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 content 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 editions 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 described in this manual are the registered trademarks of the individual
companies.
Copyright
This manual is copyrighted with all rights reserved. Under the copyright laws, this manual may not be copied,
reproduced or translated into another language, in whole or in part, without the written consent of Canon Inc..
5-1 Hakusan 7-Chome, Toride-city, Ibaraki 302-0023, Japan
DTP System
This manual was produced on an Apple Macintosh®personal computer, final pages were printed on Canon
SUPER LASER SHOT B406 PS.
All graphics were produced with Macromedia FreeHand®.
All documents and all page layouts were created with QuarkXPress®.
I. MEANING OF MARKS
The marks used in this manual have the following meanings.
MarkMeaning
States a precaution to be taken to prevent danger to personnel, damage to the product, or
damage to electronic components by discharge of static electricity. for example.
States a precaution to be taken to prevent damage to electronic components by
electrostatic discharge.
Informs you of fire-related cautions.
Informs you that the plug must be removed from the power outlet before starting an
operation.
Gives useful information to understand descriptions.
Indicates sections to be read to obtain more detailed information.
I
NOTE
REFERENCE
II. ABOUT THIS MANUAL
Part 1: Facsimile
This section describes the facsimile function of the respective product.
Part 2: Printer
This section describes the printer function of the respective product.
Each of the above parts is further divided into the following four chapters:
Chapter 1: General Description
This part explains product specifications and the how to service the unit safely. It is very important, so
please read it.
Chapter 2: Technical Reference
This part explains the technical theory of the product.
Chapter 3: Maintenance and Service
This part explains how to maintain the products for adjustment and troubleshooting and service
operations and service switches.
Chapter 4: Appendix
This part explains the informations of the optional products and user data flow.
• For more details of user operations and user reports, see the separate volume of
USER'S
GUIDE
.
• Procedure for assembly/disassembly and greasing points are not given in this manual.
See the illustrations in the separate volume of
PARTS CATALOG
.
• Detailed description of each SSSW/parameter is not given in this manual except the new
SSSWs/parameters added to this model.
See
G3 Facsimile Service Data Handbook (supplied separately)
for details them.
• See the
G3 Facsimile Error Code List (Rev.1, supplied separately)
for details of the
error codes not shown in this manual.
• Detailed description of connector Locations and Signal Descriptions in not given in this
manual.
See the
Circuit Diagram
for details them.
II
REFERENCE
This manual is divided into five parts, and contains information required for servicing the product.
III. REVISION HISTORY
REVISIONCONTENT
0Original
III
IV. TABLE OF CONTENTS
Page
Chapter 1: General Description
1 - 11. FEATURES
1 - 11.1 Overview
1 - 22. SPECIFICATIONS
1 - 22.1 General Specification
1 - 22.2 Communication Specification
1 - 32.3 Scanner Specification
1 - 52.4 Printer Specification
1 - 72.5 Copy Specification
1 - 82.6 Function
1 -113. OVERVIEW
1 -113.1 External View
1 -143.2 Operation Panel
1 -183.3 Consumables
1 -183.3.1 BJ cartridge and ink cartridge and BJ cartridge container
1 -203.3.2 Print media
1 -224. DIMENSIONS
1 -235. SAFETY & PRECAUTIONS
1 -235.1 Personnel Hazards
1 -255.1.1 Electrical shock
1 -255.1.2 High-temperature parts
1 -265.1.3 Fire hazards
1 -265.1.4 Moving parts
1 -265.1.5 Preventing ink stains
1 -275.2 General Cautions
1 -275.2.1 Unit cautions
1 -325.2.2 BJ cartridge cautions
1 -405.2.3 Ink cartridge cautions
1 -425.3 Servicing Cautions
1 -425.3.1 Damage from static charge
1 -425.3.2 Scanner unit
1 -435.3.3 Print assembly
1 -455.3.4 Paper feed section
1 -455.3.5 Control boards
1 -465.3.6 Opening the upper cover
1 -475.4 Data-related precautions
1 -485.4.1 Data in the image storage memory (DRAM)
1 -495.4.2 Data in the control processing memory (SRAM)
1 -505.4.3 Data in the EEPROM
1 -525.4.4 SCNT board replacement precautions
IV
Part 1: Facsimile
1 -535.4.5 Data initialization through service operation
1 -545.5 Protective Mechanism
1 -545.5.1 Data battery backup function
1 -545.5.2 BJ cartridge maintenance features
1 -555.5.3 Heat protection mechanism
1 -555.5.4 Overcurrent protection
1 -565.5.5 Lightning protection
1 -565.5.6 Power leakage protection
1 -576. QUALIFICATION REQUIRED FOR INSTALLATION WORK
Chapter 2: Technical Reference
2 - 11. COMPONENT LAYOUT
2 - 32. SCANNER MECHANISM
2 - 63. PAPER SUPPLY MECHANISM
2 -114. PRINTER SECTION
2 -185. BJ CARTRIDGE
2 -185.1 Structure
2 -215.2 BJ Head Driver Block Diagram
2 -235.3 Printing Signal
2 -256. ELECTRIC CIRCUIT
2 -256.1 Component Block Diagram
2 -266.2 Circuit Board Components
2 -296.3 Flow of Image Signals
2 -327. COMMUNICATION SYSTEM OPERATIONS
2 -327.1 FAX/TEL Switching
2 -327.1.1 Settings
2 -327.1.2 Parameters
2 -337.2 Answering Machine Connection
2 -337.2.1 Settings
2 -337.2.2 Parameters
2 -348. NEW FUNCTION
2 -348.1 Color Scanning Ability
2 -348.1.1 Contact sensor specifications
2 -358.1.2 Reading color documents
2 -358.1.3 Reading black & white documents
3 - 31.6 General Tools
3 - 31.7 Special Tools
3 - 42. HOW TO CLEAN PARTS
3 - 42.1 Main Unit Outer Covers
3 - 42.2 Separation Roller
3 - 42.3 Document Feed/Eject Roller
3 - 42.4 Separation Guide
3 - 42.5 Scanning Glass (Contact Sensor)
3 - 42.6 White Sheet
3 - 42.7 Printer Platen
3 - 63. ADJUSTMENT
3 - 63.1 CS LED Lights-on Duration Adjustment
3 - 73.2 Vertical Alignment Correction
3 -103.3 Head Gap Adjustment
3 -144. TROUBLESHOOTING
3 -144.1 Troubleshooting Index
3 -154.2 Errors Shown on the Display
3 -154.2.1 User error message
3 -194.2.2 Error codes
3 -264.3 Errors not Shown on the Display
3 -264.3.1 General errors
3 -274.3.2 Printing problem
3 -294.3.3 Scanning problem
3 -315. SERVICE SWITCHES
3 -315.1 Hardware Switches
3 -325.2 Service Data Setting
3 -325.2.1 Service data overview
3 -335.2.2 Service data registration/setting method
3 -345.2.3 Service data setting
3 -415.2.4 Explanation of service data
3 -425.2.5 New SSSWs/parameters added to this model
3 -526. TEST FUNCTIONS
3 -526.1 User Test Print Functions
3 -526.1.1 Nozzle check
3 -536.2 Service Test Functions
3 -536.2.1 Test mode overview
3 -546.2.2 Test mode flowchart
3 -556.2.3 D-RAM tests
3 -556.2.4 CS tests
3 -566.2.5 PRINT test
3 -586.2.6 Modem and NCU tests
3 -616.2.7 Faculty tests
3 -667. SERVICE REPORT
VI
3 -667.1 Report Output Function
3 -667.1.1 User report output functions
3 -687.1.2 Service report output functions
3 -768. WIRING DIAGRAM
3 -768.1 Wiring Diagram
3 -778.2 Connector Name and Signal Descriptions
Chapter 4: Appendix
4 - 11. INSTALLATION
4 - 11.1 Setting Up
4 - 11.2 Checking Operations
4 - 22. OPTION
4 - 22.1 HANDSET KIT
4 - 83. USER DATA FLOW
4 - 83.1 USER DATA FLOW (by Operation Panel)
4 -103.2 USER DATA FLOW (by MultiPASS Desktop Manager)
4 -153.3 SPECIAL MODE FLOW (by Operation Panel)
4 -174. MAKER CODE
INDEX
VII
Part 2: Printer
Chapter 1: General Description
1 - 11. FEATURES
1 - 22. SPECIFICATIONS
1 - 22.1 Basic Specifications
1 - 52.2 Interface Specifications
1 -103. OVERVIEW
1 -103.1 Interface Connector
1 -113.2 Printer Operation Panel
1 -124. SAFETY & PRECAUTIONS
1 -124.1 Personnel Hazards
1 -124.2 General Cautions
1 -124.2.1 Connecting the interface cable
1 -124.2.2 Data lost when power cord is pulled out
1 -124.2.3 Data reset
1 -135. RESTRICTIONS
3 - 5Figure 3- 1 Cleaning Location
3 - 6Figure 3- 2 CS LED Lights-on Duration Adjustment Operation
3 - 7Figure 3- 3 Printing the Test Pattern
3 - 7Figure 3- 4 Test Pattern Sample
3 - 8Figure 3- 5 Correct Test Pattern
3 - 8Figure 3- 6 Sample Test Pattern with Vertical Misalignment
3 - 9Figure 3- 7 Vertical Line Misalignment Correction Procedure
3 -10Figure 3- 8 Headgap
3 -11Figure 3- 9 Adjustment Preparation
3 -12Figure 3-10 Head Gap Adjustment (1)
3 -13Figure 3-11 Head Gap Adjustment (2)
3 -19Figure 3-12 Service Error Code Display
3 -27Figure 3-13 Paper Feed Motor/Carriage Motor/Document Feed Motor Connector
3 -28Figure 3-14 Defective Pattern (Sample)
3 -31Figure 3-15 Side Switch Location on NCU Board
3 -31Figure 3-16 Slide Switch Settings
3 -33Figure 3-17 Service Data Setting Method
3 -34Figure 3-18 Service Data (page 1)
3 -35Figure 3-19 Service Data (page 2)
3 -36Figure 3-20 Service Data (page 3)
3 -38Figure 3-21 Service Data (page 4)
3 -39Figure 3-22 Service Data (page 5)
3 -40Figure 3-23 Service Data (page 6)
3 -41Figure 3-24 Bit Switch Display
3 -41Figure 3-25 How to Read Bit Switch Tables
3 -52Figure 3-26 Nozzle Check Pattern
3 -54Figure 3-27 Test Mode
3 -55Figure 3-28 D-RAM Test
3 -56Figure 3-29 Print Test Pattern Check
3 -57Figure 3-30 Print Pattern Sample
3 -60Figure 3-31 CNG and DTMF Signal Reception Tests
XI
3 -62Figure 3-32 Sensor Tests
3 -64Figure 3-33 Operation Panel
3 -67Figure 3-34 Memory Clear List
3 -69Figure 3-35 System Data List (page 1 ~ page 4)
3 -70Figure 3-36 System Data List (page 5 ~ page 6)
3 -71Figure 3-37 System Dump List (1/2)
3 -73Figure 3-38 System Dump List (2/2)
3 -74Figure 3-39 Service Error Tx Report
3 -75Figure 3-40 Service Error Activity Report (receiving)
3 -76Figure 3-41 Wiring Diagram
Chapter 4: Appendix
4 - 8Figure 4- 1 User Menu Settings (1/7)
4 - 9Figure 4- 2 User Menu Settings (2/7)
4 -10Figure 4- 3 User Menu Settings (3/7)
4 -11Figure 4- 4 User Menu Settings (4/7)
4 -12Figure 4- 5 User Menu Settings (5/7)
4 -13Figure 4- 6 User Menu Settings (6/7)
4 -14Figure 4- 7 User Menu Settings (7/7)
4 -15Figure 4- 8 Special Mode Settings
4 -17Figure 4- 9 Maker Code
4 - 2Figure 4- 1 Location for the Printer
4 - 3Figure 4- 2 Attaching the Ferrite Core
4 - 3Figure 4- 3 Connecting the Interface Cable
XIII
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XIV
Part 1
Facsimile
Chapter 1
General
Description
1. FEATURES
1.1 Overview
This product is a G3 transreceiving facsimile based on the ITU-T recommendation. It can
be used in telephone networks.
*: This mark indicates new function.
Excellent print quality
The high-performance print head offers 360 × 360 dot per inch (dpi) resolution for text and
graphics.
Automatic switching between fax and voice calls
Fax/telephone switching allows you to receive fax messages and normal phone calls on a
single line.
BJ cartridgeREFER TO PAGE 2-18.
The BC-20 and BC-21/BC-21e BJ cartridges provide excellent print quality for crisp, cleanlooking documents.
Convenient paper handling
The paper tray holds up to 100 sheets of plain letter, legal, or A4 paper, and the automatic
document feeder can hold up to 20 letter-size, A4-size or 10 legal-size pages.
Simple maintenance
The replaceable ink cartridge contains the ink and the print head. When it runs out of ink,
simply replace it.
Ink detection functionREFER TO PAGE 2-16.
This model has a new ink detection function. After each received page is printed, ink is
ejected in front of a photosensor, so that the machine can detect whether there is ink
remaining or not.
Copy function
This machine can make up to 99 black and white (including halftones) copies of a document
at a time, at a rate of up to three copies per minute.
It can also make one color copy at a time at a rate of ten minutes per copy.
Full-color and 256-level gray-scale (for PC)REFER TO PAGE 2-34.
By using the settings in the MultiPASS Desktop Manager software, you can scan photos in
full color or with 256 levels of gray, rather than just in black and white, ensuring that photos
are reproduced as clearly as
possible.
High-resolution scanning
This machine can scan documents at true resolutions of 30 ~ 300 dpi, or
electro-enhanced resolutions of 301 ~ 600 dpi.
Chapter 1: General Description
1-1
✕ D ✕ H)15.75" × 14.37" × 8.07" (400 mm × 365 mm × 205 mm)
Products name BC-20 Black BJ cartridge/BC-21 Color BJ cartridge/BC-22
Photo Color BJ cartridge
Product codeF45-0561/F45-0571/F45-1141
Print head 128 nozzles/136 nozzles (Y:24, M:24, C:24, Bk:64)/136 nozzles
Ink cartridge (Ink tank)None/BCI-21 Color or BCI-21 Black/None
Valid period1 year/half a year (since the seal was opened)/1 year
Storage conditionsTemperature32.0°F ~ 95.0°F (0°C ~ 35°C)
Humidity35% ~ 85% RH
Ink Cartridge
Products name BCI-21 Black Ink Cartridge/BCI-21 Color Ink Cartridge
Product codeF47-0731/F47-0741
Ink contains9 ml/5 ml each of YMC
Ink detectionYes (Directly detects ink ejection )
Printing speedApprox. 5 pages/minute (in case of character print)
Printing resolution360 dpi × 360 dpi (Normal print)
180 dpi
× 180 dpi (Economy print*)
*Printing in a checkered pattern without printing vertical and horizontal adjacent dots.
Paper output tray stackingApprox. 50 sheets (when using the recommended paper)
Approx. 20 sheets (when raised output guides)
Paper tray
Paper supply methodASF (Auto Sheet Feeder)
Number of paper tray1 tray : Legal/Letter/A4 (Universal )
Paper capacityMax. 0.40" (10 mm) thickness
plain paper (Approx. 100 sheets)
Recommended paper
KANGAS
Weight80 g/m
2
Paper sizeA4
Manufactured byKANGAS
NEUSIDLER Canon paper
Weight80 g/m
2
Paper sizeA4
Manufactured byNEUSIDLER
1-5
Part 1: Facsimile
Printing range
Paper dimensions (W × L)
Letter8.50" × 10.98" (216 mm × 279 mm)
Legal8.50"
A48.27"
Reduction settings for receptionYes
Automatic reduction of reception imagesYes (100%~70%)
Built-in Answering machineNone
Answering machine connectionYes (Telephone answering priority type)
Remote receptionYes (Remote ID method)
Memory lock receptionNone
Reception printing in reverse orderNone
Polling
Polling transmissionNone
Polling receptionNone
1-8
Chapter 1: General Description
Others
Closed networkNone
Direct mail preventionNone
Reception printing in reverse orderNone
Memory boxNone
Memory backup
Backup contentsDial registration data, User data, Service data,
Time
Backup IC256 kbit SRAM for control
Backup deviceLithium battery 3.0V DC/600 mAh
Battery lifeApprox. 5 years
Image data backupNone
Activity managementYes
a) User report
Activity management report (Every 20 transactions : always transmission and reception
together)
Activity report (sending/receiving)
One-touch speed dialling list(by SPECIAL MODE)
Coded speed dialling list(by SPECIAL MODE)
Group dialling list(by SPECIAL MODE)
Memory clear list
User’s data list(by SPECIAL MODE)
Multi activity report