ContentsContents4.1 Construction ...................................................................................................................................................................4-14.1.1 Construction and Mechanisms ..................................................................................................................................................... 4-14.1.2 Construction and Functions ......................................................................................................................................................... 4-14.2 Construction of the Electrical Circuitry .........................................................................................................................4-24.2.1 Main Controller PCB ................................................................................................................................................................... 4-24.2.2 Main Controller PCB ................................................................................................................................................................... 4-34.2.3 HDD ............................................................................................................................................................................................. 4-44.2.4 HDD ............................................................................................................................................................................................. 4-64.2.5 HDD (optional) ............................................................................................................................................................................ 4-84.3 Start-Up Sequence........................................................................................................................................................4-104.3.1 Overview.................................................................................................................................................................................... 4-104.3.2 Start-Up Sequence ..................................................................................................................................................................... 4-114.4 Shut-Down Sequence ...................................................................................................................................................4-124.4.1 Overview.................................................................................................................................................................................... 4-124.4.2 Overview (w/ HDD) .................................................................................................................................................................. 4-124.4.3 Flow of Operation ...................................................................................................................................................................... 4-124.4.4 Flow of Operation (w/ HDD)..................................................................................................................................................... 4-124.5 Image Processing .........................................................................................................................................................4-134.5.1 Overview of the Image Flow ..................................................................................................................................................... 4-134.5.2 Construction of the Image Processing Module .......................................................................................................................... 4-134.5.3 Construction of the Image Processing Module .......................................................................................................................... 4-144.5.4 Reader Unit Input Image Processing ......................................................................................................................................... 4-144.5.5 Compressio/ Extesion/ Editing Block....................................................................................................................................... 4-154.5.6 Compression/Expansion/Edit Block .......................................................................................................................................... 4-154.5.7 Printer unit Output Image Processing ........................................................................................................................................ 4-164.6 Flow of Image Data......................................................................................................................................................4-164.6.1 Flow of Image Data According to Copy Functions ................................................................................................................... 4-164.6.2 Flow of Image Data for the Copy Function ............................................................................................................................... 4-174.6.3 Flow of Image Data for the Box Function ................................................................................................................................. 4-174.6.4 Flow of Image Data for the Box Function ................................................................................................................................. 4-184.6.5 Flow of Image Data for the SEND Function ............................................................................................................................. 4-184.6.6 Flow of Image Data for the SEND Function ............................................................................................................................. 4-194.6.7 Flow of Image Data for the Fax Transmission .......................................................................................................................... 4-194.6.8 Flow of Image Data for the Fax Transmission Function ........................................................................................................... 4-204.6.9 Flow of Image Data for the Fax Reception Function ................................................................................................................ 4-204.6.10 Flow of Image Data for the Fax Reception Function .............................................................................................................. 4-214.6.11 Flow of Image Data for the PDL Function .............................................................................................................................. 4-224.6.12 Flow of Image Data for the PDL Function .............................................................................................................................. 4-224.7 Parts Replacement Procedure.......................................................................................................................................4-224.7.1 Main Controller PCB ................................................................................................................................................................. 4-224.7.1.1 Removing the Rear Cover .............................................................................................................................................................................4-224.7.1.2 Removing the Main Controller PCB.............................................................................................................................................................4-234.7.2 SDRAM ..................................................................................................................................................................................... 4-244.7.2.1 Removing the Face Cover .............................................................................................................................................................................4-244.7.2.2 Removing the SDRAM .................................................................................................................................................................................4-254.7.3 Boot ROM.................................................................................................................................................................................. 4-254.7.3.1 Removing the Face Cover .............................................................................................................................................................................4-254.7.3.2 Removing the Boot ROM .............................................................................................................................................................................4-264.7.4 HDD ........................................................................................................................................................................................... 4-264.7.4.1 Removing the Face Cover .............................................................................................................................................................................4-26
