Canon iR3570 Service Manual

Also see for iR2270 Series: Product description Printer guide User guide Service manual Service manual

Contents

Canon iR3570 Service Manual Manual pdf 11 page image

Contents5.3.4 Detecting the Size of Originals ................................................................................................................................ 5- 95.3.4.1 Outline...................................................................................................................................................................................... 5- 95.3.4.2 Outline of Size Identification .................................................................................................................................................. 5- 105.3.5 Dirt Sensor Control ................................................................................................................................................ 5- 115.3.5.1 Outline.................................................................................................................................................................................... 5- 115.3.6 Image Processing.................................................................................................................................................. 5- 135.3.6.1 Outline.................................................................................................................................................................................... 5- 135.3.6.2 CCD Drive.............................................................................................................................................................................. 5- 145.3.6.3 Gain Correction and Offset Correction of the CCD Output .................................................................................................... 5- 145.3.6.4 A/D Conversion of the CCD Output ....................................................................................................................................... 5- 145.3.6.5 Shading Correction (outline) .................................................................................................................................................. 5- 145.3.6.6 Shading Adjustment............................................................................................................................................................... 5- 145.3.6.7 Shading Correction ................................................................................................................................................................ 5- 155.4 Parts Replacement Procedure .................................................................................................................5- 155.4.1 Copyboard glass.................................................................................................................................................... 5- 155.4.1.1 Removing the Copyboard Glass ............................................................................................................................................ 5- 155.4.1.2 Removing the ADF Reading Glass ........................................................................................................................................ 5- 155.4.2 Reader Controller PCB.......................................................................................................................................... 5- 155.4.2.1 Before Replacing the Reader Controller PCB........................................................................................................................ 5- 155.4.2.2 Removing the Reader Rear Cover......................................................................................................................................... 5- 165.4.2.3 Removing the rear cover of the machine ............................................................................................................................... 5- 165.4.2.4 Removing the flexible cable cover ......................................................................................................................................... 5- 165.4.2.5 Removing the Copyboard Glass ............................................................................................................................................ 5- 165.4.2.6 Removing the Reader Controller PCB ................................................................................................................................... 5- 175.4.2.7 After Replacing the Reader Controller PCB or After Initializing the RAM .............................................................................. 5- 185.4.3 Scanner Motor ....................................................................................................................................................... 5- 195.4.3.1 Removing the Reader Rear Cover......................................................................................................................................... 5- 195.4.3.2 Removing the Scanner Motor ................................................................................................................................................ 5- 195.4.4 Contact sensor ...................................................................................................................................................... 5- 195.4.4.1 Removing the Reader Front Cover ........................................................................................................................................ 5- 195.4.4.2 Removing the Reader Rear Cover......................................................................................................................................... 5- 205.4.4.3 Removing the Copyboard Glass ............................................................................................................................................ 5- 205.4.4.4 Removing the Contact Image Sensor (CIS)........................................................................................................................... 5- 215.4.4.5 After Replacement of the CIS ................................................................................................................................................ 5- 215.4.5 Copyboard Cover Open/Close Sensor .................................................................................................................. 5- 225.4.5.1 Removing the Reader Rear Cover......................................................................................................................................... 5- 225.4.5.2 Removing the Copyboard Cover Open/Closed Sensor (front/rear) ....................................................................................... 5- 225.4.6 Contact Sensor HP Sensor ................................................................................................................................... 5- 225.4.6.1 Removing the Copyboard Glass ............................................................................................................................................ 5- 225.4.6.2 Removing the ADF Reading Glass ........................................................................................................................................ 5- 235.4.6.3 Removing the Contract Sensor Home Position Sensor ......................................................................................................... 5- 235.4.7 Original Size Sensor.............................................................................................................................................. 5- 235.4.7.1 Removing the Reader Rear Cover......................................................................................................................................... 5- 235.4.7.2 Removing the Copyboard Glass ............................................................................................................................................ 5- 245.4.7.3 Removing the Original Size Sensor ....................................................................................................................................... 5- 245.4.8 Reader Heater (option).......................................................................................................................................... 5- 255.4.8.1 Removing the Copyboard Glass ............................................................................................................................................ 5- 255.4.8.2 Removing the Reader Heater (right)...................................................................................................................................... 5- 265.4.8.3 Removing the ADF Reading Glass ........................................................................................................................................ 5- 265.4.8.4 Removing the Reader Heater (left) ........................................................................................................................................ 5- 26Chapter 6 Laser Exposure6.1 Construction ...............................................................................................................................................6- 16.1.1 Specifications, Control Mechanism, and Functions................................................................................................. 6- 16.1.2 Major Components .................................................................................................................................................. 6- 16.1.3 Construction of the Control System......................................................................................................................... 6- 16.2 Basic Sequence..........................................................................................................................................6- 36.2.1 Basic Sequence ...................................................................................................................................................... 6- 3