Canon PC940 Manuals

Manuals and User Guides for Canon PC940. We have 2 Canon PC940 manuals available for free PDF download: Service Manual, Service Handbook

Canon PC940 Service Manual

Canon PC940 Service Manual (393 pages)

Service Manual

Brand: Canon | Category: Copier | Size: 4.18 MB

Table of Contents

Table of Contents

7
- Chapter 1 General Description
  13
- Features
  13
- Specifications
  14
  - II. Specifications
    14
  - Copier
    14
  - Adf
    20
- Names of Parts
  22
  - External View
    22
  - Cross Section
    25
- Using the Machine
  27
  - Control Panel
    27
- Routine Maintenance by the User
  29
  - If Jams Occur Frequently
    30
- Image Formation
  32
  - Outline
    32
Chapter 2 Basic Operation

35
Chapter 3 Exposure System

49
- Operations
  51
  - Outline
    51
  - Varying the Reproduction Ratio
    52
  - Lens Drive System
    53
  - Scanner Drive System
    54
- Controlling the Scanning Lamp
  59
- Lamp
  59
  - Exposure System
    59
  - II. Exposure System
    59
  - Disassembly/Assembly
    62
- Scanner Drive Assembly
  63
  - Outline of the Scanner Drive Cable
    66
- Lens Drive Assembly
  81
- Exposure System
  87
Chapter 4 Image Formation System

93
- Image Formation System
  93
  - I. Image Formation System
    95
  - Outline
    95
  - Timing Chart for the Image Formation System
    97
  - Controlling the Primary
    98
    
    Charging Roller Bias
    98
  - Controlling the Transfer Roller Bias
    102
  - Controlling the Developing/Separation Static Eliminator Bias
    105
  - Measuring the Density of Originals
    110
  - Controlling the Side Blanking Mechanism
    115
  - Disassembly/Assembly
    116
  - Cartridge
    117
  - Transfer Charging Assembly
    119
  - Blank Exposure
    120
Chapter 5 Pick-Up/Feeding System

123
- Pickup/Feeding System
  125
  - Outline
    125
  - Controlling the Pickup Roller
    127
  - Controlling the Movement of Paper
    133
  - Detecting Jams
    136
    
    Delivery Delay Jam
    141
    
    Delivery Stationary Jam
    141
  - Disassembly/Assembly
    142
  - II. Disassembly/Assembly
    142
  - Pickup Assembly
    143
  - Multifeeder Assembly
    152
  - Removing the Separation Pad
    154
  - Single-Feeder Assembly
    155
  - Feeding Assembly
    157
  - Registration Roller Assembly
    158
  - Delivery Assembly
    160
  - B. Controlling the Fixing Temperature
    163
- Chapter 6 Fixing System
  165
- Temperature
  167
  - Fixing Assembly
    175
Chapter 7 Externals/Auxiliary Mechanisms

179
- Fans
  181
- Power Supply System
  183
  - Outline of the Power Supply System
    183
  - Power Supply Circuit
    184
  - Detecting an Error on the Composite Power Supply PCB
    186
  - Protecting the Power Supply Circuit
    186
  - Disassembly/Assembly
    187
  - External Covers
    188
  - Control Panel
    195
  - Copyboard Glass
    196
  - Assembly
    197
  - D. Main Motor/Main Drive Assembly
    197
  - Electrical System
    201
Chapter 8 Adf

205
- Adf
  205
- Adf
  207
- Outline
  207
- B Basic Construction
  208
- Basic Operations
  210
- Detecting an Original
  212
- Pickup Operation
  214
- Delivery
  218
- Controlling the Pickup Motor
  220
- Motor
  220
- Controlling the Belt Motor
  221
- I. Detecting Original Jams
  222
- Power Supply
  223
- Disassembly/Assembly
  224
- II. Disassembly/Assembly
  224
- A. Removing the ADF
  225
- External Covers
  227
- Drive System
  229
- Feeding System
  232
- Electrical System
  239
- Chapter 9 Installation
  243
- Selecting a Site
  243
- Unpacking and Installation
  244
  - B. Placing Copy Paper
    251
- III. Moving the Machine
  254
Chapter 10 Maintenance and Servicing

257
Chapter 11 Troubleshooting

264
- Maintenance and Inspection
  268
  - Image Adjustment Basic Procedure
    268
  - Points to Note for Servicing
    269
- Standards and Adjustments
  270
  - Mechanical
    270
  - Adf
    295
  - Electrical
    306
  - Checking the Photointerrupters
    312
- Troubleshooting Image Faults
  313
  - Making Initial Checks
    313
  - Troubleshooting Image Faults
    318
    
    The Back of the Copy Is Soiled
    321
    
    The Copy Has a Fixing Fault
    322
    
    The Copy Has a Blurred Image
    323
    
    The Copy Has Horizontal Fogging
    323
    
    The Copy Is Blank
    324
    
    The Copy Is Solid Black
    325
- Troubleshooting Malfunctions
  326
  - Troubleshooting
    326
    
    Malfunctions
    326
    
    Malfunctions
    331
    
    The Registration Roller Fails to Rotate
    336
    
    The Scanner Fails to Move Forward
    336
    
    The Scanning Lamp Fails to Turn on
    337
    
    The Fixing Heater Fails to Turn on
    338
  - Troubleshooting Feeding Problems
    340
    
    Copy Paper Jam
    340
    
    Pickup Assembly
    341
    
    Faulty Feeding
    343
  - Arrangement and Functions of Electrical Parts
    344
    
    Sensors and Solenoids
    344
    
    Switches
    345
    
    Lamp, Heater, Motor, Etc
    346
    
    Pcbs
    347
    
    Adf
    348
    
    Variable Resistors (VR) and Check Pins by PCB
    349
  - Self Diagnosis
    351
- Appendix
  354
  - General Timing Chart
    356
    
    B. Signals and Abbreviations
    358
    
    C. General Circuit Diagram
    360
  - DC Controller Circuit Diagram
    362
  - E. Adf Controller Circuit Diagram
    370
  - Composite Power Supply Circuit Diagram
    375
  - Control Panel Circuit Diagram
    382
  - Ae Sensor Circuit Diagram
    384
  - Sensor Circuit Diagram
    385
  - Noise Filter Circuit Diagram
    386
  - High Voltage Contact Circuit Diagram
    387
  - BLANK EXPOSURE (Front) CIRCUIT DIAGRAM
    388
  - BLANK EXPOSURE (Rear) CIRCUIT DIAGRAM
    389
  - Special Tools
    390
    
    Solvents/Oils
    391

Canon PC940 Service Handbook

Canon PC940 Service Handbook (88 pages)

Brand: Canon | Category: Copier | Size: 1.06 MB

Table of Contents

Table of Contents
5
Chapter 1 Maintenance and Inspection

7
Chapter 2 Standards and Adjustments

15
Chapter 3 Arrangement and Functions of

51
- Pcbs
  51
- Adf
  63
- Variable Resistors (VR) and Check Pins by PCB
  64
  - DC Controller Pcb
    64
  - Composite Power Supply Pcb
    64
Chapter 4 Self Diagnosis

77
- Special Tools
  77
APPENDIX Solvents/Oils

78
- Specifications
  79

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