佳能LBP3500维修手册

【实例截图】

【核心代码】

Contents
Chapter 1 PRODUCT DESCRIPTION
1.1 Features .....................................................................................................................................................1- 1
1.1.1 Features ..................................................................................................................................................................1- 1
1.2 System Construction ..................................................................................................................................1- 1
1.2.1 System Configuration..............................................................................................................................................1- 1
1.3 Product Specifications................................................................................................................................1- 1
1.3.1 Specifications ..........................................................................................................................................................1- 1
1.4 Name of Parts.............................................................................................................................................1- 3
1.4.1 External View...........................................................................................................................................................1- 3
1.4.2 Cross Section ..........................................................................................................................................................1- 4
1.5 Using the Machine......................................................................................................................................1- 5
1.5.1 Control Panel...........................................................................................................................................................1- 5
1.6 Safety .........................................................................................................................................................1- 5
1.6.1 Safety of Laser Light................................................................................................................................................1- 5
1.6.2 CDRH Regulations ..................................................................................................................................................1- 5
1.6.3 Safety of Toner........................................................................................................................................................1- 5
1.6.4 Handling the Laser Assembly..................................................................................................................................1- 6
Chapter 2 TECHNICAL REFERENCE
2.1 Functional Configuration.............................................................................................................................2- 1
2.1.1 Construction ............................................................................................................................................................2- 1
2.2 Basic Sequense..........................................................................................................................................2- 1
2.2.1 Basic Sequence of Operation..................................................................................................................................2- 1
2.2.2 Power-On Sequence ...............................................................................................................................................2- 1
2.3 LASER EXPOSURE SYSTEM...................................................................................................................2- 2
2.3.1 Overview/Configuration...........................................................................................................................................2- 2
2.3.1.1 Overview..................................................................................................................................................................................2- 2
2.3.2 Controlling the Laser Activation Timing...................................................................................................................2- 3
2.3.2.1 Turning On and Off the Laser ..................................................................................................................................................2- 3
2.3.2.2 Horizontal Synchronization Control..........................................................................................................................................2- 4
2.3.3 Laser Control...........................................................................................................................................................2- 5
2.3.3.1 APC Control.............................................................................................................................................................................2- 5
2.3.4 Laser Scanner Motor Control ..................................................................................................................................2- 5
2.3.4.1 Overview..................................................................................................................................................................................2- 5
2.3.4.2 Scanner Motor Speed Control .................................................................................................................................................2- 6
2.3.4.3 Detecting a Fault in the Scanner Motor ...................................................................................................................................2- 6
2.4 IMAGE FORMATION SYSTEM..................................................................................................................2- 6
2.4.1 Overview/Configuration...........................................................................................................................................2- 6
2.4.1.1 Construction.............................................................................................................................................................................2- 6
2.4.1.2 Printing Process.......................................................................................................................................................................2- 7
2.4.1.3 Electrostatic latent image formation block ...............................................................................................................................2- 8
2.4.1.4 Development block ..................................................................................................................................................................2- 8
2.4.1.5 Transfer block..........................................................................................................................................................................2- 9
2.4.1.6 Fixing block..............................................................................................................................................................................2- 9
2.4.1.7 Drum cleaning block ..............................................................................................................................................................2- 10
2.4.2 High-Voltage Control .............................................................................................................................................2- 10
2.4.2.1 Outline....................................................................................................................................................................................2- 10
2.4.2.2 Generation of primary charging bias......................................................................................................................................2- 11
2.4.2.3 Generation of the Developing Bias ........................................................................................................................................2- 11
2.4.2.4 Generation of transfer charging bias......................................................................................................................................2- 11
2.4.2.5 Generation of fixing bias........................................................................................................................................................2- 11
Contents
2.4.2.6 Generation of static charge eliminator bias............................................................................................................................2- 12
2.4.3 Toner Cartridge......................................................................................................................................................2- 12
2.4.3.1 Outline....................................................................................................................................................................................2- 12
2.4.3.2 Cartridge presence detection.................................................................................................................................................2- 12
2.5 PICKUP AND FEEDING SYSTEM...........................................................................................................2- 12
2.5.1 Overview/Configuration..........................................................................................................................................2- 12
2.5.1.1 Outline....................................................................................................................................................................................2- 12
2.5.2 Detecting Jams......................................................................................................................................................2- 13
2.5.2.1 Jam Detection Outline............................................................................................................................................................ 2- 13
2.5.2.2 Delay Jams............................................................................................................................................................................2- 14
2.5.2.3 Stationary Jams.....................................................................................................................................................................2- 14
2.5.2.4 Other Jams ............................................................................................................................................................................2- 14
2.5.3 Cassette Pickup.....................................................................................................................................................2- 15
2.5.3.1 Cassette pick-up mechanism.................................................................................................................................................2- 15
2.5.3.2 Cassette paper size detection/Cassette presence detection.................................................................................................2- 15
2.5.4 Multi-purpose Pickup .............................................................................................................................................2- 16
2.5.4.1 MPT pick-up mechanism .......................................................................................................................................................2- 16
2.6 EXTERNAL AND CONTROLS SYSTEM.................................................................................................2- 16
2.6.1 Fan.........................................................................................................................................................................2- 16
2.6.1.1 Outline....................................................................................................................................................................................2- 16
2.6.1.2 Main motor failure..................................................................................................................................................................2- 16
2.6.1.3 Fixing motor failure ................................................................................................................................................................2- 16
2.6.1.4 Fan motor failure....................................................................................................................................................................2- 16
2.6.2 Power Supply.........................................................................................................................................................2- 16
2.6.2.1 Power Supply.........................................................................................................................................................................2- 16
2.6.2.2 Protective Functions ..............................................................................................................................................................2- 18
2.6.2.3 Energy-Saving Function.........................................................................................................................................................2- 18
2.7 ENGINE CONTROL SYSTEM .................................................................................................................2- 18
2.7.1 Video Controller.....................................................................................................................................................2- 18
2.7.1.1 Outline....................................................................................................................................................................................2- 18
2.7.1.2 Outline of Operation by Block................................................................................................................................................2- 18
2.7.2 DC Controller.........................................................................................................................................................2- 19
2.7.2.1 Outline....................................................................................................................................................................................2- 19
2.8 FIXING UNIT/DELIVERY SYSTEM..........................................................................................................2- 20
2.8.1 Overview/Configuration..........................................................................................................................................2- 20
2.8.1.1 Outline....................................................................................................................................................................................2- 20
2.8.1.2 Major Components Inside the Fixing Assembly.....................................................................................................................2- 20
2.8.2 Various Control Mechanisms.................................................................................................................................2- 21
2.8.2.1 Fixing Temperature Control...................................................................................................................................................2- 21
2.8.2.2 Protective Functions ..............................................................................................................................................................2- 22
2.8.3 Other Functions .....................................................................................................................................................2- 23
2.8.3.1 Loop control...........................................................................................................................................................................2- 23
Chapter 3 DISASSEMBLY AND ASSEMBLY
3.1 EXTERNAL AND CONTROLS SYSTEM...................................................................................................3- 1
3.1.1 Rear Cover...............................................................................................................................................................3- 1
3.1.1.1 Before Removing the Rear Cover............................................................................................................................................3- 1
3.1.1.2 Removing the Rear Cover .......................................................................................................................................................3- 1
3.1.2 Rear Lower Cover....................................................................................................................................................3- 1
3.1.2.1 Removing the Lower Rear Cover.............................................................................................................................................3- 1
3.1.3 Right Cover..............................................................................................................................................................3- 1
3.1.3.1 Removing the Right Cover.......................................................................................................................................................3- 1
3.1.4 Front Right Cover.....................................................................................................................................................3- 1
3.1.4.1 Before Removing the Right Front Cover..................................................................................................................................3- 1
3.1.4.2 Removing the Front Right Cover .............................................................................................................................................3- 1
3.1.5 Lower Right Cover...................................................................................................................................................3- 1
3.1.5.1 Before Removing the Lower Right Cover ................................................................................................................................3- 1
3.1.5.2 Removing the Lower Right Cover............................................................................................................................................3- 1
Contents
3.1.6 Left Cover................................................................................................................................................................3- 2
3.1.6.1 Before Removing the Left Cover.............................................................................................................................................. 3- 2
3.1.6.2 Removing the Left Cover .........................................................................................................................................................3- 2
3.1.7 Front Left Cover.......................................................................................................................................................3- 2
3.1.7.1 Removing the Front Left Cover................................................................................................................................................3- 2
3.1.8 Upper Cover ............................................................................................................................................................3- 2
3.1.8.1 Before Removing the Upper Cover..........................................................................................................................................3- 2
3.1.8.2 Removing the Upper Cover .....................................................................................................................................................3- 2
3.1.9 Cartridge Cover .......................................................................................................................................................3- 2
3.1.9.1 Before Removing the Cartridge Cover Assembly ....................................................................................................................3- 2
3.1.9.2 Removing the Cartridge Cover Assembly................................................................................................................................3- 3
3.1.10 Operation Panel Unit .............................................................................................................................................3- 4
3.1.10.1 Before Removing the Control Panel.......................................................................................................................................3- 4
3.1.10.2 Removing the Control Panel..................................................................................................................................................3- 4
3.1.11 DC Controller Board ..............................................................................................................................................3- 5
3.1.11.1 Before Removing the DC Controller PCB ..............................................................................................................................3- 5
3.1.11.2 Removing the DC Controller PCB..........................................................................................................................................3- 5
3.1.12 Video Controller Board ..........................................................................................................................................3- 5
3.1.12.1 Removing the Video Controller PCB......................................................................................................................................3- 5
3.1.13 USB Board.............................................................................................................................................................3- 6
3.1.13.1 Removing the USB PCB ........................................................................................................................................................3- 6
3.1.14 Power supply board...............................................................................................................................................3- 6
3.1.14.1 Before Removing the Power Supply PCB..............................................................................................................................3- 6
3.1.14.2 Removing the Power Supply PCB .........................................................................................................................................3- 7
3.1.15 High-voltage board ................................................................................................................................................3- 7
3.1.15.1 Before Removing the High-Voltage Power Supply PCB........................................................................................................3- 7
3.1.15.2 Removing the High-Voltage PCB...........................................................................................................................................3- 8
3.1.16 Relay Board...........................................................................................................................................................3- 9
3.1.16.1 Removing the Relay PCB ......................................................................................................................................................3- 9
3.1.17 Main Body Fan.......................................................................................................................................................3- 9
3.1.17.1 Before Removing the Main Fan .............................................................................................................................................3- 9
3.1.17.2 Removing the Main Fan.........................................................................................................................................................3- 9
3.1.18 Fixing Fan............................................................................................................................................................3- 10
3.1.18.1 Before Removing the Sub Fan............................................................................................................................................. 3- 10
3.1.18.2 Removing the Sub Fan ........................................................................................................................................................3- 10
3.2 LASER EXPOSURE SYSTEM.................................................................................................................3- 11
3.2.1 Laser Scanner Unit................................................................................................................................................3- 11
3.2.1.1 Before Removing the Laser/Scanner Assembly ....................................................................................................................3- 11
3.2.1.2 Removing the Laser/Scanner Assembly................................................................................................................................3- 11
3.3 PICKUP AND FEEDING SYSTEM...........................................................................................................3- 11
3.3.1 Pickup Unit ............................................................................................................................................................3- 11
3.3.1.1 Before Removing the Cassette Pickup Assembly..................................................................................................................3- 11
3.3.1.2 Removing the Cassette Pickup Assembly .............................................................................................................................3- 11
3.3.2 Cassette Pickup Roller ..........................................................................................................................................3- 12
3.3.2.1 Removing the Cassette Pickup Roller ...................................................................................................................................3- 12
3.3.3 Manual Pickup Roller.............................................................................................................................................3- 12
3.3.3.1 Removing the Munual Pickup Roller......................................................................................................................................3- 12
3.3.4 Manual Separation Pad.........................................................................................................................................3- 13
3.3.4.1 Removing the Manual Feed Separation Pad.........................................................................................................................3- 13
3.3.5 Registration Shutter Unit .......................................................................................................................................3- 13
3.3.5.1 Removing the Registration Assembly....................................................................................................................................3- 13
3.3.6 Paper Feed Unit ....................................................................................................................................................3- 13
3.3.6.1 Before Removing the Paper feed unit....................................................................................................................................3- 13
3.3.6.2 Removing the Paper feed unit ...............................................................................................................................................3- 13
3.3.7 Main Motor.............................................................................................................................................................3- 14
3.3.7.1 Before Removing the Main Motor ..........................................................................................................................................3- 14
3.3.7.2 Removing the Main Motor......................................................................................................................................................3- 14
3.4 FIXING SYSTEM......................................................................................................................................3- 15
3.4.1 Fixing Unit..............................................................................................................................................................3- 15
Contents
3.4.1.1 Before Removing the Fixing Assembly..................................................................................................................................3- 15
3.4.1.2 Removing the Fixing Assembly..............................................................................................................................................3- 15
3.4.2 Fixing Film Unit......................................................................................................................................................3- 15
3.4.2.1 Before Removing the Fixing Film Assembly ..........................................................................................................................3- 15
3.4.2.2 Removing the Fixing Film Assembly...................................................................................................................................... 3- 15
3.4.3 Fixing Motor...........................................................................................................................................................3- 17
3.4.3.1 Before Removing the Fixing Motor ........................................................................................................................................3- 17
3.4.3.2 Removing the Fixing Motor....................................................................................................................................................3- 17
Chapter 4 MAINTENANCE AND INSPECTION
4.1 Periodically Replaced Parts .......................................................................................................................4- 1
4.1.1 Periodically Replaced Parts.....................................................................................................................................4- 1
4.2 Consumables .............................................................................................................................................4- 1
4.2.1 Consumables...........................................................................................................................................................4- 1
4.3 Periodical Service.......................................................................................................................................4- 1
4.3.1 Periodic Service.......................................................................................................................................................4- 1
4.4 Cleaning .....................................................................................................................................................4- 2
4.4.1 Cleaning...................................................................................................................................................................4- 2
4.5 User Maintenance ......................................................................................................................................4- 2
4.5.1 Adjusting the Printing Position.................................................................................................................................4- 2
Chapter 5 TROUBLESHOOTING
5.1 MEASUREMENT AND ADJUSTMENT......................................................................................................5- 1
5.1.1 Test Print..................................................................................................................................................................5- 1
5.1.1.1 Test Print Switch .....................................................................................................................................................................5- 1
5.1.2 Mechanical Adjustment............................................................................................................................................5- 1
5.1.2.1 Checking the Pressure of the Pressure Roller (nip)................................................................................................................. 5- 1
5.2 SERVICE TOOLS ......................................................................................................................................5- 2
5.2.1 Standard Tools.........................................................................................................................................................5- 2
5.2.2 Special Tools ...........................................................................................................................................................5- 2
5.2.3 Solvents and Oils.....................................................................................................................................................5- 2
5.3 ERROR CODE TABLE...............................................................................................................................5- 2
5.3.1 Error Code ...............................................................................................................................................................5- 2
Chapter 6 APPENDIX
6.1 OUTLINE OF ELECTRICAL COMPONENTS............................................................................................6- 1
6.1.1 Motor........................................................................................................................................................................6- 1
6.1.1.1 Motor........................................................................................................................................................................................6- 1
6.1.2 Fan...........................................................................................................................................................................6- 1
6.1.2.1 Fan...........................................................................................................................................................................................6- 1
6.1.3 PCBs........................................................................................................................................................................6- 2
6.1.3.1 PCBs........................................................................................................................................................................................6- 2