Canon iR C3200 Series Service Manual page 12

Contents
6.4.6.5 After Replacing the CCD Unit ........................................................................................................... 6-24
6.4.7 Fuse PCB (option) ..................................................................................................................................... 6-24
6.4.7.1 Removing the Reader Rear Cover ..................................................................................................... 6-24
6.4.7.2 Removing the Copyboard Cover Open/Closed Sensor Mounting ..................................................... 6-24
6.4.7.3 Removing the Fuse PCB Unit (option; 100/230v model only) ......................................................... 6-25
6.4.8 Scanner Motor ........................................................................................................................................... 6-25
6.4.8.1 Removing the Copyboard Glass ........................................................................................................ 6-25
6.4.8.2 Removing the Reader Rear Cover ..................................................................................................... 6-26
6.4.8.3 Removing the Interface PCB ............................................................................................................. 6-26
6.4.8.4 Removing the Scanner Motor ............................................................................................................ 6-27
6.4.8.5 Mounting the Scanner Motor ............................................................................................................. 6-27
6.4.9 Original Cover Sensor ............................................................................................................................... 6-28
6.4.9.1 Removing the Reader Rear Cover ..................................................................................................... 6-28
6.4.9.2 Removing the Copyboard Cover Open/Closed Sensor Mounting ..................................................... 6-28
6.4.9.3 Removing the Copyboard Cover Open/Closed Sensor Cover ........................................................... 6-29
6.4.9.4 Removing the Copyboard Cover Open/Closed Sensor ..................................................................... 6-29
6.4.10 Scanner HP Sensor .................................................................................................................................. 6-29
6.4.10.1 Removing the Reader Rear Cover ................................................................................................... 6-29
6.4.10.2 Removing the Copyboard Cover Open/Closed Sensor Mounting ................................................... 6-29
6.4.10.3 Removing the Mirror Base Home Position Sensor .......................................................................... 6-30
6.4.11 Original Sensor ........................................................................................................................................ 6-30
6.4.11.1 Removing the Copyboard Glass ...................................................................................................... 6-30
6.4.11.2 Removing the CCD Unit Cover ....................................................................................................... 6-31
6.4.11.3 Removing the Original Size Detection Unit .................................................................................... 6-31
6.4.11.4 Removing the Original Size Sensor ................................................................................................. 6-31
6.4.12 Reader Heater (option) ............................................................................................................................ 6-31
6.4.12.1 Removing the Copyboard Glass ...................................................................................................... 6-31
6.4.12.2 Removing the Reader Rear Cover ................................................................................................... 6-32
6.4.12.3 Removing the Fuse PCB Unit .......................................................................................................... 6-33
6.4.12.4 Removing the Reader Heater (option; 100/230V model only) ........................................................ 6-33
Chapter 7 Image Processing System
7.1 Outline ............................................................................................................................................................... 7-1
7.1.1 Specifications, Control Mechanisms, and Functions .................................................................................. 7-1
7.1.2 Functional Construction of the PCBs ......................................................................................................... 7-1
7.2 Analog Image Processing .................................................................................................................................. 7-2
7.2.1 Outline ........................................................................................................................................................ 7-2
7.2.2 CCD Drive .................................................................................................................................................. 7-3
7.2.3 CCD Output Gain Correction and Offset Correction ................................................................................. 7-3
7.2.4 A/D Conversion of CCD Putput ................................................................................................................. 7-3
7.3 Digital Image Processing ................................................................................................................................... 7-4
7.3.1 Outline ........................................................................................................................................................ 7-4
7.3.2 Shading Correction ..................................................................................................................................... 7-4
Chapter 8 Laser Exposure
8.1 Construction ....................................................................................................................................................... 8-1
8.1.1 Specifications, Control Mechanisms, and Functions .................................................................................. 8-1
8.1.2 Major Components ..................................................................................................................................... 8-2
8.1.3 Construction of the Control System ........................................................................................................... 8-3
8.2 Basic Sequence .................................................................................................................................................. 8-4
8.2.1 Basic Sequence of Operations .................................................................................................................... 8-4
8.3 Various Control ................................................................................................................................................. 8-5