Canon imageRUNNER 7095 Service Manual page 95

Contents
4.1 Construction..................................................................................................................................................... 4- 1
4.1.1 Construction/Functions ........................................................................................................................... 4- 1
4.2 Construction of the Electrical Circuitry ........................................................................................................ 4- 2
4.2.1 Main Controller PCB................................................................................................................................ 4- 2
4.3 Start-Up Sequence ......................................................................................................................................... 4- 3
4.3.1 Overview ................................................................................................................................................... 4- 3
4.3.2 Start-Up Sequence .................................................................................................................................. 4- 3
4.3.3 Action to Take in Response to E602 .................................................................................................... 4- 6
4.4 Shut-Down Sequence .................................................................................................................................... 4- 9
4.4.1 Flow of Operation .................................................................................................................................... 4- 9
4.5 Image Processing ........................................................................................................................................... 4- 9
4.5.1 Overview of the Image Flow .................................................................................................................. 4- 9
4.5.2 Configuration of the Image Processing Modules.............................................................................. 4- 10
4.5.3 Reader Input Image Processing.......................................................................................................... 4- 10
4.5.4 Compression/Expansion/Editing Block .............................................................................................. 4- 11
4.5.5 Printer Output Image Processing ........................................................................................................ 4- 11
4.6 Parts Replacement Procedure ................................................................................................................... 4- 12
4.6.1 Main Controller Box ............................................................................................................................... 4- 12
4.6.2 Main Controller PCB .............................................................................................................................. 4- 13
4.6.3 SDRAM .................................................................................................................................................... 4- 16
4.6.4 Boot ROM ................................................................................................................................................ 4- 16
4.6.5 HDD .......................................................................................................................................................... 4- 17
4.6.6 Video PCB ............................................................................................................................................... 4- 18
4.6.7 Reader I/F PCB ...................................................................................................................................... 4- 19
4.6.8 Controller Fan ......................................................................................................................................... 4- 20
Contents