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COPYRIGHT
©
2001 CANON INC. 2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001
CONTENTS
P1
Contents
CHAPTER 1 INTRODUCTION
CHAPTER 2 SEQUENCE OF OPERATIONS
1 Safety..............................................1-1P
1.1 Safety of Laser Light ...............1-1P
1.2 CDRH Ordinances ...................1-1P
1.3 Handling the Laser System ......1-3P
1.4 Safety of Toner.........................1-4P
2 Image Formation System ...............1-5P
2.1 Outline .....................................1-5P
1 Basic Operations ............................2-1P
1.1 Functional Construction ..........2-1P
1.2 Outline for the Electrical Circuitry
.................................................2-2P
1.2.1 Outline ...............................2-2P
1.2.2 DC Controller PCB ...........2-2P
1.3 Basic Sequence of Operations
.................................................2-3P
1.3.1 Basic Sequence of Operations at
Power-On ...........................2-3P
1.4 Controlling the Main Motor (M2)
.................................................2-5P
1.4.1 Outline ...............................2-5P
1.5 Inputs to and Outputs from the Ma-
jor PCBs ...................................2-6P
1.5.1 Wiring Diagram of the Major
PCBs ..................................2-6P
CHAPTER 3 LASER EXPOSURE SYSTEM
1 Outline of Operations.....................3-1P
1.1 Outline .....................................3-1P
1.2 Sequence of Operations (laser expo-
sure system) .............................3-3P
2 Generating Sync Signals ................3-3P
2.1 Outline .....................................3-3P
2.2 Flow of Sync signals................3-4P
3 Laser Driver Circuit .......................3-5P
3.1 Controlling the Laser Unit .......3-5P
4 Controlling the Laser Scanner Motor
........................................................3-7P
4.1 Outline .....................................3-7P
5 Disassembly and Assembly............3-8P
5.1 Laser Scanner Assembly ..........3-9P
5.1.1Removing the Laser Unit .........3-9P
CHAPTER 4 IMAGE FORMATION SYSTEM
1 Outline of Processes .......................4-1P
1.1 Outline .....................................4-1P
1.2 Basic Sequence of Operations (im-
age formation system)..............4-3P
2 Controlling the Primary Charging
Roller Bias......................................4-4P
2.1 Outline .....................................4-4P
2.2 Turning On/Off the Bias ..........4-5P
2.2.1 DC Bias .............................4-5P