Canon iR3570 Service Manual page 391

Contents
9.1 Construction ...................................................................................................................................................................9-1
9.1.1 Specifications, Control Mechanisms, and Functions ................................................................................................................... 9-1
9.1.2 Major Components....................................................................................................................................................................... 9-1
9.2 Basic Sequence ..............................................................................................................................................................9-1
9.2.1 Power-On Sequence..................................................................................................................................................................... 9-1
9.2.2 Down Sequence ........................................................................................................................................................................... 9-2
9.3 Various Control Mechanisms.........................................................................................................................................9-2
9.3.1 Controlling the Speed of the Fixing Film .................................................................................................................................... 9-2
9.3.1.1 Controlling the Fixing Film Speed in Response to Low Temperature ...........................................................................................................9-2
9.3.1.2 Controlling the Fixing Film Speed..................................................................................................................................................................9-2
9.3.2 Controlling the Fixing Film Temperature.................................................................................................................................... 9-2
9.3.2.1 Controlling the Power Supply in Response to Low Temperature...................................................................................................................9-2
9.3.2.2 Controlling the Feeding in Response to Low Temperature ............................................................................................................................9-2
9.3.2.3 Controlling the Power Supply at Start-Up ......................................................................................................................................................9-2
9.3.2.4 Copying Temperature Control ........................................................................................................................................................................9-3
9.3.2.5 Changing the Fixing Film Control Temperature.............................................................................................................................................9-3
9.3.2.6 Temperature Control in Response to Automatic Double-Sided Copy............................................................................................................9-3
9.3.2.7 Temperature Control in Response to Change of Paper Size ...........................................................................................................................9-3
9.3.3 Cleaning ....................................................................................................................................................................................... 9-3
9.3.3.1 Fixing Film Cleaning ......................................................................................................................................................................................9-3
9.3.4 Detecting the Passage of Paper .................................................................................................................................................... 9-4
9.3.4.1 Detecting the Passage of Paper .......................................................................................................................................................................9-4
9.4 Protective Functions.......................................................................................................................................................9-4
9.4.1 Protective Functions..................................................................................................................................................................... 9-4
9.4.2 Detecting an Error........................................................................................................................................................................ 9-5
9.5 Parts Replacement Procedure.........................................................................................................................................9-5
9.5.1 Fixing Unit ................................................................................................................................................................................... 9-5
9.5.1.1 Removing the Right Cover (rear)....................................................................................................................................................................9-5
9.5.1.2 Removing the Right Door ...............................................................................................................................................................................9-5
9.5.1.3 Removing the Right Door ...............................................................................................................................................................................9-6
9.5.1.4 Removing the Fixing Unit...............................................................................................................................................................................9-6
9.5.2 Pressure Roller ............................................................................................................................................................................. 9-7
9.5.2.1 Removing the inside delivery cover unit (old)................................................................................................................................................9-7
9.5.2.2 Removing the inside delivery cover unit (new) ..............................................................................................................................................9-9
9.5.2.3 Removing the Grounding Plate .......................................................................................................................................................................9-9
9.5.2.4 Removing the Fixing Film Cover ...................................................................................................................................................................9-9
9.5.2.5 Removing the Left Side Plate .......................................................................................................................................................................9-10
9.5.2.6 Releasing the Locking Plate..........................................................................................................................................................................9-11
9.5.2.7 Removing the Fixing Film Unit ....................................................................................................................................................................9-11
9.5.2.8 Removing the Inlet Guide .............................................................................................................................................................................9-12
9.5.2.9 Removing the Pressure Roller.......................................................................................................................................................................9-12
9.5.3 Cleaning Roller .......................................................................................................................................................................... 9-13
9.5.3.1 Removing the inside delivery cover unit (old)..............................................................................................................................................9-13
9.5.3.2 Removing the inside delivery cover unit (new) ............................................................................................................................................9-15
9.5.3.3 Removing the Cleaning Roller......................................................................................................................................................................9-15
9.5.4 Fixing Film................................................................................................................................................................................. 9-15
9.5.4.1 Removing the inside delivery cover unit (old)..............................................................................................................................................9-15
9.5.4.2 Removing the inside delivery cover unit (new) ............................................................................................................................................9-17
9.5.4.3 Removing the Grounding Plate .....................................................................................................................................................................9-17
9.5.4.4 Removing the Fixing Film Cover .................................................................................................................................................................9-17
9.5.4.5 Removing the Left Side Plate .......................................................................................................................................................................9-17
9.5.4.6 Releasing the Locking Plate..........................................................................................................................................................................9-18
9.5.4.7 Removing the Fixing Film Unit ....................................................................................................................................................................9-19
Contents