Canon L295 User Manual

Service Manual

FAX-L200 Series FAX-L295

Oct 7 2003

Application

This manual has been issued by Canon Inc. for qualified 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.

reproduced or translated into another language, in whole or in part, without the written consent of Canon Inc.

Printed in Japan

Caution

Use of this manual should be strictly supervised to avoid disclosure of confidential information.

Symbols Used

This documentation uses the following symbols to indicate special information:

Symbol Description

Indicates an item of a non-specific nature, possibly classified as Note, Caution, or Warning.

Indicates an item requiring care to avoid electric shocks.

Indicates an item requiring care to avoid combustion (fire).

Indicates an item prohibiting disassembly to avoid electric shocks or problems.

Introduction

Memo

REF.

Indicates an item requiring disconnection of the power plug from the electric outlet.

Indicates an item intended to provide notes assisting the understanding of the topic in question.

Indicates an item of reference assisting the understanding of the topic in question.

Provides a description of a service mode.

Provides a description of the nature of an error indication.

Introduction

The following rules apply throughout this Service Manual:

1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical

and mechanical systems with reference to the timing of operation.

ޓIn the diagrams, represents the path of mechanical drive; where a signal name accompanies the symbol ,

the arrow indicates the direction of the electric signal.

ޓThe expression "turn on the power" means flipping 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 field. 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."

%QPVGPVU

Chapter 1ޓPRODUCT DESCRIPTION

1.1 Product Specifications....................................................................................................................................... 1- 1

1.1.1Product Specifications................................................................................................................................. 1- 1

1.2 Detailed Specifications...................................................................................................................................... 1- 5

1.2.1Time required for transmission protocol ..................................................................................................... 1- 5

1.2.2Scanning Range........................................................................................................................................... 1- 5

1.2.3Printing Range............................................................................................................................................. 1- 6

1.3 Names of Parts................................................................................................................................................... 1- 8

1.3.1External View.............................................................................................................................................. 1- 8

1.3.2Operation Panel ......................................................................................................................................... 1- 10

1.4 Safety............................................................................................................................................................... 1- 11

1.4.1Safety of Laser Light................................................................................................................................. 1- 11

1.4.2Handling the Laser Unit ............................................................................................................................ 1- 11

1.4.3Safety of Toner.......................................................................................................................................... 1- 11

Chapter 2ޓTECHNICAL REFERENCE

2.1 Document Feed and Exposure System.............................................................................................................. 2- 1

2.1.1 Overview/Configuration ............................................................................................................................. 2- 1

2.2 Laser Exposure .................................................................................................................................................. 2- 3

2.2.1 Overview/Configuration ............................................................................................................................. 2- 3

2.3 Image Formation ............................................................................................................................................... 2- 5

2.3.1 Overview/Configuration ............................................................................................................................. 2- 5

2.4 Pickup and Feed System.................................................................................................................................... 2- 7

2.4.1 Overview/Configuration ............................................................................................................................. 2- 7

2.4.2 Detection Jams ............................................................................................................................................ 2- 9

2.5 Fixing Unit ...................................................................................................................................................... 2- 12

2.5.1 Overview/Configuration ........................................................................................................................... 2- 12

2.5.2 Protective Function ................................................................................................................................... 2- 12

Chapter 3ޓDISASSEMBLY AND ASSEMBLY

3.1 EXTERNAL AND CONTROLS SYSTEM ..................................................................................................... 3- 1

3.1.1 External Cover ............................................................................................................................................ 3- 1

3.1.2 Power Supply Board ................................................................................................................................... 3- 1

3.1.3 Toner Sensor ............................................................................................................................................... 3- 2

3.1.4 Operation Panel Unit................................................................................................................................... 3- 4

3.1.5 SCNT Board................................................................................................................................................ 3- 5

3.1.6 PCNT Board................................................................................................................................................ 3- 6

3.1.7 Modular Board ............................................................................................................................................ 3- 8

3.2 IMAGE FORMATION SYSTEM .................................................................................................................. 3- 10

3.2.1 Transfer Charging Roller .......................................................................................................................... 3- 10

3.3 LASER EXPOSURE SYSTEM...................................................................................................................... 3- 11

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3.3.1 Laser/Scanner Unit....................................................................................................................................3- 11

3.4 PICKUP AND FEEDING SYSTEM...............................................................................................................3- 12

3.4.1 Main Motor ...............................................................................................................................................3- 12

3.4.2 Separation Pad...........................................................................................................................................3- 13

3.4.3 Pickup Roller.............................................................................................................................................3- 15

3.5 FIXING SYSTEM ...........................................................................................................................................3- 17

3.5.1 Fixing Pressure Roller...............................................................................................................................3- 17

3.5.2 Fixing Film Unit........................................................................................................................................3- 19

3.6 DOCUMENT FEED/EXPOSURE SYSTEM .................................................................................................3- 21

3.6.1 Separation Guide Unit...............................................................................................................................3- 21

3.6.2 Contact Sensor...........................................................................................................................................3- 22

3.6.3 Separation Roller.......................................................................................................................................3- 24

3.6.4 Document Feed Motor ..............................................................................................................................3- 25

Chapter 4ޓMAINTENANCE AND INSPECTION

4.1 Periodically Replaced Parts ...............................................................................................................................4- 1

4.1.1Parts Requiring Periodical Replacement .....................................................................................................4- 1

4.2 Consumables......................................................................................................................................................4- 2

4.2.1Consumable .................................................................................................................................................4- 2

4.3 Periodical Service ..............................................................................................................................................4- 3

4.3.1Items Requiring Scheduled Servicing .........................................................................................................4- 3

4.4 Cleaning.............................................................................................................................................................4- 4

4.4.1Items Requiring Cleaning............................................................................................................................4- 4

4.4.2Cleaning Method (external covers) .............................................................................................................4- 5

4.4.3Cleaning Method (Reading unit) .................................................................................................................4- 5

4.4.4Cleaning Method (Printer unit)....................................................................................................................4- 6

4.5 Lubrications .......................................................................................................................................................4- 8

4.5.1Areas Requiring Application of Grease.......................................................................................................4- 8

Chapter 5ޓTROUBLESHOOTING

5.1 Phenomenon Table ............................................................................................................................................5- 1

5.1.1Symptoms ....................................................................................................................................................5- 1

5.2 Countermeasure .................................................................................................................................................5- 3

5.2.1 Image Faults ................................................................................................................................................5- 3

5.2.2 Faulty Feeding...........................................................................................................................................5- 12

5.2.3 Malfunction ...............................................................................................................................................5- 13

5.2.4 Jam (Main Unit) ........................................................................................................................................5- 15

5.3 Measurement and Adjustment .........................................................................................................................5- 16

5.3.1 Basic Adjustments.....................................................................................................................................5- 16

5.3.2 Nip Width..................................................................................................................................................5- 16

5.4 Service Tools ...................................................................................................................................................5- 17

5.4.1Special tools...............................................................................................................................................5- 17

5.5 Error Code .......................................................................................................................................................5- 18

5.5.1 Outline.......................................................................................................................................................5- 18

5.5.2 User Error Code ........................................................................................................................................5- 18

5.5.3 Service Error Code ....................................................................................................................................5- 22

5.6 Service Mode ...................................................................................................................................................5- 24

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5.6.1 Outline....................................................................................................................................................... 5- 24

5.6.2 Default Settings......................................................................................................................................... 5- 31

5.6.3 Service Soft Switch Settings (SSSW)....................................................................................................... 5- 46

5.6.4 Numeric Parameter Settings (NUMERIC Param.) ................................................................................... 5- 48

5.6.5 Test Mode (TEST) .................................................................................................................................... 5- 49

Chapter 6ޓAPPENDIX

6.1 Outline of Electrical Components ..................................................................................................................... 6- 1

6.1.1 Sensor.......................................................................................................................................................... 6- 1

6.1.2 PCBs ........................................................................................................................................................... 6- 2

Chapter 1ޓPRODUCT

DESCRIPTION

Contents

%QPVGPVU

1.1 Product Specifications........................................................................................................................................ 1-1

1.1.1 Product Specifications................................................................................................................................. 1-1

1.2 Detailed Specifications....................................................................................................................................... 1-5

1.2.1 Time required for transmission protocol ..................................................................................................... 1-5

1.2.2 Scanning Range........................................................................................................................................... 1-5

1.2.3 Printing Range............................................................................................................................................. 1-6

1.3 Names of Parts.................................................................................................................................................... 1-8

1.3.1 External View.............................................................................................................................................. 1-8

1.3.2 Operation Panel ......................................................................................................................................... 1-10

1.4 Safety................................................................................................................................................................ 1-11

1.4.1 Safety of Laser Light................................................................................................................................. 1-11

1.4.2 Handling the Laser Unit ............................................................................................................................ 1-11

1.4.3 Safety of Toner.......................................................................................................................................... 1-11

1.1 Product Specifications

Chapter 1

1.1.1 Product Specifications

Body installation

method

Exposure Method Semi-conductor laser

Development Method Toner projection

Transfer Method Roller transfer

Fixing method On-demand fixing

Delivery method face-down/face-up

Toner level detection

function

Toner supply type Replace the Toner Cartridge (FX3)

Document type Sheets

Maximum document

size

0003-1944

Desktop

Yes (Toner out detect)

Multiple pages: 216 x 355.6 mm / 1 pages: 216 x 1000

Minimum document

size

Document thickness Multiple pages: 0.06 to 0.13 mm (40 to 90 g/m2) / 1

ADF capacity Max. 30 sheets (A4/Letter) / Max. 10 sheets (Legal)

Effective scanning

width

Scanning method Contact sensor scanning method

Reading resolution Facsimile: Standard: 8 dots/mm (203.2 dpi) x 3.85

Copying resolution Scanning: 400 x 400 dpi (Direct copy) / 200 x 300 dpi

Printing resolution 600 x 600 dpi

Print speed (A4) Approx. 6 pages/minute

Multi-purpose tray

paper size

148 x 105 mm

pages: 0.06 to 0.23 mm (35 to 240 g/m2)

208 mm (A4) / 214 mm (Letter/Legal)

line/mm (97.79 dpi) / Fine: 8 dots/mm (203.2 dpi) x

7.7 line/mm (195.58 dpi) / Super Fine: 8 dots/mm

(203.2 dpi) x 15.4 line/mm (391.16 dpi)

(Memory copy)

A4, Letter, Legal

1-1

Chapter 1

Multi-purpose tray

Plain Paper

paper type

Multi-purpose tray

Plain Paper: Approx. 100 sheets

capacity

Delivery tray stack Approx. 50 sheets (Face-down delivery slot)

Continuous

99 copies

reproduction

Energy save mode None

Operating environment

10 to 32.5 deg C

(Temperature range)

Operating environment

20 to 80 % RH

(Humidity range)

Power supply rating AC 200 to 240V, 50/60 Hz

Power consumption

500 W

(Maximum)

Power consumption Average during standby; approx. 3.5 W

Dimensions 372 (W)×578 (D)×404 (H) mm (including trays)

Weight Approx. 10 kg (including attachments)

Option Handset (CT-19)

Applicable lines Analog line (one line) / PSTN (Public Switched

Telephone Network)

Transmission method Half-duplex

Transmission control

protocol

ITU-T T.30 binary protocol / ITU-T V.8 protocol,

V.34 protocol

Modulation method G3 image signals: ITU-T V.27ter (4.8k, 2.4k bps) /

ITU-T V.29 (9.6k, 7.2k bps) / ITU-T V.17 (14.4k,

12.0k, TC9.6k, TC7.2k bps) / ITU-T V.34 (33.6k,

31.2k, 28.8k, 26.4k, 24.0k, 21.6k, 19.2k, 16.8k, 14.4k,

12.0k, 9.6k, 7.2k, 4.8k, 2.4k bps) / G3 procedure

signals: ITU-T V.21 (No.2) 300 bps / ITU-T V.8 300

bps / ITU-T V.34 1200 bps, 600 bps

Transmission speed 33.6k, 31.2k, 28.8k, 26.4k, 24k, 21.6k, 19.2k, 16.8k,

14.4k, 12k, TC9.6k, TC7.2k, 9.6k, 7.2k, 4.8k, 2.4k bps

/ (With automatic fallback function)

Coding method MH, MR, MMR

1-2

Error correction

method

ITU-T ECM

Chapter 1

Minimum transmission

10 msec. (MH/MR), 0 msec. (MMR)

time

Transmission output

0 to -15 dBm

level

Reception input level -9 to -43 dBm (V.34), 0 to -43 dBm (V.34 other)

Modem CONEXANT FM336Plus

Half tone 64-gradation error diffusion system

Memory scanning Approx. 448 sheets (When reading Canon FAX

Standard Chart No.1)

Printer function Yes

Dialing Manual dialling: Numeric button / Auto dialling: Max.

39 digits, One-touch: 15, Coded speed: 100 / Group

dial: Max.114 locations

Broadcast transmission Max. 116 locations (One-touch:15, Coded speed:100,

Numeric button:1)

Delayed transmission No. of Destination: Max. 116 / No. of Reservation:

Max. 20

Subaddress

Subaddress: Max. 20 digits / Password: Max. 20 digits

transmission

Confidential

Subaddress: Max. 20 digits / Password: Max. 20 digits

transmission

Relay broadcast

Subaddress: Max. 20 digits / Password: Max. 20 digits

originating

transmission

Relay broadcast

None

transmission

Polling transmission Direct transmission: None / Memory transmission:

Yse

Dual access Maximum reservation:20

FAX/TEL switching Method:CNG detection / Message: None / Pseudo CI:

None / Pseudo ring: Yse / Pseudo ringback tone: Yes

Answering machine

Yes

connection

Remote reception Method: ID call# (ID input method) / Remote ID (with

ID call#): 2 digits

Memory reception Approx. 448 page (Measured when receiving Canon

FAX Standard Chart No.1)

1-3

Chapter 1

Confidential reception None

Polling reception Subaddress: Max. 20 digits / Password: Max. 20 digits

Closed network

None

communication

System data backup Backup contents: dial registration data, user data,

service data, time / Backup IC: 220 kbit SRAM /

Backup battery: Lithium battery 3.0V DC/220 mAh /

Battery life: Approx. 5 years

Image data backup None

Activity management User report: / - Activity management report (Every 20

transactions) / - Activity report (sending/receiving) / -

One-touch speed dialling list / - Coded speed dialling

list / - Group dialling list / - Memory clear list / -

User's data list / - Multi activity report / - Document

memory list / Service report / - System data list / -

System dump list

Others Directory function: Yes / Transmitting terminal

identification: None/ Completion stamp: None /

Compre:tion stamp: None / Summer time function:

Yes / Residual Cartridge detecting: Yes

1-4

1.2 Detailed Specifications

Chapter 1

1.2.1 Time required for transmission protocol

0003-1068

T-1-1

Mode Pre-message

protocol

Post-message

protocol (between

pages)

Post-message

protocol (after

pages)

T.30 Standard Approx.12s Approx.4s Approx.3.5s

V.34 Approx.9s Approx.1s Approx.1s

Pre-message protocol:

Time from when other facsimile is connected to the line until image transmission begins.

Post-message protocol (between pages):

Time from after one document has been sent until transmission of the next document starts if several pages are

transmitted.

Post-message protocol (after pages):

Time from after image transmission is completed until line is switched from facsimile to telephone.

1.2.2 Scanning Range

[1]

[3]

[8]

[9]

[10]

F-1-1

[4][2]

[5]

[6]

[7]

0003-1109

1-5

Chapter 1

T-1-2

[1] Document leading edge [6] Effective scanning length

[2] Left margin [7] Bottom margin

[3] Effective scanning width [8] Scanning drop out range

[4] Right margin [9] Scanning range

[5] Top margin [10] Document trailing edge

T-1-3

Item A4 Letter Legal

Effective scanning width 208+/-1.0mm 213.9+/-1.0mm 213.9+/-1.0mm

Effective scanning length 293+/-3.0mm 275.4+/-3.0mm 361.6+/-3.0mm

Left margin 1.0+/-2.0mm 1.0+/-2.0mm 1.0+/-2.0mm

Right margin 1.0+/-2.5mm 1.0+/-2.5mm 1.0+/-2.5mm

Top margin 2.0+/-2.0mm 2.0+/-2.0mm 2.0+/-2.0mm

Bottom margin 2.0+/-2.0mm 2.0+/-2.0mm 2.0+/-2.0mm

1.2.3 Printing Range

[1]

[4][2]

[3]

[8]

[9]

0003-1123

[5]

[6]

[10]

F-1-2

1-6

[7]

T-1-4

[1] Paper leading edge [6] Effective printing length

[2] Left margin [7] Bottom margin

[3] Effective printing width [8] Printing drop out range

[4] Right margin [9] Printing range

[5] Top margin [10] Paper trailing edge

T-1-5

Item A4 Letter Legal

Effective printing width 206+/-2.0mm 207.9+/-2.0mm 207.9+/-2.0mm

Chapter 1

Effective printing length 288.9+/-3.0mm 271.4+/-3.0mm 347.6+/-3.5mm

Left margin 2.0+/-2.0mm 4.0+/-2.0mm 4.0+/-2.0mm

Right margin 2.0+/-3.0mm 4.0+/-3.0mm 4.0+/-3.0mm

Top margin 2.0+/-2.0mm 2.0+/-2.0mm 2.0+/-2.0mm

Bottom margin 6.0+/-4.0mm 6.0+/-4.0mm 6.0+/-4.5mm

1-7

Chapter 1

1.3 Names of Parts

1.3.1 External View

Front View

[1] [2]

[3]

[4]

[5] [6]

[7]

[8]

F-1-3

0003-1199

[9]

[10]

[11] [12]

[13]

[14]

T-1-6

Inside View

[1] Multi-purpose tray cover [8] Paper delivery selector

[2] Paper eject tray [9] Multi-purpose tray

[3] Document tray [10] Paper guide

[4] Face-down delivery slot [11] Multi-purpose tray

[5] Document guide [12] Latch

[6] Automatic Document Feeder (ADF) [13] Face-up delivery slot

[7] Operation panel [14] Document support

1-8

[1]

[2]

F-1-4

Chapter 1

[3]

[4]

[5]

T-1-7

[1] Toner cartridge compartment

Rear View

[1]

[2]

F-1-5

[2] Paper release lever

[3] Transfer charging roller

[4] Fixing ass'y

[5] Front cover

[3]

[4]

[5]

[6]

1-9

Chapter 1

T-1-8

[1] Power cord connector

[2] USB connector FAX-L295 only

[3] Connector jack

[4] Telephone line jack

[5] External device jack

[6] Handset jack

1.3.2 Operation Panel

[1] [2] [6] [7] [8][4][3] [5]

01 02 03

05 06 07

09 10 11

13 14

[9] [10] [11][12] [13] [14] [15]

F-1-6

[1] Directory key [9] One-touch speed dialling key

[2] Resolution key [10] Function key

ABC

GHI JKL MNO

TUV WXYZ

PQRS

T-1-9

0003-1291

DEF

1-10

[3] Clear key [11] Hook key

[4] LCD display [12] Cursor key

[5] OK key [13] Start/Copy key

[6] Coded dial key [14] Stop key

[7] Redial/Pause key [15] Numeric key

[8] R key

1.4 Safety

Chapter 1

1.4.1 Safety of Laser Light

Laser radiation could be hazardous to the human body. For this reason, laser radiation emitted inside this machine is

hermetically sealed within the protective housing and external cover. No radiation can leaak from the machine in the

normal operation of the product by the user.

1.4.2 Handling the Laser Unit

The laser scanner unit emits invisible laser light inside it. If exposed to laser light, the human eye can irreparably be

damaged. Never attempt to disassemble the laser scanner unit. (It is not designed for servicing in the field).

The covers around the laser scanner unit are identified by the following label [1].

[1]

0003-1317

0003-1330

F-1-7

1.4.3 Safety of Toner

The machine's toner is a non-toxic material composed of plastic, iron, and small amounts of dye.

Do not put the toner into fire. It may explode.

Toner on the Skin or Clothes

1. If your skin or clothes came into contact with toner, use dry tissue to remove the toner, and then wash with water.

2. Do not use warm or hot water, which will cause the toner to jell, permanently fusing it with the fibers of the clothes.

3. Do not bring toner into contact with vinyl material. They are likely to react with each other.

0003-1346

1-11

Chapter 2ޓTECHNICAL

REFERENCE

Contents

%QPVGPVU

2.1 Document Feed and Exposure System............................................................................................................... 2-1

2.1.1 Overview/Configuration.............................................................................................................................. 2-1

2.1.1.1 Overview .............................................................................................................................................. 2-1

2.1.1.2 Document Jam Detection ..................................................................................................................... 2-2

2.2 Laser Exposure ................................................................................................................................................... 2-3

2.2.1 Overview/Configuration.............................................................................................................................. 2-3

2.2.1.1 Overview .............................................................................................................................................. 2-3

2.3 Image Formation ................................................................................................................................................ 2-5

2.3.1 Overview/Configuration.............................................................................................................................. 2-5

2.3.1.1 Overview .............................................................................................................................................. 2-5

2.4 Pickup and Feed System..................................................................................................................................... 2-7

2.4.1 Overview/Configuration.............................................................................................................................. 2-7

2.4.1.1 Overview .............................................................................................................................................. 2-7

2.4.1.2 Paper size error..................................................................................................................................... 2-8

2.4.1.3 Paper delivery slot switching................................................................................................................ 2-8

2.4.2 Detection Jams ............................................................................................................................................ 2-9

2.4.2.1 Jam Detection Outline .......................................................................................................................... 2-9

2.4.2.1.1 Type so jams.................................................................................................................................. 2-9

2.4.2.2 Delay Jams.......................................................................................................................................... 2-10

2.4.2.2.1 Pickup delay jam ......................................................................................................................... 2-10

2.4.2.2.2 Delivery delay jam ...................................................................................................................... 2-10

2.4.2.3 Stationary Jams................................................................................................................................... 2-10

2.4.2.3.1 Pickup stationel jam .................................................................................................................... 2-10

2.4.2.3.2 Delivery stationary jam ............................................................................................................... 2-11

2.5 Fixing Unit ....................................................................................................................................................... 2-12

2.5.1 Overview/Configuration............................................................................................................................ 2-12

2.5.1.1 Overview ............................................................................................................................................ 2-12

2.5.2 Protective Function.................................................................................................................................... 2-12

2.5.2.1 Fixing heater failure ........................................................................................................................... 2-12

+ 134 hidden pages