Canon ImageRUNNER 1022iF Service Manual page 8

Contents
3.1.2 Functional Block Diagram ........................................................................................................................................3- 2
3.1.3 Image Processor PCB .............................................................................................................................................3- 2
3.1.4 DC Controller PCB...................................................................................................................................................3- 3
3.1.5 Analog Processor PCB ............................................................................................................................................3- 4
3.1.6 Power Supply PCB ..................................................................................................................................................3- 4
3.1.7 Relay PCB ...............................................................................................................................................................3- 4
3.1.8 Control Panel PCB...................................................................................................................................................3- 4
3.1.9 NCU PCB (if equipped with fax functions) ...............................................................................................................3- 4
3.1.10 Network PCB (if equipped with network functions) ................................................................................................3- 4
3.1.11 Modular Jack PCB (if equipped with fax functions)................................................................................................3- 4
3.1.12 Modem PCB (if equipped with fax functions) .........................................................................................................3- 4
3.2 Basic Sequence ......................................................................................................................................... 3- 6
3.2.1 Basic Sequence .......................................................................................................................................................3- 6
Chapter 4 Original Exposure System
4.1 Construction ............................................................................................................................................... 4- 1
4.1.1 Specifications, Control Methods, and Functions......................................................................................................4- 1
4.1.2 Major Components...................................................................................................................................................4- 1
4.2 Basic Sequence ......................................................................................................................................... 4- 2
4.2.1 Basic Sequence at Power-on...................................................................................................................................4- 2
4.2.2 Basic Sequence after Depression of Start Key (Book mode, One Sheet of original) ..............................................4- 2
4.2.3 Basic Sequence after Depression of Start Key (ADF Mode, One Sheet of Original)...............................................4- 3
4.3 Various Control........................................................................................................................................... 4- 3
4.3.1 Enlargement/Reduction ...........................................................................................................................................4- 3
4.3.1.1 Magnification Change in Vertical Scan Direction ..................................................................................................................... 4- 3
4.3.1.2 Magnification Change in Horizontal Scan Direction................................................................................................................. 4- 3
4.3.2 Dirt Sensor Control ..................................................................................................................................................4- 4
4.3.2.1 Outline...................................................................................................................................................................................... 4- 4
4.4 Parts Replacement Procedure ................................................................................................................... 4- 6
4.4.1 Copyboard glass ......................................................................................................................................................4- 6
4.4.1.1 Removing the Copyboard Glass .............................................................................................................................................. 4- 6
4.4.1.2 Procedure after Replacing the Copyboard Glass (equipped with SEND functions) ................................................................ 4- 6
4.4.2 Reader Controller PCB ............................................................................................................................................4- 6
4.4.2.1 Removing the Analog Processor PCB ..................................................................................................................................... 4- 6
4.4.3 Scanner Motor .........................................................................................................................................................4- 6
4.4.3.1 Removing the Reader Motor.................................................................................................................................................... 4- 6
4.4.4 Contact sensor.........................................................................................................................................................4- 6
4.4.4.1 Removing the Contact Sensor ................................................................................................................................................. 4- 6
4.4.4.2 Procedure after Replacing the CS ........................................................................................................................................... 4- 7
4.4.5 Contact Sensor HP Sensor......................................................................................................................................4- 7
4.4.5.1 Removing the Contact Sensor Home Position Sensor ............................................................................................................ 4- 7
Chapter 5 Laser Exposure
5.1 Construction ............................................................................................................................................... 5- 1
5.1.1 Specifications and Control Mechanism....................................................................................................................5- 1
5.1.2 Main Components....................................................................................................................................................5- 2
5.2 Parts Replacement Procedure ................................................................................................................... 5- 3
5.2.1 Laser Scanner Unit ..................................................................................................................................................5- 3
5.2.1.1 Removing the Laser Scanner Unit .......................................................................................................................................... 5- 3
Chapter 6 Image Formation
6.1 Construction ............................................................................................................................................... 6- 1
6.1.1 Specifications and Control Mechanism....................................................................................................................6- 1
6.1.2 Outline......................................................................................................................................................................6- 2