1.1.1
Feature .................................................................................................................................................................... 1- 1
1.2 System Construction ..................................................................................................................................1- 1
1.2.1
System Construction ............................................................................................................................................... 1- 1
1.2.2
System Construction ............................................................................................................................................... 1- 1
1.3 Product Specifications ................................................................................................................................1- 1
1.3.1
Product Specifications ............................................................................................................................................. 1- 1
1.3.2 Product Specifications ............................................................................................................................................. 1- 2
1.4 Name of Parts.............................................................................................................................................1- 3
1.4.1 External View........................................................................................................................................................... 1- 3
1.4.2 External View........................................................................................................................................................... 1- 4
1.4.3
Cross Sectional Views ............................................................................................................................................. 1- 5
1.5
Using the Machine ......................................................................................................................................1- 6
1.5.1
Control Panel........................................................................................................................................................... 1- 6
1.5.2
Control Panel........................................................................................................................................................... 1- 6
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 Operation Sequence...................................................................................................................................... 2- 1
2.2.2 Power-on sequence................................................................................................................................................. 2- 1
2.3 LASER EXPOSURE SYSTEM ...................................................................................................................2- 2
2.3.1 Overview/Configuration ........................................................................................................................................... 2- 2
2.3.1.1 Outline...................................................................................................................................................................................... 2- 2
2.3.1.2
Laser Control Circuit ................................................................................................................................................................ 2- 3
2.3.2 Controlling the Laser Activation Timing ................................................................................................................... 2- 5
2.3.2.1 Laser emission control ............................................................................................................................................................. 2- 5
2.3.2.2 Horizontal synchronous control................................................................................................................................................ 2- 5
2.3.3
Laser Control ........................................................................................................................................................... 2- 5
2.3.3.1 Automatic power control (APC)................................................................................................................................................ 2- 5
2.3.3.2
Image masking control ............................................................................................................................................................. 2- 5
2.3.4 Laser Scanner Motor Control .................................................................................................................................. 2- 6
2.3.4.1 Outline...................................................................................................................................................................................... 2- 6
2.3.4.2 Scanner motor speed control................................................................................................................................................... 2- 7
2.3.4.3
Scanner motor failure detection ............................................................................................................................................... 2- 7
2.4
IMAGE FORMATION SYSTEM..................................................................................................................2- 7
2.4.1 Overview/Configuration ........................................................................................................................................... 2- 7
2.4.1.1 Outline...................................................................................................................................................................................... 2- 7
2.4.1.2
Print Process............................................................................................................................................................................ 2- 8
2.4.1.3 Electrostatic latent image formation block ............................................................................................................................... 2- 9
2.4.1.4 Development block .................................................................................................................................................................. 2- 9
2.4.1.5
Transfer block ........................................................................................................................................................................ 2- 10
2.4.1.6 Fixing block ............................................................................................................................................................................ 2- 11
2.4.1.7
Photosensitive drum cleaning block....................................................................................................................................... 2- 11
2.4.2
High-Voltage Control ............................................................................................................................................. 2- 12
2.4.2.1
Outline.................................................................................................................................................................................... 2- 12
2.4.2.2 Primary charging bias generation .......................................................................................................................................... 2- 12
2.4.2.3 Developing bias generation ................................................................................................................................................... 2- 12
2.4.2.4 Transfer charging bias generation ......................................................................................................................................... 2- 13