Canon iR1200 Series Service Manual page 189

Contents
8.1 Construction ....................................................................................................................................................... 8-1
8.1.1 Outline ......................................................................................................................................................... 8-1
8.2 Various Control Mechanisms............................................................................................................................. 8-2
8.2.1 Controlling the Fixing Roller Temperature................................................................................................. 8-2
8.2.1.1 Controlling the Fixing Temperature..................................................................................................... 8-2
8.2.2 Controlling the Fixing File Bias Temperature ............................................................................................ 8-3
8.2.2.1 Controlling the Fixing Film Bias.......................................................................................................... 8-3
8.3 Protective Functions ........................................................................................................................................... 8-4
8.3.1 Outline ......................................................................................................................................................... 8-4
8.3.2 Detecting a Fault in the Fixing Assembly ................................................................................................... 8-4
8.4 Parts Replacement Procedure............................................................................................................................. 8-6
8.4.1 Fixing Unit .................................................................................................................................................. 8-6
8.4.1.1 Removing the Left Cover ..................................................................................................................... 8-6
8.4.1.2 Removing the Delivery Cover.............................................................................................................. 8-6
8.4.1.3 Removing the Delivery Upper Cover................................................................................................... 8-6
8.4.1.4 Removing the Delivery Rear Cover ..................................................................................................... 8-6
8.4.1.5 Disconnect connector ........................................................................................................................... 8-6
8.4.1.6 Removing the Control Panel ................................................................................................................ 8-7
8.4.1.7 Removing the Copyboard Glass........................................................................................................... 8-7
8.4.1.8 Removing the Fixing Assembly ........................................................................................................... 8-7
8.4.2 Pressure Roller ............................................................................................................................................ 8-8
8.4.2.1 Removing the Left Cover ..................................................................................................................... 8-8
8.4.2.2 Removing the Delivery Cover.............................................................................................................. 8-8
8.4.2.3 Removing the Delivery Upper Cover................................................................................................... 8-9
8.4.2.4 Removing the Delivery Rear Cover ..................................................................................................... 8-9
8.4.2.5 Disconnect connector ........................................................................................................................... 8-9
8.4.2.6 Removing the Control Panel ................................................................................................................ 8-9
8.4.2.7 Removing the Copyboard Glass......................................................................................................... 8-10
8.4.2.8 Removing the Fixing Assembly ......................................................................................................... 8-10
8.4.2.9 Removing the Fixing Film Unit ......................................................................................................... 8-11
8.4.2.10 Removing the Fixing Pressure Roller............................................................................................... 8-12
8.4.3 Fixing Film ................................................................................................................................................ 8-12
8.4.3.1 Removing the Left Cover ................................................................................................................... 8-12
8.4.3.2 Removing the Delivery Cover............................................................................................................ 8-12
8.4.3.3 Removing the Delivery Upper Cover................................................................................................. 8-12
8.4.3.4 Removing the Delivery Rear Cover ................................................................................................... 8-13
8.4.3.5 Disconnect connector ......................................................................................................................... 8-13
8.4.3.6 Removing the Control Panel .............................................................................................................. 8-13
8.4.3.7 Removing the Copyboard Glass......................................................................................................... 8-14
8.4.3.8 Removing the Fixing Assembly ......................................................................................................... 8-14
8.4.3.9 Removing the Fixing Film Unit ......................................................................................................... 8-15
8.4.4 Fixing Delivery Sensor.............................................................................................................................. 8-15
8.4.4.1 Removing the Left Cover ................................................................................................................... 8-15
8.4.4.2 Removing the Delivery Cover............................................................................................................ 8-16
Contents