Canon iR6570 series, Руководство по обслуживанию

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Contents
4.2 Construction of the Electrical Circuitry........................................................................................................4- 2
4.2.1 Main Controller PCB................................................................................................................................................ 4- 2
4.2.2 HDD......................................................................................................................................................................... 4- 2
4.3 Start-Up Sequence .....................................................................................................................................4- 5
4.3.1 Overview.................................................................................................................................................................. 4- 5
4.3.2 Start-Up Sequence .................................................................................................................................................. 4- 5
4.4 Shut-Down Sequence.................................................................................................................................4- 8
4.4.1 Overview.................................................................................................................................................................. 4- 8
4.4.2
Flow of Operation .................................................................................................................................................... 4- 8
4.5
Image Processing .......................................................................................................................................4- 9
4.5.1
Overview of the Image Flow .................................................................................................................................... 4- 9
4.5.2 Construction of the Image Processing Module........................................................................................................ 4- 9
4.5.3 Reader Unit Input Image Processing..................................................................................................................... 4- 10
4.5.4 Compression/ Extension/ Editing Block................................................................................................................ 4- 11
4.5.5 Printer unit Output Image Processing.................................................................................................................... 4- 11
4.6
Flow of Image Data ..................................................................................................................................4- 12
4.6.1 Flow of Image Data According to Copy Functions ................................................................................................ 4- 12
4.6.2
Flow of Image Data for the Box Function .............................................................................................................. 4- 12
4.6.3 Flow of Image Data for the SEND Function .......................................................................................................... 4- 13
4.6.4 Flow of Image Data for the Fax Transmission....................................................................................................... 4- 13
4.6.5 Flow of Image Data for the Fax Reception Function ............................................................................................. 4- 14
4.6.6 Flow of Image Data for the PDL Function ............................................................................................................. 4- 15
4.7
Parts Replacement Procedure .................................................................................................................4- 16
4.7.1 Main Controller Box ............................................................................................................................................... 4- 16
4.7.1.1 Removing the Rear Cover (upper)......................................................................................................................................... 4- 16
4.7.1.2 Removing the Main Controller Box ........................................................................................................................................ 4- 16
4.7.2 Main Controller PCB.............................................................................................................................................. 4- 17
4.7.2.1 Removing the Main Controller PCB ....................................................................................................................................... 4- 17
4.7.2.2 After Replacing the Main Controller PCB............................................................................................................................... 4- 18
4.7.3 SDRAM.................................................................................................................................................................. 4- 18
4.7.3.1 Removing the SDRAM........................................................................................................................................................... 4- 18
4.7.4 Boot ROM.............................................................................................................................................................. 4- 18
4.7.4.1 Removing the Boot ROM ....................................................................................................................................................... 4- 18
4.7.5 HDD....................................................................................................................................................................... 4- 19
4.7.5.1 Removing the HDD ................................................................................................................................................................ 4- 19
4.7.5.2 After Replacing the HDD........................................................................................................................................................ 4- 19
4.7.6 Controller Fan........................................................................................................................................................ 4- 19
4.7.6.1 Removing the Controller Cooling Fan.................................................................................................................................... 4- 19
Chapter 5
Original Exposure System
5.1 Construction ...............................................................................................................................................5- 1
5.1.1 Specifications, Controls, and Functions .................................................................................................................. 5- 1
5.1.2 Major Components .................................................................................................................................................. 5- 1
5.1.3 Construction of the Control System......................................................................................................................... 5- 3
5.1.4
Reader Controller PCB............................................................................................................................................ 5- 3
5.2 Basic Sequence..........................................................................................................................................5- 5
5.2.1 Basic Sequence of Operations ................................................................................................................................ 5- 5
5.2.2 Basic Sequence of Operation in Response to a Press on the Start Key................................................................. 5- 5
5.3 Various Control...........................................................................................................................................5- 6
5.3.1 Controlling the Scanner Drive System..................................................................................................................... 5- 6
5.3.1.1 Overview .................................................................................................................................................................................. 5- 6
5.3.1.2 Controlling the Scanner Motor ................................................................................................................................................. 5- 6
5.3.2 Enlargement/Reduction ........................................................................................................................................... 5- 7
5.3.2.1 Changing the Magnification in Main Scanning Direction.......................................................................................................... 5- 7
5.3.2.2 Changing the Magnification in Sub Scanning Direction ........................................................................................................... 5- 7
5.3.3 Controlling the Scanning Lamp ............................................................................................................................... 5- 8