Canon IR6570 Series Service Manual page 20

Contents
9.2.8Sleep Mode ............................................................................................................................................... 9- 11
9.2.9Copying/Printing Mode ............................................................................................................................. 9- 12
9.2.10Down Sequence ....................................................................................................................................... 9- 13
9.2.11Enhanced Fixing Mode............................................................................................................................ 9- 13
9.2.12Heavy Paper Mode .................................................................................................................................. 9- 14
9.2.13Transparency Mode ................................................................................................................................. 9- 15
9.2.14Bond Paper Mode .................................................................................................................................... 9- 16
9.3 Various Control Mechanisms .......................................................................................................................... 9- 17
9.3.1 Fixing Drive System.................................................................................................................................. 9- 17
9.3.1.1 Controlling the Drive of the Fixing Roller ........................................................................................ 9- 17
9.3.1.2 Controlling the Drive of the Fixing Inlet Guide ................................................................................ 9- 18
9.3.1.3 Controlling the Reciprocating Movement of the Thermistor ............................................................ 9- 19
9.3.1.4 Controlling the Reciprocating Mechanism of the Upper Separation Claw ....................................... 9- 20
9.3.1.5 Controlling the Drive of the Shutter .................................................................................................. 9- 20
9.3.1.6 Controlling the Shutter Position ........................................................................................................ 9- 21
9.3.2 Cleaning .................................................................................................................................................... 9- 24
9.3.2.1 Controlling the Drive of the Cleaning Web....................................................................................... 9- 24
9.3.2.2 Controlling the Mechanism Used to Detect the Remaining Length of the Cleaning Web................ 9- 26
9.3.3 Detecting the Passage of Paper ................................................................................................................. 9- 28
9.3.3.1 Preventing Wrapping of Paper........................................................................................................... 9- 28
9.4 Protective Functions ........................................................................................................................................ 9- 30
9.4.1Detecting an Error Using the Thermistor .................................................................................................. 9- 30
9.4.2Detecting an Error Using the Thermal Switch .......................................................................................... 9- 30
9.4.3Errors ......................................................................................................................................................... 9- 30
9.5 Parts Replacement Procedure .......................................................................................................................... 9- 32
9.5.1 Fixing/Feeding Assembly ......................................................................................................................... 9- 32
9.5.1.1 Removing the Fixing Feed Unit......................................................................................................... 9- 32
9.5.2 Fixing Unit ................................................................................................................................................ 9- 34
9.5.2.1 Removing the Fixing Upper Unit ...................................................................................................... 9- 34
9.5.3 Pressure Roller .......................................................................................................................................... 9- 37
9.5.3.1 Removing the Pressure Roller ........................................................................................................... 9- 37
9.5.4 Upper Fixing Roller .................................................................................................................................. 9- 38
9.5.4.1 Removing the Fixing Roller .............................................................................................................. 9- 38
9.5.4.2 Points to Note When Mounting the Fixing Roller............................................................................. 9- 41
9.5.4.3 Applying Grease After Replacing the Fixing Roller ......................................................................... 9- 43
9.5.4.4 Adjusting the Nip Width.................................................................................................................... 9- 44
9.5.5 External Delivery Roller ........................................................................................................................... 9- 44
9.5.5.1 Removing the Outside Delivery Roller ............................................................................................. 9- 44
9.5.6 Internal Delivery Roller ............................................................................................................................ 9- 45
9.5.6.1 Removing the Inside Delivery Roller ................................................................................................ 9- 45
9.5.6.2 Points to Note When Mounting the Inside Delivery Roller............................................................... 9- 47
9.5.7 Main Thermistor........................................................................................................................................ 9- 47
9.5.7.1 Removing the Main Thermistor/Shutter Thermistor ......................................................................... 9- 47
9.5.7.2 Points to Note When Mounting the Thermistor/Shutter Thermistor ................................................. 9- 48
9.5.8 Sub Thermistor .......................................................................................................................................... 9- 49
9.5.8.1 Removing the Sub Thermistor........................................................................................................... 9- 49
9.5.8.2 Point to Note When Mounting the Sub Thermistor........................................................................... 9- 50
9.5.9 Thermal Switch ......................................................................................................................................... 9- 50
9.5.9.1 Removing the Thermal Switch .......................................................................................................... 9- 50