Download Canon -- BJC-1000 -- Service Manual

REVISION 0
DEC. 1998
QY8-1364-000
COPYRIGHT © 1998 CANON INC. CANON BJC-1000 1298 SC 0.40-0 PRINTED IN JAPAN (IMPRIME AU JAPON)
1298 SC 0.40-0
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 could include technical inaccuracies or typographical errors due to improvements or
changes in the 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 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 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., except in the case of internal business use.
Copyright © 1998 by Canon Inc.
CANON INC.
BJ Products Technical Support Dept
16-1, Shimonoge 3-chome, Takatsu-ku, Kawasaki-shi, Kanagawa 213-8512, Japan
This manual was produced on an Apple Macintos™ Power Mac 8500/180 personal computer and
Apple LaserWriter™16/600PS-J laser beam printer; final pages were printed on Varityper™ 5300 with
4000-J RIP. All graphics were produced with MACROMEDIA® FREEHAND® 7.0J.
All documents and all page layouts were created with QuarkXPress™ 3.3J.
I. ABOUT THIS MANUAL
This manual is divided into five sections, and contains information required for servicing
the unit.
Part 1: Safety and Precautions
This section tells you how to service the unit safely. It is very important, so please read
it.
Part 2: Product Specifications
This section outlines the products specifications.
Part 3: Operating Instructions
This section explains how to operate the unit properly, and contains information
required for installation and service.
Part 4: Technical Reference
This section outlines the way the unit operates so you can understand it technically.
Part 5: Maintenance
This section explains how to maintain the unit. Descriptions of assembly/disassembly,
adjustment for assembly, troubleshooting procedures, and wiring/circuit diagrams are
given.
REF.
Procedures for assembly/disassembly are not given in this manual.
See the illustrations in the separate Parts Catalog.
I
II. TABLE OF CONTENTS
Part 1: Safety and Precautions
Page
1- 1
1- 1
1- 2
1- 2
1- 3
1- 4
1- 4
1- 4
1- 4
1- 4
1- 5
1- 5
1- 5
1- 6
1- 6
1- 7
1- 7
1- 8
1- 9
1- 9
1. PERSONAL SAFETY PRECAUTIONS
1.1 Moving and Rotating Parts
1.2 Ink Stains
1.2.1 Ink path
1.2.2 Ink mist
2. MACHINE PRECAUTIONS
2.1 Precautions for Handling BJ Cartridges
2.1.1 Turning the printer ON/OFF
2.1.2 When the printer is not in use
2.1.3 Transportation precautions
2.1.4 Ink electroconductivity
2.2 Printer Handling
2.2.1 Spur deformation prevention
2.2.2 Precautions to prevent damage from static electricity
2.2.3 Ink leakage precautions
3. PRECAUTIONS FOR SERVICE
3.1 EEPROM Data Precautions
3.2 Static Electricity Precautions
3.3 Disassembly and Reassembly Precautions
3.4 Built-in Self-diagnostic Functions
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1. PRODUCT OUTLINE
1.1 Product Outline
1.2 Features
1.3 BJ Cartridge
1.3.1 Color and Photo BJ cartridges
1.3.2 Black BJ cartridge
1.4 BJ Cartridge Container
1.5 Consumables
1.5.1 BJ cartridges (Black, Color, and Photo)
2. SPECIFICATIONS
2.1 General Specifications
2.2 Paper Specifications
2.2.1 Paper setting
2.2.2 Printing range
2.3 Interface Specifications
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1. PRINTER SETUP
1.1 Equipment Check
1.2 Printer Dimensions
1.3 Setup Procedure
1.3.1 Connecting the interface cable
1.3.2 Turning on the printer
1.3.3 Installing the cartridge
1.3.4 BJ cartridge container
1.4 Turning the Printer On/Off
1.4.1 Turning the printer on
1.4.2 Turning the printer off
1.5 Paper Settings
1.6 Banner Printing
Part 2: Product Specifications
Part 3: Operating Instructions
II
Page
3- 8
3 -10
3 -10
3 -11
3 -11
3 -11
3 -12
3 -13
3 -13
3 -13
1.7 Name of the Parts and Their Functions
2. PRINTER SERVICING FUNCTIONS
2.1 Error Indications
2.2 Cleaning the BJ Cartridge
2.3 Self-Test Printout
2.3.1 Nozzle check pattern
2.3.2 Service test print
2.4 EEPROM Reset
2.4.1 EEPROM Reset
2.4.2 Printing the EEPROM data
4- 1
4- 1
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4- 5
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4 -11
4 -12
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4 -18
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4 -23
4 -24
4 -24
4 -25
4 -25
4 -26
4 -28
4 -28
4 -28
4 -28
4 -29
4 -29
1. OVERVIEW
1.1 Block Diagram
1.2 Printing Signal Flow
1.3 Print Drive
1.3.1 Printing drive control
2. FIRMWARE
2.1 720 dpi Printing/Smoothing Feature
2.1.1 Canon extension mode
2.2 Printing Modes
2.2.1 Printing mode
2.3 Optimum Printing Direction Control
3. PRINTER MECHANICAL SYSTEM
3.1 Overview
3.1.1 Mechanical components
3.2 BJ Cartridge
3.2.1 Black BJ cartridge structure
3.2.2 Color/Photo BJ cartridge structure
3.2.3 Bubble head unit structure
3.3 Purge Unit
3.3.1 Purge unit functions
3.3.2 Purge unit structure
3.4 Carriage
3.4.1 Carriage functions
3.4.2 Carriage structure
3.5 Paper Feed
3.5.1 Outline of the paper feed
3.5.2 Structure of the sheet feeder
4. PRINTER ELECTRICAL SYSTEM
4.1 Overview
4.2 Logic Section
4.2.1 Logic section block diagram
4.2.2 Logic section components
5. SENSOR FUNCTIONS
5.1 Pick-Up Roller Sensor
5.2 Paper End Sensor
5.3 Home Position Sensor (Purge Sensor)
5.4 Temperature Sensor
5.5 Waste Ink Amount Detection
Part 4: Technical Reference
III
Page
Part 5: Maintenance
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5- 1
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5 -25
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5 -25
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1. MAINTENANCE & SERVICING TOOLS
1.1 Maintenance
1.1.1 Parts for Regular Replacement
1.1.2 Consumables
1.1.3 Periodic Maintenance
1.2 Servicing Tools
2. GREASE APPLICATION
3. DISASSEMBLY AND REASSEMBLY
3.1 Disassembly and Reassembly
3.2 Disassembly and Reassembly Cautions
3.3 Logic Board and Bottom Cover Replacement Cautions
3.3.1 Logic board replacement cautions
3.3.2 Cautions after replacing the bottom cover
4. TROUBLESHOOTING
4.1 Troubleshooting
4.1.1 Overview
4.1.2 Troubleshooting cautions
4.2 Error Condition Diagnosis
4.2.1 Initial self check
4.2.2 Error recovery
5. LOCATION & SIGNAL ASSIGNMENT
5.1 Logic Board
5.2 Carriage Ribbon Cable
5.3 BJ Cartridges
6. CIRCUIT DIAGRAMS
6.1 Parts Layout
6.1.1 Logic board
6.2 Circuit Diagram
IV
III. ILLUSTRATION INDEX
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2- 8
2 -13
2 -13
3- 1
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3- 5
3- 5
3- 6
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
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2- 10
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3- 2
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3- 5
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3- 7
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3- 9
3 -11
3 -12
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4 -10
4 -11
4 -12
4 -13
4 -13
4 -14
4 -14
4 -15
4 -15
4 -16
4 -18
4 -19
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
3- 9
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4- 11
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4- 15
4- 16
4- 17
4- 18
Moving and Rotating Parts
Ink Path
Ink Mist
Storing the BJ Cartridge
Spurs
Contact Section of the Carriage Ribbon Cable
Capping Position
Printer Electrical System
How to Release Plastic Hooks
Printer Appearance
Color and Photo BJ Cartridges
Black BJ Cartridge
BJ Cartridge Container
Consumables
Printing Area
Printing Area (Envelope)
Printing Area (Banner Paper)
Timing Chart (Compatible Mode)
Timing Chart (Nibble Mode)
Packaging
Printer Dimensions
Connecting the Interface Cable
Removing the BJ Cartridge Protectors
BJ Cartridge Handling Precautions
Cartridge Installation
BJ Cartridge Container
Never unplug the power cord less than one minute after completing
an operation
Banner Printing
Name of the Parts and Their Functions (1)
Name of the Parts and Their Functions (2)
Paper Thickness Lever
Nozzle Check Pattern
Service Test Print
Block Diagram
Printing Signal Flow
Nozzle Arrangement
Printing Signals
720 dpi Printing/Smoothing Feature
Printer’s Mechanical Configuration
Black BJ Cartridge Structure
Color/Photo BJ Cartridge Structure
Bubble Jet Nozzles (Partial View)
Nozzle Arrangement
Contact Pad
Bubble Jet Head Driver Block Diagram (Black BJ Cartridge)
Bubble Jet Head Driver Block Diagram (Color BJ Cartridge)
Bubble Jet Head Driver Block Diagram (Photo BJ Cartridge)
Head Rank ID
Head Temperature Controller
Purge Unit
Carriage
V
Page
4 -20
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4 -25
4 -25
4 -28
5- 2
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5 -25
5 -26
Figure
Figure
Figure
Figure
Figure
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Figure
Figure
Figure
Figure
Figure
Figure
4- 19
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5- 1
5- 2
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5- 6
5- 7
Paper Thickness Adjustment
Paper Feed Motor Drive Transmission
Paper Feed Mechanism
Paper Separator
Printer Electrical System
Logic Board Block Diagram
Printer Block Diagram
Sensors
Grease Application Points
Bottom Cover
Logic Board
Carriage Ribbon Cable
Contact Pad
Logic Board (Top View)
Logic Board (Bottom View)
VI
IV. TABLE INDEX
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3 -10
3 -13
4- 6
4 -29
5 -23
TABLE
TABLE
TABLE
TABLE
TABLE
TABLE
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QUICK REFERENCE FOR SETTING
ERROR INDICATIONS
DEFAULT SETTING WHEN RESETTING THE EEPROM
PRINTING MODES AND HEATING METHODS
LIST OF SENSOR FUNCTIONS
BJ CARTRIDGE RECOGNITION
VII
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VIII
Part 1
SAFETY AND
PRECAUTIONS
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1- 4
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1- 9
1- 9
1. PERSONAL SAFETY PRECAUTIONS
1.1 Moving and Rotating Parts
1.2 Ink Stains
2. MACHINE PRECAUTIONS
2.1 Precautions for Handling BJ Cartridges
2.2 Printer Handling
3. PRECAUTIONS FOR SERVICE
3.1 EEPROM Data Precautions
3.2 Static Electricity Precautions
3.3 Disassembly and Reassembly Precautions
3.4 Built-in Self-diagnostic Functions
Part 1: Safety and Precautions
BJC-1000
1. PERSONAL SAFETY PRECAUTIONS
1.1 Moving and Rotating Parts
Be careful not to let your hair, clothes, accessories, etc., become caught up in the
moving and rotating parts of the printer. The moving and rotating parts, the carriage
belt, idler roller, and carriage, are driven by the carriage motor, and the slow down gear,
paper feed roller, pressure roller, eject roller, spurs, and pick-up roller, etc., are driven
by the paper feed motor.
Be careful not to touch the spurs as they are sharply pointed.
Carriage Belt
Pick-up Roller
Idler Roller
Carriage
Paper Feed Motor
Slow Down Gear
Carriage Motor
Pressure Roller
Spur
Eject Roller
Paper Feed Roller
Figure 1-1 Moving and Rotating Parts
1-1
Part 1: Safety and Precautions
BJC-1000
1.2 Ink Stains
1.2.1 Ink path
Be careful not to touch the ink path as it may stain the printer, your hands, or clothes
during repair.
The ink path is the nozzle section of the BJ cartridge, head cap, head wiper,
maintenance jet receiving section, and the waste ink absorbers.
For the color BJ cartridge, the ink inlets of the ink cartridge and the joint pipes of the
print head body are also part of the ink path, so take the same care with them.
CAUTION
The ink is not a harmful substance to the human body, but it does contain
organic solvents.
Black ink: isopropyl alcohol 67-63-0, glycerin 56-81-5
Color ink: isopropyl alcohol 67-63-0, glycerin 56-81-5
Take care not to get ink in the mouth or eyes. If ink does get into the eyes,
wash it out with plenty of water and consult a doctor immediately. If, for
some reason, a large amount of the ink is swallowed, consult a doctor
immediately.
Please provide the doctor with the information printed on the BJ cartridge
label. This ink contains dyes, and cannot be removed from clothing, etc.
BJ Cartridge
Head Wiper
Head Cap
Ink Absorber
Figure 1-2 Ink Path
1-2
Part 1: Safety and Precautions
BJC-1000
1.2.2 Ink mist
The BJ cartridge ejects ink onto the paper. However, after the printer has been used
for a long period of time or under heavy duty use, a small amount of ink mist
bouncing back off the paper during printing can dirty the inside of the front cover and
platen area.
Wipe the dirty areas with a soft damp cloth as this ink can dirty the paper, or the
hands or clothing of service personnel.
Platen
Front Cover
Figure 1-3 Ink Mist
1-3
Part 1: Safety and Precautions
BJC-1000
2. MACHINE PRECAUTIONS
2.1 Precautions for Handling BJ Cartridges
2.1.1 Turning the printer ON/OFF
The printer will automatically cap the cartridge heads one minute after printing
operations are completed, to prevent the ink from leaking or drying out.
When unplugging the power cord, wait at least one minute after completing an
operation such as printing, feeding paper, cleaning the print head, etc.
If the power cord is accidentally unplugged before one minute has passed, replug the
AC adapter and wait for more than one minute before unplugging the power cord.
CAUTION
If the nozzles are not capped, the ink may leak or dry out, causing the
nozzles to clog.
2.1.2 When the printer is not in use
BJ cartridges should be stored either installed in the printer or in the BJ cartridge
container.
CAUTION
If the BJ cartridge is removed from the printer or BJ Cartridge Container,
the ink may leak or dry out, causing the nozzles to clog.
2.1.3 Transportation precautions
When transporting the printer, follow the procedure below.
1) Disconnect the interface cable and AC power cord as described above in Part 3: 1.3
Setup Procedure (page 3-3).
2) Put the BJ cartridge in the BJ cartridge container.
3) Repack the printer in its original box and packing materials.
Figure 1-4 Storing the BJ Cartridge
NOTE
If you do not have the original packing materials, use an ample amount of
shock-absorbing materials.
1-4
Part 1: Safety and Precautions
BJC-1000
2.1.4 Ink electroconductivity
The ink in the BJ cartridge is electroconductive. If ink leaks into the printer’s
mechanical parts, use a damp paper towel, etc., to wipe clean. If it leaks into the
printer’s electrical components, use tissue paper, etc., to wipe clean completely. If ink
gets into the IC chips on the PCB and it is difficult to clean, replace the PCB.
CAUTION
If ink has leaked inside the printer, do not plug in the power cord. It may
damage the circuitry.
2.2 Printer Handling
2.2.1 Spur deformation prevention
Do not deform the spurs. If spurs are deformed, their contact area with the printed
paper increases, causing more ink to adhere. This can lead to the paper becoming
stained with ink. (A dotted line may appear where the spurs have contacted the
paper.)
Figure 1-5 Spurs
1-5
Part 1: Safety and Precautions
BJC-1000
2.2.2 Precautions to prevent damage from static electricity
The electrostatic charge accumulated on clothing can damage electric elements and
their characteristics. Do not touch the contact points of the carriage ribbon cable and
BJ cartridge.
Electrostatic Discharge
Contact
Points
Figure 1-6 Contact Section of the Carriage Ribbon Cable
2.2.3 Ink leakage precautions
Do not carry, pack or store the printer without a BJ cartridge installed. The ink
within the purge unit may flow back and contaminate the inside of the printer. When
packing up the printer, make sure the carriage is in the capping position (the right
end of the platen).
Head
Cap
Figure 1-7 Capping Position
1-6
Part 1: Safety and Precautions
BJC-1000
3. PRECAUTIONS FOR SERVICE
3.1 EEPROM Data Precautions
The printer keeps track of various settings, the total waste ink amount, and the total
sheets printed with the black, color and photo BJ cartridges. This data is stored in the
EEPROM on the logic board. Note the following precautions during servicing:
1) Before servicing
Check the EEPROM data with a test print. The total sheets printed can give you an
idea of how much the printer has been used.
2) During logic board (EEPROM) replacement
Always visually check the waste ink amount absorbed by the waste ink absorbers
and replace them when necessary as explained in Part 5: 3.3 Logic Board and Bottom
Cover Replacement Cautions (page 5-4).
If the waste ink absorbers are not visually checked regularly, they may reach or
exceed their full capacity before “waste ink full” is detected. The waste ink may
therefore start leaking.
The memory data for the replacement logic board (EEPROM) is not defined.
Therefore, after replacing the logic board (and EEPROM), reset the total waste ink
amount to zero by clearing the data.
3) After bottom cover unit replacement
After replacing the bottom cover unit, reset the total waste ink amount to zero by
clearing the EEPROM data.
CAUTION
REF.
After the EEPROM is reset, the data it contained cannot be printed out
with a test printout. If you want to check the stored data, be sure to
execute test printout before resetting the EEPROM.
When the stored data is reset, the various settings, the total count of
printed sheets, and the total waste ink amount will all be reset. The total
sheets printed and waste ink amount cannot be input using the operation
panel.
Immediately after the printer is turned on, it keeps track of the estimated
waste ink amount based on the usage conditions. To prevent ink leakage
when the waste ink amount exceeds the waste ink absorption capacity, the
printer stops printing and indicates an error when the waste ink
absorption capacity is close to being full.
For details on checking the EEPROM data with a test printout and for
clearing the data, see Part 3: 2.4 EEPROM Reset (page 3-13).
If the printer stops operating in the case of a waste ink full error, follow the
countermeasures described in Part 5: 4.1 Troubleshooting (page 5-5).
1-7
Part 1: Safety and Precautions
BJC-1000
3.2 Static Electricity Precautions
The electrostatic charge accumulated in clothing can damage electric elements and
their characteristics. In order to prevent static electricity, touch a metallic part that is
grounded to release the static electricity before disassembling the printer for servicing.
Before discharging static electricity, do not touch electrical sections such as the logic
board and contact points of the carriage ribbon cable (see Figure 1-6 ) when the carriage
ribbon cable is connected to the logic board.
Electrostatic Discharge
Logic Board
Figure 1-8 Printer Electrical System
1-8
Part 1: Safety and Precautions
BJC-1000
3.3 Disassembly and Reassembly Precautions
The printer is comprised of a large number of plastic parts. When disassembling the
printer, take care not to break or bend plastic hooks.
CAUTION
Some plastic parts contain glass fibers for extra rigidity and precision, but
since their viscosity is low, plastic hooks can break easily when excessive
force is used. Use a precision screwdriver, and do not pull plastic hooks
with excessive force when unhooking them.
Never apply excessive force
Hook
when releasing a hook.
Figure 1-9 How to Release Plastic Hooks
3.4 Built-in Self-diagnostic Functions
The printer has built-in self-diagnostic functions to detect hardware defects. The
results of self-diagnosis are indicated on the host computer's screen as an error. (The
host computer should be set in nibble mode, and use the BJ status monitor under
Windows 95/98.) For details, refer to Part 3: 2.1 Error Indications (Page 3-10).
1-9
Part 1: Safety and Precautions
BJC-1000
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1-10
Part 2
PRODUCT
SPECIFICATIONS
Page
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1. PRODUCT OUTLINE
1.1 Product Outline
1.2 Features
1.3 BJ Cartridge
1.4 BJ Cartridge Container
1.5 Consumables
2. SPECIFICATIONS
2.1 General Specifications
2.2 Paper Specifications
2.3 Interface Specifications
Part 2: Product Specifications
BJC-1000
1. PRODUCT OUTLINE
1.1 Product Outline
This printer enjoys the realization of photo-like high image quality printing.
The printer uses three types of BJ cartridges: the color BJ cartridge, the photo BJ
cartridge and the black BJ cartridge. The printer is capable of high-speed, high-quality
360 dpi ✕ 360 dpi (H ✕ V) printing. Also, with the black BJ cartridge, smoothing can be
used to obtain a resolution of 720 dpi ✕ 360 dpi (H ✕ V).
This new compact printer is light in weight and very economically priced.
Paper Support
Cut Sheet Feeder
Paper Guide
Reset button
Front Cover
AC Adapter
Parallel Interface Connector
Figure 2-1 Printer Appearance
2-1
Part 2: Product Specifications
BJC-1000
1.2 Features
1. Compact (desk-top size)
External dimensions: 360 mm (W) ✕ 174 mm (D) ✕ 160 mm (H)
Weight: Approx. 2.2 kg (4.9 lbs) (excluding BJ cartridge and options)
2. Only RESUME button on the operation panel (No LED and buzzer)
Errors will be displayed on the host computer monitor. (The host computer should
be set to Nibble mode and use the BJ status monitor with Windows95/98.)
3. New AC adapter
4. High quality printing of 720 ✕ 360 dpi
(Smoothing: With black BJ cartridge BC-02 and exclusive printer driver)
5. Windows exclusive printer (used with the Canon original printer driver)
6. Photo printing capability
7. Banner printing capability
8. New image processing technology “Image Optimizer” supported by the driver.
(Image optimizer: a function to reduce “jaggies” which occur when enlarging low
resolution images.)
9. Improved printer driver color matching processing
10. Device ID and status response function compatible with Windows95/98 Plug & Play
(Responds to the device ID/status of nibble mode)
11. New leverless sheet feeder
12. New carriage
2-2
Part 2: Product Specifications
BJC-1000
1.3 BJ Cartridge
1.3.1 Color and Photo BJ cartridges
The color and photo BJ cartridges each contain 3 ink colors; yellow, magenta and
cyan. With these 3 colors, composite black can be produced.
The first 16 nozzles are for yellow, the following 8 nozzles are unused, the second 16
nozzles are for magenta, then 8 nozzles unused, and the third 16 nozzles are for cyan.
They are lined vertically.
When using the color or photo BJ cartridge, 360 (H) ✕ 360 (V) dpi printing is possible.
Photo-like printing can be realized by using the photo BJ cartridge.
Use the high resolution paper HR-101 when printing with photo BJ cartridge.
Since the three color inks in the color and photo BJ cartridge are integrated, when one
color ink runs out, the BJ cartridge must be replaced. Also, when more than 6
months have passed after the cartridge is unpacked, or if the printing quality is not
improved even after cleaning the head over five times, replace the BJ cartridge.
BC
BC
Ph
ot-o06
-05
Figure 2-2 Color and Photo BJ Cartridges
1.3.2 Black BJ cartridge
The black BJ cartridge holds black ink only. The print head has 64 nozzles, all of
which are used for black printing.
When using the black BJ cartridge in the smoothing mode, 720 (H) ✕ 360 (V) dpi
printing is possible.
When the ink runs out, or more than 6 months have passed after the cartridge is
unpacked, or if the printing quality is not improved even after cleaning the head over
five times, replace the black BJ cartridge.
BC
-02
Figure 2-3 Black BJ Cartridge
2-3
Part 2: Product Specifications
BJC-1000
1.4 BJ Cartridge Container
The cartridge container is used for storing a BJ cartridge which is not being used.
When storing a BJ cartridge in this container, be sure to close the cover completely.
Store a BJ cartridge, which are not installed in the printer.
Figure 2-4 BJ Cartridge Container
1.5 Consumables
1.5.1 BJ cartridges (Black, Color, and Photo)
BC
-02
Black BJ Cartridge
BC
-05
Color BJ Cartridge
PhBC-0
oto 6
Photo BJ Cartridge
Figure 2-5 Consumables
The numbers of sheets that can be printed with the color and black cartridges are :
Black BJ cartridge (BC-02)
About 450 sheets : (HQ mode, 1500 character pattern, continuous printing)
Color BJ cartridge (BC-05)
About 80 sheets: (HQ mode, 7.5% duty per color pattern*, continuous printing)
About 100 sheets: (HQ mode, 7.5% duty per color pattern*, intermittent printing)
Photo BJ cartridge (BC-06 photo)
About 45 sheets: (HQ mode, 7.5% duty per color pattern*, continuous printing)
* Color print pattern for C/M/Y/Bk
2-4
Part 2: Product Specifications
BJC-1000
2. SPECIFICATIONS
2.1 General Specifications
1. Type
Desktop serial color bubble jet printer
2. Paper feeding method
Auto sheet feed
3. Resolution
720 dpi ✕ 360 dpi
(Smoothing: With black BJ cartridge and exclusive printer driver)
4. Stacking capacity of sheet feeder
Plain paper
Max. 5 mm stack (approx. 50 pages with 75 g/m2 paper)
LGL size: Max. 10 pages
Envelopes
5 envelopes
Post card
20 pages
Transparencies
20 pages
Back print film
10 pages
Glossy photo paper 1 page
High gloss film
1 page
Fabric
1 page
T-shirt transfer
1 page
Banner paper
1 page
5. Paper size
Letter (8.5" ✕ 11")
Legal (8.5" ✕ 14")
A5 (148 mm ✕ 210 mm)
A4 (210 mm ✕ 297 mm)
Commercial number 10 envelopes (4.11" ✕ 9.5")
European DL-size envelopes (220 mm ✕ 110 mm)
6. Paper type
Plain paper
Envelopes (Commercial number 10 or European DL-size)
Transparencies (Canon Transparencies CF-102)
Back print film (Canon Back Print Film BF-102)
Glossy photo paper (Canon Glossy Photo Paper GP-301)
High gloss film (Canon High Gloss Film HG-101)
High resolution paper (Canon High Resolution Paper HR-101)
Bubble jet paper (Canon Bubble Jet Paper LC-301)
Fabric (Canon Fabric Sheet FS-101)
Banner paper (Canon Banner Paper BP-101)
T-shirt transfer (Canon T-Shirt Transfer TR-201)
7. Paper weight
Automatic feed
64 to 105g/m2 (17 lbs to 28 lbs)
2-5
Part 2: Product Specifications
BJC-1000
8. Printing speed (Throughput)
HQ mode
HS mode
Color printing (BC-05)
0.5 ppm
0.6 ppm
Monochrome printing (BC-02)
3.2 ppm
4.0 ppm
9. Printing direction
Switching unidirectional
(Printing direction automatically changes according to the print data/print
mode/installed cartridge type)
10. Print width
Max. 203.2 mm (8")
11. Line feed speed
Approx. 80 ms/line (64/360" line feed)
12. Built-in print control mode
Canon extended mode is supported when using the Canon original printer driver.
13. Receive buffer
10 KBytes
14. Interface
IEEE1284 compatible 8-bit parallel
15. BJ cartridges
BC-02 (black BJ cartridge)
Print head
64 nozzles in a vertical line
Ink color
Black
No. of pages printable
Approx. 450 pages (HQ mode, 1500 character pattern,
continuous printing)
Weight
Approx. 58.5g (2.1 oz)
BC-05 (color BJ cartridge)
Print head
48 nozzles in a vertical line: YMC (16 nozzles ✕ 3)
Ink color
Cyan, magenta, yellow (Black is composite black.)
No. of pages printable
Approx. 80 pages (HQ mode, YMCBk 7.5% duty per
color pattern, continuous printing)
Weight
Approx. 62g (2.2 oz)
BC-06 Photo (photo BJ cartridge)
Print head
48 nozzles in a vertical line: YMC (16 nozzles ✕ 3)
Ink color
Cyan, magenta, yellow (Black is composite black.)
No. of pages printable
Approx. 45 pages (HQ mode, YMCBk 7.5% duty per
color pattern, continuous printing)
Weight
Approx. 62g (2.2 oz)
2-6
Part 2: Product Specifications
BJC-1000
16. Detection functions
Paper out
Presence of BJ cartridge
Waste ink amount
Paper width
Distinction of cartridge
Ink out
Available
Available
Available
None
Available
None
17. Noise
Sound pressure level*
Approx. 45 dB (A)
*:Conforming to sound pressure level ISO 9296
18. Environmental requirements
Temperature
During operation
5°C to 35°C
(41°F to 95°F)
Non operation
0°C to 35°C
(32°F to 95°F)
Humidity
10% to 90%RH
(no condensation)
5% to 95%RH
(no condensation)
19. Power supply
Input voltage/Frequency
AC 100 to 120V, 50/60 Hz
AC 220 to 240V, 50/60 Hz
Stand-by status
Approx. 2W (Max.)
Approx. 2W (Max.)
Power consumption
Approx. 20 W (Max.)
Approx. 20 W (Max.)
20. External dimensions
360 mm W ✕ 174 mm D ✕ 160 mm H
21. Weight
Approx. 2.2kg (4.9 lbs) (excluding BJ cartridge and option)
2.2 Paper Specifications
2.2.1 Paper setting
Media
Plain paper
Bubble jet paper
Envelopes
Transparencies
Back print Film
Glossy photo paper
High gloss film
High resolution paper
T-shirt transfers
Fabric sheet
Banner paper
Thickness Lever
Left
Left
Right
Left
Left
Right
Left
Left
Left
Right
Right
Max. stacking height
5 mm (LGL: 10 pages)
5 mm
5*1
20 pages*1
10 pages*1
1 page*1
1 page*1
5 mm
1 page*1
1 page*1
1 page*2
*1:Each time a sheet is printed out, remove it from the tray. If the printed sheets
stack immediately after they are delivered out, the ink, if not dried, may transfer to
other sheets.
*2:Add one to page-length to the number of pages to be printed. The maximum length
of banner data that can be printed at a time is up to six pages long. For example,
when printing data of a length of 3 pages, use a length of paper equal to 4 pages.
2-7
Part 2: Product Specifications
BJC-1000
2.2.2 Printing range
1) Plain paper and special media
The shaded portion in the diagram below shows the printable area and
recommended printing area for paper and special media.
L
R
Printable Area
T
Minimum
L
R
T
B
3.4 mm
3.4 mm
3.0 mm
7.0 mm
0.13"*1
0.13"*1
0.12"
0.27"
Recommended Printing Area
Feed direction
B
Minimum
3.4 mm
L
R 3.4 mm
T 12.7 mm
B 15.5 mm
0.13"*1
0.13"*1
0.5"*2
0.61"
*1: LTR size: Land Rare 6.4 mm (0.25") minimum.
*2: When using Fine mode photo printing:
T is 25.4 mm (1.0") minimum.
Figure 2-6 Printing Area
2) Envelope
The shaded portion in the diagram below shows the printable area and
recommended printing area for U.S. Commercial 10 envelopes (9.5 ✕ 4.1 inches) and
European DL-size envelopes (229 ✕ 110 mm).
L
Minimum
R
L 6.4 mm 0.25"
R 10.4 mm 0.41"*1
T 3.0 mm 0.12"
B 7.0 mm 0.28"
T
Feed direction
B
Recommended Printing Area
Minimum
L 6.4 mm 0.25"
R 10.4 mm 0.41"*1
T 12.7 mm 0.5"*2
B 15.5 mm 0.61"
*1: For Commercial number 10 envelopes, 31.4mm (1.2").
*2: When using Fine mode photo printing:
T is 25.4 mm (1.0") minimum.
Figure 2-7 Printing Area (Envelope)
3) Banner paper
The shaded portion in the diagram below shows the printable area and
recommended printing area.
T
B
Feed direction
R
1
2
3
4
5
L
Printable Area
Minimum
L 3.4
R 3.4
T 3.0
B 40.0
mm
mm
mm
mm
0.13"
0.13"
0.12"
1.57"*
Recommended Printing Area
Minimum
L 3.4 mm 0.13"
R 3.4 mm 0.13"
T 18.5 mm 0.73"
B 40.0 mm 1.57" *
*: When printing 6 pages.
Figure 2-8 Printing Area (Banner Paper)
2-8
6
Part 2: Product Specifications
BJC-1000
2.3 Interface Specifications
The parallel interface sends 8 bits (one byte) of data at a time and is transistortransistor-logic (TTL) compatible.
The interface cable must be made of American Wire Gauge (AWG) No. 28 or larger. The
maximum length of the twisted-pair shielded cable must be 2.0 m (approximately 6.6
feet).
1) Interface Type
IEEE1284 compatible parallel interface
2) Data transfer
8-bit parallel interface
3) Signal voltage levels
Low: 0.0 V to +0.8 V
High: +2.4 V to +5.0 V
4) Input/ output
Each signal pulled up with +5V.
5) Interface cable
Type: Twisted-pair shielded cable
Material: AWG#28 or larger
Length: Up to 2.0 m (6.6 feet)
6) Interface connectors
On printer: Amphenol 57-40360 (or equivalent)
On cable: Amphenol 57-30360 (or equivalent)
7) Input/ output signals and pin layout
Compatible mode
No.
Signal
I/O
No.
Signal
I/O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
STROBE
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
ACKNLG
BUSY
P.E.
SELECT
AUTO FEED XT*4
N.C.*2
INIT-RET*1
GND
+5.0V*3
IN
IN
IN
IN
IN
IN
IN
IN
IN
OUT
OUT
OUT
OUT
IN
...
...
...
...
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
STROBE-RET*1
DATA1-RET
DATA2-RET
DATA3-RET
DATA4-RET
DATA5-RET
DATA6-RET
DATA7-RET
DATA8-RET
ACKNLG-RET
BUSY-RET
P.E.-RET
INIT
ERROR
GND
N.C.*2
+5.0V*4
SELECT IN*5
...
...
...
...
...
...
...
...
...
...
...
...
IN
OUT
...
...
...
IN
*1:
*2:
*3:
*4:
*5:
All-RETs are connected to GND.
N.C. means no connection.
The level is connected with +5.0V through 390Ω resistor.
The level is connected with +5.0V through 3.3kΩ resistor.
These signals are effective only in LQ printer control mode.
2-9
Part 2: Product Specifications
BJC-1000
Nibble mode
No.
Signal
1
HostClk
2
DATA1
3
DATA2
4
DATA3
5
DATA4
6
DATA5
7
DATA6
8
DATA7
9
DATA8
10
Ptr Clk
11
Ptr Busy
12
Ack Data Req
13
Xflag
14
Host Busy
15
Not Defined
16
INIT -RET *1
17
F.G.
18
Vcc
*1: All-RETs are connected to
I/O
No.
Signal
I/O
IN
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
OUT
OUT
OUT
OUT
IN
...
...
...
...
GND.
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Signal Gnd
Signal Gnd
Signal Gnd
Signal Gnd
Signal Gnd
Signal Gnd
Signal Gnd
Signal Gnd
Signal Gnd
Signal Gnd
Signal Gnd
Signal Gnd
INIT
DataAvail
Not Defined
Not Defined
Not Defined
1284 Active
...
...
...
...
...
...
...
...
...
...
...
...
IN
OUT
...
...
...
IN
8) Input/ output signals:
Compatible Mode
STROBE [Input]
This signal is used to read DATA1 to DATA8. The signal becomes valid after BUSY
signal goes Low and the printer outputs an ACKNLG signal. The host computer
does not send the next signal until it receives ACKNLG signal. It is normally High;
after it goes Low, the printer receives data. When the signal remains Low, the
printer does not operate until it goes High.
DATA1 to 8 [Input]
The printer receives data with the STROBE signal. The state of each bit of the
signal must be maintained for at least 0.5 µs from the rising edge of the STROBE
signal.
ACKNLG [Output]
This signal is a response signal to the STROBE signal. The host computer does not
send the next STROBE signal until this signal is sent. When the power is turned on
or the BUSY signal goes Low for the input of the INIT signal, this signal is sent
regardless of the STROBE signal.
BUSY [Output]
When this signal is High, the printer is BUSY; when Low, the printer is READY. The
signal goes High when data is received, when the printer is offline, or when an error
occurs (paper-out, paper jam).
P.E. [Output]
When the printer cannot feed paper, this signal goes High. Then BUSY signal goes
High and the SELECT and FAULT signals go Low. The signal goes Low when the
paper is set and the printer goes online. FAULT and SELECT signals then go High
from Low. If paper is not ejected (paper jam) by executing paper eject command,
this signal and BUSY signal go High, and SELECT and FAULT go Low. In this case,
the signals do not change even if the paper is ejected.
2-10
Part 2: Product Specifications
BJC-1000
SELECT [Output]
The printer is selected when this signal is High. The printer is deselected when this
signal is Low. This signal goes Low when the printer is offline or when an error
occurs (paper-out, paper jam, head error, etc.).
AUTO FEED XT [Input]
Not used.
INIT [Input]
INIT from the system resets the printer to its initial power-on state. In BJ mode, the
BUSY signal goes High, and any received data is printed. In LQ mode, the BUSY
signal goes High, and the print buffer is cleared. When INIT signal goes Low, it
resets the printer to the power-on default state.
FAULT [Output]
This signal goes Low when the printer is in an error state (paper-out, paper jam, etc.).
SELECT IN [Input]
Not used.
Nibble Mode
Host Clk [Input]
The STROBE signal is to read DATA 1 to DATA 8.
Negotiation phase:
Trigger signal to send the protocol confirmation to the printer.
DATA 1-8 [Input]
The printer receives data with the Host Clk signal.
The state of each bit of this signal must be maintained for at least 0.5 µs from the
rising edge of the Host Clk signal.
Ptr Clk [Output]
Reverse data transmission phase:
The printer requests the host computer to read the data by making the Ptr Clk
signal Low. After finishing reading, the host computer notifies peripheral equipment
of completion of data receiving by making the Host Busy signal High.
Ptr Busy [Output]
Reverse data transmission phase:
Indicates bit 3 and bit 7 of the transmission data.
Ack Data Req [Output]
• Reverse data transmission phase:
Indicates bit 2 and bit 6 of the transmission data.
• Negotiation phase:
Trigger signal to inform the host computer of the printer’s is condition (Whether it
supports nibble mode or not, whether there is reverse transmission data or not).
Xflag [Output]
• Reverse data transmission phase:
Indicates bit 1 and bit 5 of the transmission data.
• Negotiation phase:
Informs the host computer whether printer supports nibble mode or not,
synchronizing with the falling edge of the Ack data Req signal. “Low” means that it
supports nibble mode.
2-11
Part 2: Product Specifications
BJC-1000
Host Busy [Input]
• Reverse data transmission phase:
Indicates that the host computer is ready to receive the data from the printer by
making the Host Busy signal Low. After that, it goes High in synchronizing with
Low pulse of Ptr Clk signal to verify receiving data.
• Reverse idle phase:
The Host Busy signal goes High in response to the Low pulse of the Ptr Clk signal,
and enters the reverse data transmission phase again.
lNIT [Input]
When this signal becomes Low, the printer’s state becomes BUSY. When the signal
changes from Low to High, it resets the printer control system to the initial state.
This signal is normally High and the pulse width must be at least 0.5 µs at the
printer side.
After initializing, the printer enters the compatible mode.
DataAvail [Output]
• Reverse data transmission phase:
Indicates bit 0 and bit 4 of the transmission data.
• Negotiation phase:
Informs the host computer if there is reverse transmission data or not in
synchronizing with the falling edge of the Ack Data Req signal. “L” means that
there is reverse transmission data.
1284 Active [Input]
This signal confirms that the printer is a 1284 compatible device when 1284 Active
signal goes High and Host Busy signal goes Low. It goes Low with the termination
phase.
2-12
Part 2: Product Specifications
BJC-1000
9) Timing
0.5ms 1.0ms 0.5ms
Min. Min. Min.
DATA 1 to 8
STROBE
BUSY
ACKNLG
Approx. 4ms
Figure 2-9 Timing Chart (Compatible Mode)
1284 Active
Ack Data Req
Data (1 to 8)
Bit2
0000 0000
Bit6
Unknown
Host Busy
Host Clk
Ptr Clk
Ptr Busy
Data Avail
Printer Busy Status
Ptr → Host
Bit3
Bit7
Bit0
Bit4
Bit1
Bit5
With data
Xflag
Nibble mode
Support
TP
TP
Figure 2-10 Timing Chart (Nibble Mode)
2-13
TP
Part 2: Product Specifications
BJC-1000
This page intentionally left blank
2-14
Part 3
OPERATING
INSTRUCTIONS
Page
3- 1
3- 1
3- 2
3- 3
3- 6
3- 7
3- 7
3- 8
3 -10
3 -10
3 -11
3 -11
3 -13
1. PRINTER SETUP
1.1 Equipment Check
1.2 Printer Dimensions
1.3 Setup Procedure
1.4 Turning the Printer On/Off
1.5 Paper Settings
1.6 Banner Printing
1.7 Name of the Parts and Their Functions
2. PRINTER SERVICING FUNCTIONS
2.1 Error Indications
2.2 Cleaning the BJ Cartridge
2.3 Self-Test Printout
2.4 EEPROM Reset
Part 3: Operating Instructions
BJC-1000
1. PRINTER SETUP
1.1 Equipment Check
After unpacking the printer, make sure the items below are included:
Paper Support
Power Cord
Documentation
Read This First
BJ Cartridge
Packing
Packing
BJ Cartridge
Container
Tape
Packing
Box
Figure 3-1 Packaging
3-1
Part 3: Operating Instructions
BJC-1000
1.2 Printer Dimensions
The printer’s dimensions are shown below. Allow enough space for the printer to be
used with ease.
For banner printing leave a space about the size of two A4-size papers in front of the
printer. Also allow enough space at the back of the printer to set the banner paper.
240 mm
160 mm
360 mm
174 mm
Figure 3-2 Printer Dimensions
NOTE
· Do not place the printer in excessive heat or humidity.
· Operate the printer under the following conditions:
Ambient temperature: 5°C to 35°C
Relative humidity:
10% to 90% (no condensation)
· Do not place the printer in direct sunlight.
· Do not place the printer near a device containing a magnet or generating
a magnetic field.
· Place the printer on a level and stable surface.
· Do not place the printer in areas subject to vibration.
· Keep the printer clean.
· When moving the printer, hold both ends.
3-2
Part 3: Operating Instructions
BJC-1000
1.3 Setup Procedure
Set up the printer as follows.
1.3.1 Connecting the interface cable
1) Make sure that the printer's power cord is disconnected and the computer's power
is turned off.
2) Connect one end of the parallel interface cable to the parallel interface connector
on the back of the printer.
After connecting the cable, fasten the locking arms to secure it.
3) Connect the other end of the interface cable to the parallel interface connector on
the computer.
1
2
Figure 3-3 Connecting the Interface Cable
1.3.2 Turning on the printer
The printer turns on when the AC plug is plugged in.
Before turning on the printer, first turn on the computer and any other peripheral
equipment. When turned on, the printer executes initializing operations. Finally, the
carriage stops at the cartridge replacement position.
3-3
Part 3: Operating Instructions
BJC-1000
1.3.3 Installing the cartridge
Three types of cartridges can be installed in the printer: two color BJ cartridges and
Black BJ cartridge.
1) Removing the BJ cartridge protectors
Take out the BJ cartridge from the package, then remove the cap protecting the
nozzles and gently peel off the protective tape as shown in the figure.
1
2
3
Figure 3-4 Removing the BJ Cartridge Protectors
CAUTION
Do not unpack the BJ cartridge until it is ready to be used.
Do not reuse the cap and tape, as doing so can clog the nozzles or mix the
ink colors.
Do not touch the nozzles when removing the tape. Scratching the head
face and ink contamination may result in poor printing.
Never touch or wipe the nozzles with tissue paper, etc. to prevent them
from clogging.
To prevent foreign matter or dried ink from clogging the nozzles, install the
BJ cartridge immediately in the printer or in the cartridge container after
removing the cap and peeling off the tape.
Clogged nozzles can cause white streaks across printed area. If this
problem persists even after the ink cartridge is cleaned by the printer,
replace the BJ cartridge.
Do not shake the BJ cartridge after removing the cap and tape, as ink may
leak from the cartridge.
BJ cartridges cannot be disassembled, reassembled, or washed.
Figure 3-5 BJ Cartridge Handling Precautions
3-4
Part 3: Operating Instructions
BJC-1000
2) Installing the cartridge
Open the printer’s front cover and flip up the cartridge lock lever. Attach the BJ
cartridge to the carriage and push down the cartridge lock lever to lock the BJ
cartridge in place.
2
1
3
Figure 3-6 Cartridge Installation
CAUTION
There are four types of BJ cartridges that can be installed in the printer:
BC-01, BC-02, BC-05 and BC-06 photo. To ensure optimum printer
performance, use the BC-02, BC-05 or BC-06 photo. It is not
recommended to use the BC-01 as they may cause poor print quality.
Using the BC-01 will not damage the printer or the cartridge.
1.3.4 BJ cartridge container
A BJ cartridge container for storing the BJ cartridge is packed with the printer.
Always store an unused BJ cartridge in the BJ cartridge container. The box can store
one BJ cartridge only.
Storing the BJ Cartridge
Close
Open
Push
Figure 3-7 BJ Cartridge Container
3-5
Part 3: Operating Instructions
BJC-1000
1.4 Turning the Printer On/Off
1.4.1 Turning the printer on
Connect the power cord to a power source to turn on the printer, and initializing
operations are executed.
1.4.2 Turning the printer off
Unplug the power cord from the power source to turn off the printer. When
unplugging the power cord, wait at least one minute after completing an operation
such as printing, feeding paper, cleaning the print head, etc.
CAUTION
Never unplug the power cord less than one minute after completing an
operation. Otherwise, the BJ cartridge will not be capped. In such case,
ink may leak or dry out in the nozzle.
Figure 3-8 Never unplug the power cord less than one minute after completing an operation
3-6
Part 3: Operating Instructions
BJC-1000
1.5 Paper Settings
For optimum printing, the printer has various paper settings to suit various types of
paper. Set the thickness lever before loading the paper.
TABLE 3-1 QUICK REFERENCE FOR SETTING
Media
Plain paper
Bubble jet paper
Envelopes
Transparencies
Back Print Film
Glossy Photo paper
High gloss film
High resolution paper
T-shirt transfers
Fabric Sheet
Banner paper
Thickness Lever
Left
Left
Right
Left
Left
Left
Left
Left
Left
Right
Left
Flap Position
Flat
Flat
Flat
Flat
Flat
Upright
Flat
Upright
Flat
Flat
Upright
Max. stacking height
5 mm (LGL:pages)
5 mm
5
20 pages
10 pages
1 page
1 page
5 mm
1 page
1 page
1 page
1.6 Banner Printing
When printing on banner paper, set the paper support and set the paper delivery flap to
the upright position. To avoid misfeeding, put a light crease between the first and
second page and set the first page in the sheet feeder. Place the rest of the banner
paper behind the printer. Each top margin for banner printing is set at 0mm.
However, to avoid printing on the platen, printing will start 3mm from the initial top
margin. Set an extra sheet at the end in case the bottom edge is not printed on the last
page.
Banner printing uses a large amount of ink. To avoid ink shortage, use of a new ink
cartridge when printing banners is recommended.
Banner Paper
Figure 3-9 Banner Printing
3-7
Part 3: Operating Instructions
BJC-1000
1.7 Name of the Parts and Their Functions
The different parts of the printer and their functions are shown below.
Paper Support
Supports the stack of paper loaded in the
cut sheet feeder.
Cut Sheet Feeder
Holds a stack of approximately 50 cut
sheets (64g/m2) for automatic feeding.
Paper Guide
Aligns the cut sheets in the cut sheet feeder
according to the paper size.
Front Cover
Open to install or remove the cartridge, set the
paper thickness lever, or remove jammed paper.
RESUME button
This key has the following functions:
-If you press and hold it for two seconds or more,
the printer will reset and perform cleaning
operation.
-To recover an error, press once and release.
-To start the nozzle check pattern, double click.
AC Adapter
Installed on the rear of the
printer, the AC adapter
supplies power from the power
outlet to the printer.
Figure 3-10 Name of the Parts and Their Functions (1)
3-8
Part 3: Operating Instructions
BJC-1000
Paper thickness lever
Adjusts the gap between the
print head and the paper. Set
this lever according to the
type of print media that you are
using.
Figure 3-11 Name of the Parts and Their Functions (2)
Paper thickness lever
Adjusts the gap between the print head and paper according to the thickness of the
paper. There are two settings: left for plain paper, high resolution paper,
transparencies, back print film, glossy paper and high glossy film; and right for thick
paper, envelopes, and banner paper.
Left
Right
Figure 3-12 Paper Thickness Lever
3-9
Part 3: Operating Instructions
BJC-1000
2. PRINTER SERVICING FUNCTIONS
2.1 Error Indications
Errors will be displayed on the host computer monitor. (The host computer should be
set to ECP or Nibble mode and use the BJ status monitor on Windows95/98.) Main
error sentences are shown in the table below:
TABLE 3-2 ERROR INDICATIONS
Error condition
Error indication
[Recoverable by customers]
Paper feed
The printer is out of paper.
Paper jam
A paper jam has occurred.
[Unrecoverable by customers]
Home position error
An error that possibly requires
occurred.
Carriage control error
An error that possibly requires
occurred.
Printer temperature sensor error An error that possibly requires
occurred.
No cartridge error
An error that possibly requires
occurred.
Waste ink full error
The used ink tank is full.
Purging operation error
An error that possibly requires
occurred.
Error
code
···
···
a service call has
a service call has
a service call has
a service call has
5000
5100
5400
5600
···
a service call has
5C00
The errors listed in Table 3-2 are described below.
· Recoverable errors by customers (Correctable by removing the paper and pressing
and holding down the RESUME button for over two seconds.).
1) Paper pick-up error
Occurs when the paper cannot be fed properly.
2) Paper jam
Occurs when the printed paper cannot be ejected.
· Unrecoverable errors by customers (Pull out the AC plug to turn off the power.)
3) Home Position Error
Displayed when the home position can not be detected.
4) Carriage control error
Occurs when the print position can not be corrected.
5) Printer temperature sensor error
Occurs when the temperature sensor's (TH1) reading on the control board is
irregular.
6) No cartridge error
Occurs when the printer does not detect the BJ cartridge other than during BJ
cartridge replacement.
7) Waste ink full error
Occurs when the “total waste ink amount” recorded by the EEPROM exceeds the
prescribed limit.
8) Purging operation error
Occurs when the purging operation detection at the capping position is irregular.
3-10
Part 3: Operating Instructions
BJC-1000
2.2 Cleaning the BJ Cartridge
Press and hold the RESUME button for two seconds or more. The cleaning time is
approximately 20 seconds.
After the cleaning, execute a test printout of the nozzle check pattern to check the print
quality. (Double click the RESUME button.)
The printer cleans the BJ cartridge automatically at the following times:
1)When the printer is turned on for the first time. (When the AC plug is plugged in.)
2)After the BJ cartridge is replaced.
3)After the printer has been on for 72 hours following the last cartridge cleaning with a
black BJ cartridge installed.
4)After printing a prescribed number of dots.
2.3 Self-Test Printout
This printer has built-in self-test functions which can be executed without any
connection to a computer. There are two print modes available in self-test prints: the
nozzle check pattern and the service test print.
NOTE
All self-test prints require Letter or A4-size paper. Using smaller sized
paper for a self-test print will result in parts of the printout being printed
directly on the platen.
2.3.1 Nozzle check pattern
Double click the RESUME button while the AC plug is plugged in. After printing one
page of the nozzle check pattern, the printer stops the test.
On the nozzle check pattern, a pattern using all nozzles, and the control ROM version
are printed. In the event that print defects appear, perform a cleaning operation of
the head. If print quality does not improve even after the cartridge is cleaned five
times, replace the BJ cartridge.
Black BJ Cartridge
Printed with the first nozzle.
Ver X.XX
Printed with the 64th nozzle.
Version Number of Control ROM
Color BJ Cartridge
Printed with the first nozzle.
Yellow 16 nozzles
Magenta 16 nozzles
Cyan
16 nozzles
Ver X.XX
Printed with the 16th nozzle.
Version Number of Control ROM
Figure 3-13 Nozzle Check Pattern
3-11
Part 3: Operating Instructions
BJC-1000
2.3.2 Service test print
On the service test print, the control ROM version, and EEPROM (IC8) data are
printed, as shown below.
Total Number of Pages Passed When Using Cartridge
ROM Ver X.XX
BC-02
LostInk XX.X% PageCount->
BK XXXXX
CL XXXXX
LD XXXXX
Photo
Color
Black
Total Waste Ink Amount (absorption ratio of the waste ink absorber: %)
Version Number of Control ROM
Figure 3-14 Service Test Print
The service test print is produced in the following procedure:
1. Without a cartridge installed, connect the plug of the AC adapter to the AC outlet
while holding down the RESUME button.
2. Release the RESUME button. Press it down again within five seconds and release it.
The carriage moves to the center, and stops.
3. Open the front cover and install the black BJ cartridge.
4. Close the front cover and press the RESUME button twice. The printer starts the
service test printing.
3-12
Part 3: Operating Instructions
BJC-1000
2.4 EEPROM Reset
The EEPROM records various settings, the data on the total number of sheets printed,
and the total waste ink absorption amount for the color and black ink cartridges
respectively. The total number of sheets printed and the total waste ink absorption
amount can serve as a reference for how much the printer has been used.
The EEPROM must be reset when the logic board or the bottom cover is replaced.
See Part 5: 3.3 Logic Board and Bottom Cover Replacement Cautions (page 5-4), for details.
2.4.1 EEPROM Reset
"Waste ink full" is detected with the total waste ink absorption amount recorded in the
EEPROM. When the ink absorber is replaced, the data on the total waste ink
absorption amount in the EEPROM must be reset. Furthermore, when the logic
board is replaced, the new logic board's EEPROM must be reset and the waste ink
absorber must be also replaced at the same time. To reset the EEPROM, follow the
procedure below.
1. Without the cartridge installed, connect the plug of the AC adapter to the AC outlet
while holding down the RESUME button.
2. Release the RESUME button. Press it down again within five seconds and release it.
3. Hold down the RESUME button for two seconds or more and release it.
4. Set EEPROM by pressing the RESUME button as shown in the table below.
TABLE 3-3 DEFAULT SETTING WHEN RESETTING THE EEPROM
Operation
Contents of setting
Hold down for two seconds or more. EEPROM reset & destination setting (Other than Japan)
Press once.
Destination setting (Japan)*
Press twice. (Second time:
Destination setting (Others)*
within one sec. of first time)
(* reference: Will not reset EEPROM)
5. To check this procedure, power off the printer first, then, after turning the printer
on again, make a service test print. See 2.3.2 Service test print (page 3-12).
CAUTION
Be careful when performing the above operation as the EEPROM data
cannot be recovered once it is reset.
2.4.2 Printing the EEPROM data
The following data recorded in the EEPROM can be printed on the service test print.
See 2.3.2 Service test print (page 3-12).
1) Total number of sheets for black, color and photo ink cartridges, respectively.
2) Total waste ink absorption amount.
CAUTION
Resetting the EEPROM will permanently erase all data contained.
3-13
Part 3: Operating Instructions
This page intentionally left blank
3-14
Part 4
TECHNICAL
REFERENCE
Page
4- 1
4- 1
4- 2
4- 3
4- 5
4- 5
4- 6
4- 7
4- 8
4- 8
4 -10
4 -17
4 -19
4 -22
4 -24
4 -24
4 -25
4 -28
4 -28
4 -28
4 -28
4 -29
4 -29
1. OVERVIEW
1.1 Block Diagram
1.2 Printing Signal Flow
1.3 Print Drive
2. FIRMWARE
2.1 720 dpi Printing/Smoothing Feature
2.2 Printing Modes
2.3 Optimum Printing Direction Control
3. PRINTER MECHANICAL SYSTEM
3.1 Overview
3.2 BJ Cartridge
3.3 Purge Unit
3.4 Carriage
3.5 Paper Feed
4. PRINTER ELECTRICAL SYSTEM
4.1 Overview
4.2 Logic Section
5. SENSOR FUNCTIONS
5.1 Pick-Up Roller Sensor
5.2 Paper End Sensor
5.3 Home Position Sensor (Purge Sensor)
5.4 Temperature Sensor
5.5 Waste Ink Amount Detection
Part 4: Technical Reference
BJC-1000
1. OVERVIEW
1.1 Block Diagram
Paper Feed Motor
Carriage
· BJ Cartridge
· Home Position Sensor
Carriage Motor
Logic Board
J3
J1
J2
Paper Feed
Motor Driver
Carriage
Motor Driver
VH (+27.6VDC)
J5
J4
MPU & Printer Controller
Vcc (+5VDC)
Control ROM
Figure 4-1 Block Diagram
4-1
DRAM
EEPROM
I/F
Part 4: Technical Reference
BJC-1000
1.2 Printing Signal Flow
The print signal flow from when the printer receives the print data to when printing is
executed is described below.
a) The print data, which include control signals, are output from the host computer,
and are sent to the MPU & printer controller via an interface.
b) The print data sent to the MPU & printer controller are then separated into control
signals and bit image data. The control signals are processed into control
commands based on the data stored inside the control ROM, and bit-mapped image
data are organized inside the print buffer of the DRAM.
c) The image data organized inside the print buffer are then moved to the MPU &
printer controller, one line of each pass at a time.
d) The image data moved to the MPU & printer controller are then converted to serial
data, and are output to the BJ head as print signals. Inside the BJ head, the serial
data are then converted into one column of parallel print data, thus allowing
printing to be implemented.
e) While performing check of the information (data) inside the control ROM, control of
motor drivers, and detection of the BJ head and printer statuses, the MPU & printer
controller works to control the entire print drive control system.
Host
Computer
DRAM
a
b
c
d
MPU &
Printer Controller
Print Buffer
Logic Board
c
Control ROM
BJ Head
e
e
e
: Print signal
: Control signal
Figure 4-2 Printing Signal Flow
4-2
Motor Drivers
Sensors
Part 4: Technical Reference
BJC-1000
1.3 Print Drive
To eject ink from the head for printing, the printer controller generates control signals
to the BJ head.
The control signals consist of the drive control signal for ejecting ink from the head's
nozzles and the temperature control signal for adjusting the head’s temperature so that
the amount of ink ejected is uniform.
To achieve optimum printing, both these control signals are optimized by the printer
controller and sent to the BJ head through the carriage ribbon cable.
The drive frequency varies depending on the printing mode and BJ cartridge type.
1.3.1 Printing drive control
a) Black BJ cartridge drive control
The driving control of 64 nozzles in the black BJ cartridge is executed by the matrix
structure of 8 COM signals and 8 SEG signals. The COM signal connects the COM1
to COM8 circuits to the head drive power supply (VH) in order that the 64 nozzles
are ready to print in units of eight nozzles. While the COM signal is connected to the
head drive power supply, the SEG signal connects the SEG circuits (SEG1 to SEG8)
for the even- and odd-numbered nozzles to the ground, and applies the heater
voltage to the heater plate. The load on the AC adapter is reduced and ink charging
delay is prevented by driving the head in steps.
The SEG signal has two pulses, pre-pulse and main pulse. The pre-pulse does not
eject ink, but increases the head temperature to the appropriate value, and the main
pulse ejects ink. The printer controls each pulse width to obtain the optimum print
density according to the print speed and temperature.
COM 1
COM 2
COM 3 *
COM 4
COM 5
COM 6 *
COM 7
COM 8
b) Color BJ cartridge drive control
With exception of the following points, the head drive control of the color BJ
cartridge is the same as that of the black BJ cartridge.
The nozzle configuration of color BJ cartridge is different from that of black BJ
cartridge, and the COM 1 and 2 signals are used for driving the nozzle heaters for C,
COM 4 and 5 signals for M and COM 6 and 7 for Y.
The color BJ cartridge has 16 nozzles each for Y, M, and C, whereas the black BJ
cartridge has 64 nozzles for black only.
1
9
17
25
33
41
49
57
SEG 1
2
10
18
26
34
42
50
58
SEG 2
3
11
19
27
35
43
51
59
SEG 3
4
12
20
28
36
44
52
60
SEG 4
5
13
21
29
37
45
53
61
SEG 5
6
14
22
30
38
46
54
62
SEG 6
7
15
23
31
39
47
55
63
SEG 7
8
16
24
32
40
48
56
64
SEG 8
Nozzle 64
Nozzle 1
* Nozzles not used in color BJ cartridge
Mechanical Nozzle Arrangement
Electrical Nozzle Arrangement
Figure 4-3 Nozzle Arrangement
4-3
Part 4: Technical Reference
BJC-1000
T
COM 1
COM 2
COM 3
•
•
•
•
COM 8
SEG odd *
SEG even *
for
nozzles
9 to 16
for
nozzles
17 to 24
•
•
•
•
for
nozzles
1 to 8
for
nozzles
57 to 64
* Simultaneously driven in the HS mode
Pulse width
is variable.
"T" values are shown in the table below. Heater drive frequencies are in parentheses.
Black BJ cartridge
112 µs ( 8.93kHz)
Color BJ cartridge
112 µs ( 8.93kHz)
HQ
136 µs ( 7.35kHz)
720dpi/Smoothing 96 µs ( 10.4kHz)
136 µs ( 7.35kHz)
HS
Photo
Photo BJ cartridge
88 µs ( 11.4kHz)
Figure 4-4 Printing Signals
4-4
Part 4: Technical Reference
BJC-1000
2. FIRMWARE
2.1 720 dpi Printing/Smoothing Feature
This features operates only with the black BJ cartridge.
2.1.1 Canon extension mode
In the Canon Extended mode, the printer driver creates 720 dpi data for the
horizontal direction and sends it to the printer, resulting in high-quality printing.
The printer driver smoothes the printed character’s edges at 720 dpi along the
horizontal direction. The 720 dpi data for the horizontal direction is sent to the
printer and the edges are smoothed at a high resolution.
BJ
1/720 inch
Add Dots
Delete Dot
1/360 inch
1/360 inch
Figure 4-5 720 dpi Printing/Smoothing Feature
4-5
Part 4: Technical Reference
BJC-1000
2.2 Printing Modes
2.2.1 Printing mode
Depending on the cartridge installed, the media, the printing mode, the resolution, the
printing data, etc., the printer varies the carriage movement, bubble jet head driving
frequency, etc., to attain high-quality printing without any bleeding or shifting in the
printout.
The smoothing function is available only when using the black BJ cartridge. When
the 720 dpi printing/smoothing feature is used, the carriage feed pitch is set to 1/720
inch. Although this slows down the carriage speed, the bubble jet head’s driving
frequency (heat frequency) is increased so that the overall printing throughput
decreases little.
When monochrome printing is conducted using the color BJ cartridge, composite
black is used as the color. Composite black is made from three colors of Y, M and C,
and it is printed in 66.7% duty of each color, total approximately 200% duty. The
boundary line is printed with 100% duty of each color, total 300% duty. This makes
the black color look darker.
With the photo BJ cartridge installed, this printer prints pixels by dividing the pixel
data into a maximum of 4-values (no printed, print 1 dot, print 2 dots, print 3 dots).
This method enables the printer to achieve high degree gradation printing. When
printing with 2 dots, the second dot is printed in the 720 dpi position. When printing
with 3 dots, the second dot is printed in the 720 dpi position while the third dot is
printed on top of the first dot. When monochrome printing using the photo BJ
cartridge, printing is conducted at a maximum total (C/Y/M) of 400% duty, but the
boundary lines are not emphasized.
The printing method for the respective printing modes are listed below.
TABLE 4-1 PRINTING MODES AND HEATING METHODS
With a Black BJ Cartridge
Printing Mode
Fine
HQ (Smoothing OFF)
HQ (Smoothing ON)
HS
Carriage
Movement
4 passes
1 pass
1 pass
1 pass
Number of Nozzles
16
64
64
64
nozzles
nozzles
nozzles
nozzles
Heat Frequency [*]
7.35KHz [7.35KHz]
7.35KHz [7.35KHz]
10.42KHz [5.21KHz]
8.93KHz [8.93KHz]
With a Color BJ Cartridge
Printing Mode
Fine
HQ
HS
Carriage
Movement
2 passes
1 pass
1 pass
Number of Nozzles
Heat Frequency [*]
8 nozzles
16 nozzles
16 nozzles
7.35KHz [7.35KHz]
7.35KHz [7.35KHz]
8.93KHz [8.93KHz]
Number of Nozzles
Heat Frequency [*]
8 nozzles
11.4KHz [5.7KHz]
With a Photo BJ Cartridge
Printing Mode
Photo
Carriage
Movement
2 passes
* [ ]: Carriage speed
4-6
Part 4: Technical Reference
BJC-1000
2.3 Optimum Printing Direction Control
To prevent vertical misalignment of the printed characters, etc., when print data is
printed continuously in the direction of the paper feeding direction, printing is executed
with the carriage moving in only one direction.
However, when printing in the paper feeding direction is not continuous, since vertical
misalignment is not so noticeable, the printing direction is alternated so that printing is
also executed from the opposite carriage direction. This improves the throughput.
If four or more successive null rasters are detected in the lower (in the direction of
paper ejection) 24 nozzles for the printing data in the printer buffer during single-pass
printing, printing is executed up to the null raster. From the null raster onward,
printing is executed from the opposite carriage direction. From the next raster onward,
printing is executed from the same carriage direction until the direction changes again.
4-7
Part 4: Technical Reference
BJC-1000
3. PRINTER MECHANICAL SYSTEM
3.1 Overview
This section explains the printer’s mechanical components.
Carriage Unit
Cut Sheet Feeder
Paper Feed Part
BJ Cartridge
Purge Unit
Figure 4-6 Printer's Mechanical Configuration
3.1.1 Mechanical components
1) BJ cartridge
The printer can use three types of BJ cartridges: black, color, and photo. The user
installs the black, color, or photo BJ cartridge according to the required application.
All these cartridges are ink-disposable.
2) Purge unit
Driven by the carriage motor, the purge unit helps to maintain high-quality printing
by capping and wiping the BJ cartridge’s bubble jet face. It ensures that the ink in
the nozzles is ejected easily.
When the printer is not in use, the purge unit caps the BJ cartridge’s nozzles for
protection.
3) Carriage unit
Driven by the carriage motor, the carriage moves horizontally across the paper.
Through the carriage ribbon cable, the printing signals from the logic board are
transmitted to the BJ cartridge in the carriage.
By controlling the purge unit's slide lock pin, the carriage controls the engagement
of the paper feed motor’s drive power between the paper feed/purge unit and the
sheet feeder.
4-8
Part 4: Technical Reference
BJC-1000
4) Paper feed mechanism and sheet feeder
The built-in sheet feeder is driven by the paper feed motor. Plain paper as well as
coated paper, transparencies, back print film, envelopes, etc., can be loaded and fed
automatically into the paper feed mechanism.
Driven by the paper feed motor, the paper feed mechanism rotates the feed rollers to
feed the paper vertically.
When printing transparencies and back print film, remove each sheet immediately
after it is printed. This is to allow enough time for the ink to dry.
The paper ejection operation of this printer is performed using the RESUME button.
4-9
Part 4: Technical Reference
BJC-1000
3.2 BJ Cartridge
3.2.1 Black BJ cartridge structure
The black BJ cartridge has a printing head equipped with 64 nozzles. The printing
head and ink cartridge are built-in.
1) Side cover
This plastic cover is fixed to the cartridge body to prevent ink leaking from the ink
sponge.
2) Ink sponge
This sponge is soaked with black ink. It is compressed and stored in the cartridge
body.
3) Cartridge body
This is a plastic case which links the ink sponge with the bubble jet head unit via
the ink filter.
4) Air Hole with Pressure Regulation Cap
As the ink is consumed, the pressure inside the cartridge decreases compared to the
atmospheric pressure. This makes it more difficult for the ink to be supplied to the
head. To prevent this, the ink cartridge has an air intake for maintaining a constant
pressure inside the cartridge body.
5) Bubble jet head unit
As dictated by the printing signals received through the signal contact, ink is ejected
through the 64 bubble jet nozzles.
6) Head cover
The plastic head cover protects the bubble jet head unit.
Side Cover
Ink Sponge
Cartridge Body
Label
Air Hole with Pressure Regulation Cap
Bubble Jet Head Unit
Signal Contacts
Head Joint Hole
Joint Pipe with Meshed Ink Filter
64 Bubble Jet Nozzles
Faceplate
Figure 4-7 Black BJ Cartridge Structure
4-10
Head Cover
Part 4: Technical Reference
BJC-1000
3.2.2 Color/Photo BJ cartridge structure
The color/photo BJ cartridge has a printing head equipped with 64 nozzles through
which the three ink colors are ejected (16 nozzles each for yellow, magenta, and cyan).
The printing head and ink cartridge are built-in.
1) Side cover
This plastic cover is fixed to the cartridge body to prevent ink leaking from the ink
sponge.
2) Ink sponges
Each color ink (yellow, magenta, cyan) is soaked in its respective sponge. The
yellow, magenta, and cyan ink sponges are compressed and stored in the cartridge
body.
3) Cartridge body
This is a plastic case which links the ink sponge with the bubble jet head unit via
the ink filter.
4) Air Hole with Pressure Regulation Caps
As the ink is consumed, the pressure inside the cartridge decreases compared to the
atmospheric pressure. This makes it more difficult for the ink to be supplied to the
head. To prevent this, the ink cartridge has an air intake for maintaining a constant
pressure inside the cartridge body.
5) Bubble jet head unit
As dictated by the printing signals received through the signal contact, ink is ejected
through the 48 bubble jet nozzles.
6) Head cover
The plastic head cover protects the bubble jet head unit.
Side Cover
Ink Sponges
Cartridge Body
w
llo
Ye
Label
ta
n
ge
Air Hole with Pressure Regulation Caps
Ma
an
Cy
Bubble Jet Head Unit
Signal Contacts
Head Joint Hole
Joint Pipe with Meshed Ink Filter
64 Bubble Jet Nozzles
Faceplate
Head Cover
Figure 4-8 Color/Photo BJ Cartridge Structure
4-11
Part 4: Technical Reference
BJC-1000
3.2.3 Bubble head unit structure
1) Bubble jet nozzles
The ink in the sponge passes through a mesh-type ink filter and flows to the bubble
jet nozzles through the joint pipe.
When the head-driving current is supplied to the heater board, and multiple ink
bubbles form. Eventually, only one ink bubble is formed. The head-driving current
is turned off before the ink drop leaves the nozzle. The bubbling however continues
with the residual heat and the ink drops are ejected from the nozzles.
After an ink drop is ejected, the nozzle is filled with ink supplied from the ink
sponge.
NOTE
The print head’s heater board uses semiconductor technology with the
heater and circuitry built on a silicon plate.
This silicon plate, which contains various electrical circuitry, is attached to
an aluminum base. The plastic cover, which is shaped to fit the nozzles, is
also attached.
Signal Circuit
Print Board
Extra Fine Wire
Connecting Section
Protection Bond of Wire
Connecting Section
Silicon Plate
Aluminum Plate
Heater Plate
Bubble Jet Nozzle
Ink Path from Ink Sponge
1 Start of Heater Power
2 While Heater Power is on
Ink Filter
3 End of Heater Power
4 Bubble Contraction,
Ink Bubble Formation
5 Ink Drop Jetting
Joint Pipe
Plastic Cover
Common Ink Chamber
Face Plate (Part of Plastic Cover)
Figure 4-9 Bubble Jet Nozzles (Partial View)
4-12
Part 4: Technical Reference
BJC-1000
2) Nozzle arrangement
The bubble jet nozzles are arranged 1/360 inch apart in a vertical array.
The black BJ cartridge has 64 nozzles. On the color and photo BJ cartridge, the
first 16 nozzles are for yellow, the next 8 nozzles are unused, the second set of 16
nozzles are for magenta, then a space of 8 nozzles, and the third set of 16 nozzles
are for cyan.
Black BJ Cartridge
Color BJ Cartridge/Photo BJ Cartridge
Nozzle 64
Yellow Nozzles 16
Space of 8 Nozzles
Magenta Nozzles 16
Space of 8 Nozzles
Cyan Nozzles 16
Nozzle 1
Figure 4-10 Nozzle Arrangement
3) Signal connection point (contact pad)
24 23 20 19 18
21 22
4
3
1
Figure 4-11 Contact Pad
4-13
2
32
15
17 16
14
31
13
29
12
28
11
27
8
9 10
26
5
6
25
7
30
Part 4: Technical Reference
BJC-1000
4) Circuit diagram
COM1
COM2
COM8
SEG1
SEG2
SEG8
HRANK
HRANK
HRANK
HRANK
GND
ID2
ID1
TMPSEN1A
TMPSEN1C
(Not Used)
TMPSEN2A
TMPSEN2C
HEATER1
HGND1
HEATER2
HGND2
Figure 4-12 Bubble Jet Head Driver Block Diagram (Black BJ Cartridge)
COM1
COM2
COM4
COM5
COM7
COM8
SEG1
SEG2
SEG8
HRANK
HRANK
HRANK
HRANK
GND
ID1
ID2
HGND1
HEATER1
HGND2
HEATER2
Figure 4-13 Bubble Jet Head Driver Block Diagram (Color BJ Cartridge)
4-14
Part 4: Technical Reference
BJC-1000
COM1
COM2
COM4
COM5
COM7
COM8
SEG1
SEG2
SEG8
HRANK
HRANK
HRANK
HRANK
GND
ID1
ID2
HGND1
HEATER1
HGND2
HEATER2
Figure 4-14 Bubble Jet Head Driver Block Diagram (Photo BJ Cartridge)
5) Head rank ID
One of four head rank IDs is selected to correct production variations in the bubble
jet head units. The head rank ID is displayed by a PCB pattern of contact points of
the bubble jet head unit. (BJ Cartridge PIN No. 29, 30, 31, 32)
Heater Drive Voltage ID Circuit
ID Circuit Pattern
32
32
32
32
31
31
31
31
30
29
30
29
30
29
30
29
ID 1
ID 2
Figure 4-15 Head Rank ID
4-15
ID 3
ID 4
Part 4: Technical Reference
BJC-1000
6) Temperature control
The optimum temperature of the BJ cartridge ink for high quality printing is about
23°C (73.4°F). The bubble jet head unit has warm-up heaters on the silicon plate.
The black BJ cartridge, furthermore, has temperature sensors, but they are not
used.
The printer controls the temperature by varying the heat pulse width (pre/main
pulse width) of the SEG signal and turning the warm-up heaters on and off. The
ambient temperature is detected by the temperature sensor on the printer logic
board, not by the temperature sensors on the silicon plate. If it is 16°C (61°F) or
less, the bubble jet head unit nozzles are warmed by the warm-up heaters.
Nozzle Section
Warm-up Heaters
Temperature Sensors
(Not Used)
Figure 4-16 Head Temperature Controller
7) BJ cartridge detection feature
The presence or absence of the BJ cartridge is always monitored.
The contact between the terminal of the warm-up heater in the BJ cartridge and the
carriage is checked.
8) BJ cartridge recognition feature
Whether the cartridge is a black, color, or photo BJ cartridge, it is determined by
pins #11 and #15 on the J1 connector on the printer logic board.
Cartridge types can be distinguished with combinations of pins #11 and #15 as
shown in the table below.
Pin No.
11
15
Signal name
Black
High
Low
ID1
ID2
Cartridge type
Color
Low
High
Photo
High
High
9) Print density control
This printer controls the quantity of ink ejected so it prints at constant density. It
does this by predicting the change in the head temperature while printing and using
the predicted temperature.
The quantity of ink ejected from the nozzles is controlled to obtain the optimum
print density by controlling the heat pulse width (pre/main pulse width) every 50 ms
based on the following information: the ambient temperature sensed by the
temperature sensor on the logic board; the number of dots printed by the printer;
the head temperature predicted from the switch-on time of the warm-up heater; and
the head rank ID for correcting production variations of the bubble jet head unit (the
heater drive voltage is fixed at 27.6 V DC).
4-16
Part 4: Technical Reference
BJC-1000
3.3 Purge Unit
3.3.1 Purge unit functions
1) Capping function
The purge unit's cap is pressed against the face of the print head to prevent the ink
from drying out or leaking.
If print data is not received for 60 seconds or more during a printing operation, the
purge unit wipes the printing head face. If print data is still not received for another
60 seconds, the purge unit caps the printing head.
Other than during a printing operation, if print data is not received after a certain
period of time (varies between 5 to 20 seconds), the purge unit caps the print head.
2) Cleaning function
The cleaning operation includes the wiping of paper and ink residue that has
adhered to the printing head's face plate. It also sucks out ink from the printing
head to replenish the inside of the nozzles with fresh ink.
The amount of ink consumed by the cleaning operation is as follows.
Black BJ Cartridge installed : 0.12 g
Color BJ Cartridge or Photo BJ Cartridge installed : 0.21 g
To maintain high printing quality, the purge unit cleans the printing head at the
following times:
• After the AC power cord is connected.
• After the BJ cartridge is replaced.
• Before the printing operation is performed and it has been 72 hours since the last
time the head was cleaned.
• When the printed dot count exceeds the set value.
• When the RESUME button is pressed down for 2 seconds or more.
4-17
Part 4: Technical Reference
BJC-1000
3.3.2 Purge unit structure
1) Purge drive gear
The purge drive gear which is driven by the transmission gear activates the cam
controlling the pumping operation. The transmission gear is rotated by the paper
feed roller which is driven by the paper feed motor.
The cam's position is detected by the home position sensor via the sensor arm.
2) Wiper unit
When the carriage moves from left to right, the wiper retracts so that it does not
touch the head. However, when the carriage moves from right to left, the wiper
wipes off the ink from the BJ cartridge's face plate at the following times:
when the printer is turned on, once every 60 seconds (or after a set dot count is
reached) during printing, when the paper feed operation ends, when the pumping
operation ends, and when the cap is opened or closed.
3) Cap unit
The cap unit has a rubber cap. When the carriage moves to the home position, the
cap unit is pressed against the print head's face plate to cap it.
Also, since the cap is connected to a pump, the cap sucks ink out of the BJ cartridge
during the pumping operation. The ink which has been sucked out is sent to the
bottom cover unit's waste ink absorber.
4) Maintenance jet absorber
The maintenance jet absorber at the home position absorbs the ink ejected from the
nozzles for a test to adjust the nozzles in the following cases: when the printer is
turned on, during printing, when wiping occurs during printing, when paper feeding
ends, when the pumping operation ends, and when the cap opens.
5) Slide lock pin
The slide lock pin moves the cap when the carriage moves from left to right and reaches
the capping position. Capping is thereby executed and the slide arm is unlocked.
When the slide arm is unlocked, the feed roller's rotation is transmitted to the purge
drive gear and sheet feeder.
Slide Lock Pin
Cap Unit
Purge Drive Gear
Wiper Unit
Maintenance Jet Absorber
Figure 4-17 Purge Unit
4-18
Part 4: Technical Reference
BJC-1000
3.4 Carriage
3.4.1 Carriage functions
1) Print head installation
The carriage holds the BJ cartridge mechanically with the carriage ribbon cable, and
is connected to the circuit on the logic board.
2) Carriage driver
Driven by the carriage motor and carriage belt, the carriage moves across the paper
horizontally.
3) Paper thickness adjustment
With the paper thickness lever at the top of the carriage, the gap between the paper
and printing head can be adjusted.
4) Paper feed motor driver
When the carriage moves to the cleaning position at the right end, the slide arm is
unlocked. The paper feed motor's drive power, normally used for paper feeding
during printing, can be diverted to drive the purge unit and sheet feeder.
Paper Thickness Select
Section
BJ Cartridge Mounting
Carriage
Guide Frame
Section
Cartridge Hook
Paper Thickness Lever
Carriage Ribbon Cable
Thickness Cam
Carriage Drive
Section
Home Position Sensor
(Photointeruptor)
Carriage Belt
Carriage Shaft
Locking Lever
Home Position Edge
Contact Point
Carriage Motor
Carriage
BJ Cartridge
Transmission
Section
Figure 4-18 Carriage
4-19
Part 4: Technical Reference
BJC-1000
3.4.2 Carriage structure
1) BJ cartridge mounting section
The cartridge holder moves with the locking lever which secures the BJ cartridge
onto the carriage.
When a BJ cartridge is secured onto the carriage, the ribbon cable's signal contacts
are pressed against the bubble jet head's signal contacts, enabling signals to be
transmitted from the logic board.
2) Carriage driver
The stepping-type carriage motor drives the carriage horizontally across the paper by
the carriage belt. After the photo interrupter type home position sensor behind the
carriage detects the home position edge as the initial position, the carriage is
controlled by the stepping pulse sent to the carriage motor.
The carriage motor is driven by a one to two-phase exciter at a fixed current.
Also, if a vertically-oriented line, etc., is printed from both carriage directions, it will
appear to be crooked or misaligned due to mechanical reasons. However, if the
vertically-oriented line is disjointed or not continuous, any misalignment will not be
that noticeable and printing is executed from both carriage directions. The slightlyoff timing of the detected home position edge is automatically corrected with the
software.
3) Paper thickness setting
When envelopes or thick paper are fed for printing, they will rub against the head
face causing possible damage and paper contamination. This can be prevented by
using the proper paper thickness setting.
The gap between the head and paper must be set to the optimum setting (one of two
settings) to match the thickness of paper being fed. This gap is adjusted by
changing the angle of the carriage guide frame and the carriage attachment angle.
The gap between the platen and head thereby changes.
Left
Envelope Position
Right
Plain Paper Position
Figure 4-19 Paper Thickness Adjustment
4-20
Part 4: Technical Reference
BJC-1000
4) Switching the paper feed motor drive transmission
The paper feed motor drives either the paper feed, purge unit, or cut sheet feeder
according to the position of the carriage. When the carriage is not at the right end,
the slide arm is locked by the purge unit's slide lock pin. In this condition, the
paper feed is driven by the feed roller. When the carriage is at the capping position,
the slide arm is unlocked and the paper feed motor drives the purge unit and sheet
feeder.
When the slide arm is unlocked and the feed roller rotates in the feeding direction,
the slide arm rotates until it reaches the cut sheet feeder gear to drive the gear.
When the slide arm is unlocked and the feed roller is rotated in the opposite direction of
the feeding direction, the slide arm rotates until it reaches the purge drive gear to drive
the gear.
Purge Unit
Feed Direction
Pump
Operation
Direction
Slide Arm
Locking Hole
Purge Drive Gear
Cut Sheet Feeder's Gear
Sheet Feed Position
Paper Feed Position
(Lock Position)
Purge Drive Position
Figure 4-20 Paper Feed Motor Drive Transmission
4-21
Part 4: Technical Reference
BJC-1000
3.5 Paper Feed
3.5.1 Outline of the paper feed
1) Paper feed mechanism
The paper feed mechanism supplies paper from the built-in cut-sheet feeder.
The built-in cut sheet feeder is driven by the paper feed motor. Paper stacked in the
sheet feeder is picked up and fed automatically. Even thick paper like envelopes can
be fed automatically without selecting the paper type mechanically with the paper
selection lever.
When the paper is sensed by the paper end sensor, it is fed automatically by the
paper feed roller until it reaches the starting position for printing on the platen.
During printing, the paper is fed by the rotation of the paper feed roller.
The paper, after printing, is delivered by the eject roller.
2) Paper feed operation
It is not possible to perform paper feed operations with the printer, however, paper
ejection can be performed with the RESUME button.
BJ Cartridge
Paper
Paper End
Sensor
Flag
Pick-up Roller Sensor
Pick-up Roller
Spur
Pressure Roller
Eject Roller
Transmission
Roller
Feed Roller
Figure 4-21 Paper Feed Mechanism
4-22
Part 4: Technical Reference
BJC-1000
3.5.2 Structure of the sheet feeder
This printer has no paper selection lever on the cut sheet feeder.
If the paper meets specifications, it can be fed without selecting the paper type. The
paper is loaded in the cut sheet feeder such that a corner of it is caught by the paper
separator. When printing starts, the pick-up roller starts to rotate through the drive
of the paper feed motor. Plain paper is fed with its corner held by the paper separator,
and then pushed into the paper feed section. When printing on thick paper like
envelopes, as the paper is stiffer than the return force of the paper separator's spring,
the paper separator is pressed down to feed the paper.
The initial position of the pick-up roller is detected when the flag is sensed by the
pick-up roller sensor on the logic board.
When paper is sensed by the paper end sensor for over a second, it is fed
automatically until it reaches the starting position for printing.
When the paper pick-up operation is executed, if no paper is sensed, it is executed again. If
the paper is still not sensed, it is assessed as a paper feed error.
Paper
Pick-Up Roller
Paper Separater
<Plain Paper Pick-Up.>
<Thick Paper Pick-Up.>
Figure 4-22 Paper Separator
4-23
Part 4: Technical Reference
BJC-1000
4. PRINTER ELECTRICAL SYSTEM
4.1 Overview
The electrical system functions are handled by the logic section or power supply.
The logic section converts the data from the interface into print signals or printer
operation signals and drives the BJ cartridge and motors while monitoring the status of
the sensors.
The power supply unit consists of a built in AC adapter which provides DC output to
the logic board, motors, and head etc. When DC input power from the AC adapter is
being supplied, all of the hardware components are active.
Carriage Ribbon Cable
J1
J2
RESUME button
MPU & Printer Controller
Carriage Motor
Control ROM
J4
J5
J3
Paper End Sensor
Pick-up Roller Sensor
DRAM
Carriage Motor Driver
Paper Feed Motor
Paper Feed Motor Driver
Figure 4-23 Printer Electrical System
4-24
Part 4: Technical Reference
BJC-1000
4.2 Logic Section
4.2.1 Logic section block diagram
16MHz
XO
XI
X1
X2
Address Bus A1 to A20
22.11
MHz
ControlROM
CE
DRAM
DRAM Bus
MA0-8
1-Mbit
MA0-8
A0-7
Reset Switch
MPU & Printer Controller
MD0-15
PA1
Printer Temperature
Sensor (TH1)
P50/AN0
8-Mbit
I/O1-16
MD0-15
EEPROM
P86, P93-95
1 Kbit
CR0-3(P60-63)
ISA(P42)
ISB(P73)
CHSMI(P70)
CRSTB(P83)
Driver IC
PM
Carriage Motor
LFA(P64), LFB(P65)
LFA(P66), LFB(P67)
Driver IC
PM
Paper Feed Motor
COM1 to 8
PES(P41)
Paper End Sensor PS1
RRS(P85)
Pick-Up Roller Sensor PS2
HPS(P40)
Home Position Sensor
SEG1 to 8
P34,
P51/AN1, P35,
P72
P53/AN3
P52/AN2
BJ Cartridge
ID 1
Black BJ Cartridge
heater
(64 nozzles)
HDO, HDI, HEAT
Color/Photo BJ Cartridge
heater
(Y, M, C each 16 nozzles)
ID2, HRANK
• Sub-heater
• Temperature control
heater
• Rank resistor
Figure 4-24 Logic Board Block Diagram
MECHANISM SECTION
Paper Feed Roller
Pick-Up
Roller
Sensor
Home Position Sensor BJ Cartridge
Carriage
Purge Unit
Sheet
Feeder
Paper Feed Motor
Paper
End
Sensor
J3
Carriage Motor
J1
J2
Cartridge
Control
Mechanism
Control
J4
VH (+27.6VDC)
AC Adapter
A0-18
A1-20
AD0-15
RES
Parallel Interface
CS0
D0-15
Data Bus AD0 to AD15
Reset IC
Temp.
Sensor
(TH1)
Logic Board
Vcc (+5VDC)
AC Inlet
Bi-Directional
Interface Control
Switch Detection
J5
RESET Button
ELECTRICAL SECTION
Figure 4-25 Printer Block Diagram
4-25
Part 4: Technical Reference
BJC-1000
4.2.2 Logic section components
1) MPU & Printer controller (IC1)
The MPU & Printer controller contains a 16-bit CPU, 1K-bit RAM, 20-bit address bus
port, 16-bit data bus port, stepping motor controller, A-D converter, interface
controller, DRAM controller, buffer controller, print head controller, I/O port, and
other components.
MPU & Printer controller is synchronized with 16 MHz and 22.11 MHz external clock
input.
Built-in CPU
The 16-bit CPU generates the 8 MHz clock from the 16 MHz external clock input and
is synchronized with the clock.
Address bus
The 20-bit address bus port is connected to an 8 M-bit control ROM and printer
controller.
Data bus
Like the address bus, the 16-bit data bus port is connected to the 8 M-bit control
ROM.
Stepping motor controller
The stepping motor controller outputs the carriage motor's single- and two-phase
exciter drive signal and paper feed motor's two-phase exciter drive signal.
The stepping motor controller switches the carriage motor with the 5-step peak
current value for optimum driving. The stepping motor controller outputs the
switching control signal to the carriage motor driver.
A-D converter
The A-D converter digitally converts the following external analog signals
received/sent through the I/O port to enable them to be detected by the MPU &
printer controller:
AN0: The printer's internal temperature is detected by the thermistor on the logic
board.
AN1: It detects whether the BJ cartridge is installed in the printer, or not.
AN2: It monitors the VH voltage which drives the head of the cartridge.
AN3: The head rank is detected by the rank resistor in the BJ cartridge.
Interface controller
The interface controller receives from the computer, 8-bit parallel data which is
synchronized with the data strobe pulse (STROBE) through the BUSY/ACKNLG
handshake. It also controls other interface signals.
DRAM controller
The DRAM controller controls the 1 M bit DRAM's 8-bit addressbus and 16-bit data
bus and also executes read/write control, RAS/CAS control, and refresh control.
4-26
Part 4: Technical Reference
BJC-1000
Buffer controller
The buffer controller automatically reads the print buffer, and clears the data after it
is read.
Print head controller
The print head controller counts the number of dots of the bit map print data read
from the DRAM print buffer to control the heat pulse width (pre/main pulse width),
converts it to the COM and SEG signals for 8 x 8 matrix printing control, and
controls heating of the heater plate of the bubble jet nozzles of the BJ cartridge.
I/O port
Signals for the setting statuses determined by the RESUME button, head ID, paper
end sensor, home position sensor, pick-up roller sensor, head rank resistor,
thermistor, and head-driving voltage (VH) monitor are input through the input ports.
Signals for operations such as BJ cartridge detection and head-driving voltage
control are output from the output ports.
2) Control ROM (IC3)
The 8 M-bit control ROM contains the program for printer control.
3) DRAM (IC4)
Controlled by the printer controller, the 1 M-bit DRAM is used as print buffer and
working area.
4) Reset IC (IC7)
This IC detects the power voltage when power on or instantaneous power failure
occur and resets the MPU & Printer controller.
5) EEPROM (IC8)
Controlled by the printer controller, the 1 K-bit EEPROM (Electrically Erasable and
Programmable ROM) stores various function settings, the total count of printed
sheets, and the total waste ink amount.
6) Paper feed motor driver IC (IC6)
Controlled by the MPU & Printer controller, the paper feed motor driver drives the
paper feed motor (controlled by the two-phase exciter) with a constant-voltage
unipolar drive. The driver IC has four same circuits.
7) Carriage motor driver IC (IC12)
Controlled by the MPU & Printer controller, the carriage motor driver drives the
carriage motor (controlled by the one to two-phase exciter) with a fixed current
bipolar drive. In accordance with the switching signal from the MPU & Printer
controller, the peak current value is set to five steps and driven.
The driver IC has two same circuits.
4-27
Part 4: Technical Reference
BJC-1000
5. SENSOR FUNCTIONS
The printer has a pick-up roller sensor, paper end sensor, home position sensor (purge
sensor), printer temperature sensor, and head temperature sensor.
Also, the EEPROM counts and records the waste ink absorption amount. When the
waste ink absorber becomes full, the waste ink absorption amount indicates an error.
Temperature Sensor (TH1)
BJ Cartridge
Paper End
Sensor
Flag
Home Position Sensor
(Purge Sensor)
Pick-up Roller Sensor
Figure 4-26 Sensors
5.1 Pick-up Roller Sensor
The photo interrupter-type pick-up roller sensor detects the initial position of the sheet
feeder's pick-up roller. When the initial position is detected, the flag interrupts the
sensor.
5.2 Paper End Sensor
The photo interrupter-type paper end sensor detects with the paper sensor arm's flag
when a sheet of paper passes through the paper feeding mechanism. When the flag
interrupts the sensor, the sensor does not detect the paper. When the flag does not
interrupt the sensor, the sensor detects the paper.
5.3 Home Position Sensor (Purge Sensor)
The photo interrupter-type home position sensor senses the home position edge and
detects the carriage position. After the edge is detected, the carriage moves to the right.
At the home position, the maintenance jet is executed.
Also, at the capping position, the on/off of the home position sensor (purge sensor) flag
during the recovery operation is detected.
4-28
Part 4: Technical Reference
BJC-1000
5.4 Temperature Sensor
The temperature sensor is a thermistor which detects the printer's internal
temperature. The thermistor's resistance changes along with any temperature
changes. The change in the resistance is detected as a change in the voltage by the
MPU & Printer controller. The analog value input to the MPU & Printer controller is
converted into a digital value by the internal A-D converter. The temperature is thereby
detected. After the printer temperature is detected, the head-driving and head
temperature adjustment signal are controlled accordingly.
5.5 Waste Ink Amount Detection
Waste ink is discharged for head maintenance and absorbed by the waste ink absorber.
If the amount of waste ink discharged exceeds the absorption capacity of the waste ink
absorber, ink might leak from the printer.
To prevent ink from leaking, the waste ink absorber capacity is estimated and detected
when full.
The waste ink is discharged during maintenance jet and recovery. The amount of
waste ink discharged is estimated by counting the number of maintenance jet and
recovery. Then the waste ink amount with evaporated ink is calculated. When the
calculated waste ink amount exceeds the capacity of the waste ink absorber, a waste
ink-full error occurs.
TABLE 4-2 LIST OF SENSOR FUNCTIONS
Sensor Function
Paper detection
Home position detection
BJ cartridge detection
BJ cartridge identification
Description
Detected by the paper sensor
Detected by the home position sensor
Detected by the HEATER signal of BJ cartridge
Identified by combination of the ID1 and ID2
signals (pins #11 and #15 of connector J1 on
the control board).*
Waste ink amount detection Calculated with the maintenance jet dot count
Paper width detection
Ink detection
Status
Provided
Provided
Provided
Provided
Provided
Not provided
Not provided
*: Cartridge types can be distinguished with combinations of the ID1 and ID2 signals
as shown in the table below.
Pin No.
11
15
Signal name
ID1
ID2
Black
High
Low
4-29
Cartridge type
Color
Low
High
Photo
High
High
Part 4: Technical Reference
BJC-1000
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4-30
Part 5
MAINTENANCE
Page
5- 1
5- 1
5- 1
5- 2
5- 3
5- 3
5- 3
5- 4
5- 5
5- 5
5- 7
5 -21
5 -21
5 -23
5 -24
5 -25
5 -25
5 -27
1. MAINTENANCE & SERVICING TOOLS
1.1 Maintenance
1.2 Servicing Tools
2. GREASE APPLICATION
3. DISASSEMBLY AND REASSEMBLY
3.1 Disassembly and Reassembly
3.2 Disassembly and Reassembly Cautions
3.3 Logic Board and Bottom Cover Replacement Cautions
4. TROUBLESHOOTING
4.1 Troubleshooting
4.2 Error Condition Diagnosis
5. LOCATION & SIGNAL ASSIGNMENT
5.1 Logic Board
5.2 Carriage Ribbon Cable
5.3 BJ Cartridges
6. CIRCUIT DIAGRAMS
6.1 Parts Layout
6.2 Circuit Diagram
Part 5: Maintenance
BJC-1000
1. MAINTENANCE & SERVICING TOOLS
1.1 Maintenance
1.1.1 Parts for Regular Replacement
Level
User
Service personnel
Part
None
None
1.1.2 Consumables
Level
User
Service personnel
Consumable
Black BJ cartridge
Color BJ cartridge
Photo BJ cartridge
None
1.1.3 Periodic Maintenance
Level
User
Service personnel
Periodic Maintenance
None
None
1.2 Servicing Tools
Ordinary Tool
Phillips screwdriver
Blade screwdriver
Tweezers
Multi-meter
Use
For removing screws
For removing plastic parts
For installing and removing coil springs
For troubleshooting
Special Tool (Parts Number)
Grease MOLYKOTE PG-641
(CK-0562-000)
Use
Apply to the specified place as shown in Figure 5-1
5-1
Part 5: Maintenance
BJC-1000
2. GREASE APPLICATION
Use the special tool to apply grease at the points and amounts shown below.
Belt Holder:
About 20mg (MOLYKOTE PG-641)
Rear Sides of Carriage Guide Frame:
About 35 to 65 mg (MOLYKOTE PG-641)
Idler Roller Shaft Section:
About a half-grain of rice (MOLYKOTE
PG-641)
Rubbing Section of Carriage and Carriage Shaft:
About 100 mg (MOLYKOTE PG-641)
Rubbing Section of Feed Roller Shaft and Coil Spring:
To a degree of greasiness (MOLYKOTE PG-641)
Rubbing Section of Carriage
Hook and Carriage:
About 9 to 18 mg (MOLYKOTE PG-641)
Figure 5-1 Grease Application Points
5-2
Part 5: Maintenance
BJC-1000
3. DISASSEMBLY AND REASSEMBLY
3.1 Disassembly and Reassembly
When disassembling or reassembling the printer, refer to the parts catalog. In the
parts catalog, figure numbers are in the order of disassembly. Close-up diagrams are
also provided for additional detail.
3.2 Disassembly and Reassembly Cautions
When disassembling or reassembling the printer, note the following precautions. These
cautions are also provided in the parts catalog.
5-3
Part 5: Maintenance
BJC-1000
3.3 Logic Board and Bottom Cover Replacement Cautions
3.3.1 Logic board replacement cautions
The various settings, waste ink amount, and other data stored in the logic board’s
EEPROM cannot be rewritten into the new EEPROM after the logic board is replaced.
The data in the new logic board’s EEPROM is not set. After the logic board/EEPROM is
replaced, reset the EEPROM as described in “Part 3: 2.4 EEPROM Reset” (page 3-13).
When replacing the logic board, visually check the amount of waste ink in the waste
ink absorber. Replace the bottom cover if necessary. Depending on the amount of
waste ink already absorbed, ink may leak even before a waste ink-full error warning
appears.
However, it is not necessary to replace it if the printer has been used for less than 2
weeks and less than 50 pages have been printed out.
Waste Ink Absorber
Figure 5-2 Bottom Cover
3.3.2 Cautions after replacing the bottom cover
After a waste ink-full error occurs and the bottom cover are replaced, reset the
EEPROM.
NOTE
When a waste ink-full error occurs, it can be assumed that the printer has
printed more sheets than its service life called for. However, this depends on
how many times the cartridge has been replaced and the usage conditions.
When a color BJ cartridge is used, more ink is consumed due to head
maintenance as compared to a black BJ cartridge. Therefore, the waste
ink amount will also be more.
5-4
Part 5: Maintenance
BJC-1000
4. TROUBLESHOOTING
4.1 Troubleshooting
4.1.1 Overview
This chapter consists of the following two sections on subsequent pages: “Error
condition diagnosis” for diagnosing the problem when the cause is unknown and
“Symptoms” for resolving problems whose cause is known.
If the cause of the problem is unknown, diagnose the problem. And if the cause is
known, follow the countermeasures to resolve the problem.
4.1.2 Troubleshooting cautions
1. Before troubleshooting, make sure the connectors and ribbon cable are properly
connected. If the problem occurs at random, be sure to check the connections.
2. When servicing the printer with its outer casing removed and the AC adapter
connected, beware of electrical shocks and PCB short circuiting.
3. Troubleshooting is described in flowchart form.
The following symbols are used in the flowcharts.
Start/End
Procedure
Judgement
Action/Replace
Jump
Stop
4. If there is a problem with the printing quality or paper feeding, first check that the
printer’s installation location and paper meet the required specifications. Also
check that the paper select lever and the paper thickness lever are set correctly
and that the paper is loaded properly.
5. After replacing parts or repairing the printer, be sure to make a test print to
confirm that the problem has been fixed.
If the problem still persists, troubleshoot again while skipping the steps already
executed.
5-5
Part 5: Maintenance
BJC-1000
Example
Countermeasure: After replacing the BJ cartridge, execute a test printout to check
whether the problem has been fixed.
If the problem persists, execute the next countermeasure step 2 which calls for the
replacement of the logic board.
Remove and reinstall
the cartridge
Printer
recognizes the
cartridge ?
Yes
No
1. Replace the
cartridge
2. Replace the
logic board
· Cartridge is faulty
· Check the cartridge
MPU is faulty
END
6. After completing the troubleshooting, be sure to reconnect connectors and tighten
any loosened screws.
CAUTION
When replacing the logic board, be sure to check the waste ink absorbers’
ink amount on the rear of the printer base unit. If necessary, reset the
EEPROM.
Refer to Part 3, 2.4 EEPROM Reset (page 3-13) and Part 5, 3.3 Logic Board and
Bottom Cover Replacement Cautions (page 5-4).
5-6
Part 5: Maintenance
BJC-1000
4.2 Error Condition Diagnosis
4.2.1 Initial self check
START
Connect the AC power
(power on)
MPU’s RAM/DRAM
check
Temperature sensor
check
EEPROM check
ROM check
Cartridge check
DRAM check
Waste ink check
OK ?
No
Yes
Waste ink full error
Home position check
OK ?
No
Yes
Home position error
Error code : 5000
Printing position
correction operation
Correct ?
Yes
No
Carriage control error
Next
Page
5-7
Error code : 5100
Part 5: Maintenance
BJC-1000
Previous
Page
Paper feed motor
initialization
Pick-up roller
initialization
Paper check
Paper
present ?
Yes
Paper eject operation
No
Yes
Paper
present ?
No
Paper jam
Cartridge check
No
Is cartridge
installed ?
Yes
· Auto cleaning is not performed if the BJ
cartridge is not installed.
Auto cleaning
· Cleaning check is not performed if the BJ
cartridge is not installed.
Cleaning check
Correct ?
Yes
No
Purging operation error
END
5-8
Error code : 5C00
Part 5: Maintenance
BJC-1000
4.2.2 Error recovery
a) Error display
1.No Cartridge
Error (Code : 5600)
<Cause> The cartridge is not installed correctly.
<Suspected Parts> Cartridge, logic board, carriage connector
<Measure>
BJ cartridge
reinstallation
Any error
display ?
Yes
No
END
1. Replace BJ cartridge
2. Replace logic board
3. Replace carriage
unit
5-9
Part 5: Maintenance
BJC-1000
2.Home Position
Error (Code : 5000)
<Cause> The home position cannot be detected.
<Suspected Parts> Home position sensor, carriage motor,
logic board, carriage ribbon cable
<Measure>
· Check for any paper jams, carriage belt
wear/deterioration/dislocation, deformation of the
carriage or carriage guide, scratching or bending in the
carriage shaft, etc.
· Move the carriage by hand and check that it moves
smoothly and there is no abnormal noise.
Visual check of carriage
drive mechanism
Correct ?
No
Yes
Repair/replace faulty parts
· Turns on during initialization ?
· Out of sync ?
Carriage motor
operation check
Correct ?
No
Yes
Carriage motor check
Measuring points Normal reading
J2
1-2
Approx. 11 Ω
Pin No.
3-4
Correct ?
Yes
No
Replace carriage motor
Replace logic board
and check waste ink
absorbers
Measuring points Sensor
J1
Open
Pin No. 29
Closed
Home position
sensor check
Correct ?
Yes
Replace logic board
No
Normal reading
Low level
High level
While the power is on, open the front cover and remove
the BJ cartridge. Move the carriage's home position
sensor by hand and check.
Replace carriage
unit
· Home position sensor is faulty
· Ribbon cable is loose
· MPU & Printer controller is faulty.
5-10
Part 5: Maintenance
BJC-1000
<Cause> •The paper feed operation is executed but the paper is
3.Paper Feed
Error/Paper Jam
not fed.
•The paper eject operation is executed but the paper
is not ejected.
<Suspected Parts> Paper feed mechanism, pick-up roller
sensor, paper end sensor, logic board
<Measure>
Visual check of paper
feed mechanism
Correct ?
Visually check for paper jams.
Check for gear deformation or damage.
No
Yes
Repair/replace faulty part
Yes
Error occurs
No
END
During initialization, do the paper feed motor,
pick-up roller, feed roller, eject roller, etc.,
rotate? Any abnormal noises? Is the paper
feed motor out of sync?
Paper feed
operation check
No
Correct ?
Repair/replace faulty part
Yes
Replace logic board
When the pick-up roller turns, is the paper fed
properly from the sheet feeder ?
Paper feed check
Correct ?
Yes
No
Check sheet feeder unit
Separation Sheet
Rubber Ring
Next
Page
Any contamination, wear, or deterioration of
the pick-up roller's rubberring separation
sheet, rod cam dislocation, gear deformation
or damage, etc?
5-11
Part 5: Maintenance
BJC-1000
Pick-Up Roller Sensor Flag
Paper
Paper sensor
Previous
Page
Pick-Up Roller Sensor
Pick-Up Roller
Pick-up roller sensor
flag check
Paper Sensor Arm
Check for pick-up roller sensor flag
deformation or damage.
Correct ?
No
Replace pick-up
roller unit
Yes
Measuring points
MPU & Printer controller
Pin No. 49
Pick-up roller
sensor check
Sensor
Open
Closed
Normal reading
Low level
High level (Initial condition)
Check by moving the pick-up roller
by hand while the powerison.
Correct ?
No
Yes
Replace logic board
Check for any deformation or wear.
Any deformation or damage?
Paper end sensor
arm check
Correct ?
No
Replace paper end
sensor arm
Yes
Repair/replace the
faulty part
Measuring points
MPU & Printer controller
Pin No. 48
Paper sensor check
Sensor
Open
Closed
Normal reading
Low level (Paperpresent)
High level (Nopaper)
Check by moving the paper end sensor arm
by hand while the power is on.
Correct ?
Yes
No
Replace logic board
END
5-12
Part 5: Maintenance
BJC-1000
<Cause> The waste ink absorbers’ estimated waste ink amount
4.Waste Ink Full
Error
has reached 100%.
<Suspected Parts> Waste ink absorbers, logic board
<Measures> 1.Reset the EEPROM and replace the bottom
cover unit.
2.Replace logic board.
5.Printer
Temperature
Sensor Error
<Cause> Thermistor is abnormal.
<Suspected Parts> Thermistor
<Measures> Replace logic board.
(Code : 5400)
<Cause> The printing position correction value cannot be
6.Carriage
Control Error
(Code : 5100)
detected.
<Suspected Parts> Carriage motor, logic board, home
position sensor
<Measures> See countermeasures for home position sensor
error.
5-13
Part 5: Maintenance
BJC-1000
7.Purging
Operation Error
(Code : 5C00)
<Cause> Cleaning is not executed properly or not being detected.
<Suspected Parts> Home position sensor, sensor arm, purge
unit, carriage ribbon cable, logic board
<Measure>
During initialization, do the paper feedmotor,
pick-up roller, feed roller, eject roller, etc.,
rotate? Any abnormal noises? Is the paper
feed motor out of sync?
Visual check of paper
feed system operation
Correct ?
No
Yes
1. Repair/Replace faulty
part
2. Replace logic board
Sensor arm check
Sensor Arm
Move it by hand and see if it moves smoothly.
Also, any deformation or damage at the
location sindicated by the arrow?
Correct ?
No
Replace sensor arm
or repair/replace
faulty part
Yes
Purge unit check
Remove the purge unit and move it as shown
by the arrow to check if it moves smoothly.
Any gear deformation or damage?
Correct ?
Yes
Disassemble and
check the paper feed
motor drive switching
mechanism
No
Replace purge unit
If the gear is deformed or damaged, disassemble
and check the paper feed motor drive switching
mechanism refer to Part 4:3.4.24) Switching the
paper feed motor drive transmission (page 4-21).
5-14
Part 5: Maintenance
BJC-1000
b) Symptoms
<Symptom> The printer does not perform initializing even
1. The Power Does
Not Turn On
when the AC plug is connected.
<Cause> The AC adapter and/or control board is faulty.
<Measure>
START
With the AC adapter and logic board connected by the
DC connector cable, check and measure the output
voltage of the J4 connector pins as shown below:
DC plug output
voltage check
Pin set
2 – 4 or 2 – 5
3 – 4 or 3 – 5
Is it output
correctly ?
No
Replace the AC adapter
Yes
Replace the logic board
5-15
Output voltage
+27.6 VDC
+5.0 VDC
Part 5: Maintenance
BJC-1000
<Symptom> •The cartridge installed is not recognized.
2. The Printer Does
Not Recognize
The Cartridge
•The installed cartridge is recognized incorrectly.
<Cause> •Faulty contacts between the cartridge and carriage.
•The cartridge is faulty.
•The carriage ribbon cable is faulty.
•The logic board is faulty.
<Measure>
Remove and reinstall
the cartridge
Does the
printer
recognize the
cartridge?
No
Yes
1. Replace the
cartridge
· Cartridge is faulty.
· Check the cartridge.
2. Replace the
logic board
· MPU & Printer controller is faulty.
3. Replace the
carriage unit
· The carriage ribbon cable is faulty.
END
To confirm that the cartridge is not being recognized
correctly, check for conductivity at the check points
indicated in the diagram below.
32 31 30 29 28 27 26 25
18 15 14 13 12 11 10 7
20
23
24
Black BJ Cartridge
Check
Pin No. 26-25
28-25
Normal reading
Approx. 0 Ω
∞
Pin No
Normal reading
26-25
28-25
17
8
5
22
3
21
4
2
1
Color BJ Cartridge
Photo BJ Cartridge
Check
6
9
19
∞
5-16
Check
Normal reading
Pin No. 26-25
28-25
Approx. 0 Ω
∞
Part 5: Maintenance
BJC-1000
<Symptom> •The printer does not print at all.
3.Faulty Printing
<1>: No Printing
•Printing stops mid-way.
•Only a certain color is printed.
<Cause> •The ink has run out or the BJ cartridge is faulty.
•The control board, the carriage ribbon cable, or the
purge unit is faulty.
<Measure>
Remove and reinstall
the BJ cartridge
While the printer is on, double-click the RESUME button.
A nozzle check pattern will be printed out.
Execute a test print
Print defects?
No
Yes
END
Replace the BJ
cartridge
Print defects
even after
cartridge
replacement?
No
END
Yes
1. Replace the
logic board
2. Replace the purge
unit
· Purge unit
3. Replace the carriage
unit
· Carriage ribbon cable faulty
5-17
Part 5: Maintenance
BJC-1000
<Symptom> •There is blotching.
4 Faulty Printing
<2>: White
Stripes Appear
•There are white stripes.
•The specified dots are not printed.
<Cause> •The BJ cartridge or cartridge contacts are faulty.
•The carriage ribbon cable is faulty.
•The purge unit or paper feed mechanism (missing
gear tooth) is faulty.
<Measure>
White Line Sample
Printer environment
and paper
specifications check
Required
specifications
met ?
Troubleshooting consists of error condition
diagnosis, which is required if the cause of an error
is unknown, and error recovery, which is performed
if the cause of an error is known. If the cause of
an error is unknown, perform the error condition
diagnosis, and if it is known, perform error
recovery.
No
Yes
Use printing paper
that meets the
specifications
Remove and reinstall
the BJ cartridge
While the printer is on, double-click the RESUME button.
A nozzle check pattern will be printed out.
Execute a test print
Print defects ?
No
Yes
END
Replace the BJ cartridge
Blotches and
stripes still appear
after cartridge
replacement ?
No
END
Yes
Conduction of carriage
ribbon cable check
Conduction
cutoff ?
Yes
No
Replace the purge unit
Replace the carriage
unit
5-18
Part 5: Maintenance
BJC-1000
5 Faulty Printing
<3>: Other
Print Problems
Symptom
Check Item
Measures
Paper contamination
Ink mist on the platen.
Use a soft cloth moistened
with water to clean.
Ink has clogged around the
head’s nozzles. (No paper
contamination during paper
feeding and discharging.)
Perform cleaning operations
several times. If problem
persists, replace the BJ
cartridge.
Ink has clogged (or paper bits
have stuck) around the purge
unit's head wiper or head
capping area.
Replace the purge unit.
Ink has adhered to the paper
transport system. (The paper
is already contaminated by
the time it reaches the platen.)
Disassemble the paper
transport system and use a
soft moist cloth to clean.
Ink has adhered to the spurs.
Use a soft toothbrush to
clean.
The spurs are deformed.
Replace the front cover unit.
The BJ cartridge is installed
incorrectly.
Reinstall the BJ cartridge
correctly.
The paper thickness lever is
not set properly.
Set the lever at the specified
position.
The problem occurs when the
user’s BJ cartridge (causing
the problem) is installed in a
normally-operating printer.
Replace the BJ cartridge.
The carriage guide frame is
deformed.
Replace the printer frame unit.
Frictional wear between the
carriage base and carriage
shaft.
Replace the carriage unit.
Check the printing mode.
Set the desired printing mode.
The BJ cartridge is faulty.
Replace the BJ cartridge.
Spur tracks appear
Vertically-oriented
printed lines are
misaligned.
Corrugated printing
The printout is either
light or dark.
5-19
Part 5: Maintenance
BJC-1000
<Symptom> •Nothing is printed.
6.Faulty Interface
•An unspecified font is printed.
•An unspecified color is printed.
<Cause> •The printer driver setting is faulty.
•The interface cable is faulty.
•The printer’s logic board is faulty.
<Measure>
While the printer is on, double-click the RESUME button.
The nozzle check pattern is printed out.
Set the printeroffline
and execute a test print
Print normal ?
No
Yes
Replace the logic board
Check the computer’s
settings:
• Printer driver settings
Settings correct ?
No
Set again
Yes
Transfer the print data
from the host
computer to the
printer.
Is the data
printed
correctly ?
Yes
END
No
1. Replace the
interface cable
2. Replace the logic
board
· Interface connector is faulty
· MPU & Printer controller is faulty
5-20
Part 5: Maintenance
BJC-1000
5. LOCATION & SIGNAL ASSIGNMENT
5.1 Logic Board
4
1
2
J2
1
J1
31
32
5
J4
1
5
1
J3
19
J5
1
18
36
Figure 5-3 Logic Board
J1/CNH (Ribbon cable connector)
Pin No.
Signal name IN/OUT
1
Not used
2
HPS-A
OUT
3
GND
...
4
HPS
IN
5
HSEG7
OUT
6
HCOM3
OUT
7
GND
...
8
HRANK3
IN
9
HRANK2
IN
10
HRANK1
IN
11
ID1
IN
12
HCOM5
OUT
13
ID3
IN
14
HCOM6
OUT
15
ID2
IN
16
GND
...
17
HCOM7
OUT
18
HSEG3
OUT
19
HCOM4
OUT
20
HSEG2
OUT
21
HCOM8
OUT
22
HSEG1
OUT
23
HSEG4
OUT
24
HEATER
OUT
25
GND
...
26
HCOM2
OUT
27
HCOM1
OUT
28
HSEG8
OUT
29
HSEG6
OUT
30
HSEG5
OUT
31
HEATER
OUT
32
GND
...
Description
Photo LED drive
Ground
Home position sense High / Low (sense)
SEG7 heat enable
COM3 heat enable
Ground for head rank
Head rank sense
Head rank sense
Head rank sense
BJ cartridge recognition signal (See Table 5-1.)
COM5 heat enable
(Not used)
COM6 heat enable
BJ cartridge recognition signal (See Table 5-1.)
Ground
COM7 heat enable
SEG3 heat enable
COM4 heat enable
SEG2 heat enable
COM8 heat enable
SEG1 heat enable
SEG4 heat enable
Warm-up heater voltage VH and Detection signal
GND for warm-up heater voltage VH
COM2 heat enable
COM1 heat enable
SEG8 heat enable
SEG6 heat enable
SEG5 heat enable
Warm-up heater voltage VH and Detection signal
GND for warm-up heater voltage VH
5-21
Part 5: Maintenance
BJC-1000
J2/CNCR (Carriage motor connector)
Pin No.
Signal name IN/OUT Description
1
CRA
OUT
Carriage motor phase A
2
CRA
OUT
Carriage motor phase A
3
CRB
OUT
Carriage motor phase B
4
CRB
OUT
Carriage motor phase B
J3/CNLF (Paper feed motor connector)
Pin No.
Signal name IN/OUT Description
1
LFA
OUT
Paper feed motor phase A
2
LFA
OUT
Paper feed motor phase A
3
VM
...
Common
4
LFB
OUT
Paper feed motor phase B
5
LFB
OUT
Paper feed motor phase B
J4/CNPS (Power Supply connector)
Pin No.
Signal name IN/OUT Description
1
Change VH
OUT
2
VH
IN
27.6 VDC
3
Vcc
IN
5 VDC
4
GND
...
Ground
5
GND
...
Ground
J5/CINF (Interface connector)
Pin No.
Signal name IN/OUT Description
1
STROBE
IN
See Part2: 2.3 Interface Specifications (page 2-9) for
2
DATA1
IN
details.
3
DATA2
IN
4
DATA3
IN
5
DATA4
IN
6
DATA5
IN
7
DATA6
IN
8
DATA7
IN
9
DATA8
IN
10
ACKNLG
OUT
11
BUSY
OUT
12
P.E.
OUT
13
SELECT
OUT
14
AUTO FEED XT
IN
15
N.C.
...
16
INIT
IN
17
GND
...
18
N.C.
...
19
STROBE-RET
...
20
DATA1-RET
...
21
DATA2-RET
...
22
DATA3-RET
...
23
DATA4-RET
...
24
DATA5-RET
...
25
DATA6-RET
...
26
DATA7-RET
...
27
DATA8-RET
...
28
ACKNLG-RET
...
29
BUSY-RET
...
30
P.E.-RET
...
31
INIT
IN
32
ERROR
OUT
33
GND
...
34
N.C.
...
35
+5.0V
...
36
SELECT IN
IN
5-22
Part 5: Maintenance
BJC-1000
5.2 Carriage Ribbon Cable
4 3
3 2
1
7
5 29 30 31 32
8
9
26 27
28
6
10
19
11
12
13
14
15
23
17 21
16
18 20 22 24 25
31
24
32
Figure 5-4 Carriage Ribbon Cable
Pin No. Signal name IN/OUT Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Not used
HPS-A
GND
HPS
HSEG7
HCOM3
GND
HRANK3
HRANK2
HRANK1
ID1
HCOM5
ID3
HCOM6
ID2
GND
HCOM7
HSEG3
HCOM4
HSEG2
HCOM8
HSEG1
HSEG4
HEATER
GND
HCOM2
HCOM1
HSEG8
HSEG6
HSEG5
HEATER
GND
OUT
...
IN
OUT
OUT
...
IN
IN
IN
IN
OUT
IN
OUT
IN
...
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
...
OUT
OUT
OUT
OUT
OUT
OUT
...
Photo LED drive
Ground
Home position sense High / Low (sense)
SEG7 heat enable
COM3 heat enable
Ground for head rank
Head rank sense
Head rank sense
Head rank sense
BJ cartridge recognition signal (See Table 5-1.)
COM5 heat enable
(Not used)
COM6 heat enable
BJ cartridge recognition signal (See Table 5-1.)
Ground
COM7 heat enable
SEG3 heat enable
COM4 heat enable
SEG2 heat enable
COM8 heat enable
SEG1 heat enable
SEG4 heat enable
Warm-up heater voltage VH and Detection signal
GND for warm-up heater voltage VH
COM2 heat enable
COM1 heat enable
SEG8 heat enable
SEG6 heat enable
SEG5 heat enable
Warm-up heater voltage VH and Detection signal
GND for warm-up heater voltage VH
BJ cartridge
pin no.
18
14
32
31
30
29
28
12
27
11
26
25
10
7
13
6
9
5
8
2,3
1
15
16
17
19
20
22,23
24
Cartridge types BC-02, BC-05 and BC-06 can be distinguished with combinations of
the ID1 and ID2 signals as shown in the table below.
TABLE 5-1 BJ CARTRIDGE RECOGNITION
J1 pin no. BJ cartridge pin no.
15
11
26
28
Signal name
ID2
ID1
5-23
Cartridge type
BC-02 BC-05 BC-06
Low
High
High
High
Low
High
Part 5: Maintenance
BJC-1000
5.3 BJ Cartridges
32 31 30 29 28 27 26 25
18 15 14 13 12 11 10 7
19 16
9
20
8
23
24
17
6
5
22
3
21
4
2
1
Figure 5-5 Contact Pad
BLACK BJ CARTRIDGE
Pin No. Signal name IN/OUT
1
HGND1
OUT
2
HEATER1
IN
3
TMPSEN1A
IN
4
TMPSEN1C OUT
5~8
SEG1~4
IN
9~16
COM1~8
IN
17~20
SEG8~5
21
TMPSEN2C
22
TMPSEN2A
23
HEATER2
24
HGND2
25
GND
26
ID2
27
Not used
28
ID1
29~32
HRANK
IN
OUT
IN
IN
OUT
GND
OUT
...
OUT
Description
GND for warm-up heater voltage VH
Warm-up heater voltage VH and Detection signal
Temperature sensor 1, anode (Not Used)
Temperature sensor 1, cathode (Not Used)
SEG1~4 heat enable
COM1~8 heat enable
SEG8~5 heat enable
Temperature sensor 2, cathode (Not Used)
Temperature sensor 2, anode (Not Used)
Warm-up heater voltage VH and Detection signal
GND for warm-up heater voltage VH
BJ cartridge recognition signal
BJ cartridge recognition signal
Head rank
COLOR/PHOTO BJ CARTRIDGE
Pin No. Signal name IN/OUT Description
1
HGND1
OUT GND for warm-up heater voltage VH
2
Not used
...
3
HEATER1
IN
Warm-up heater voltage VH and Detection signal
4
Not used
...
5~8
SEG1~4
IN
SEG1~4 heat enable
9~10
COM1~2
IN
COM1~2 heat enable (Cyan)
11
Not used
...
12~13
COM4~5
IN
COM4~5 heat enable (Magenta)
14
Not used
...
15~16
COM7~8
IN
COM7~8 heat enable (Yellow)
17~20
SEG8~5
IN
SEG8~5 heat enable
21
Not used
...
22
HEATER2
IN
Warm-up heater voltage VH and Detection signal
23
Not used
...
24
HGND2
OUT GND for warm-up heater voltage VH
25
GND
GND
26
ID2
OUT BJ cartridge recognition signal
27
GND
GND
28
ID1
OUT BJ cartridge recognition signal
29~32
HRANK
Head rank
5-24
J1 pin no.
25
24
24
22,20,18,23
21,17,14,12
19,6,26,27
28,5,29,30
31
31
32
16
15
13
11
10,9,8,7
J1 pin no.
25
24
24
22,20,18,23
21,17
14
12,19
6
26,27
28,5,29,30
31
31
32
16
15
13
11
10,9,8,7
Part 5: Maintenance
BJC-1000
6. CIRCUIT DIAGRAMS
6.1 Parts Layout
6.1.1 Logic board
Figure 5-6 Logic Board (Top View)
5-25
Part 5: Maintenance
BJC-1000
Figure 5-7 Logic Board (Bottom View)
5-26
Part 5: Maintenance
BJC-1000
6.2 Circuit Diagrams
7
6
5
4
IC7
+5V
C2
0.1 , 50V
7
6
5
4
3
2
1
0
+5V
FB2
+5V
0.01 .50V IP9
C60
1000p,50V
<02-C4> ID2
C3
IC4
<02-D4>
17
18
19
20
A2
A3
A4
VCC
A7
A6
A5
VSS
C61
0.1 , 50V
LC321664BJ-70
15
14
13
12
11
10
9
8
CP33
8
7
6
5
CP34
CP35
+5V
TH1
<04-B4>
<02-C4>
<02-E4> HRANK 42
43
<02-D4> HDO 44
45
<02-E4> HEAT
46
<04-D6> VHC
47
SNC
<03-E8>
48
<03-C8> PES
49
<03-A8> RRS
50
<04-B4> ISA
+5V
51
FP1
C6
0.01 ,50V
52
C4
0.01 , 50V
R75
0.2A
CP15
CP14
CP13
CP21
CP20
CP19
CP18
CP22
CP16
157
164
163
162
161
160
159
158
VSS
AFXT
INITN
FAULT
SELIN
P91
VSS
VDD
175
174
173
172
171
170
169
168
167
166
165
181
180
179
178
177
176
VSS
IFD0
IFD1
IFD2
IFD3
190
189
188
192
191
187
186
185
184
183
182
RESN
P71
SCLK
TXD
RXD
STBN
VDD
VDD
IFD4
IFD5
IFD6
IFD7
VSS
ACK
BUSY
PE
SLCT
VDD
A9
A8
A7
A6
A5
A4
A3
A2
A1
VDD
VSS
RDN
CS1N
CS0N
MPU & Printer Controller
IC1
T6W79
VDD
AD15
AD14
AD13
AD12
AD11
VSS
AD10
AD9
AD8
AD7
VDD
AD6
AD5
AD4
P92
P90
P41
P85
P42
P60
VDD
AD3
AD2
AD1
AD0
VSS
VDD
20
156
155
154
CP12
20
19
18
17
16
153
152
151
150
149
148
147
146
145
15
14
13
12
11
144
143
142
141
140
10
9
8
7
6
5
139
138
137
136
135
134
133
132
131
130
129
128
127
126
4
3
2
1
E
+5V
Control ROM(8Mbit)
15
14
13
12
11
DILB42P-BJ
19
18
8
1 A18
2 A17
3 A7
4 A6
5 A5
6 A4
7 A3
8 A2
9 A1
10 A0
11 CE
FP144
FP145
FP146
FP147
FP148
FP149
FP150
FP151
0
8
1
FP152
FP153
FP154
FP155
FP156
12
13
14
15
16
GND
DE
D0
D8
D1
FP157
FP158
FP159
FP160
FP161
17
18
19
20
21
D9
D2
D10
D3
D11
9
2
C10
10
0.1 , 50V 3
11
10
9
8
7
117
116
115
114
113
112
111
110
109
108
107
106
105
FP141
FP142
FP143
7
C11
6
0.1 , 50V
5
4
3
+5V
2
1
CS0
CP11
125
124
123
122
121
120
119
118
IC3
C12
0.1 , 50V
N.C 42
A8 41
A9 40
A10 39
A11 38
A12 37
A13 36
A14 35
A15 34
A16 33
BYTE/VPP 32
FP182
FP181
FP180
20
9
10
FP179
FP178
FP177
FP176
FP175
FP174
FP173
FP172
11
12
13
14
15
16
17
GND
D15/A1-1
D7
D14
D6
31
30
29
28
27
FP171
FP170
FP169
FP168
FP167
D13
D5
D12
D4
VDD
26
25
24
23
22
FP166
FP165
FP164
FP163
FP162
D
15
7
14
6
13
5
12
4
C
+5V
C63
0.01 , 50V
0.01 , 50V C47
FB3
6
5
4
3
2
1
0
FB4
+5V
B
16
C9
0.1 , 50V
+5V
B A B
C5
16
LFB
+5V
1 2 3
<04-B5> CHSMI
<04-A4> ISB
+5V
A12
A11
VSS
VSS
A10
P53/AN3
AVDD
P34
P72
A
0
CR[3..0] 4
0.1 , 50V
VDD
PC0
PC1
PC2
PC3
VSS
P40
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
VDD
VSS
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
VDD
P36
P35
AVSS
P50/AN0
P51/AN1
P52/AN2
0
1 2 3
4 5 6 7 15 14 13 12 11 10 9 8
<04-B8>
LFA
<04-B8>
<04-B8>
LFA <04-B8>
CRSTB <04-B4>
LFB
C8
0.01 , 50V
IP55
R3
1M, 1/10W
DRAM(1Mbit)
9
0 1
2 3 4 5 6 7 8
X1
1
2
0.2A
2
3
4
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
A20
A19
A18
A17
A16
A15
VDD
A14
A13
R4
0
1
VSS
I/O16
I/O15
I/O14
I/O13
I/O12
I/O11
I/O10
I/O9
N.C.
VSS
CAS
OE
N.C.
N.C.
N.C.
HDI
ID1
A21
IP48
IP49
IP50
IP51
IP52
IP53
IP54
CP32
VCC
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
I/O8
N.C.
VCC
UW
LW
RAS
A0
A1
PB3
P86
P93
P94
P95
P87
IP46
IP47
0
1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
4
5
VSS
VDD
104 VSS
8
<03-F6>
+5V
CP10
SEG[7..0]
7 0.1
50V
C14
CP9
<02-D4> HPS
7
6
5
4
3
2
1
0
5 6
C7
0.1 , 50V
CP7
CP8
8
PB2
53 VSS
54 P61
55 P62
56 P63
<02-C8>
COM[7..0]
47K, 1/10W, 0.5%
NTH5G2M40B473J05TE
R1
<02-E8>
CP6
C1
0.1 , 50V
PB1
3
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
CP5
C44
0.1 , 50V
4
LWN
UWN
CASN
RASN
OEN
MA0
MA1
VDD
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA9
VSS
X1
X2
VSS
VDD
P82
P83
P64
P65
P66
P67
+5V
PB0
2
6
7
8
9
CP17
RESET SW
1 2 3
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
4
0
+5V
F
IFD[7..0]
8
+5V
IP41
IP42
IP43
IP44
IP45
3
R48
FP72 100, 1/10W
0.01 ,
50V
C15
VSS
XO
1
CP3
CP4
2
+5V
LOGIC BOARD 01
C13
0.1 , 50V
CP2
SW1
CP24
CP23
M62781GP
R31
4.7K, 1/10W
1
FP2
KTST
CP1
R30
4.7K, 1/10W
JP1
200
199
198
197
196
195
194
193
IP3
IP4
FP3
VSS
PA5
PA4
PA3
PA2
PA1
PA0
VDD
SK
RCS
OUT
GND
IP26
IP27
IP28
IP29
IP30
IP31
IP32
IP33
IP34
IP35
IP36
IP37
IP38
IP39
IP40
RD0
IP6
IP1
IP2
RD1
CST22.11MXW040
VCC
IP25
1 NC TEST 8
2 VCC GND 7
3 CS
D0 6
4 SK
D1 5
OUT OUT 3
GND
57 P70
58 P73
59 MD0
60 VSS
61 VDD
62 MD1
63 MD2
64 MD3
65 MD4
66 MD5
67 MD6
68 MD7
69 MD15
70 MD14
71 MD13
72 MD12
73 MD11
74 MD10
75 MD9
76 MD8
IPS
1
2
3
C25
0.1 , 50V
208
207
206
205
204
203
202
201
S-29130AFJ-TB
C26
1000p,50V
2
C43
1000p, 50V
TMOD2
TMOD1
TEST
P37
P33
PA7
PA6
VDD
EEPROM(1Kbit)
IC8
X2
1
1
ACK <03-D6>
BUSY
<03-D6>
PE
<03-D6>
SLCT <03-C6>
AFXT <03-C6>
INIT <03-C6>
FAULT <03-C6>
SELIN <03-C6>
IFC
<03-E8>
STB <03-E6>
1M, 1/10W
FP73
Reset IC
+5V
2
R2
R39
10K, 1/10W
+5V
3
Oscillator
+5V
XI
VDD
VSS
8
A
OUT OUT
3
GND
CST16.00MXW0C4
Oscillator
5-27
Part 5: Maintenance
BJC-1000
8
7
6
5
4
3
2
1
LOGIC BOARD 02
VH
F
CNH
R136
F138
47K, 1/10W
R111
CNH
150, 1/10W
VH-G
R101
510, 1/4W
3
IP94
Q1
FP34
2
27
R102
150, 1/10W
510, 1/4W
IP95
1
Q2
2
26
150, 1/10W
IC13
R103
3
ULN2803AN DIP-18p
510, 1/4W
1
0
COM1
1
COM2
FP11
2
2
COM3
FP12
3
3
COM4
FP13
4
4
COM5
FP14
5
5
COM6
FP15
6
6
COM7
FP16
7
7
COM8
FP17
8
FP42
9
00
10
01
11
02
12
13
03
14
04
05
15
16
06
17
07
GND
VH
18
IP85
17
IP86
16
IP87
15
IP88
14
IP89
13
IP90
12
IP91
11
IP92
10
IP96
R104
510, 1/4W
R105
510, 1/4W
3
IP97
HEAT
R137
4.7K, 1/10W
HCOM3
2
1
Q4
2
<01-B6> HDO
3
IP98
510, 1/4W
510, 1/4W
R123
100K, 1/10W
HCOM4
<01-C6> HDI
Q5
2
3
IP99
1K, 1/10W
1
IP12
3
IP100
510, 1/4W
IC14
1
Q7
FP40
2
3
IP102
1
< 03-D6, 03-C7, 03-B7>
3
2
Vsen
R128
10K, 1/10W
C106
1000p, 50V
RD6.8MW
FP19
2
2
SEG3
FP20
3
3
SEG4
FP21
4
4
SEG5
FP22
5
5
SEG6
FP23
6
6
7
SEG7
FP24
7
SEG8
FP25
8
FP43
9
10
00
11
01
12
02
13
03
14
04
15
05
16
06
17
07
GND
VH
17
FP27
16
FP28
15
FP29
14
FP30
13
FP31
12
FP32
11
FP33
10
FP45
HSEG8
HSEG7
29
HSEG6
30
HSEG5
23
HSEG4
18
HSEG3
20
HSEG2
22
HSEG1
HEATER
HEATER
32
GND
25
GND
16
GND
2
HPS-A
4
HPS
3
GND
11
ID1
FP61
D
R126
39K, 1/10W
FP59
IP204
IP202
IP203
FP60
FP55
C108
0.01 , 50V
C
R131
10K, 1/10W
HCOM8
5
31
24
+5V
Q8
2
FP41
28
R125
390, 1/10W
R129
10K, 1/10W
C107
0.01 , 50V
<01-C6> ID2
FP26
E
FP52
+5V
100, 1/10W
HCOM7
2SB1443Q x 8
18
FP51
2
VH-G
VH-G
R130
IP7
1
21
3
IP8
FP53
R132
C109
0.01 , 50V
15
ID2
13
ID3
C110
0.01 , 50V
100, 1/10W
SEG2
GND
ZD4
<01-C6> ID1
17
R118
IP101
HCOM6
ULN2803AN DIP-18p
1
HRANK3
7
D1F54
FP50
VH-G
C105
100p, 50V
14
R117
D5
1
Q9
2SB1443Q
Q10
FA1L4M
2
HCOM5
FP39
IP16
5.6K, 1/4W
3 DA1
DAN217
FP38
1
Q6
2
2
R124
IP10
1
12
150, 1/10W
R108
8
1
HRANK2
IP17
1
FP37
R116
150, 1/10W
FP18
9
8
FP58
IP11
<01-D7> HPS
VH-G
SEG1
HRANK1
VH
R121
IP15
FP36
19
150, 1/10W
R107
Head Driver
Q3
2
R122
2.7K, 1/4W
Heater Driver
IP14
1
R115
FP44
HCOM2
3
150, 1/10W
0
10
FP57
R120
<01-B6>
6
150, 1/10W
C103
0.047 , 50V
SEG[7..0]
FP56
R119
20K, 1/10W
C102
0.01 , 50V
HCOM1
1
R114
R106
<01-D8>
ZD2
RD6.2MB1
C101
, 50V
FP35
R113
FP10
0.01
10K, 1/10W
6.8K, 1/10W
VH-G
<01-D8>
R135
10K, 1/10W
IP13
HRANK
+
3
COM[7..0] 8
<01-C6>
J1(1/2)
1
R112
C104
1000 , 35V
J1(2/2)
+5V
ZD5
RD6.8SB3
FP54
B
1
NC
Home Position Sensor
C113
0.047 , 50V
HPS-A
VH-G
1
3
2
4
VH-G
HPS
GND
A
5-28
Part 5: Maintenance
BJC-1000
8
7
6
5
4
3
2
1
LOGIC BOARD 03
IFD[7..0]
8
< 01-F2 >
CNIF
J5
< 03-E6, 03-D3,03-E4, 03-B3> Vif
F
FCN-684J036-L/U B
(36pin)
+5V
BLM21A025 x 8
1
Q12
FP74
< 01-F3 > IFC
3
IP77
R7
10, 1/10W
2
1
IP78
R8
10, 1/10W
3
2
IP79
R9
10, 1/10W
4
3
IP80
R10
10, 1/10W
5
4
IP81
R11
10, 1/10W
6
5
IP82
R12
10, 1/10W
7
6
IP83
R13
10, 1/10W
8
7
IP84
R14
10, 1/10W
9
FN1A4P
2
FP75
Vif
< 03-F2, 03-E4,03-D3, 03-B3>
R82
47K, 1/10W
+5V
< 03-F2, 03-D3,03-E6, 03-B3>
Q11
< 01-B6 >
0
SNC
FP76
< 01-F3 >
3
STB
IP76
R304
Vsen
< 01-F3 >
ACK
IP74
R302
< 01-F3 >
PE
Vsen
< 01-F3 >
SLCT
FP71
< 01-B6 >
PES
< 01-F3 >
R38
390, 1/10W
FAULT
FB76
5
FB77
< 01-F3 >
10K, 1/10W
1
SELIN
IP68
2
FB80
9
FB81
RA3
3.3K, 1/8W
10, 1/10W
FP111
FP112
FP113
FP116
FP117
FP118
FP119
390, 1/10W
R58
10, 1/10W
R305
FP120
FP121
FP123
1K, 1/10W
FP124
R306
FP207
FP205
1K, 1/10W
INIT
IP70
R307
FP126
FP127
FP128
1K, 1/10W
FP129
C28
0.01 , 50V
R56
100, 1/10W
FP130
FP131
Paper End Sensor
< 02-D2, 03-C7, 03-D6>
FP110
FP115
FP206
< 01-F3 >
4
FP109
FP125
IP71
PS1
GP1SQ59C
C24
100p, 50V
FP108
FP122
< 01-F3 > AFXT
3
FP107
FB79
R37
IP21
FP106
FB78
7
C308
470p, 50V
IP22
FP105
FP114
6
C301
470p, 50V
10, 1/10W
IP72
IP69
FB75
4
10, 1/10W
C303
470p, 50V
R36
39K, 1/10W
FB74
3
8
R308
FP104
FP132
FP133
Vsen
FP134
FP135
< 03-F2, 03-E4,03-E6, 03-D3>
R78
39K, 1/10W
R79
390, 1/10W
FP70
< 01-B6 >
RRS
2
D1
3
D2
4
D3
5
D4
6
D5
7
D6
8
D7
9
D8
1
STB
11
BUSY
10
ACK
12
PE
13
SLCT
BLM21A1025 x 8
IP73
R303
FP103
E
2
C302
470p, 50V
< 03-D6, 02-D2, 03-B7>
FB73
R83
1K, 1/10W
10, 1/10W
C300
470p, 50V
< 01-F3 >
FB72
FP102
Vif
IP75
R301
FB71
BLM21A1025
< 03-F2, 03-E4,03-E6, 03-B3>
R300
BUSY
FB70
FP101
FB82
< 02-D2, 03-C7, 03-B7>
R87
47K, 1/10W
FB69
R55
1K, 1/10W
C27
470p, 50V
FP77
FB68
1K, 1/10W
FN1A4P
2
FB67
RA4
3.3K, 1/8W
Vif
R54
100, 1/10W
1
FB66
Vif
R57
FP136
32
FAULT
36
SEL IN
14
AFXT
31
INT
D
15
16
17
18
19
20
C
21
22
23
24
25
26
27
28
29
30
33
B
34
35
3.3K, 1/10W
Centronics I/F
IP24
R80
IP23
10K, 1/10W
1
3
PS2
EE-SX1055
C37
100p, 50V
2
4
Pick-up Roller Sensor
A
5-29
Part 5: Maintenance
BJC-1000
8
7
6
5
4
3
2
1
LOGIC BOARD 04
F
CNPS
J4
+5V
1
Cange VH
Carriage Motor
2
10K,1/10W
FP189
Q21
2SJ377(2-7B1B)
SD
1
2
FP190
FP210
2
VM
R100
IP93
1
VH
FP185
FP187
FP186
FP188
CRA
CRA
CRB
CRB
1
2
3
4
APPROX.11
phase
FU3
CNCR
VH(27.6V)
FP211
2
C218
330 ,35V
2
J2
FP85
IP20
1
C205
0.01 ,50V
+
C224
0.01 ,50V
1
2
+
1
C215
100 ,35V
1
1
FP209
4
2
NC 3
ZD100
RD6.8SB3
2
3
+5V
LM13
3
G
R414
100K,1/10W
FP86
FP87
FB1
GND
FP184
R415
FP183
GND
3
VHC
<01-B6>
IP18
Q20
1 FA1L4M
VM-G
2
1
3
3
4
0.51,1/4W
R400
4
5
VM
6
FP97
7
VM-GND
+
8
VM-G
4.7K,1/10W
C220
100 ,35V
9
C222
10
0.047 ,50V
11
12
+5V
CNLF
Paper Feed Motor
1
LFA
2
VM
3
LFB
4
LFB
5
VM-G
FP200
FP201
FP78
FP79
FP80
LFA
R405 2.2K,1/10W
LFA
FP83
R406 2.2K,1/10W
IP59
2
3
IP58
4
5
<01-B2>
LFB
R407 2.2K,1/10W
FP82
IP57
6
7
R408 2.2K,1/10W
FP81
IP56
8
10
2
3
4
5
LFA
LFA
16
C212
0.1 ,50V
+5V
17
18
VM
19
LFB
R402
LFB
VM-G
21
NC1
NC4
42
P.GND
NC3
41
OUT1A
OUT2A
OUT1B
OUT2B
39
RS2
38
RS1
S1
S2
40
37
VM2
36
GND1
GND14
35
GND2
GND13
GND3
GND12
GND4
GND11
GND5
GND10
GND6
GND9
GND7
GND8
VM1
VCC
PH1A
PH1B
NC2
PH2A
PH2B
STBY
FREF
VREF
REGOUT
I0-1
I1-1
I0-2
I1-2
IP64
D
IP63
0.51,1/4W
R401
FP98
VM-G
34
C223
0.047 ,50V
33
32
31
30
29
28
VM-G
IP62
C
27
26
IP66
25
24
23
IP61
C211
390p,50V
22
FP95
ZD12
RD2.4SB
E
VM-G
ZD11
RD3.3SB1
B
C
20
470,1/10W
<01-B6>
3
CHSMI
B
C
FP96
2
0
IP103
1
Q25
FA1L4M
B
VM-G
C
B
C
E
VM-G
<01-B7>
Paper Feed Motor Drivre
2
FP89
3
FP90
1
FP91
B
FP92
CR[3....0]
<01-A2> CRSTB
<01-B6> ISA
<01-A6> ISB
R412
R411 4.7K,1/10W
9
R410 4.7K,1/10W
LFB
R409 4.7K,1/10W
<01-B2>
1
14
15
STA481A
1
<01-B2>
VM-G
IC6
APPROX.
67 phase
<01-A2>
13
J3
FP84
E
M54679FP
IP60
2
LFA
CRB
IC12
1
VH-GND
CRB
4
+
C221
100 ,35V
2
R416
4.7K,1/10W
LOGIC-GND
3
Carriage Motor Driver
IP19
LOGIC-GND
E
CRA
CRA
100K,1/10W
FP208
5
FP88
1042P
VM
1
2
FP93
FP94
VM-G
A
5-30
The printing paper contains
70% waste paper.
PRINTED IN JAPAN (IMPRIME AU JAPON)
CANON INC.