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Canon MF720 Series User Manual

Canon MF720 Series
327 pages
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Revision 2.0
MF720 Series
Service Manual

Table of Contents

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Canon MF720 Series Specifications

General IconGeneral
FunctionsPrint, Copy, Scan, Fax
Print ResolutionUp to 1200 x 1200 dpi
Copy ResolutionUp to 600 x 600 dpi
Paper Capacity250 sheets
Duplex PrintingYes
TypeLaser
Network ConnectivityEthernet
Operating System CompatibilityWindows, Mac
Printing methodLaser
First Print Out TimeApprox. 8 Seconds
Print languagesUFRII (Ultra Fast Rendering II)
Paper input (Standard)250 sheets
Media typesPlain, Heavy, Transparency, Label, Envelope
Media sizesA4, A5, B5, Legal, Letter, Executive, Envelope
Interface typeUSB 2.0

Summary

MF720 Series Service Manual

Safety Precautions

Product Overview

Specifications

Technical specifications for the host machine, ADF, and wireless LAN.

Control Panel

Detailed explanation of each key and indicator on the control panel.

Technical Explanation

Document Exposure System

Specifications, controls, and major components of the document exposure system.

Document Feeder System

Overview of the Auto Document Feeder's operation and components.

Controller System

Overview of the main and DC controllers and their roles.

Laser Control System

Overview of the laser scanner system and its components.

Image Formation System

Overview of the core image formation process and its components.

Fixing System

Overview of the fixing assembly and its temperature control mechanism.

Image stabilization control

How the product controls image stabilization to avoid faulty images.

Embedded RDS

Overview of the Embedded RDS monitoring program and its capabilities.

E-RDS Setup

Steps for confirming and preparing network settings for E-RDS.

Setting Information Export/Import Function (DCM)

Overview of the DCM function for exporting/importing device configuration settings.

Procedure for Exporting/Importing Service Mode Setting Information

Step-by-step guide for exporting and importing service mode settings via USB.

Procedure for Export/Import Using Remote UI (Service Mode)

Instructions for exporting and importing service mode settings via remote UI.

Procedure for Export/Import Using Remote UI ([System Management Settings] Menu)

Steps to import service mode settings using the Remote UI's System Management menu.

System Management Settings

Settings for system manager information and department ID management.

Network Settings

TCP/IP settings, including IP address, DNS, and proxy configurations.

Disassembly/Assembly

List of Main Unit

Lists main units of the machine with references for removal and adjustment.

PCB

Lists and details various Printed Circuit Boards (PCBs) used in the machine.

External Cover, Internal Cover Disassembly/Assembly Procedure

Procedure for removing the left cover of the machine.

Removing the Left Cover

Step-by-step instructions for removing the left cover of the machine.

Removing the Right Cover

Step-by-step instructions for removing the right cover of the machine.

Removing the Right Front Cover

Instructions for removing the front right cover of the machine.

Removing the Front Cover

Step-by-step guide for removing the front cover of the machine.

Removing the Rear Upper Cover

Instructions for removing the upper rear cover of the machine.

Removing the Rear Cover

Step-by-step guide for removing the rear cover of the machine.

Removing the Rear Lower Cover

Instructions for removing the lower rear cover of the machine.

Removing the Rear Cover Rib Unit

Procedure for removing the rear cover rib unit.

Removing the Upper Cover

Steps to remove the upper cover of the machine.

Removing the Cartridge Tray

Instructions for removing the toner cartridge tray.

Document Exposure, Feed System Disassembly/Assembly Procedure

Procedure for removing the ADF unit and reader unit assembly.

Removing the ADF Unit + Reader Unit

Procedure for removing the ADF unit and reader unit assembly.

Separating the ADF Unit + Reader Unit

Steps to separate the ADF unit from the reader unit.

After Replacing the ADF Units

Post-replacement adjustments for ADF units, including white level calibration.

Removing the CIS Unit

Instructions for removing the CIS unit.

Removing the ADF Pickup Motor

Steps for removing the ADF pickup motor.

Removing the Scoopup sheet holder

Instructions for removing the scoopup sheet holder.

Removing the ADF Roller Unit

Procedure for removing the ADF roller unit.

Removing the ADF Pickup Roller

Steps to remove the ADF pickup roller.

Removing the ADF Separation Roller

Procedure for removing the ADF separation roller.

Removing the ADF Separation Pad

Instructions for removing the ADF separation pad.

Removing the ADF Pickup Feed Unit

Procedure for removing the ADF pickup feed unit.

Removing the Reader Scanner Motor

Steps for removing the reader scanner motor.

Controller System Disassembly/Assembly Procedure

Procedure for removing the controller cover.

Removing the DC Controller PCB

Step-by-step instructions for removing the DC controller PCB.

Removing the High Voltage Power Supply PCB

Procedure for removing the high voltage power supply PCB.

Removing the Low Voltage Unit

Instructions for removing the low voltage unit.

Removing the Fixing Sub PCB

Procedure for removing the fixing sub PCB.

Removing the Driver PCB

Steps for removing the driver PCB.

Removing the Relay PCB

Instructions for removing the relay PCB.

Removing the Control Panel Unit

Procedure for removing the control panel unit.

Removing the Main Drive Unit

Procedure for removing the main drive unit.

Removing the Duplex Reverse Drive Unit

Steps for removing the duplex reverse drive unit.

Removing the Fixing/Fixing Power Supply Cooling Fan Unit

Procedure for removing the fixing and power supply cooling fan unit.

Removing the Duplex Feeding Fan

Instructions for removing the duplex feeding fan.

Pickup Feeder System Disassembly/Assembly Procedure

Procedure for removing the cassette pickup roller.

Adjustment at Parts Replacement

Detailed procedures for performing adjustments after replacing ADF and Reader units.

After Replacing the ADF Units

Detailed procedures for performing adjustments after replacing ADF and Reader units.

After Replacing the Reader Unit

Procedures for adjusting white level and AGC after reader unit replacement.

Troubleshooting

Procedure for printing an engine test chart to check device operation.

Error/Jam/Alarm

Describes error codes shown when a problem occurs.

Outline

Describes error codes shown when a problem occurs.

Jam code

Information on location and position codes for jam detection.

Error Codes

Lists and explains various error codes related to machine components and their remedies.

Jam Code

Details on jam codes, including location and position codes.

Service Mode

General overview of the service mode menu structure.

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