Canon iR4570 Series Service Manual page 168

Contents
5.4.3 Scanner Motor ........................................................................................................................................... 5-37
5.4.3.1 Removing the Reader Rear Cover ...................................................................................................... 5-37
5.4.3.2 Removing the Scanner Motor ............................................................................................................. 5-37
5.4.4 Contact sensor............................................................................................................................................ 5-38
5.4.4.1 Removing the Reader Front Cover ..................................................................................................... 5-38
5.4.4.2 Removing the Reader Rear Cover ...................................................................................................... 5-40
5.4.4.3 Removing the Copyboard Glass ......................................................................................................... 5-40
5.4.4.4 Removing the Contact Image Sensor (CIS)........................................................................................ 5-42
5.4.4.5 After Replacement of the CIS............................................................................................................. 5-44
5.4.5 Copyboard Cover Open/Close Sensor ....................................................................................................... 5-45
5.4.5.1 Removing the Reader Rear Cover ...................................................................................................... 5-45
5.4.5.2 Removing the Copyboard Cover Open/Closed Sensor (front/rear).................................................... 5-46
5.4.6 Contact Sensor HP Sensor ......................................................................................................................... 5-47
5.4.6.1 Removing the Copyboard Glass ......................................................................................................... 5-47
5.4.6.2 Removing the ADF Reading Glass..................................................................................................... 5-48
5.4.6.3 Removing the Contract Sensor Home Position Sensor ...................................................................... 5-49
5.4.7 Original Size Sensor .................................................................................................................................. 5-50
5.4.7.1 Removing the Reader Rear Cover ...................................................................................................... 5-50
5.4.7.2 Removing the Copyboard Glass ......................................................................................................... 5-51
5.4.7.3 Removing the Original Size Sensor.................................................................................................... 5-53
5.4.8 Reader Heater (option) .............................................................................................................................. 5-55
5.4.8.1 Removing the Copyboard Glass ......................................................................................................... 5-55
5.4.8.2 Removing the Reader Heater (right)................................................................................................... 5-57
5.4.8.3 Removing the ADF Reading Glass..................................................................................................... 5-58
5.4.8.4 Removing the Reader Heater (left)..................................................................................................... 5-58