Canon iR4570 Series Service Manual page 19

8.8.21.7 Removing the Sensor Mounting Plate........................................................................................... 8- 137
8.8.21.8 Removing the Vertical Path Roller................................................................................................ 8- 138
8.8.22 Duplex Feed Roller 2 ............................................................................................................................ 8- 138
8.8.22.1 Removing the Right Cover (rear) .................................................................................................. 8- 138
8.8.22.2 Removing the Right Door ............................................................................................................. 8- 138
8.8.22.3 Removing the Right Door ............................................................................................................. 8- 139
8.8.22.4 Removing the Duplex Feed Roller 2 ............................................................................................. 8- 140
8.8.23 Duplex Feed Sensor .............................................................................................................................. 8- 141
8.8.23.1 Removing the Right Cover (rear) .................................................................................................. 8- 141
8.8.23.2 Removing the Right Door ............................................................................................................. 8- 141
8.8.23.3 Removing the Right Door ............................................................................................................. 8- 142
8.8.23.4 Removing the Duplex Feed Sensor ............................................................................................... 8- 143
8.8.24 Duplex Feed Clutch .............................................................................................................................. 8- 144
8.8.24.1 Removing the Rear Cover ............................................................................................................. 8- 144
8.8.24.2 Removing the Duplex Feed Clutch ............................................................................................... 8- 144
8.8.25 Delivery Assembly 1............................................................................................................................. 8- 145
8.8.25.1 Removing the Right Cover (rear) .................................................................................................. 8- 145
8.8.25.2 Removing the Front Cover Unit .................................................................................................... 8- 145
8.8.25.3 Removing the Delivery Tray ......................................................................................................... 8- 145
8.8.25.4 Removing the Right Door ............................................................................................................. 8- 146
8.8.25.5 Removing the Right Door ............................................................................................................. 8- 147
8.8.25.6 Removing the Extension Delivery Kit .......................................................................................... 8- 147
8.8.25.7 Removing the Delivery Assembly 1.............................................................................................. 8- 148
8.8.26 Fixing/ Delivery Drive Assembly ......................................................................................................... 8- 149
8.8.26.1 Removing the Right Cover (rear) .................................................................................................. 8- 149
8.8.26.2 Removing the Front Cover Unit .................................................................................................... 8- 149
8.8.26.3 Removing the Delivery Tray ......................................................................................................... 8- 149
8.8.26.4 Removing the Right Door ............................................................................................................. 8- 150
8.8.26.5 Removing the Right Door ............................................................................................................. 8- 151
8.8.26.6 Removing the Delivery Assembly 1.............................................................................................. 8- 151
8.8.26.7 Removing the Fixing Unit ............................................................................................................. 8- 152
8.8.26.8 Removing the Fixing/Delivery Drive Assembly........................................................................... 8- 153
8.8.27 Separation Roller .................................................................................................................................. 8- 154
8.8.27.1 Removing the Pickup Roller/Feed Roller/Separation Roller ........................................................ 8- 154
Chapter 9 Fixing System
9.1 Construction ...................................................................................................................................................... 9- 1
9.1.1Specifications, Control Mechanisms, and Functions .................................................................................. 9- 1
9.1.2Major Components ...................................................................................................................................... 9- 1
9.2 Basic Sequence.................................................................................................................................................. 9- 3
9.2.1Power-On Sequence .................................................................................................................................... 9- 3
9.2.2Down Sequence ........................................................................................................................................... 9- 3
9.3 Various Control Mechanisms............................................................................................................................ 9- 4
9.3.1 Controlling the Speed of the Fixing Film .................................................................................................. 9- 4
9.3.1.1 Controlling the Fixing Film Speed in Response to Low Temperature................................................ 9- 4
9.3.1.2 Controlling the Fixing Film Speed ...................................................................................................... 9- 4
9.3.2 Controlling the Fixing Film Temperature................................................................................................... 9- 5
9.3.2.1 Controlling the Power Supply in Response to Low Temperature....................................................... 9- 5
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