Canon imagePRESS C1 P Service Manual page 21

Chapter9 Fixing System
9.1 Construction ...................................................................................................................................................................9-1
9.1.1 Specifications/Control/Function .................................................................................................................................................. 9-1
9.1.2 Major Components (Section) ....................................................................................................................................................... 9-2
9.1.3 Major Components (Thermistor / Thermal switch) ..................................................................................................................... 9-3
9.1.4 Major Components (Sensor/Solenoid)......................................................................................................................................... 9-4
9.1.5 Control System Configuration ..................................................................................................................................................... 9-5
9.1.6 Fixing Roller/Belt Drive Control ................................................................................................................................................. 9-8
9.2 Basic Sequence ............................................................................................................................................................9-10
9.2.1 At Power-On .............................................................................................................................................................................. 9-10
9.2.2 Print (Constant Speed) ............................................................................................................................................................... 9-11
9.2.3 Print (1/3-Speed) ........................................................................................................................................................................ 9-12
9.3 Various Control Mechanisms.......................................................................................................................................9-13
9.3.1 Controlling the Fixing Roller Temperature ............................................................................................................................... 9-13
9.3.1.1 Down Sequence.............................................................................................................................................................................................9-13
9.3.1.2 Power Save Mode .........................................................................................................................................................................................9-14
9.3.2 Detecting the Passage of Paper .................................................................................................................................................. 9-14
9.3.2.1 Detection for Paper Wrapping ......................................................................................................................................................................9-14
9.3.3 External Heat Roller Drive Control ........................................................................................................................................... 9-17
9.3.3.1 Detached/Attached Mechanism of the External Heat Roller ........................................................................................................................9-17
9.3.4 Belting inclined Control............................................................................................................................................................. 9-19
9.3.4.1 Control for adjusting Fixing Belt Displacement ...........................................................................................................................................9-19
9.4 Belt Pressurizing Mechanism......................................................................................................................................9-22
9.4.1 Locking Mechanism of the Fixing Belt ..................................................................................................................................... 9-22
9.5 Fixing Cleaning Web Mechanisms ..............................................................................................................................9-24
9.5.1 Controll of the Fixing Cleaning Web Drive .............................................................................................................................. 9-24
9.5.2 Control of the Fixing Cleaning Web Length Detection............................................................................................................. 9-25
9.5.3 Detached/Attached Mechanism of the Cleaning Web (Web Roller)......................................................................................... 9-26
9.5.4 Refresh Roller Attach/Detach Mechanism ................................................................................................................................ 9-28
9.6 Protective Functions.....................................................................................................................................................9-29
9.6.1 Protective Circuit ....................................................................................................................................................................... 9-29
9.6.2 Related Error Code ................................................................................................................................................................... 9-31
9.7 Parts Replacement Procedure.......................................................................................................................................9-34
9.7.1 Fixing Drive Unit ....................................................................................................................................................................... 9-34
9.7.1.1 Preparation for Removing the Fixing Drive Second Gear ............................................................................................................................9-34
9.7.1.2 Removing the Fixing Drive Second Gear .....................................................................................................................................................9-34
9.7.2 Fixing Unit ................................................................................................................................................................................. 9-35
9.7.2.1 Preparation for Removing the Fixing Assembly Unit...................................................................................................................................9-35
9.7.2.2 Removing the Fixing Assembly Unit............................................................................................................................................................9-35
9.7.2.3 Removing the Fixing Assembly Unit............................................................................................................................................................9-36
9.7.3 Fixing Belt Unit ......................................................................................................................................................................... 9-38
9.7.3.1 Preparation for Removing the Fixing Belt Unit ............................................................................................................................................9-38
9.7.3.2 Removing the Fixing Belt Unit .....................................................................................................................................................................9-38
9.7.3.3 Preparation for Removing the Fixing Separation Roller Ball Bearing .........................................................................................................9-40
9.7.3.4 Removing the Fixing Separation Roller Ball Bearing ..................................................................................................................................9-40
9.7.4 Fixing Roller .............................................................................................................................................................................. 9-40
9.7.4.1 Preparation for Removing the Fixing Roller.................................................................................................................................................9-40
9.7.4.2 Removing the Fixing Roller..........................................................................................................................................................................9-40
9.7.4.3 After Replacing the Fixing Roller.................................................................................................................................................................9-40
9.7.5 Fixing Belt ................................................................................................................................................................................. 9-42
9.7.5.1 Preparation for Removing the Fixing Belt ....................................................................................................................................................9-42
9.7.5.2 Removing the Fixing Belt .............................................................................................................................................................................9-42
9.7.5.3 After Replacing the Fixing Belt ....................................................................................................................................................................9-43
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