Service Manual & Parts List Canon imageCLASS MF7400, MF7470, MF7480;
This service manual, is the full Canon imageCLASS MF7400, MF7470, MF7480 Service Repair Manual.
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Canon imageCLASS.
You can print, zoom or read any diagram, picture or page from this Service Manual & Parts List. Every chapter on this manual is fully detailed and contain all the simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of Canon imageCLASS MF7400, MF7470, MF7480 photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:

Content for SERVICE MANUAL:
Chapter 1. INTRODUCTION
1.1 System Construction
1.1.1 Pickup/Delivery/Original Handling Accessories System Configuration
1.1.2 Printing/Transmitting Accessories System Configuration (MF7480)
1.1.3 Printing/Transmitting Accessories System Configuration (MF7470)
1.2 Product Specifications
1.2.1 Names of Parts
1.2.1.1 External View (MF7460/7470/7480)
1.2.2 Using the Machine
1.2.2.1 Turning On the Power Switch
1.2.2.2 When Turning Off the Main Power Switch
1.2.3 User Mode Items
1.2.3.1 Common Settings
1.2.3.2 Timer Settings
1.2.3.3 Adjustment/Cleaning
1.2.3.4 Report Settings
1.2.3.5 System Settings
1.2.3.6 Copy Settings
1.2.3.7 Communication Settings
1.2.3.8 Printer Settings
1.2.3.9 Address Book Settings
1.2.3.10 Recommended setting of system management information
1.2.3.11 The Reference Information of the Department ID Management
1.2.4 Maintenance by the User
1.2.4.1 User Maintenance Items
1.2.4.2 Cleaning (Touch panel type)
1.2.5 Safety
1.2.5.1 Safety of the Laser Light
1.2.5.2 CDRH Regulations
1.2.5.3 Handling the Laser Unit
1.2.5.4 Safety of Toner
1.2.5.5 Point to Note about Fire
1.2.5.6 Cautions as to the replacement and disposal of lithium battery
1.2.6 Product Specifications
1.2.6.1 Product Specifications
1.2.7 Function List
1.2.7.1 Printing Speed (MF7460/MF7470/MF7480)

Chapter 2. INSTALLATION
2.1 Making Pre-Checks
2.1.1 Selecting the Site of Installation
2.1.2 Before Starting the Work
2.2 Unpacking and Installation
2.2.1 Unpacking and Removing the Packaging Materials
2.2.2 Installing the Toner Cartridge
2.2.3 Setting the Cassettes
2.2.4 Attaching the Ferrite Core
2.2.5 Checking the Image Quality
2.2.6 Setting the Date and Time
2.2.7 Attaching Other Parts
2.3 Checking the Connection to the Network
2.3.1 Checking the Network Connection
2.4 Connection to Telephone Line
2.4.1 Connecting to the Telephone Line
2.4.2 Basic Settings
2.4.3 Communication Test
2.5 Flow of Accessory Installation
2.5.1 Flow of Accessary Installation

Chapter 3. MAIN CONTROLLER
3.1 Overview/Configuration
3.1.1 Construction and Mechanisms
3.2 Outline of the Electrical Circuitry
3.2.1 Image Processor PCB
3.3 Image Processing
3.3.1 Overview of the Image Flow
3.3.2 Construction of the Image Processing Module
3.3.3 Reader Unit Input Image Processing
3.3.4 Compression/ Extesion/ Editing Block
3.3.5 Printer unit Output Image Processing
3.4 Image Data Flow
3.4.1 Flow of Image Data According to Copy Functions
3.4.2 Flow of Image Data for the SEND Function
3.4.3 Flow of Image Data for the Fax Transmission
3.4.4 Flow of Image Data for the Fax Reception Function
3.4.5 Flow of Image Data for the PDL Function
3.5 Parts Replacement Procedure
3.5.1 Main Controller PCB
3.5.1.1 Preparation for Removing the Image Processor PCB
3.5.1.2 Removing the Image Processor PCB
3.5.2 SDRAM
3.5.2.1 Preparation for Removing the SDRAM
3.5.2.2 Removing the SDRAM

Chapter 4. ORIGINAL EXPOSURE SYSTEM
4.1 Basic Constraction
4.1.1 Specifications, Control Methods, and Functions
4.1.2 Major Components
4.1.3 Control System Configuration
4.1.4 Reader Controller PCB
4.2 Basic Sequence
4.2.1 Basic Sequence at Power-on
4.2.2 Basic Sequence after Depression of Start Key (Book mode, One Sheet of original)
4.2.3 Basic Sequence after Depression of Start Key (ADF Mode, One Sheet of Original)
4.3 Various Control
4.3.1 Controlling the Scanner Drive System
4.3.1.1 Outline
4.3.1.2 Reader Motor Control
4.3.2 Contact Image Sensor (CIS)
4.3.2.1 Outline
4.3.2.2 Analog Control Performed by the CIS
4.3.3 Enlargement/Reduction
4.3.3.1 Magnification Change in Vertical Scan Direction
4.3.3.2 Magnification Change in Horizontal Scan Direction
4.3.4 Detecting the Size of Originals
4.3.4.1 Outline
4.3.4.2 Outline of Original Size Detection
4.3.5 Dirt Sensor Control
4.3.5.1 Outline
4.3.6 Image Processing
4.3.6.1 Outline
4.3.6.2 CMOS Sensor Drive
4.3.6.3 CMOS Sensor Output Gain Correction and Offset Correction
4.3.6.4 CMOS Sensor Output A/D Conversion
4.3.6.5 Shading Correction (Outline)
4.3.6.6 Shading Adjustment
4.3.6.7 Shading Correction
4.4 Parts Replacement Procedure
4.4.1 Copyboard Glass
4.4.1.1 Removing the Copyboard glass
4.4.1.2 Procedure after Replacing the Copyboard Glass (Model equipped with ADF)
4.4.1.3 Removing the ADF Reading Glass
4.4.2 Reader Controller PCB
4.4.2.1 Removing the Reader Controller PCB
4.4.3 Reader Motor
4.4.3.1 Removing the Scanner Motor
4.4.4 Contact Sensor
4.4.4.1 Removing the Contact Image Sensor (CIS)
4.4.4.2 Procedure after Replacing the CIS(Touch panel type)
4.4.5 Copyboard Cover Open/Close Sensor
4.4.5.1 Removing the Copyboard Cover Open/Close Sensor (Front/Rear)
4.4.6 Contact Sensor HP Sensor
4.4.6.1 Removing the Contact Sensor HP Sensor
4.4.7 Original Size Sensor
4.4.7.1 Removing the Original Sensor (Vertical Scan Direction)
4.4.7.2 Removing the Original Sensor (Horizontal Scan Direction)
4.4.8 Reader Heater (option)
4.4.8.1 Removing the Reader Heater (Right)
4.4.8.2 Removing the Reader Heater (Left)

Chapter 5. LASER EXPOSURE
5.1 Overview/Configuration
5.1.1 Overview
5.1.2 Specifications and Control Mechanism
5.1.3 Main Components
5.1.4 Control System Configuration
5.2 Controlling the Laser Activation Timing
5.2.1 Laser Emission ON/OFF Control
5.2.2 Horizontal Synchronization Control
5.3 Controlling the Intensity of Laser Light
5.3.1 Automatic Photocurrent Control (APC)
5.4 Controlling the Laser Scanner Motor
5.4.1 Laser Scanner Motor Control
5.5 Controlling the Laser Shutter
5.5.1 Laser Shutter Control
5.6 Parts Replacement Procedure
5.6.1 Laser/Scanner Unit
5.6.1.1 Removing the Laser Scanner Unit

Chapter 6. IMAGE FORMATION
6.1 Overview/Configuration
6.1.1 Specifications of Image Formation System
6.1.2 Major Components of Image Formation System
6.2 Image Formation Process
6.2.1 Image Formation Process
6.3 Basic Sequence
6.3.1 Basic Sequence of Operation
6.4 Driving and Controlling the High-Voltage System
6.4.1 Outline
6.4.2 Primary Charging Bias Control
6.4.3 Developing Bias Control
6.5 Secondary Transfer Mechanism
6.5.1 Outline
6.5.2 Transfer Roller Bias Control
6.5.3 Static Eliminator Bias Control
6.6 Parts Replacement Procedure
6.6.1 Transfer Charging Roller
6.6.1.1 Removing the Transfer Charging Roller

Chapter 7. PICKUP AND FEED SYSTEM
7.1 Overview/Configuration
7.1.1 Specifications/Configuration/Operation Methods
7.1.2 Locations of Main Units
7.1.3 Roller Layout Drawing
7.1.4 Paper Path Drawing (Printer on its own)
7.1.5 Paper Path Drawing (Finisher)
7.1.6 Paper Path Drawing (Duplex Unit/Finisher)
7.1.7 Paper Path Drawing (Duplex Unit)
7.1.8 Paper Path Drawing (Duplex/Inner 2Way Tray)
7.1.9 Paper Path Drawing(Inner 2Way Tray)
7.1.10 Sensor Layout Drawing
7.2 Detection Jams
7.2.1 Delay Jams
7.2.1.1 Delay Jam in Pickup Assembly
7.2.1.2 Delay Jam in Delivery Assembly (Paper Leading Edge Jam at First Delivery Sensor/Wound
Paper Jam at Fixing Assembly)
7.2.2 Stationary Jams
7.2.2.1 Stationary Jam in Pickup Assembly
7.2.2.2 Stationary Jam in Delivery Assembly (Paper Trailing Edge Stationary Jam at First Delivery
Sensor/Stationary Jam at First Delivery Sensor)
7.2.3 Other Jams
7.2.3.1 Door Open Jam
7.3 Cassette Pickup Unit
7.3.1 Overview
7.3.2 Cassette Pickup Operation
7.3.3 Cassette Paper Size Detection
7.4 Manual Feed Pickup Unit
7.4.1 Overview
7.4.2 Post-pickup Control after Multi Manual Feed Pickup
7.5 Parts Replacement Procedure
7.5.1 Cassette Pickup Assembly
7.5.1.1 Removing the Cassette Pickup Assembly
7.5.2 Cassette Paper Sensor
7.5.2.1 Removing the Cassette Paper Presence/Absence Sensor
7.5.3 Cassette Size Sensor
7.5.3.1 Removing the Paper Size Detection Switches
7.5.4 Cassette Retry Paper Sensor
7.5.4.1 Removing the Retry Sensor
7.5.5 Cassette Pickup Solenoid
7.5.5.1 Removing the Cassette Pickup Solenoid
7.5.6 Separation Roller
7.5.6.1 Removing the Feed and Separation Rollers
7.5.7 Manual Pickup Roller
7.5.7.1 Removing the Multifeeder Pickup Roller
7.5.8 Manual Feed Tray Paper Sensor
7.5.8.1 Removing the Multifeeder Paper Presence/Absence Sensor
7.5.9 Manual Pickup Solenoid
7.5.9.1 Removing the Multifeeder Pickup Solenoid
7.5.10 Registration Roller
7.5.10.1 Removing the Registration Roller
7.5.11 Registration Clutch
7.5.11.1 Removing the Registration Clutch
7.5.12 Separation Pad
7.5.12.1 Removing the Separation Pad
7.5.13 Pickup Roller
7.5.13.1 Removing the Cassette Paper Pickup Roller

Chapter 8. FIXING SYSTEM
8.1 Overview/Configuration
8.1.1 Specifications, Control Mechanisms and Functions
8.1.2 Major Components
8.2 Various Control Mechanisms
8.2.1 Controlling the Speed of the Fixing Film
8.2.1.1 Controlling the Fixing Film Speed
8.2.2 Controlling the Fixing Film Temperature
8.2.2.1 Outline
8.2.2.2 Controlling the Fixing Film Temperature
8.2.2.3 Target Temperatures by Mode
8.2.3 Detecting the Passage Paper
8.2.3.1 Detecting the Passage of Paper
8.3 Protection Function
8.3.1 Protective Functions
8.4 Parts Replacement Procedure
8.4.1 Fixing Unit
8.4.1.1 Removing the Fixing Unit
8.4.2 Fixing Film Unit
8.4.2.1 Removing the Fixing Film Unit
8.4.3 Fixing Pressure Roller
8.4.3.1 Removing the Pressure Roller
8.4.4 Fixing Delivery Paper Sensor
8.4.4.1 Removing the Fixing Delivery Sensor
8.4.5 Fixing Film Sensor
8.4.5.1 Removing the Fixing Film Sensor

Chapter 9. EXTERNAL AND CONTROLS
9.1 Control Panel
9.1.1 Overview
9.2 Fan
9.2.1 Overview
9.2.2 Fan Control
9.3 Power Supply
9.3.1 Power Supply
9.3.1.1 Outline
9.3.1.2 Rated Output of the Power Supply PCB
9.3.2 Protection Function
9.3.2.1 Protective Mechanisms
9.4 Parts Replacement Procedure
9.4.1 Rear Cover
9.4.1.1 Removing the Rear Cover
9.4.2 External Cover
9.4.2.1 Removing the Lower-left Cover
9.4.3 Upper Right Cover
9.4.3.1 Removing the Right Cover (Upper)
9.4.4 Lower Right Cover
9.4.4.1 Removing the Right Cover (Lower)
9.4.5 Left Rear Cover
9.4.5.1 Removing the Rear Left Cover
9.4.6 Reader Front Cover
9.4.6.1 Removing the Reader Front Cover
9.4.7 Reader Rear Cover
9.4.7.1 Removing the Reader Rear Cover
9.4.8 Delivery Tray
9.4.8.1 Removing the Delivery Tray
9.4.9 Left Door
9.4.9.1 Removing the Left Door (Non Duplex Unit Type)
9.4.9.2 Removing the Left Door (With Duplex Unit Type)
9.4.10 Main Drive Unit
9.4.10.1 Removing the Main Drive Unit
9.4.11 Fixing/Duplex Drive Unit
9.4.11.1 Removing the Fixing Drive Unit
9.4.12 Operation Panel Unit
9.4.12.1 Removing the Operation Panel Unit (Touch Panel Type)
9.4.13 DC Controller PCB
9.4.13.1 Removing the DC Controller PCB
9.4.14 Powwer Supply PCB
9.4.14.1 Removing the Main Power Supply PCB
9.4.15 Option Power Supply PCB
9.4.15.1 Removing the Option Power Supply PCB
9.4.16 HVT PCB
9.4.16.1 Removing the HVT PCB
9.4.17 Main Drive Motor
9.4.17.1 Removing the Main Motor
9.4.18 Fixing Drive Motor
9.4.18.1 Removing the Fixing Unit Drive Motor
9.4.19 Fixing Heat Discharge Fan
9.4.19.1 Removing the Fixing Heat Discharge Fan (Non Duplex Unit Type)
9.4.19.2 Removing the Fixing Heat Discharge Fan (With Duplex Unit Type)
9.4.20 Fan Filter
9.4.20.1 Removing the Fan Filter (Non Duplex Unit)
9.4.20.2 Removing the Fan Filter (With Duplex Unit Type)

Chapter 10. RDS
10.1 RDS
10.1.1 Overview
10.1.2 Application Operation Mode
10.1.3 Communication Test
10.1.4 Communication Log
10.1.5 Detail of Communication Log
10.1.6 Initialization of e-RDS
10.1.7 SOAP Communication Function
10.1.8 Retransmission at the time of SOAP Transmission Error
10.1.9 e-RDS Setting Screen
10.1.10 Report Output of Communication Error Log
10.1.11 Sleep Operation
10.1.12 Alarm Filtering, Alert Filtering
10.1.13 CA Certificate
10.1.14 Settings of Network Connection (Installation/Maintenance)
10.1.15 Settings of e-RDS (Installation/Maintenance)
10.1.16 Troubleshooting
10.1.17 Error Message list

Chapter 11. MAINTENANCE AND INSPECTION
11.1 Periodically Replaced Parts
11.1.1 Overview
11.1.2 Reader Unit
11.1.3 Printer Unit
11.2 Consumables
11.2.1 Overview
11.2.2 Reader Unit
11.2.3 Printer Unit
11.3 Periodical Service
11.3.1 Scheduled Servicing

Chapter 12. MEASUREMENT AND ADJUSTMENTS
12.1 Scanning System
12.1.1 Procedure after Replacing the CIS (Touch panel type)
12.1.2 Procedure after Replacing the Copyboard Glass (With ADF)
12.2 Image Formation System
12.2.1 Procedure after Replacing the Developing Assembly
12.3 Electrical Adjustments
12.3.1 Procedure after Replacing the Image Processor PCB (Touch panel
12.3.2 Procedure after Replacing the USB Memory (Touch panel type)
12.3.3 Actions to Take before All Clearing (Backing up the User Data)

Chapter 13. CORRECTING FAULTY IMAGES
13.1 Initial Checkup
13.1.1 Site Environment
13.1.2 Checking the Paper
13.1.3 Checking the Placement of Paper
13.1.4 Checking the Durables
13.1.5 Checking the Units and Functional Systems
13.1.6 Others
13.2 Outline of Electrical Components
13.2.1 Cluth/Solenoid
13.2.1.1 List of Clutches/Solenoids
13.2.2 Motor
13.2.2.1 List of Motors
13.2.3 Fan
13.2.3.1 List of Fans
13.2.4 Sensor
13.2.4.1 List of Sensors
13.2.5 Switch
13.2.5.1 List of Switches
13.2.6 Lamps, Heaters, and Others
13.2.6.1 List of Lamps, Heaters, and Others
13.2.7 PCBs
13.2.7.1 List of PCBs

Chapter 14. ERROR CODE
14.1 Error Code Table
14.1.1 List of Error Codes
14.2 Error Code Details
14.2.1 Error Code Details
14.3 Jam Code
14.3.1 Jam Codes (Related to Printer Unit)
14.3.2 Jam Codes (Related to Finisher)
14.3.3 Jam Codes (Related to ADF)
14.3.4 Jam Codes (Related to Duplex Unit)
14.3.5 Jam Codes (Related to Inner 2-way Tray)
14.4 Finisher Error Codes
14.4.1 Error Code Details
14.5 Fax Error Codes
14.5.1 Outline
14.5.1.1 Error Code Outline
14.5.2 User Error Code
14.5.2.1 User Error Code
14.5.3 Service Error Code
14.5.3.1 Service Error Code

Chapter 15. SERVICE MODE
15.1 Outline
15.1.1 Outline of Service Mode
15.1.2 Using the Mode (Touch Panel Type)
15.2 Default Settings
15.2.1 Service Mode Menus
15.3 Service Soft Switch Settings (SSSW)
15.3.1 Outline
15.3.1.1 Bit Switch Composition
15.3.2 SSSW-SW01:
15.3.2.1 List of Functions
15.3.2.2 Detailed Discussions of Bit 0
15.3.3 SSSW-SW03
15.3.3.1 List of Functions
15.3.3.2 Detailed Discussions of Bit 7
15.3.4 SSSW-SW04
15.3.4.1 List of Functions
15.3.4.2 Detailed Discussions of Bit 2
15.3.4.3 Detailed Discussions of Bit 3
15.3.4.4 Detailed Discussions of Bit 4
15.3.4.5 Detailed Discussions of Bit 5
15.3.4.6 Detailed Discussions of Bit 6
15.3.4.7 Detailed Discussions of Bit 7
15.3.5 SSSW-SW05
15.3.5.1 List of Functions
15.3.5.2 Detailed Discussions of Bit 1
15.3.5.3 Detailed Discussions of Bit 2
15.3.6 SSSW-SW12
15.3.6.1 List of Functions
15.3.7 SSSW-SW13
15.3.7.1 List of Functions
15.3.7.2 Detailed Discussions of Bit 2
15.3.8 SSSW-SW14
15.3.8.1 List of Functions
15.3.8.2 Detailed Discussions of Bit 2
15.3.8.3 Detailed Discussions of Bit 4
15.3.9 SSSW-SW25
15.3.9.1 List of Functions
15.3.9.2 Detailed Discussions of Bit 0
15.3.9.3 Detailed Discussions of Bit 2
15.3.10 SSSW-SW28
15.3.10.1 List of Functions
15.3.10.2 Detailed Discussions of Bit 0
15.3.10.3 Detailed Discussions of Bit 1
15.3.10.4 Detailed Discussions of Bit 2
15.3.10.5 Detailed Discussions of Bit 3
15.3.10.6 Detailed Discussions of Bit 4
15.3.10.7 Detailed Discussions of Bit 5
15.3.11 SSSW-SW30
15.3.11.1 List of Functions
15.3.11.2 Detailed Discussions of Bit 5
15.3.12 SSSW-SW33
15.3.12.1 List of Functions
15.3.12.2 Detailed Discussions of Bit 0
15.3.12.3 Detailed Discussions of Bit 1
15.3.12.4 Detailed Discussions of Bit 2
15.3.12.5 Detailed Discussions of Bit 3 – Bit4
15.3.13 SSSW-SW34
15.3.13.1 List of Functions
15.3.13.2 Detailed Discussions of Bit 0
15.3.13.3 Detailed Discussions of Bit 1
15.4 Menu Switch Settings (MENU)
15.4.1 Menu Switch Composition
15.4.2
15.4.3
15.4.4
15.4.5
15.4.6
15.4.7
15.5 Numeric Parameter Settings (NUMERIC Param.)
15.5.1 Numerical Parameter Composition
15.5.2
15.5.3
15.5.4
15.5.5
15.5.6
15.5.7
15.5.8
15.5.9

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