Canon NP7120 Manuals

Manuals and User Guides for Canon NP7120. We have 2 Canon NP7120 manuals available for free PDF download: Service Manual

Canon NP7120 Service Manual

Canon NP7120 Service Manual (426 pages)

Brand: Canon | Category: Printer | Size: 6.14 MB

Table of Contents

Table of Contents

7
- Chapter 1 General Description
  
  13
  - Features
    13
  - Specifications
    14
    
    Copier
    14
    
    II. Specifications
    14
    
    Adf
    18
  - Names of Parts
    20
    
    External View
    20
    
    ADF Type
    21
    
    Cross Section
    23
  - Using the Machine
    25
    
    Control Panel
    25
    
    User Mode
    27
    
    Soiled Images
    28
  - Routine Maintenance by the User
    28
    
    Cleaning by Hand
    29
    
    If Jams Occur Frequently
    29
  - Image Formation
    31
    
    Outline
    31
Chapter 2 Basic Operation

33
- Basic Operations
  35
  - Functional Construction
    35
- Chapter 3 Exposure System
  
  35
Chapter 3 Exposure System

47
- I. Operations
  47
- Operations
  49
  - Outline
    49
  - Varying the Reproduction Ratio
    50
  - Lens Drive System
    51
  - Scanner Drive System
    52
- Controlling the Scanning Lamp
  57
  - Exposure System
    57
  - Disassembly/Assembly
    61
- Scanner Drive Assembly
  62
  - Outline of the Scanner Drive Cable
    65
- Lens Drive Assembly
  80
- Exposure System
  86
  - Removing the Thermal Fuse
    89
Chapter 4 Image Formation System

91
- Image Formation System
  91
- Chapter 5 Pick-Up/Feeding System
  
  119
  - Developing Assembly/Cleaning Assembly
    119
    
    Roller
    120
- Chapter 6 Fixing System
  
  120
  - Outline
    119
  - Operations
    120
    
    Detecting the Level of Toner
    120
    
    Detecting Waste Toner
    122
    
    Primary Charging Roller Cleaning Control
    123
    
    Primary Charging Roller
    124
    
    Disassembly/Assembly
    125
    
    III. Disassembly/Assembly
    125
    
    Drum Unit
    126
    
    Removing the Drum Unit
    127
    
    After Replacing the Drum Unit
    129
    
    Transfer Charging Assembly
    130
    
    Blank Exposure
    131
    
    Developing Assembly
    135
Chapter 5 Pick-Up/Feeding System

143
- Outline
  145
- Pickup/Feeding System
  145
- Controlling the Pickup Roller
  146
- Controlling the Movement of Paper
  150
- Detecting Jams
  152
  - Delivery Delay Jam
    156
  - Delivery Stationary Jam
    156
- Disassembly/Assembly
  157
  - II. Disassembly/Assembly
    157
  - Pickup Assembly
    158
  - Multifeeder Assembly
    165
  - Removing the Separation Pad
    167
  - Feeding Assembly
    168
  - Registration Roller Assembly
    169
  - Assembly
    169
  - Removing the Registration Roller
    172
  - Delivery Assembly
    174
  - B. Controlling the Fixing Temperature
    177
- Disassembly/Assembly
  187
  - Fixing Assembly
    188
Chapter 7 Externals/Auxiliary Mechanisms

193
- Fans
  195
- Power Supply System
  197
- III. Disassembly/Assembly
  201
  - External Covers
    202
  - Control Panel
    209
  - Copyboard Glass
    210
  - D. Main Motor/Main Drive Assem Bly
    211
  - Bly
    213
  - Electrical System
    215
    
    Supply Pcb
    216
    
    Power Supply Pcb
    219
Chapter 8 Adf

221
- Adf
  221
- Adf
  223
- Outline
  223
- B Basic Construction
  224
- Basic Operations
  226
- Detecting an Original
  228
- Pickup Operation
  230
- Delivery
  234
- Controlling the Pickup Motor
  236
- Motor
  236
- Controlling the Belt Motor
  237
- I. Detecting Original Jams
  238
- Power Supply
  239
- Disassembly/Assembly
  240
- II. Disassembly/Assembly
  240
- Removing the ADF
  241
- External Covers
  243
- Drive System
  245
- D. Feeding System
  248
- Registration Roller
  250
- Electrical System
  255
- Chapter 9 Installation
  
  259
  - Selecting the Site
    259
  - Unpacking and Installation
    260
    
    Installing the Drum Unit
    264
    
    Connecting the Power Cord
    271
    
    Adjusting the Machine
    272
    
    B. Placing Copy Paper
    276
  - III. Moving the Machine
    279
- Chapter 10 Maintenance and Servicing
  
  281
  - I. Periodically Replaced Parts
    281
  - II. Durables and Consumables
    281
  - Durables and Consumables
    283
- Chapter 11 Troubleshooting
  
  287
  - Periodically Replaced Parts
    283
  - Maintenance and Inspection
    289
    
    Image Adjustment Basic Procedure
    289
    
    Points to Note for Servicing
    290
  - Standards and Adjustments
    291
    
    Mechanical
    291
    
    Adf
    316
C. Electrical

327
- Electrical
  327
- APVC Measurement Current Correction (IP_OFST)
  333
- Voltage Correction for Measurement of APVC (PW_OFST)
  334
- Current Correction for Measurement of APVC (IP_ADJ)
  335
- Pre-Exposure Lamp Output Adjustment (PREX_LP)
  336
- Ratio Fine Adjustment (LENS_ADJ)
  336
- Checking the Photointerrupters
  337
- Troubleshooting Image Faults
  338
  - Making Initial Checks
    338
  - Sample Image Faults
    342
  - Troubleshooting Image Faults
    343
    
    The Back of the Copy Is Soiled
    346
    
    The Copy Has a Fixing Fault
    347
    
    The Copy Has a Blurred Image
    348
    
    The Copy Has Horizontal Fogging
    349
    
    The Copy Is Blank
    350
    
    The Copy Is Solid Black
    350
- Troubleshooting Malfunctions
  351
  - Troubleshooting
    351
    
    Malfunctions
    355
    
    The Registration Roller Fails to Rotate
    359
    
    The Scanner Fails to Move Forward
    359
    
    The Scanning Lamp Fails to Turn on
    360
    
    The Fixing Heater Fails to Turn on
    361
- Troubleshooting Feeding Problems
  363
  - Copy Paper Jam
    363
  - Pickup Assembly
    364
  - B. Faulty Feeding
    366
  - VI. Arrangement and Functions of Electrical Parts
    367
  - A. Sensors and Solenoids
    367
  - B. Switches
    368
  - C. Lamp, Heater, Motor, Etc
    369
  - D. Pcbs
    370
- E. Adf
  371
  - Check Pins by PCB
    372
- A. Outline
  374
  - Using Service Mode
    374
  - Ending Service Mode
    375
  - Adjustment Mode (30)
    377
  - Operation/Inspection Mode (40)
    378
  - Machine Settings Mode (50)
    379
  - Counter Mode (60)
    379
- VII. Service Mode
  374
- Self Diagnosis
  380
Appendix

383
- General Timing Chart
  385
- Signals and Abbreviations
  387
- General Circuit Diagram
  389
- DC Controller Circuit Diagram
  391
- Adf Controller Circuit Diagram
  399
- Composite Power Supply Circuit Diagram
  404
- Control Panel Circuit Diagram
  413
- Ae Sensor Circuit Diagram
  415
- Sensor Circuit Diagram
  416
- Noise Filter Circuit Diagram
  417
- High Voltage Contact Circuit Diagram
  418
- BLANK EXPOSURE (Front) CIRCUIT DIAGRAM
  419
- BLANK EXPOSURE (Rear) CIRCUIT DIAGRAM
  420
- Pre-Exposure Circuit Diagram
  421
- Special Tools
  422
- Solvents/Oils
  423

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Canon NP7120 Service Manual

Canon NP7120 Service Manual (92 pages)

Brand: Canon | Category: Printer | Size: 1.08 MB

Table of Contents

Table of Contents

5
- Chapter 1 Maintenance and Inspection
  
  7
  - Periodically Replaced Parts
    7
  - Durables and Consumables
    7
  - Scheduled Servicing
    7
  - Mechanical
    11
  - Adf
    36
C. Electrical

47
- APVC Measurement Current Correction (IP_OFST)
  53
- Voltage Correction for Measurement of APVC (PW_OFST)
  54
- Current Correction for Measurement of APVC (IP_ADJ)
  55
- Pre-Exposure Lamp Output Adjustment (PREX_LP)
  56
- Ratio Fine Adjustment (LENS_ADJ)
  56
- Chapter 3 Arrangement and Functions of
  
  59
  - Sensors and Solenoids
    59
  - Switches
    60
  - Lamp, Heater, Motor, Etc
    61
  - Pcbs
    62
  - Outline
    67
- Chapter 4 Service Mode
  
  67
  - Operation/Inspection Mode (40)
    71
  - Machine Settings Mode (50)
    72
  - Counter Mode (60)
    72
- Chapter 5 Self Diagnosis
  
  73
- Appendix
  
  83
  - Special Tools
    83
  - Solvents/Oils
    84
  - Specifications
    85

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