Canon imageRUNNER 2270, Руководство по обслуживанию

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Contents
Contents
Chapter 4 Main Controller
4.1 Construction............................................................................................................... 4-1
4.1.1 Construction and Mechanisms ............................................................................ 4-1
4.2 Construction of the Electrical Circuitry..................................................................... 4-3
4.2.1 Main Controller PCB .......................................................................................... 4-3
4.2.2 HDD .................................................................................................................... 4-4
4.3 Start-Up Sequence ..................................................................................................... 4-8
4.3.1 Overview ............................................................................................................. 4-8
4.3.2 Start-Up Sequence............................................................................................... 4-9
4.4 Shut-Down Sequence............................................................................................... 4-12
4.4.1 Overview........................................................................................................... 4-12
4.4.2 Flow of Operation ............................................................................................. 4-12
4.5 Image Processing ..................................................................................................... 4-13
4.5.1 Overview of the Image Flow ............................................................................ 4-13
4.5.2 Construction of the Image Processing Module ................................................. 4-14
4.5.3 Reader Unit Input Image Processing ................................................................ 4-15
4.5.4 Compressio/ Extesion/ Editing Block .............................................................. 4-16
4.5.5 Printer unit Output Image Processing ............................................................... 4-17
4.6 Flow of Image Data ................................................................................................. 4-18
4.6.1 Flow of Image Data According to Copy Functions .......................................... 4-18
4.6.2 Flow of Image Data for the Box Function ........................................................ 4-19
4.6.3 Flow of Image Data for the SEND Function .................................................... 4-20
4.6.4 Flow of Image Data for the Fax Transmission ................................................. 4-21
4.6.5 Flow of Image Data for the Fax Reception Function........................................ 4-22
4.6.6 Flow of Image Data for the PDL Function ....................................................... 4-23
4.7 Parts Replacement Procedure .................................................................................. 4-24
4.7.1 Main Controller PCB ........................................................................................ 4-24
4.7.2 SDRAM ............................................................................................................ 4-26
4.7.3 Boot ROM ......................................................................................................... 4-27
4.7.4 HDD .................................................................................................................. 4-27