Canon iR2020 Series Service Manual page 14

Contents
7.5.13.4 Removing the Multifeeder Pickup Roller .............................................................................................................................. 7- 16
7.5.13.5 Removing the Separation Pad ............................................................................................................................................. 7- 17
Chapter 8 Fixing System
8.1 Construction ............................................................................................................................................... 8- 1
8.1.1 Specifications, Control Mechanisms, and Functions ...............................................................................................8- 1
8.1.2 Major Components...................................................................................................................................................8- 2
8.2 Various Control Mechanisms ..................................................................................................................... 8- 3
8.2.1 Controlling the Speed of the Fixing Film ..................................................................................................................8- 3
8.2.1.1 Controlling the Fixing Film Speed ............................................................................................................................................ 8- 3
8.2.2 Controlling the Fixing Film Temperature..................................................................................................................8- 3
8.2.2.1 Outline...................................................................................................................................................................................... 8- 3
8.2.2.2 Controlling the Fixing Film Temperature.................................................................................................................................. 8- 3
8.2.2.3 Target Temperatures by Mode ................................................................................................................................................ 8- 4
8.2.3 Detecting the Passage of Paper ..............................................................................................................................8- 4
8.2.3.1 Detecting the Passage of Paper .............................................................................................................................................. 8- 4
8.3 Protective Functions ................................................................................................................................... 8- 5
8.3.1 Protective Functions ................................................................................................................................................8- 5
8.4 Parts Replacement Procedure ................................................................................................................... 8- 7
8.4.1 Fixing Unit ................................................................................................................................................................8- 7
8.4.1.1 Removing the Drum Unit.......................................................................................................................................................... 8- 7
8.4.1.2 Removing the rear cover.......................................................................................................................................................... 8- 7
8.4.1.3 Removing the Left Cover (Rear) .............................................................................................................................................. 8- 7
8.4.1.4 Removing the Left Door ........................................................................................................................................................... 8- 7
8.4.1.5 Removing the Fixing Unit......................................................................................................................................................... 8- 8
8.4.2 Pressure Roller ........................................................................................................................................................8- 9
8.4.2.1 Removing the Drum Unit.......................................................................................................................................................... 8- 9
8.4.2.2 Removing the rear cover.......................................................................................................................................................... 8- 9
8.4.2.3 Removing the Left Cover (Rear) .............................................................................................................................................. 8- 9
8.4.2.4 Removing the Left Door ........................................................................................................................................................... 8- 9
8.4.2.5 Removing the Fixing Unit....................................................................................................................................................... 8- 10
8.4.2.6 Removing the Fixing Film Unit ............................................................................................................................................... 8- 10
8.4.2.7 Removing the Pressure Roller ............................................................................................................................................... 8- 12
8.4.3 Fixing Film..............................................................................................................................................................8- 13
8.4.3.1 Removing the Drum Unit........................................................................................................................................................ 8- 13
8.4.3.2 Removing the rear cover........................................................................................................................................................ 8- 13
8.4.3.3 Removing the Left Cover (Rear) ............................................................................................................................................ 8- 13
8.4.3.4 Removing the Left Door ......................................................................................................................................................... 8- 13
8.4.3.5 Removing the Fixing Unit....................................................................................................................................................... 8- 14
8.4.3.6 Removing the Fixing Film Unit ............................................................................................................................................... 8- 15
8.4.4 Fixing Delivery Sensor ...........................................................................................................................................8- 17
8.4.4.1 Removing the Drum Unit........................................................................................................................................................ 8- 17
8.4.4.2 Removing the Rear Cover ..................................................................................................................................................... 8- 17
8.4.4.3 Removing the Left Cover (Rear) ............................................................................................................................................ 8- 17
8.4.4.4 Removing the Left Door ......................................................................................................................................................... 8- 17
8.4.4.5 Removing the Fixing Unit....................................................................................................................................................... 8- 18
8.4.4.6 Removing the Fixing Delivery Sensor.................................................................................................................................... 8- 18
8.4.5 Fixing Film Sensor .................................................................................................................................................8- 19
8.4.5.1 Removing the Drum Unit........................................................................................................................................................ 8- 19
8.4.5.2 Removing the Rear Cover ..................................................................................................................................................... 8- 19
8.4.5.3 Removing the Left Cover (Rear) ............................................................................................................................................ 8- 20
8.4.5.4 Removing the Left Door ......................................................................................................................................................... 8- 20
8.4.5.5 Removing the Fixing Unit....................................................................................................................................................... 8- 20
8.4.5.6 Removing the Fixing Film Sensor .......................................................................................................................................... 8- 21
Chapter 9 External and Controls
9.1 Control Panel.............................................................................................................................................. 9- 1
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