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Canon i-SENSYS MF4340d User Manual

Canon i-SENSYS MF4340d
182 pages
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Aug 22 2008
Service Manual
MF4300 Series

Table of Contents

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Canon i-SENSYS MF4340d Specifications

General IconGeneral
Print TechnologyLaser
Scan Resolution600 x 600 dpi
Scanner TypeFlatbed
Copy Resolution (Black)600 x 600 dpi
Duplex PrintingYes
Monthly Duty Cycle30, 000 pages
Paper Capacity250 sheets
FunctionsPrint, Copy, Scan, Fax
Fax Transmission Speed33.6 kbps
Memory64 MB
Operating System CompatibilityWindows, Mac
InterfaceUSB 2.0

Summary

Chapter 1 Introduction

Product Specifications

Details on parts, specifications, and functions like scanning and recording ranges.

Safety

Guidelines for safe operation and handling of machine components, including laser and toner.

Chapter 2 Basic Operation

Construction

Overview of machine construction and function configuration.

Basic Sequence

Explains the basic operation sequence of the machine from power-on to motor stop.

Chapter 3 Original Exposure System

Basic Construction

Details on specifications, components, and function list for the exposure system.

Parts Replacement Procedure

Step-by-step instructions for replacing scanner unit and reader motor components.

Chapter 4 Original Feeding System

Basic Operation

Explains the basic operation for the Automatic Document Feeder (ADF) and DADF.

Original Detection

Describes sensor types for original presence and end detection within the ADF/DADF.

Detection Jams

Details on jam detection criteria and release procedures for the feeding system.

ADF/DADF

Procedures for removing ADF/DADF pickup rollers, motors, and separation pads.

Chapter 5 Laser Exposure

Overview/Configuration

Explains the laser scanner assembly, its components, and relevant error codes.

Controlling the Laser Activation Timing

Details on laser ON/OFF control and timing mechanisms.

Controlling the Intensity of Laser Light

Explanation of the Auto Photoelectric Current Control (APC) for laser intensity.

Controlling the Laser Scanner Motor

Covers scanner motor speed control and fault detection procedures.

Parts Replacement Procedure

Step-by-step instructions for removing the laser scanner unit.

Chapter 6 Image Formation

Overview/Configuration

Describes the image forming system, its components, and the print process.

Driving and Controlling the High-Voltage System

Details on the generation and application of transfer charging bias.

Toner Cartridge

Explanation of the toner level detection mechanism using a magnetic sensor.

Parts Replacement Procedure

Instructions for removing the transfer charging roller.

Chapter 7 Pickup and Feed System

Overview/Configuration

Explains the pickup/feeding system, its components, sensors, and motors.

Other Control

Details on pickup/feed operation sequences and control mechanisms.

Detection Jams

Classification and detection methods for various jam types in the feeding system.

Duplex Unit

Overview of the duplexing pick-up operation and related components.

Parts Replacement Procedure

Procedures for replacing main motor, separation pad, and pickup roller.

Chapter 8 Fixing System

Overview/Configuration

Details on the fixing method, heater, thermistor, and protection functions.

Various Control Mechanisms

Explains fixing temperature control modes and paper size-based fixing modes.

Protection Function

Describes CPU, safety circuit, and temperature fuse protection mechanisms.

Parts Replacement Procedure

Instructions for removing the fixing assembly and fixing film unit.

Chapter 9 External and Controls

Control Panel

Overview of the machine's control panel, its components, and SCNT PCB control.

Power Supply

Details on the power supply route and protection functions against overcurrent/overvoltage.

Parts Replacement Procedure

Covers replacement of external covers and internal PCBs like SCNT and DCNT.

Chapter 10 Maintenance and Inspection

Periodically Replaced Parts

Information on parts requiring periodic replacement.

Periodical Service

Details on any scheduled periodic service items.

Cleaning

Cleaning methods for external covers, ADF, and reader unit components.

Chapter 11 Measurement and Adjustments

Basic Adjustments

Procedures for adjusting paper margins, reading alignment, and print position.

Chapter 12 Correcting Faulty Images

Outline of Electrical Components

Lists solenoids, motors, sensors, and PCBs used in the machine for troubleshooting.

Chapter 13 Error Code

Error Code

Explains error code types and provides a list of system, scanner, printer, and communication errors.

Chapter 14 Service Mode

Outline

Details on setting service data, activating service mode, and available menu items.

Service Soft Switch Settings (SSSW)

Explanation of soft switch settings, their functions, and bit elaborations.

Test Mode (TEST)

Information on performing faculty tests, sensor tests, and key tests.

Chapter 15 Service Tools

Service Tools

Lists solvents and lubricants recommended for machine maintenance and cleaning.

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