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All in One Printer
MF4400 Series
Service manual
Canon MF4400 Series Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Single-Sided Models
CDRH Provisions
Laser Safety
Safety Precautions
About Laser Beams
Handling Laser Scanner Unit
About Toner
Handling Adhered Toner
Notes on Assembly/Disassembly
Notes on Handling Lithium Battery
Toner Safety
Product Lineups
Product Overview
Main Unit
Options
Features
Main Unit Specifications
Product Specifications
FAX Specifications
SADF/DADF Specifications
External View
Mf4410/Mf4412)
Mf4420N/Mf4410/Mf4412/D520
Name of Parts
Mf4580Dn/D550
Cross Section
Mf4410/Mf4412/Mf4420N/Mf4430/Mf4450/Mf4452/Mf4453
Mf4550D/Mf4553D/Mf4554D/Mf4570Dn/Mf4580Dn/D520/D550
Control Panel
Technical Overview
Basic Configuration
Basic Sequence
Basic Sequence of Operation
Configuration Function
Print Sequence
Controller System
Engine Controller
General Description
Main Controller
At Parts Replacement
Maintenance
Notes on Service Works
Service Works
Document Exposure System
Document Exposure/Feeder System
Major Components
Overview
Document Feeder System
Overview
Original Detection
Various Control
At Parts Replacement
Maintenance
Notes on Service Works
Service Works
Laser Exposure System
Overview
Controlling the Laser Activation Timing
Horizontal Sync Control
Laser ON/OFF Control
Auto Power Control (APC)
Laser Control
Laser Scanner Motor Control
Overview
At Parts Replacement
Maintenance
Notes on Service Works
Scanner Motor Fault Detection
Service Works
Image Formation System
Overview
Overview/Configuration
Print Process
Static Latent Image Formation Block
Development Block
Transfer Block
Drum Cleaning Block
Fixing Block
Generating Developing Bias
Generating Primary Charging Bias
Generating Transfer Bias
High-Voltage Control
Overview
Operation When Toner Level Is Low/Nearly out
Specification of Toner Level Display
Toner Cartridge
Toner Level Detection
At Parts Replacement
Maintenance
Notes on Service Works
Service Works
Toner Cartridge Absence/Presence Detection
Fixing System
Main Parts of Fixing Assembly
Overview
Overview/Configuration
Fixing Temperature Control
Protective Functions
Various Control Mechanisms
Failure Detection
At Parts Replacement
Maintenance
Notes on Service Works
Other Functions
Service Works
Throughput down Control
Overview
Pickup and Feeding System
Detecting Jams
Jam Detection Outline
Delay Jams
Delivery Delay Jam
Delivery Stationary Jam
Stationary Jams
Other Jams
At Parts Replacement
Maintenance
Notes on Service Works
Service Works
External and Controls System
Power Supply
Protective Functions
At Parts Replacement
Maintenance
Notes on Service Works
Service Works
Consumables
Periodical Services
Periodically Replaced Parts
Cleaning
Periodical Service
Printer
Scheduled Servicing
Dadf
Reader ADF
Sadf
Disassembly/Assembly
List of Parts
External View
List of External Cover/Interior: DADF Models (Mf4580Dn/D550)
List of External Cover/Interior: SADF Models (Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/Mf4450/Mf4452/Mf4453/ MF4430)
(Mf4420N/Mf4410/Mf4412/D520)
List of External Cover/Interior: Copyboard Models
(Mf4580Dn)
Lists of DADF Unit and Reader Unit: FAX Models
Main Unit
Lists of DADF Unit and Reader Unit: Models Without FAX (D550)
Lists of SADF Unit and Reader Unit: FAX Models (Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/Mf4450/Mf4452/Mf4453)
Lists of SADF Unit and Reader Unit: Models Without FAX (MF4430)
(Mf4580Dn/Mf4550D/Mf4570Dn/D520/D550)
List of 2-Sided Printer Unit
Lists of Copyboard Cover and Reader Unit (Mf4420N/Mf4410/Mf4412/D520)
List of 1-Sided Printer Unit (Mf4450/Mf4452/Mf4453/Mf4430/Mf4420N/Mf4410/Mf4412)
List of DADF Unit
Location of Electric Parts
List of 2-Sided Printer Unit (Mf4580Dnmf4570Dn/Mf4550D/Mf4553D/Mf4554D/D550/D520)
List of Reader Unit
List of SADF Unit
List of 1-Sided Printer Unit (Mf4450/Mf4452/Mf4453/Mf4430/Mf4420N/Mf4410 /MF4412)
DADF Unit (Mf4580Dn/D550)
List of Connectors
Mf4430)
SADF Unit
2-Sided Printer Unit
Reader Unit
(Mf4450/Mf4452/Mf4453/Mf4430/Mf4420N/Mf4410/Mf4412)
1-Sided Printer Unit
External Cover, Interior
Front Side
Location of DADF Models (Mf4580Dn/D550)
Front Side
Location of SADF Models (Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/Mf4450/Mf4452/Mf4453/ MF4430)
Rear Side
Rear Side
Front Side
Location of Copyboard Models (Mf4420N/Mf4410/Mf4412/D520)
Rear Side
Duplex Models (Mf4580Dn/Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/D550/D520)
Removing the Left Cover
Mf4410/Mf4412)
Removing the Left Cover
Single-Sided Models
D550/D520)
Duplex Models
Removing the Right Cover
Mf4410/Mf4412)
Removing the Right Cover
Single-Sided Models
Before Removing the Front Cover Unit
Before Removing the Upper Cover
Removing the Front Cover Unit
Removing the Upper Cover
Before Removing the Rear Cover
(Mf4420N/Mf4410/Mf4412/D520)
Before Removing the DADF Unit and Reader Unit
Location of Copyboard Cover and Reader Unit
Removing the DADF Unit and Reader Unit
Before Removing the DADF Unit
Removing the DADF Unit
Before Removing the DADF Pickup Unit
Removing the DADF Pickup Unit
Before Removing the DADF Motor Unit
Removing the DADF Motor Unit
Before Removing the DADF Solenoid Unit
Removing the DADF Solenoid Unit
Removing the DADF Pickup Roller Unit
Removing the DADF Separation Pad
Before Removing the SADF Unit and Reader Unit
Removing the SADF Unit and Reader Unit
Before Removing the SADF Unit
Removing the SADF Unit
Before Removing the SADF Pickup Unit
Removing the SADF Pickup Unit
Before Removing the SADF Motor
Removing the SADF Motor
Removing the SADF Pickup Roller
Removing the SADF Separation Pad
Before Removing the Copyboard Cover and Reader Unit
Removing the Copyboard Cover
Removing the Copyboard Cover and Reader Unit
Before Removing the Copyboard Glass
Models with Copyboard
Removing the Copyboard Glass
Before Removing the Copyboard Glass
Models with Dadf/Models with SADF
Removing the Copyboard Glass
Before Removing the Flatbed Motor Unit
Removing the Flatbed Motor Unit
Before Removing the CIS Unit
Models with Copyboard
Removing the CIS Unit
Before Removing the CIS Unit
Models with Dadf/Models with SADF
Removing the CIS Unit
Controller System
Location of Duplex Models
(Mf4450/Mf4452/Mf4453/Mf4430/Mf4420N/Mf4410/Mf4412)
Location of Single-Sided Models
Mf4450/Mf4452/Mf4453)
Models with FAX
Models Without FAX (Mf4430/Mf4420N/Mf4410/Mf4412/D550/D520)
Removing the Control Panel Unit
Before Removing the Drive Belt
Mf4410/Mf4412)
Removing the Drive Belt
Single-Sided Models
Before Removing the Drive Belt
D550/D520)
Duplex Models
Duplex Models (Mf4580Dn/Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/D550/D520)
Removing the Drive Belt
Before Removing the Main Motor
Mf4410/Mf4412)
Removing the Main Motor
Single-Sided Models
Before Removing the Main Motor
D550/D520)
Duplex Models
Duplex Models (Mf4580Dn/Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/D550/D520)
Removing the Main Motor
Before Removing the Main Fan
D550/D520)
Duplex Models
Duplex Models (Mf4580Dn/Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/D550/D520)
Removing the Main Fan
Before Removing the Engine Controller PCB
Mf4450/Mf4452/Mf4453)
Models with FAX
Removing the Engine Controller PCB
Before Removing the Engine Controller PCB
Models Without FAX (Mf4430/Mf4420N/Mf4410/Mf4412/D550/D520)
Removing the Engine Controller PCB
Before Removing the Main Controller PCB
Before Removing the Main Controller PCB Models with FAX (Mf4580Dn/Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/Mf4450/Mf4452/Mf4453)
Removing the Main Controller PCB Models with FAX (Mf4580Dn/Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/Mf4450/Mf4452/Mf4453)
Models Without FAX or NET (MF4430/MF4410/MF4412/D550/D520)
Removing the Main Controller PCB
Before Removing the FAX-NCU PCB
Before Removing the Main Controller PCB Model Without FAX, with NET (Mf4420N)
Models with FAX (100V)
Removing the FAX-NCU PCB
Removing the Main Controller PCB Model Without FAX, with NET (Mf4420N)
Before Removing the FAX-NCU PCB
Before Removing the Pseudo CI PCB
Models with FAX (100V)
Models with FAX (120V/230V)
Removing the FAX-NCU PCB
Removing the Pseudo CI PCB
Before Removing the Paper Leading Edge Sensor
Removing the Paper Leading Edge Sensor
Before Removing the Fixing Delivery/Paper Width Sensor PCB
Removing the Fixing Delivery/Paper Width Sensor PCB
Before Removing the Toner Sensor and Multi Pickup Sensor Unit
Mf4450/Mf4452/Mf4453)
Models with FAX
Before Removing the Multi Pickup Sensor Unit
Models Without FAX (Mf4430/Mf4420N/Mf4410/Mf4412/D550/D520)
Removing the Multi Pickup Sensor Unit
Before Removing the Speaker
Mf4450/Mf4452/Mf4453)
Models with FAX
Models with FAX (Mf4580Dn/Mf4570Dn/Mf4550D/Mf4553D/Mf4554D/Mf4450/Mf4452/Mf4453)
Removing the Speaker
Before Removing the Laser Scanner Unit
D550/D520)
Duplex Models
Laser Exposure System
Location
Removing the Laser Scanner Unit
Before Removing the Laser Scanner Unit
Mf4410/Mf4412)
Removing the Laser Scanner Unit
Single-Sided Models
Image Formation System
Location
Removing the Transfer Roller
Before Removing the Fixing Assembly
D550/D520)
Duplex Models
Fixing System
Location
Removing the Fixing Assembly
Before Removing the Fixing Assembly
Mf4410/Mf4412)
Removing the Fixing Assembly
Single-Sided Models
(Mf4450/Mf4452/Mf4453/Mf4430/Mf4420N/Mf4410/Mf4412)
Location of Duplex Models
Location of Single-Sided Models
Mf4554D/D550/D520)
Pickup and Feeding System
Before Removing the Pickup Unit
D550/D520)
Duplex Models
Removing the Pickup Unit
Before Removing the Pickup Unit
Mf4410/Mf4412)
Removing the Pickup Unit
Single-Sided Models
Before Removing the Pickup Tray Unit
D550/D520)
Duplex Models
Removing the Pickup Tray Unit
Before Removing the Pickup Tray Unit
Mf4410/Mf4412)
Removing the Pickup Tray Unit
Single-Sided Models
Removing the Pickup Roller
Before Removing the Pickup Solenoid
D550/D520)
Duplex Models
Removing the Pickup Solenoid
Before Removing the Pickup Solenoid
Mf4410/Mf4412)
Removing the Pickup Solenoid
Single-Sided Models
Removing the Separation Pad
Before Removing the Duplex Feed Unit
D550/D520)
Duplex Models
Removing the Duplex Feed Unit
Before Removing the Duplex Reverse Solenoid
D550/D520)
Duplex Models
Removing the Duplex Reverse Solenoid
Adjustment
Mechanical Adjustment
Confirming Nip Width
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Table of Contents
Download this manual
MF4500/MF4400/D500 Series
Service Manual Rev.1
Product Overview
Technical Overview
Periodical Services
Disassembly/Assembly
Adjustment
Trouble Shooting
Error Codes
Service Mode
Appendix
1
2
3
4
5
6
7
8
Table of
Contents
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Table of Contents
Troubleshooting
trouble shooting
224
Trouble Shooting Test Print
225
Trouble Shooting Items
226
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