Canon iR2422 series Service Manual page 93

Contents
3.1 Construction ...................................................................................................................................................................3-1
3.1.1 Constraction and Mechanisms ..................................................................................................................................................... 3-1
3.2 Construction of the Electrical Circuitry .........................................................................................................................3-2
3.2.1 Image processor PCB................................................................................................................................................................... 3-2
3.3 Image Processing ...........................................................................................................................................................3-2
3.3.1 Overview of Image flow ............................................................................................................................................................. 3-2
3.3.2 Configration of Image processing Module ................................................................................................................................. 3-4
3.3.3 Reader entry Image processing .................................................................................................................................................... 3-4
3.3.4 Compression/extension/edit processing block............................................................................................................................. 3-5
3.3.5 Printer output Image processing ................................................................................................................................................ 3-5
3.4 Flow of Image Data........................................................................................................................................................3-6
3.4.1 Image data flow of copy function ............................................................................................................................................... 3-6
3.4.2 Image data flow of BDL function ................................................................................................................................................ 3-6
3.5 Parts Replacement Procedure.........................................................................................................................................3-7
3.5.1 Main Controller PCB ................................................................................................................................................................... 3-7
3.5.1.1 Preparation for Removing the image processor PCB .....................................................................................................................................3-7
3.5.1.2 Removing the Image Processor PCB ..............................................................................................................................................................3-7
3.5.1.3 Procedure after Replacing the Image Processor PCB .....................................................................................................................................3-7
Contents