Canon M3010 Series Service Manual

87654321

Service Manual

M3010 Series

Application

This manual has been issued by Canon Inc. for qualied persons to learn technical theory,

installation, maintenance, and repair of products. This manual covers all localities where the

products are sold. For this reason, there may be information in this manual that does not

apply to your locality.

Corrections

This manual may contain technical inaccuracies or typographical errors due to improvements

or changes in products. When changes occur in applicable products or in the contents of this

manual, Canon will release technical information as the need arises. In the event of major

changes in the contents of this manual over a long or short period, Canon will issue a new

edition of this manual.

The following paragraph does not apply to any countries where such provisions are

inconsistent with local law.

Trademarks

The product names and company names used in this manual are the registered trademarks

of the individual companies.

not be copied, reproduced or translated into another language, in whole or in part, without the

consent of Canon Inc.

Caution

Use of this manual should be strictly supervised to avoid disclosure of condential

information.

Explanation of Symbols

The following symbols are used throughout this Service Manual.

Symbols Explanation Symbols Explanation

Check. Remove the claw.

Check visually. Insert the claw.

Check the noise. Use the bundled part.

Disconnect the connector. Push the part.

Connect the connector. Plug the power cable.

Remove the cable/wire from the cable guide or wire saddle.

Turn on the power.

Set the cable/wire to the cable guide or wire saddle.

Remove the screw.

Tighten the screw.

The following rules apply throughout this Service Manual:

1. Each chapter contains sections explaining the purpose of specic functions and the

relationship between electrical and mechanical systems with reference to the timing of

operation.

In the diagrams,

represents the path of mechanical drive; where a signal name

accompanies the symbol, the arrow

indicates the direction of the electric signal.

The expression "turn on the power" means ipping on the power switch, closing the front

door, and closing the delivery unit door, which results in supplying the machine with power.

2. In the digital circuits, '1' is used to indicate that the voltage level of a given signal is "High",

while '0' is used to indicate "Low". (The voltage value, however, differs from circuit to

circuit.) In addition, the asterisk (*) as in "DRMD*" indicates that the DRMD signal goes on

when '0'.

In practically all cases, the internal mechanisms of a microprocessor cannot be checked

in the eld. Therefore, the operations of the microprocessors used in the machines are not

discussed: they are explained in terms of from sensors to the input of the DC controller

PCB and from the output of the DC controller PCB to the loads.

The descriptions in this Service Manual are subject to change without notice for product

improvement or other purposes, and major changes will be communicated in the form of

Service Information bulletins.

All service persons are expected to have a good understanding of the contents of this Service

Manual and all relevant Service Information bulletins and be able to identify and isolate faults

in the machine.

Contents

0 Safety Precautions

CDRH Provisions -------------------------------------------------------------0-2 Laser Safety --------------------------------------------------------------------0-2

About Laser Beams --------------------------------------------------------------- 0-2 Handling Laser Scanner Unit --------------------------------------------------- 0-2

Toner Safety --------------------------------------------------------------------0-3

About Toner ------------------------------------------------------------------------- 0-3 Handling Adhered Toner --------------------------------------------------------- 0-3

Notes on Handling Lithium Battery ---------------------------------------0-3 Notes on Assembly/Disassembly ----------------------------------------- 0-3

1 Product Overview

Product Lineup -----------------------------------------------------------------1-2

Host Machine ----------------------------------------------------------------------- 1-2 Options ------------------------------------------------------------------------------- 1-2

Product Features --------------------------------------------------------------1-2

Product Features ------------------------------------------------------------------- 1-2

Specications ------------------------------------------------------------------1-3

Product Specications ------------------------------------------------------------ 1-3

Parts Name ---------------------------------------------------------------------1-4

External View ----------------------------------------------------------------------- 1-4

Front side of the machine----------------------------------------------------------------- 1-4 Rear side of the machine ----------------------------------------------------------------- 1-4

Cross Section View ---------------------------------------------------------------- 1-5 Control Panel ----------------------------------------------------------------------- 1-5

2 Technical Overview

Basic Conguration -----------------------------------------------------------2-2

Conguration function ------------------------------------------------------------ 2-2 Basic Sequence -------------------------------------------------------------------- 2-2

Basic Sequence of Operation ----------------------------------------------------------- 2-2

Print Sequence ------------------------------------------------------------------------------ 2-3 Power-On Sequence----------------------------------------------------------------------- 2-4

Controller System -------------------------------------------------------------2-5

Main Controller --------------------------------------------------------------------- 2-5

Overview -------------------------------------------------------------------------------------- 2-5

Engine Controller ------------------------------------------------------------------ 2-5

General description ------------------------------------------------------------------------ 2-5

Service Works ---------------------------------------------------------------------- 2-6

At parts replacement ----------------------------------------------------------------------- 2-6 Maintenance --------------------------------------------------------------------------------- 2-6 Notes on service works ------------------------------------------------------------------- 2-6

Original Exposure System -------------------------------------------------- 2-7

Overview ----------------------------------------------------------------------------- 2-7 Major Components ---------------------------------------------------------------- 2-7 Service Works ---------------------------------------------------------------------- 2-8

At parts replacement ----------------------------------------------------------------------- 2-8 Maintenance --------------------------------------------------------------------------------- 2-8 Notes on service works ------------------------------------------------------------------- 2-8

Laser Exposure System -----------------------------------------------------2-9

Overview ----------------------------------------------------------------------------- 2-9

Overview -------------------------------------------------------------------------------------- 2-9

Controlling the Laser Activation Timing -------------------------------------- 2-10

Laser ON/OFF Control -------------------------------------------------------------------2-10 Horizontal Sync Control ------------------------------------------------------------------2-10

Laser Control ----------------------------------------------------------------------- 2-11

Auto Power Control (APC) -------------------------------------------------------------- 2-11

Laser Scanner Motor Control -------------------------------------------------- 2-11

Overview ------------------------------------------------------------------------------------- 2-11 Scanner Motor Fault Detection --------------------------------------------------------- 2-12

Service Works ---------------------------------------------------------------------2-12

At parts replacement ---------------------------------------------------------------------- 2-12 Maintenance --------------------------------------------------------------------------------2-12 Notes on service works ------------------------------------------------------------------2-12

Image Formation System ------------------------------------------------- 2-13

Overview/Conguration ---------------------------------------------------------2-13

Overview -------------------------------------------------------------------------------------2-13 Print Process --------------------------------------------------------------------------------2-13 Static Latent Image Formation Block ------------------------------------------------- 2-14 Development Block------------------------------------------------------------------------2-14 Transfer Block ------------------------------------------------------------------------------ 2-15 Fixing Block ---------------------------------------------------------------------------------2-15 Drum Cleaning Block ---------------------------------------------------------------------2-15

High-Voltage Control ------------------------------------------------------------- 2-16

Overview -------------------------------------------------------------------------------------2-16 Generating Primary Charging Bias ---------------------------------------------------- 2-16 Generating Developing Bias ------------------------------------------------------------ 2-16 Generating Transfer Bias ----------------------------------------------------------------2-16

Toner Cartridge --------------------------------------------------------------------2-17

Toner Level Detection -------------------------------------------------------------------- 2-17 Toner Cartridge Absence/Presence Detection -------------------------------------2-17

Service Works ---------------------------------------------------------------------2-18

At parts replacement ---------------------------------------------------------------------- 2-18 Maintenance --------------------------------------------------------------------------------2-18 Notes on service works ------------------------------------------------------------------2-18

Fixing System ---------------------------------------------------------------- 2-19

Overview/Conguration ---------------------------------------------------------2-19

Overview -------------------------------------------------------------------------------------2-19 Main Parts of Fixing assembly ---------------------------------------------------------2-19

Various Control Mechanisms --------------------------------------------------2-20

Fixing Temperature Control -------------------------------------------------------------2-20 Protective Functions ----------------------------------------------------------------------2-20

Other Functions -------------------------------------------------------------------2-22

Throughput Down Control --------------------------------------------------------------- 2-22

Service Works ---------------------------------------------------------------------2-23

At parts replacement ---------------------------------------------------------------------- 2-23 Maintenance --------------------------------------------------------------------------------2-23 Notes on service works ------------------------------------------------------------------2-23

Pickup Feed System ------------------------------------------------------- 2-24

Overview ----------------------------------------------------------------------------2-24

Overview -------------------------------------------------------------------------------------2-24

Detecting Jams -------------------------------------------------------------------- 2-25

Jam Detection Outline --------------------------------------------------------------------2-25 Delay Jam -----------------------------------------------------------------------------------2-25 Stationary Jam -----------------------------------------------------------------------------2-27 Other Jams ----------------------------------------------------------------------------------2-27

Service Works ---------------------------------------------------------------------2-28

At parts replacement ---------------------------------------------------------------------- 2-28 Maintenance --------------------------------------------------------------------------------2-28 Notes on service works ------------------------------------------------------------------2-28

External And Controls System ------------------------------------------- 2-29

Power Supply ----------------------------------------------------------------------2-29

Power Supply -------------------------------------------------------------------------------2-29 Protective Functions ----------------------------------------------------------------------2-29

Service Works ---------------------------------------------------------------------2-30

At parts replacement ---------------------------------------------------------------------- 2-30 Maintenance --------------------------------------------------------------------------------2-30 Notes on service works ------------------------------------------------------------------2-30

3 Periodical Services

Periodically Replaced Parts ------------------------------------------------ 3-2

Periodically Replaced Parts ----------------------------------------------------- 3-2

Consumables ------------------------------------------------------------------3-2

Consumables ----------------------------------------------------------------------- 3-2

Periodical Service -------------------------------------------------------------3-3

Scheduled Servicing -------------------------------------------------------------- 3-3

Cleaning -------------------------------------------------------------------------3-3

4 Disassembly/Assembly

Outline ---------------------------------------------------------------------------4-2 List Of Parts --------------------------------------------------------------------4-3

External View ----------------------------------------------------------------------- 4-3

Front Side ------------------------------------------------------------------------------------- 4-3 Rear Side ------------------------------------------------------------------------------------- 4-3

List of Main Unit -------------------------------------------------------------------- 4-4

Reader Unit ---------------------------------------------------------------------------------- 4-4 Printer Unit ----------------------------------------------------------------------------------- 4-4

Electrical Components ------------------------------------------------------------ 4-5

Reader Unit ---------------------------------------------------------------------------------- 4-5

Motor ------------------------------------------------------------------------------------------- 4-5 Solenoid --------------------------------------------------------------------------------------- 4-6 Sensor ----------------------------------------------------------------------------------------- 4-6 Switch ------------------------------------------------------------------------------------------ 4-7 Heater/Thermistor/Thermoswitch/ ------------------------------------------------------ 4-7 PCB -------------------------------------------------------------------------------------------- 4-8

List of Connectors -------------------------------------------------------------4-9

Reader Unit -------------------------------------------------------------------------- 4-9 Printer Unit --------------------------------------------------------------------------4-10

External Cover / Interior System ---------------------------------------- 4-12

Layout Drawing -------------------------------------------------------------------- 4-12

Front Side ------------------------------------------------------------------------------------4-12 Rear Side ------------------------------------------------------------------------------------4-12

Removing the Left Cover -------------------------------------------------------4-13 Removing the Right Cover -----------------------------------------------------4-14 Removing the Front Cover Unit -----------------------------------------------4-15

Preparation ----------------------------------------------------------------------------------4-15 Procedure ------------------------------------------------------------------------------------4-15

Removing the Upper Cover ----------------------------------------------------4-15

Preparation ----------------------------------------------------------------------------------4-15 Procedure ------------------------------------------------------------------------------------4-15

Removing the Rear Cover ------------------------------------------------------4-17

Preparation ----------------------------------------------------------------------------------4-17 Procedure ------------------------------------------------------------------------------------4-17

Original Exposure System ------------------------------------------------ 4-19

Layout Drawing -------------------------------------------------------------------- 4-19 Removing the Copyboard Cover. ---------------------------------------------4-19 Removing the Reader Unit -----------------------------------------------------4-20

Preparation ----------------------------------------------------------------------------------4-20 Procedure ------------------------------------------------------------------------------------4-20

Removing the Copyboard Glass Unit ----------------------------------------4-21

Preparation ----------------------------------------------------------------------------------4-21 Procedure ------------------------------------------------------------------------------------4-21

Removing the Reader Motor Unit --------------------------------------------- 4-23

Preparation ----------------------------------------------------------------------------------4-23 Procedure ------------------------------------------------------------------------------------4-23

Removing the CIS Unit ---------------------------------------------------------- 4-26

Preparation ----------------------------------------------------------------------------------4-26 Procedure ------------------------------------------------------------------------------------4-26

Controller System ----------------------------------------------------------- 4-28

Layout Drawing -------------------------------------------------------------------- 4-28 Removing the Control Panel Unit ---------------------------------------------4-29 Removing the Drive Belt --------------------------------------------------------4-29

Preparation ----------------------------------------------------------------------------------4-29 Procedure ------------------------------------------------------------------------------------4-29

Removing the Main Motor ------------------------------------------------------4-31

Preparation ----------------------------------------------------------------------------------4-31 Procedure ------------------------------------------------------------------------------------4-31

Removing the Main Controller PCB ------------------------------------------4-34

Preparation ----------------------------------------------------------------------------------4-34 Procedure ------------------------------------------------------------------------------------4-34 After Replacing the Main Controller PCB -------------------------------------------- 4-34

Removing the Engine Controller PCB --------------------------------------- 4-35

Preparation ----------------------------------------------------------------------------------4-35 Procedure ------------------------------------------------------------------------------------4-35

Removing the Paper Leading Edge Sensor--------------------------------4-38

Preparation ----------------------------------------------------------------------------------4-38 Procedure ------------------------------------------------------------------------------------4-38

Removing the Fixing Delivery/Paper Width Sensor PCB ---------------4-40

Preparation ----------------------------------------------------------------------------------4-40 Procedure ------------------------------------------------------------------------------------4-40

Laser Exposure System --------------------------------------------------- 4-42

Layout Drawing -------------------------------------------------------------------- 4-42 Removing the Laser Scanner Unit --------------------------------------------4-42

Preparation ----------------------------------------------------------------------------------4-42 Procedure ------------------------------------------------------------------------------------4-42

Image Formation System ------------------------------------------------- 4-44

Layout Drawing -------------------------------------------------------------------- 4-44 Removing the Transfer Roller --------------------------------------------------4-44

Fixing System ---------------------------------------------------------------- 4-46

Layout Drawing -------------------------------------------------------------------- 4-46 Removing the Fixing Assembly ------------------------------------------------4-46

Preparation ----------------------------------------------------------------------------------4-46 Procedure ------------------------------------------------------------------------------------4-46

Pickup Feed System ------------------------------------------------------- 4-51

Layout Drawing -------------------------------------------------------------------- 4-51 Removing the Pickup Unit ------------------------------------------------------ 4-51

Preparation ----------------------------------------------------------------------------------4-51 Procedure ------------------------------------------------------------------------------------4-51

Removing the Pickup Roller ----------------------------------------------------4-54 Removing the Pickup Solenoid ------------------------------------------------ 4-55

Preparation ----------------------------------------------------------------------------------4-55 Procedure ------------------------------------------------------------------------------------4-55

Removing the Separation Pad -------------------------------------------------4-57

5 Adjustment

Mechanical Adjustment ------------------------------------------------------5-2

Conrming Nip Width ------------------------------------------------------------- 5-2

6 Trouble Shooting

Test Print ------------------------------------------------------------------------6-2

Test Print Function ----------------------------------------------------------------- 6-2

Trouble Shooting Items ------------------------------------------------------6-3

Image Faults ------------------------------------------------------------------------ 6-3

Smudged/Streaked ------------------------------------------------------------------------- 6-3

Version Upgrade --------------------------------------------------------------6-4

Overview ----------------------------------------------------------------------------- 6-4 Preparation -------------------------------------------------------------------------- 6-4

System Requirements --------------------------------------------------------------------- 6-4 Preparation ----------------------------------------------------------------------------------- 6-5

Downloading System Software ------------------------------------------------- 6-5

7 Error Codes

Overview ------------------------------------------------------------------------7-2 Error Codes ---------------------------------------------------------------------7-3

8 Service Mode

Overview ------------------------------------------------------------------------8-2

Preparation -------------------------------------------------------------------------- 8-2 Service Mode Menu --------------------------------------------------------------- 8-2

Entering Service Mode ----------------------------------------------------------- 8-2 Exiting Service Mode ------------------------------------------------------------- 8-2 Screen Operation in Service Mode -------------------------------------------- 8-3

COPIER -------------------------------------------------------------------------8-4

DISPLAY ----------------------------------------------------------------------------- 8-4 ADJUST ------------------------------------------------------------------------------ 8-5 FUNCTION -------------------------------------------------------------------------- 8-7 COUNTER --------------------------------------------------------------------------- 8-9 TYPE --------------------------------------------------------------------------------- 8-10

TESTMODE ------------------------------------------------------------------ 8-11

SCAN -------------------------------------------------------------------------------- 8-11 COPY --------------------------------------------------------------------------------8-12

Appendix

Service Tools --------------------------------------------------------------------- II Solvent/Oil List -------------------------------------------------------------------III General Circuit Diagram ------------------------------------------------------ IV General Timing Chart ---------------------------------------------------------- V

■CDRH Provisions

■Laser Safety

■Toner Safety

■Notes on Handling Lithium Battery

■Notes on Assembly/ Disassembly

Safety Precautions

M3010 Series

0-2

CDRH Provisions

Food and Drug CDRH (Center for Devices and Radiological Health) under FDA (Food and

Drug Administration) enforced provisions of the section for laser and laser products on August

2, 1976. These provisions are applicable to all laser products manufactured or assembled

after August 1, 1976 and allow only products certied their compliance with the provisions

to market in the US. Each product shall have afxed the applicable label as shown below to

follow the labeling requirements prescribed in CDRH provisions.

Note that the wording included in labels is different depending on laser product

classications.

F-0-1

Laser Safety

About Laser Beams

Laser radiation may be hazardous to human. The laser scanner unit mounted in this device is

sealed in the protective housing and the external cover to prevent laser beams from leaking

to the environment. As long as the device is operated under normal conditions, users are

safely guarded from laser leaks.

Handling Laser Scanner Unit

Before providing service works for the laser scanner unit and its peripherals, ensure to turn

off the power of the device.

Any cover with potential dangers of laser beam reection has afxed the caution label at the

position shown in the gure below.

F-0-2

0-3

Toner Safety

About Toner

Toner is a non-toxic material composed of plastic, iron, small amount of pigment, etc.

Never throw toner in ames to avoid explosion.

Handling Adhered Toner

• Use dry tissue paper to wipe off toner adhered to skin or clothes and wash in water.

• Never use warm water for cleaning up toner to prevent toner particles from being able to

soak into bers permanently.

• Toner particles are reactive with vinyl polymers. Avoid contacting these materials.

Notes on Handling Lithium Battery

Replacing with wrong battery types may cause explosion.

Follow instructions to dispose used batteries properly.

Notes on Assembly/Disassembly

Follow the items below to assemble/disassemble the device.

1. Disconnect the power plug to avoid any potential dangers during assembling/disassembling

works.

2. If not specially instructed, reverse the order of disassembly to reinstall.

3. Ensure to use the right screw type (length, diameter, etc.) at the right position when

assembling.

4. To keep electric conduction, binding screws with washers are used to attach the grounding

wire and the varistor. Ensure to use the right screw type when assembling.

5. Unless it is specially needed, do not operate the device with some parts removed.

6. Never remove the paint-locked screws when disassembling.

Product Overview

■Product Lineup

■Product Features

■Specications

■Parts Name

1-2

Product Overview > Product Features > Product Features

Product Lineup

Host Machine

Model name MF3010

Conguration

3in1 single-sided platen

Design

ADF

Engine

2-sided

1-sided

Yes

LAN Port

FAX

Options

None

T-1-1

Product Features

1. Compact/high-speed printer

This machine is a high-speed B&W printer with a compact body design and the print speed

of 19 ppm (LTR).

2. Reduced standby time and low energy consumption

This machine uses the on-demand xing method in which power is supplied to the heater

only at printing.

This realized the reduction of standby time and low energy consumption during standby.

3. Reduced operation noise and stabilized image quality

This machine uses the belt drive method for the Main Motor's drive transmission.

The operation noise is reduced and image quality is stabilized compared to the

conventional gear drive method (see NOTE).

4. Improved user operability

User operability is improved by concentrating the maintenance processes (jam removal

and cartridge replacement) in a single location at the Upper Cover.

Note: By changing the drive method from gear to belt, uneven cycle of the Photosensitive Drum is reduced. This makes it possible to realize stabilized image quality.

1-3

Product Overview > Specications > Product Specications

Specications

Product Specications

Copyboard Fixed Copyboard Machine installation method Desktop Light source LED (RGB) Image reading method CIS (color) Photosensitive medium OPC Drum Exposure method Laser beam (semiconductor laser) Charging method Roller charging Developing method Toner projection Transfer method Roller transfer Separation method Curvature separation Pickup method Pickup Tray: Pad separation method

Multi-purpose Tray: None Delivery method Face-down Drum cleaning method Blade cleaning Fixing method On-demand method Toner supplying method Toner Cartridge replacement Toner level detection None Document type Sheet Maximum document size 216 mm x 297 mm Magnication ratio 100 % magnication

50 to 200 % (in increments of 10 %) Resolution at reading 600 dpi × 400 dpi / 600 dpi × 600 dpi * Print resolution 600 dpi × 400 dpi / 600 dpi × 600 dpi * Warm-up time 10 sec. or less (when replacing the Toner Cartridge with a new

one: 42 sec. or less) First print time Approx. 7.7 sec. or less (LTR, default setting) First copy time Approx. 12 sec. or less (LTR, default setting) Print speed 19 ppm (LTR, initial setting)

12 ppm (when output adjustment mode is used) Copy speed 19 ppm (LTR) Paper size Fixed size:

A4, B5, A5, LGL, LTR, Statement, Executive, Ofcio, B-ofcio,

M-ofcio, Government-Letter, Government-Legal, Foolscap,

A-foolscap, Envelope COM10, Envelope C5, Envelope B5,

Envelope DL

Custom size:

Width: 76.2 to 216 mm, Length: 127 to 356 mm Paper types Plain paper (60 to 89 g/m

), Heavy paper (90 to 163 g/m2), Rough

paper (60 to 163 g/m2), Transparency, Label, Envelope Pickup Tray capacity Approx. 150 sheets (plain paper: 60 to 80 g/m

)

Delivery Tray capacity Approx. 100 sheets (plain paper: 60 to 80 g/m

)

Environment temperature range 10 to 30 degrees Centigrade Environment humidity range 20 to 80 % Duplex method None Host Interface Standard: USB/Hi-speed USB, Options: None Hard disk capacity Standard: None, Options: None Memory capacity Standard: 64 MB, Options: None Power supply AC120 to 127V +/- 10 %, ( 50,60 Hz +/- 2 Hz)

AC220 to 240V +/- 10 %, ( 50,60 Hz +/- 2 Hz)

Maximum power consumption 900 W or less (120 V), 960 W or less (230 V) Power consumption 460 W or less (120 V), 450 W or less (230 V) External dimensions (W x D xH) 372 × 276 × 254 mm Weight Approx. 8.2 kg (including Toner Cartridge)

*: Resolution switching

With this machine, 2 types of resolution can be switched by setting "Copy Type" on the

printer driver.

Speed priority (at the time of shipment): 600 dpi × 400 dpi

Resolution priority: 600 dpi × 600 dpi

T-1-2

1-4

Product Overview > Parts Name > External View > Rear side of the machine

Parts Name

External View

■Front side of the machine

[3]

[11]

[10]

[6]

[7]

[5]

[9]

[8]

[1]

[2]

[4]

[13]

[12]

No. Name No. Name

[1] Control Panel Unit [8] Power Switch [2] Upper Cover [9] Front Cover Unit [3] Right Cover [10] Delivery Auxiliary Tray [4] Pickup Tray Paper Guides [11] Delivery Tray [5] Pickup Tray [12] Toner Cartridge Guide [6] Pickup Tray Trailing Edge Paper Guides [13] Transfer Roller [7] Small Size Paper Guides

F-1-1

■Rear side of the machine

[1]

[2]

[3]

[4]

[5]

[8]

[7]

[6]

No. Name No. Name

[1] Copyboard Cover [5] Left Cover [2] Copyboard Glass [6] USB Device Port [3] Copyboard Upper Cover [7] Power Supply Cord Slot [4] Copyboard Lower Cover [8] Rear Cover

F-1-2

1-5

Product Overview > Parts Name > Control Panel

Cross Section View

[10]

[1]

[11]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[12]

No. Name No. Name

[1] Copyboard Glass [7] Photosensitive Drum [2] CIS Unit [8] Fixing Film Unit [3] Separation Pad [9] Fixing Pressure Roller [4] Pickup Roller [10] Fixing Assembly [5] Feed Roller [11] Delivery Roller [6] Transfer Roller [12] Laser Scanner Unit

F-1-3

Control Panel

[1]

[2] [3]

[5]

[6][7][8]

[4]

No. Name Function

[1] Menu setting lamp (green) Blinking: Menu is being set.

Menu setting key Menu setting mode is entered.

Pressing this key while menu is being set returns to one layer above.

[2] Density setting amp (green) Blinking: Density is being set.

Lit: When changing from the initial value Page aggregation setting lamp (green)

Blinking: Reduced layout/ID Card copy is being set.

Lit: When changing from the initial value Enlargement/reduction setting lamp (green)

Blinking: Enlargement/reduction is being set.

Lit: When changing from the initial value Copy setting key Copy setting items are switched by each press of this key.

[3] - (◄) key The menu items are switched or the setting values are

increased/decreased in the menu setting mode. Also, the

setting values of copy setting items are increased/decreased.

+ (►) key

[4] Stop/reset key The job is stopped.

Pressing this key while menu is being set returns to one layer

above.

[5] Start/OK key Copy operation is started.

In the menu setting mode, the menu items are selected or the

setting values are determined.

[6] Jam occurrence lamp (orange) Blinking: At occurrence of a jam

Lit: At occurrence of a service error

[7] Out of paper lamp (orange) Blinking: When paper on the Pickup Tray runs out

Lit: At occurrence of a service error

[8] Indicator (green) The setting values of copy setting items or the status of this

product are displayed.

F-1-4

T-1-3

Technical Overview

■Basic Conguration

■Controller System

■Original Exposure System

■Laser Exposure System

■Image Formation System

■Fixing System

■Pickup Feed System

■External And Controls System

2-2

Technical Overview > Basic Conguration > Basic Sequence > Basic Sequence of Operation

Basic Conguration

Conguration function

The machine may be broadly divided into the following 7 functional blocks: engine control

system,original exposure system, laser exposure system, image formation system, pickup

feed system, xing system, and external and control system.

Original exposure system

External device

Engine control

system

Laser exposure system

Pickup feed system

Image formation system

Fixing system

External and controls system

F-2-1

Basic Sequence

■Basic Sequence of Operation

The engine controller controls the operation sequence. The following table provides an outline

of machine operation occurring from when the power switch is turned on to when printing

ends and Main Motor (M1) stop, indicating the purposes of intervals and engine operation.

Interval Purpose Remarks WAIT (Wait)

From power-ON until initial drive for Main Motor (M1) is completed.

To clear potential from the drum surface and to clean the transfer roller. Also to bring the heater temperature up to the targeted temperature.

Detect whether the Toner cartridge is installed or not.

STBY (Standby)

From the end of the WAIT period or the LSTR period until the print command is sent from the main controller. Or, from the end of the LSTR period until power switch is turned OFF.

To keep the printer ready to print.

INTR (initial rotation)

From the input of the print command from the main controller until the Pickup Solenoid (SL1) is turned ON.

To stabilize the photosensitive drum sensitivity in preparation for printing. Also to clean the transfer roller.

PRINT (print)

From the end of the INTR period until the Paper Leading Edge Sensor (PS751) detects the trailing edge of paper.

To form image on the photosensitive drum based on the VIDEO (/VDO, VDO) signals input from the main controller, and to transfer the toner image onto paper.

LSTR (last rotation)

From the end of PRINT period until the Main Motor (M1) stops.

To deliver the last paper completely out of the printer.

Return to the INTR period as soon as another print command is sent from the main controller.

T-2-1

2-3

Technical Overview > Basic Conguration > Basic Sequence > Print Sequence

■Print Sequence

Fixing heater

CIS Unit

Reader Motor (M3)

Sequence

WAIT

Power-on

Start KEY

0.9

0.1

0.3

0.1

Max.1.5

2.4

0.5

0.06

0.9

2.0

Forcible emission

Masking emission Masking emission Masking emission

1.3Print temperature control

Print command

Waiting for a print command

0.5

1.1

0.1

0.8

Max.4.1

1.1

Cleaning bias Cleaning bias Print bias Cleaning bias

BD emission/ Forcible emission

Controls at 80 C

Relay

Print command

Scanner motor (M2)

Laser diode

Main motor (M1)

Pickup solenoid (SL1)

Leading edge sensor (PS751)

Fixing delivery sensor (PS701)

Primary charging bias (DC)

Developing bias (AC)

Developing bias (DC)

Transfer bias

STBY INTR PRINT LSTR STBY

(Unit:Seconds)

F-2-2

2-4

Technical Overview > Basic Conguration > Basic Sequence > Power-On Sequence

■Power-On Sequence

The sequences from the power-ON to the STBY period are described below.

1) Power-ON.

2) CPU initialization.

3) Video interface communication start.

4) Residual paper check.

Detecting paper presence by each sensor signaling.

5) Initial drive for Main Motor (M1).

6) Initial drive for Fixing Heater (H1).

Controlling xing temperature targeting for 120 deg C.

7) Initial drive of the Scanner Motor (M2).

8) High-voltage control.

Detect cartridge presence after primary charging AC bias is applied.

Cleaning transfer roller.

9) Failure/Abnormality check.

Detecting xing unit failure and door open during above periods.

2-5

Technical Overview > Controller System > Engine Controller > General description

Controller System

Main Controller

■Overview

The Main Controller receives print information from the Reader and external equipment

(computer, etc.). Video data is created from the received print information, and is sent to the

Engine Controller.

There are 2 types of print information from the external equipment: engine command data to

exchange the status or unique information of a printer and dot data for printing.

In the case of receiving dot data, video data is created and is sent to the Engine Controller.

In the case of receiving engine command data, printer status is returned to the external

equipment after communicating with the Engine Controller.

EXTERNAL DEVICE

USB

INTERFACE

CONTROL PANEL

ENGINE

CONTROLLER

DRAM

MAIN CONTROLLER

EEPROM

READER

CONVERTER

ANALOG TO DIGITAL

MOTOR DRIVER

DC/DC CONVERTER

CPU

ASIC

F-2-3

Engine Controller

■General description

Engine controller is the circuit to control the operation sequence of the host machine and it is

controlled by the CPU inside the engine controller.

When the Power Switch (SW1100) is turned ON and DC power is supplied through the low

voltage power inside engine controller, CPU starts the printer operation control.

Then, CPU drives the loads such as laser diode, motors and solenoids etc. according to the

image data that is input by the main controller when status becomes stand-by mode.

The following is the block diagram of this circuit.

AC input

Fixing assembly

Motor

Transfer roller

High-voltage

power supply

Low-voltage power supply

Laser scanner

unit

Solenoid

Main controller

Toner Cartridge

Sensor

CPU

Switch

Engine controller

Fixing control

F-2-4

2-6

Technical Overview > Controller System > Service Works > Notes on service works

Service Works

■At parts replacement

No work is required for this product at parts replacement.

■Maintenance

No periodically replaced parts, durable parts or periodical service is set for this product.

■Notes on service works

None.

2-7

Technical Overview > Original Exposure System > Major Components

Original Exposure System

Overview

item function / method

document exposure

LED

document scan

Scan by the shift of the CIS Unit

scanning resolution

600 dpi x 400 dpi, 600 dpi x 600 dpi (Horizontal x Vertical)

number of gradations

256 gradations

magnication

50 % to 200 % (10 % increment) Horizontal: image processing by Main Controller PCB Vertical: change of carriage shift speed, image processing by Main Controller PCB

lens

CIS / Color

CIS Unit

number of lines: 1 line number of pixels: 5148 pixels as total pixels (5104 pixels as effective pixels) maximum document scanning width: 216 mm

CIS Unit drive control

drive control by Reader motor (M3)

document size detection

none

T-2-2

Major Components

Followings are the major components for Document Exposure System.

• The CIS Unit to scan document

• The Reader motor, the drive pulley, the drive belt, to shift the CIS Unit

In image scanning control, the CIS Unit is shifted by rotating the Reader motor based on the

drive signal from the Engine Controller PCB and scan the original on the copyboard glass.

Drive Belt

Drive Pulley

CIS Unit

Reader Motor(M3)

F-2-5

2-8

Technical Overview > Original Exposure System > Service Works > Notes on service works

Service Works

■At parts replacement

No work is required for this product at parts replacement.

■Maintenance

No periodically replaced parts, durable parts or periodical service is set for this product.

■Notes on service works

None.

2-9

Technical Overview > Laser Exposure System > Overview > Overview

Laser Exposure System

Overview

■Overview

The laser exposure system forms static latent images on the photosensitive drum according

to the VIDEO signals sent from the main controller, and is comprised of the laser driver and

scanner motor, etc. These are controlled by the engine controller. The following is the outline.

Laser unit

Scanner Motor (M2)

Four-faced mirror

Cylindrical lens

Photosensitive drum

Engine Controller

BD INPUT signal

VIDEO signal

LASER CONTROL signal

SCANNER MOTOR

SPEED CONTROL signal

Main controller

Focus lens

BD sensor

Collimator

lens

F-2-6

The operational sequence of the laser scanner unit is described below.

1) When the Main controller sends print instruction command, the Engine controller rotates

the Four-faced mirror, causing the Scanner Motor (M2) to rotate.

2) When the Scanner Motor (M2) starts to rotate, the Engine controller emits the laser forcibly

using the Laser control signal, causing the Engine controller to start rotation control for the

Scanner Motor (M2).

3) The Engine controller controls to keep a constant speed of rotation of the Scanner Motor

(M2) using the Scanner motor speed control signal.

4) After the rotation speed of the Scanner motor reaches its target, the Main controller sends

VIDEO signals to the Laser driver PCB.

5) The Laser driver emits laser diode according to these signals.

6) The laser beam passes through the collimator lens and the cylindrical lens and enters the

Four-faced mirror rotating at a constant speed.

7) The laser beam reected by the Four-faced mirror is focused on the Photosensitive drum

via the image-forming lens at the front of the Four-faced mirror.

8) When the Four-faced mirror rotates at a constant speed, the laser beam on the

Photosensitive drum is scanned on the Photosensitive drum at a constant speed.

9) When the Photosensitive drum rotates at a constant speed and the laser beam is scanned

on the Photosensitive drum at a constant speed, latent images are formed on the

Photosensitive drum.

2-10

Technical Overview > Laser Exposure System > Controlling the Laser Activation Timing > Horizontal Sync Control

Controlling the Laser Activation Timing

■Laser ON/OFF Control

In this control, the laser driver turns on/off the laser diode (LD) according to the laser control

signal sent from the engine controller.

The following is the circuit diagram of the laser control.

Engine

Controller

Main

Controller

Laser driver PCB

Laser driver IC

BD Sensor

LDPD

CNT1

CNT0

VOD

/VOD

Sample hold

circuit

Drive

circuit

Comparator

Logic PCB

/BD

+3.3V

/BDI

F-2-7

The engine controller sends the laser control signals (CNT0, CNT1) for changing the

operation mode of the laser to the logic circuit in the laser driver IC, as well as the video

signals (VDO, /VDO) for image formation.

The laser driver IC executes laser control according to the combination of the CNT0, CNT1

signals.

The following is the combination of the laser control signal (CNT0, CNT1).

Operation mode CNT0 CNT1 Remarks

Discharge L L The capacitor (C1) is discharged. Data output H H At normal print APC H L At using APC Forced OFF L H At using image mask

■Horizontal Sync Control

This is the control to adjust the writing position in the image horizontal direction.

The following is the details of control procedure.

1) The engine controller controls the laser control signal during unblanking (*) to emit the laser

diode (LD) forcibly.

2) The BD PCB exists on the scanning route of the laser beam, which is sent to the BD PCB.

3) The BD PCB detects this laser beam, creates BD input signal (/BDI) and sends it to the

engine controller.

4) The engine controller creates horizontal sync signals (/BD) based on /BDI signal and sends

the /BD signal to the main controller.

5) When /BD signal is input, the main controller outputs the video signal (VDO, /VDO) to the

engine controller to adjust the writing position in image horizontal direction.

*: Unblanking period

The period during which the laser diode is emitted in non-image area.

T-2-3

2-11

Technical Overview > Laser Exposure System > Laser Scanner Motor Control > Overview

Laser Control

■Auto Power Control (APC)

This is the control to emit a constant level of laser diode.

There are two types of APC; initial APC (note 1), and line space APC (note 2). The laser

driver executes the same procedure for both controls. The following is the details of the

control procedure.

1) When the laser control signal enters APC mode (CNT0=H, CNT1=L), the laser driver emits

LD in APC mode.

2) The emission level of LD is detected with photo diode (PD), converted from current output

to voltage, and compared with the standard voltage (voltage equivalent to the target laser

level).

3) The laser driver controls the laser current to achieve the voltage of LD target level.

4) When the laser control signal enters LD forced OFF mode, the LD is forcibly turned off. The

laser driver saves the adjusted laser intensity to the capacitor (C1).

NOTE:

1. Initial APC

APC that is executed during initial rotation. APC adjusts laser intensity and detects faults in the laser.

2. Line space APC

APC that is executed during printing. Laser intensity for one line is adjusted before writing one line.

Laser Scanner Motor Control

■Overview

This is the control to rotate the Scanner Motor (M2) at a constant speed to emit the laser

beam on the correct position on the photosensitive drum.

The following is the control circuit of the Scanner Motor (M2).

Engine controller

Motor driver PCB

BD PCB

Oscillator

Reference

clock

Frequency

comparator

Laser scanner unit

Integration

circuit

Scanner motor

driver IC

Scanner motor

ACC

DEC

/BDI

Drive

circuit

CPU ASIC

X501

+24VA

The engine controller creates standard clock based on oscillation frequency of the oscillator

(X501); the cycles of the standard clock is compared with that of BD input signal (/BDI) with a

frequency comparator and the rotations of the Scanner Motor (M2) is monitored.

The engine controller sends the scanner motor acceleration signal (ACC) and scanner motor

deceleration signal (DEC) to the scanner motor driver according to the detected rotation

speed to control the rotation speed.

F-2-8

2-12

Technical Overview > Laser Exposure System > Service Works > Notes on service works

■Scanner Motor Fault Detection

This is the detection of faults in the laser scanner unit.

When the laser scanner unit falls into either of the following status, the engine controller

judges it as a fault in the laser scanner unit system and notices the status of fault to the main

controller.

The operations of the host machine are stopped.

1. Fault in BD input

At startup of the scanner, /BDI signal cannot be detected within 0.1 sec from the completion

of forced acceleration of the Scanner Motor (M2).

2. Fault in startup

During activating the Scanner Motor (M2) at startup of the scanner, the motor rotation

exceeds the specied range (98.3 to 102.1%).

3. Fault in control

After startup of the scanner completes correctly, /BDI signal exceeds the specied value of

cycle 10 consecutive times.

Service Works

■At parts replacement

No work is required for this product at parts replacement.

■Maintenance

No periodically replaced parts, durable parts or periodical service is set for this product.

■Notes on service works

None.

2-13

Technical Overview > Image Formation System > Overview/Conguration > Print Process

Image Formation System

Overview/Conguration

■Overview

The image formation system is the core of this equipment; it forms toner images on papers.

The image formation system is comprised of the following components.

The engine controller controls the laser scanner unit and high-voltage power supply circuit

and forms images based on the video signals on papers.

The following are the details of print process for this equipment and the functions of image

formation.

Fixing assembly

Cartridge

Photosensitive drum

To primary charging roller

To developing cylinder

Engine controller

PRI

DEV

High-voltage power supply

VIDEO signal

Main controller

CPU

Laser/scanner unit

Laser beam

Fixing Film

Pressure roller

Transfer roller

F-2-9

■Print Process

This explains the basic process of the operations that a printer executes for image formation.

The print process of this equipment is divided largely into 5 blocks, 7 steps.

Toner images are formed on papers by executing the steps of each block in order.

The following are the blocks of print process and the steps.

1. Static latent image formation block

Step 1: Primary charging

Step 2: Laser beam exposure

2. Development block

Step 3: Development

3. Transfer block

Step 4: Transfer

Step 5: Separation

4. Fixing block

Step 6: Fixing

5. Drum cleaning block

Step 7: Drum cleaning

Paper path Rotational direction of

the drum

Electrostatic latent image formation block

Transfer block

Fixing block

Development block

Drum cleaning block

Delivery

Pick-up

4. Transfer5. Separation

6. Fixing

2. Laser beam exposure

3. Development

7. Drum cleaning

1. Primary charging

F-2-10

2-14

Technical Overview > Image Formation System > Overview/Conguration > Development Block

■Static Latent Image Formation Block

This block is comprised of two steps and forms static latent images on the photosensitive

drum.

When the nal step of this block completes, negative charge remains at dark areas on the

drum surface where laser beam has not been exposed, and negative charge is eliminated

from bright areas on the drum surface with laser beam exposed. The images on the drum

with negative charge are called static latent images because human eyes cannot detect them.

Time (t)

Surface

potential

(V)

Laser beam

exposure

(step 2)

Transfer

(step 4)

Primary

charging

(step 1)

Primary

charging

(step 1)

Exposed area

Unexposed area

Step 1: Primary charging

For preparation of latent image formation, the surface of photosensitive drum is charged

with even negative potential. In this primary charging, the charge is applied from the primary

charging roller directly to the photosensitive drum.

DC bias is applied to the primary charging roller to maintain an even potential on the surface

of the photosensitive drum.

Primary charging roller

Photosensitive drum

DC bias

F-2-11

F-2-12

Step 2: Laser beam exposure

In this step, static latent images are formed on the photosensitive drum with laser beam.

When laser beams are scanned on the photosensitive drum negatively charged, bright areas

lose their charges, eliminating negative potential on the surface of the photosensitive drum;

on those portions, static latent images are formed.

Laser beam

Exposed

area

Unexposed

area

■Development Block

This block is comprised of one step; it puts toners to the static latent images on the surface of

the photosensitive drum and visualizes the images using toner projection development. The

toner projection development makes the toner jump on the surface of the photosensitive drum

and develops the images.

The toner (developer) used for this equipment is a one-component toner that comprises

magnetic body and resin, etc.

Step 3: Development

Toner is afxed to static latent images on the surface of the photosensitive drum.

The toner is charged negatively by friction between the developing cylinder and the surface of

the developing blade.

An area on the photosensitive drum exposed with laser beam has higher potential than the

developing cylinder; the potential difference between the drum surface and the cylinder

enables the toner to jump on the drum surface and makes them visible images.

AC bias superimposed with the development DC negative bias is applied to the developing

cylinder.

Blade

Developing cylinder

AC bias

DC bias

Photosensitive drum

Unexposed area

Exposed area

Unexposed area

F-2-13

F-2-14

2-15

Technical Overview > Image Formation System > Overview/Conguration > Drum Cleaning Block

■Transfer Block

This block is comprised of two steps; it transfers toner images on the surface of the

photosensitive drum to papers.

Step 4: Transfer

In this step, toner images on the photosensitive drum are transferred to papers.

This equipment applies DC positive bias to the transfer roller facing the photosensitive drum

and charges papers positively. This enables toner negatively charged on the surface of the

photosensitive drum to be transferred to papers.

DC bias

Transfer roller

Photosensitive

drum

Media

Step 5: Separation

In this step, DC negative bias is applied to the static eliminator according to the elasticity of

papers to separate the papers from the photosensitive drum. The static eliminator is used to

stabilize the paper feed system (prevention of toner stray that appears as polka-dots on print

images in a low-temperature, low-humidity environment), and neutralizes the electric charge

at the back of papers.

Media

Transfer roller

Static charge eliminator

Photosensitive

drum

F-2-15

F-2-16

■Fixing Block

This block applies pressure and heat to papers and the toner on them to x toner images to

the papers.

Step 6: Fixing

This step employs on-demand xing that xes toner images transferred to papers on the

papers.

Fixing heater

Fixing film

Toner

Media

Pressure roller

■Drum Cleaning Block

The drum cleaning block removes the toner remained on the photosensitive drum.

Step 7: Drum cleaning

In this step, toner remained on the photosensitive drum is removed.

The cleaning blade scrapes the leftover toner on the surface of the photosensitive drum; the

toner is collected into the cleaner container.

By implementing the above step, the surface of the photosensitive drum is cleaned.

Cleaning blade

Cleaner container

Photosensitive

drum

F-2-17

F-2-18

+ 103 hidden pages

Canon M3010 Series Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual