Canon iR7086 Series Service Manual

Contents

ContentsContents4.1 Construction ...................................................................................................................................................................4-14.1.1 Construction/Functions ................................................................................................................................................................ 4-14.2 Construction of the Electrical Circuitry .........................................................................................................................4-24.2.1 Main Controller PCB ................................................................................................................................................................... 4-24.2.2 Main Controller PCB (up graded version)................................................................................................................................... 4-34.3 Start-Up Sequence..........................................................................................................................................................4-44.3.1 Overview...................................................................................................................................................................................... 4-44.3.2 Start-Up Sequence ....................................................................................................................................................................... 4-54.3.3 Action to Take in Response to E602............................................................................................................................................ 4-64.4 Shut-Down Sequence .....................................................................................................................................................4-84.4.1 Flow of Operation ........................................................................................................................................................................ 4-84.5 Image Processing ...........................................................................................................................................................4-84.5.1 Overview of the Image Flow ....................................................................................................................................................... 4-84.5.2 Configuration of the Image Processing Modules......................................................................................................................... 4-94.5.3 Reader Input Image Processing ................................................................................................................................................. 4-104.5.4 Compression/Expansion/Editing Block ..................................................................................................................................... 4-114.5.5 Printer Output Image Processing ............................................................................................................................................... 4-124.6 Parts Replacement Procedure.......................................................................................................................................4-134.6.1 Main Controller Box .................................................................................................................................................................. 4-134.6.1.1 Making Preparations .....................................................................................................................................................................................4-134.6.1.2 Removing the Main Controller Box..............................................................................................................................................................4-134.6.2 Main Controller PCB ................................................................................................................................................................. 4-144.6.2.1 Making Preparations .....................................................................................................................................................................................4-144.6.2.2 Removing the Main Controller PCB.............................................................................................................................................................4-154.6.2.3 Removing the Main Controller PCB (up graded version) ............................................................................................................................4-154.6.2.4 When Replacing the Main Controller PCB...................................................................................................................................................4-154.6.2.5 When Replacing the Main Controller PCB (up graded version) ..................................................................................................................4-164.6.3 SDRAM ..................................................................................................................................................................................... 4-174.6.3.1 Making Preparations .....................................................................................................................................................................................4-174.6.3.2 Removing the DDR-SDRAM .......................................................................................................................................................................4-174.6.4 Boot ROM.................................................................................................................................................................................. 4-184.6.4.1 Making Preparations .....................................................................................................................................................................................4-184.6.4.2 Removing the Boot ROM .............................................................................................................................................................................4-184.6.4.3 Removing the Boot ROM (up graded version) .............................................................................................................................................4-184.6.5 HDD ........................................................................................................................................................................................... 4-184.6.5.1 Points to Note on Handling the Hard Disk....................................................................................................................................................4-184.6.5.2 Making Preparations .....................................................................................................................................................................................4-184.6.5.3 Removing the Hard Disk...............................................................................................................................................................................4-184.6.5.4 Removing the Hard Disk(up graded version) ...............................................................................................................................................4-194.6.5.5 Points to Note When Mounting the Hard Disk .............................................................................................................................................4-194.6.5.6 After Replacing the Hard Disk......................................................................................................................................................................4-194.6.6 Video PCB ................................................................................................................................................................................. 4-194.6.6.1 Making Preparations .....................................................................................................................................................................................4-194.6.6.2 Removing the Video PCB.............................................................................................................................................................................4-204.6.7 Reader I/F PCB .......................................................................................................................................................................... 4-204.6.7.1 Making Preparations .....................................................................................................................................................................................4-204.6.7.2 Removing the Reader I/F PCB......................................................................................................................................................................4-214.6.8 Controller Fan ............................................................................................................................................................................ 4-214.6.8.1 Making Preparations .....................................................................................................................................................................................4-214.6.8.2 Removing the Controller Fan........................................................................................................................................................................4-22