Canon Color imageCLASS MF9170c Service Manual page 6

Contents
Chapter 2 Basic Operation
2.1 Construction..................................................................................................................................................... 2- 1
2.1.1 Functional Configuration......................................................................................................................... 2- 1
2.1.2 Connecting the Main PCBs .................................................................................................................... 2- 2
2.2 Basic Sequence .............................................................................................................................................. 2- 3
2.2.1 Basic Sequence of Operation ................................................................................................................ 2- 3
2.2.2 Power-On Sequence ............................................................................................................................... 2- 4
Chapter 3 Main Controller
3.1 Overview/Configuration ................................................................................................................................. 3- 1
3.1.1 Overview ................................................................................................................................................... 3- 1
3.1.2 Configurations/functions ......................................................................................................................... 3- 2
3.2 Set-Up Sequence ........................................................................................................................................... 3- 4
3.2.1 Overview ................................................................................................................................................... 3- 4
3.2.2 Startup Sequence .................................................................................................................................... 3- 5
3.3 Image Processing ........................................................................................................................................... 3- 6
3.3.1 Overview of the Image Flow .................................................................................................................. 3- 6
3.3.2 Construction of the Image Processing Module ................................................................................... 3- 6
3.3.3 Reader Unit Input Image Processing.................................................................................................... 3- 7
3.3.4 Compression/ Extesion/ Editing Block.................................................................................................. 3- 7
3.3.5 Printer unit Output Image Processing .................................................................................................. 3- 8
3.4 Image Data Flow............................................................................................................................................. 3- 9
3.4.1 Flow of Image Data According to Copy Functions ............................................................................. 3- 9
3.4.2 Flow of Image Data for the SEND Function ...................................................................................... 3- 10
3.4.3 Flow of Image Data for the Fax Transmission .................................................................................. 3- 10
3.4.4 Flow of Image Data for the Fax Reception Function........................................................................ 3- 11
3.4.5 Flow of Image Data for the PDL Function.......................................................................................... 3- 11
3.5 Parts Replacement Procedure ................................................................................................................... 3- 12
3.5.1 Main Controller PCB .............................................................................................................................. 3- 12
3.5.1.1 Before Removing the Main Controller PCB ................................................................................ 3- 12
3.5.1.2 Removing the Main Controller PCB............................................................................................. 3- 12
3.5.1.3 Procedure after Replacing the Main Controller PCB ................................................................ 3- 12
Chapter 4 Original Exposure System
4.1 Basic Construction.......................................................................................................................................... 4- 1
4.1.1 Overview ................................................................................................................................................... 4- 1
4.1.2 Major Components .................................................................................................................................. 4- 1
4.2 Basic Sequence .............................................................................................................................................. 4- 3
4.2.1 Basic Sequence of Operation at Power-on ......................................................................................... 4- 3
4.2.2 Basic Sequence of Operation in Response to a Press on the Start Key (book) ........................... 4- 4
4.3 Various Control ............................................................................................................................................... 4- 5
4.3.1 Lamp Control............................................................................................................................................. 4- 5
4.3.1.1 Overview ............................................................................................................................................ 4- 5
4.3.2 Enlargement/Reduction........................................................................................................................... 4- 6
4.3.2.1 Overview ............................................................................................................................................ 4- 6
4.3.3 Detecting the Size of Originals............................................................................................................... 4- 6