COPYRIGHT © 1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.viA. Outline ................................... 3-8B. Controlling the Temperature by aFluorescent Lamp Heater .... 3-10C. Controlling Pre-Heat Voltage............................................ 3-10D. Initial Activation ................... 3-11E. Detecting an Error ............... 3-12IV. DETECTING THE ORIGINAL SIZE................................................. 3-14A. Outline ................................. 3-14B. Detection by Original Sensors............................................ 3-14C. Detection by the Feeder ...... 3-14V. DISASSEMBLY/ASSEMBLY .... 3-15A. No. 1 Mirror Mount .............. 3-161. Removing the ScanningLamp/Scanning Lamp Heater....................................... 3-162. Points to Note WhenReplacing the Scanning Lamp....................................... 3-193. After Replacing the ScanningLamp .............................. 3-19B. Scanner Drive Assembly ..... 3-201. Removing the Scanner Motor....................................... 3-202. Scanner Drive Cable ...... 3-21C. PCBs ................................... 3-281. Removing the Light IntensityControl PCB ................... 3-282. Removing the Inverter PCB....................................... 3-29D. Others .................................. 3-311. Removing the Original SizeSensor (1/2).................... 3-312. Removing the Original SizeSensor (3/4).................... 3-323. Removing the Scanner HomePosition Sensor .............. 3-334. Removing the CopyboardGlass .............................. 3-335. Removing the Image LeadingEdge Sensor .................. 3-346. Removing the Standard WhitePlate ............................... 3-357. After Replacing the StandardWhite Plate ..................... 3-36CHAPTER 4 IMAGE PROCESSING SYSTEMI. OUTLINE .................................... 4-1II. ANALOG IMAGE PROCESSING4-4A. Outline ................................... 4-4III. DIGITAL IMAGE PROCESSING 4-6A. Outline ................................... 4-6B. Image Procesing FunctionalBlock...................................... 4-7C. Shading Correction ................ 4-9D. Line Conversion .................. 4-10E. Editing ................................. 4-11F. Density Processing .............. 4-121. Outline ............................ 4-122. Density Adjustment duringPrinting ........................... 4-14G. Binary Processing ............... 4-151. Dither Screen Method .... 4-152. Random Error Diffusion (R-ED) Method .................... 4-16H. Image Memory .................... 4-17I. Detecting the Orientation ofOriginals .............................. 4-19J. Black Pixel Count ................ 4-20IV. DISASSEMBLY/ASSEMBLY .... 4-21A. CCD PCB ............................ 4-221. Removing the CCD PCB....................................... 4-222. After Replacing the CCD Unit....................................... 4-23B. Image Processor PCB ......... 4-241. Removing the ImageProcessor PCB ............... 4-242. After Replacing the ImageProcessor PCB ............... 4-25C. Hard Disk (image server) ..... 4-261. Removing the Hard Disk(image server) ................ 4-262. After Replacing the Hard Disk(image server) ................ 4-26D. Others .................................. 4-271. Removing the SystemMotherboard ................... 4-272. Removing the Memory Board....................................... 4-283. Removing the Various PrinterBoards ............................ 4-284. Removing the OriginalDetection PCB ................ 4-29
