Canon Color Bubble Jet BJC-5000 Series User manual

QY8-1359-000
REVISION 0
AUGUST. 1998
COPYRIGHT © 1998 CANON INC. CANON BJC-5000 0898 SC 0.55-0 PRINTED IN JAPAN (IMPRIME AU JAPON)

0898 SC 0.55-0

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 editions of
this manual.
The following paragraph does not apply to any countries where such provisions are
inconsistent with local law.
Trademarks
The product names and company names described in this manual are the registered trademarks of
the individual companies.
Copyright
This manual is copyrighted with all rights reserved. Under the copyright laws, this manual may not
be copied, reproduced or translated into another language, in whole or in part, without the written
consent of Canon Inc., 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, Japan
This manual was produced on an Apple Macintosh™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 four 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 and specification.
Part 3: Operating Instructions
This section explains how to operate the unit properly. Information required about
installation and service made.
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.
Procedures for assembly/disassembly are not given in this manual.
See the illustrations in the separate Parts Catalog.
REF.
I

II. TABLE OF CONTENTS
Page Part 1: Safety and Precautions
1 - 1 1. SAFETY PRECAUTIONS
1 - 1 1.1 Moving Parts
1 - 2 1.2 Ink Stains
1 - 2 1.2.1 Ink path
1 - 3 1.2.2 Ink mist
1 - 4 1.3 BJ Cartridge Heat-Up
1 - 5 2. MACHINE PRECAUTIONS
1 - 5 2.1 Handling BJ Cartridges
1 - 5 2.1.1 Unpacking the BJ cartridge
1 - 5 2.1.2 Preventing clogged nozzles
1 - 6 2.1.3 Power on/off
1 - 6 2.1.4 When not using the printer
1 - 6 2.1.5 Ink electroconductivity
1 - 7 2.2 Handling Ink Cartridges (Color BJ Cartridge)
1 - 7 2.2.1 Unpacking the ink cartridge
1 - 7 2.2.2 Protecting the ink cartridge
1 - 8 2.3 Printer Precautions
1 - 8 2.3.1 Preventing deformation of the spur tip
1 - 8 2.3.2 Static electricity damage prevention
1 - 9 2.3.3 Ink leakage prevention
1 -10 3. MAINTENANCE SERVICE PRECAUTIONS
1 -10 3.1 EEPROM Data Precautions
1 -11 3.2 Static Electricity Precautions
1 -12 3.3 Disassembly and Assembly Precautions
1 -12 3.4 Built-In Self-Diagnosis
Part 2: Product Specifications
2 - 1 1. PRODUCT OUTLINE
2 - 1 1.1 Product Outline
2 - 2 1.2 Features
2 - 3 1.3 BJ Cartridge
2 - 3 1.3.1 Color BJ cartridge (BC-21e)
2 - 3 1.3.2 Black BJ cartridge (BC-23)
2 - 4 1.3.3 Black BJ cartridge (BC-20) (reference)
2 - 4 1.3.4 Photo BJ cartridge (BC-22e Photo)
2 - 5 1.4 Dual Cartridge System
2 - 5 1.5 BJ Cartridge Container
2 - 6 1.6 Consumables
2 - 6 1.6.1 BJ cartridge (Black, Color, Photo)
2 - 6 1.6.2 Ink cartridge (BC-21e Color BJ Cartridge only)
2 - 7 2. SPECIFICATIONS
2 - 7 2.1 Printer Specifications
2 - 9 2.2 Paper Specifications
2 - 9 2.2.1 Paper size
2 - 9 2.2.2 Paper type
2 -10 2.2.3 Cut sheet feeder sheet loading capacity
2 -11 2.2.4 Printing area
2 -12 2.3 Interface Specifications
II

Page Part 3: Operating Instructions
3 - 1 1. PRINTER SETUP
3 - 1 1.1 Unpacking and Inspection
3 - 2 1.2 Site Selection
3 - 3 1.3 Setup Procedure
3 - 3 1.3.1 Connecting the interface cable
3 - 3 1.3.2 Connecting the AC power cord
3 - 4 1.3.3 Turning on the printer
3 - 4 1.3.4 Installing the BJ cartridge
3 - 7 1.3.5 Replacing the ink cartridge
3 - 8 1.3.6 BJ cartridge container
3 - 9 1.4 Turning the Printer On/Off
3 - 9 1.4.1 Turning the printer on
3 - 9 1.4.2 Turning the printer off
3 -10 1.5 Paper Settings
3 -11 1.6 Banner Print
3 -12 1.7 Names of Parts and Their Functions
3 -13 2. TRANSPORTING THE PRINTER
3 -13 2.1 Carrying the Printer
3 -13 2.2 Transporting the Printer
3 -14 3. PRINTER SERVICING FUNCTION
3 -14 3.1 Error Indications
3 -16 3.2 Cleaning the BJ Cartridge
3 -17 3.3 Self-Test Printout
3 -18 3.4 Service Mode
3 -20 3.5 Service Mode Print Sample
3 -20 3.5.1 Ripple pattern
3 -20 3.5.2 Service information printing
Part 4: Technical Reference
4 - 1 1. OVERVIEW
4 - 1 1.1 Printer Block Diagram
4 - 2 1.2 Initialization Sequence Flowchart
4 - 3 1.3 Print Signal Flow
4 - 3 1.3.1 Data between host computer and printer
4 - 3 1.3.2 Print signal flow in the printer
4 - 4 1.4 Print Drive
4 - 4 1.4.1 Print drive control
4 - 6 1.5 Power-Off Sequence Flowchart
4 - 7 2. FIRMWARE
4 - 7 2.1 Interface
4 - 7 2.1.1 Compatible mode
4 - 8 2.1.2 Nibble mode
4 - 9 2.1.3 ECP mode
4 -11 2.2 Printing System
4 -11 2.3 Printing Modes
4 -11 2.3.1 Printing mode
4 -11 2.3.2 Photo print mode
4 -11 2.3.3 Multi-drop print mode
4 -13 2.4 Cartridge Automatic Adjustment Function
4 -13 2.4.1 Automatic correction of head nozzle alignment
4 -13 2.4.2 Automatic density correction of left/right cartridge
4 -14 2.5 Data Separation Function
4 -14 2.6 Ink Smear Control
III

Page
4 -14 2.7 Head Overheating Protection Control
4 -14 2.8 Auto Power-Off
4 -15 3. PRINTER MECHANICAL SYSTEM
4 -15 3.1 Overview
4 -15 3.1.1 Mechanical components
4 -17 3.2 BJ Cartridge
4 -17 3.2.1 Black BJ cartridge structure
4 -18 3.2.2 Color BJ cartridge structure
4 -19 3.2.3 Photo BJ cartridge structure
4 -20 3.2.4 Bubble head unit structure
4 -26 3.3 Purge Unit
4 -26 3.3.1 Purge unit functions
4 -27 3.3.2 Purge unit structure
4 -29 3.4 Carriage
4 -29 3.4.1 Carriage function
4 -30 3.4.2 Carriage structure
4 -32 3.5 Paper Feed/Cut Sheet Feeder
4 -32 3.5.1 Paper feed/cut sheet feeder function
4 -34 3.5.2 Sheet feeder structure
4 -36 4. PRINTER ELECTRICAL SYSTEM
4 -36 4.1 Overview of Printer Electrical System
4 -37 4.2 Logic Section
4 -37 4.2.1 Logic section block diagram
4 -38 4.2.2 Logic section components
4 -41 5. SENSOR FUNCTIONS
4 -41 5.1 Pick-Up Roller Sensor
4 -41 5.2 Paper End Sensor
4 -42 5.3 Home Position Sensor
4 -42 5.4 Purge Sensor
4 -42 5.5 Cover Open Sensor
4 -42 5.6 Printer Temperature Sensor
4 -42 5.7 Head Temperature Sensor
4 -42 5.8 Auto-Alignment Sensor
4 -43 5.9 Waste Ink Amount Detection
Part 5: Maintenance
5 - 1 1. Maintenance
5 - 1 1.1 Parts for Regular Replacement
5 - 1 1.2 Consumables
5 - 1 1.3 Periodic Maintenance
5 - 2 2. SERVICE TOOLS
5 - 2 2.1 List of Tools
5 - 3 3. GREASE APPLICATION
5 - 4 4. DISASSEMBLY AND REASSEMBLY
5 - 4 4.1 Disassembly and Reassembly
5 - 4 4.2 Disassembly and Reassembly Cautions
5 - 4 4.2.1 Fastening screws of idler pulley assembly
5 - 5 4.2.2 Carriage guide frame installation
5 - 6 4.2.3 Unlocking the carriage lock
5 - 6 4.3 Logic Board and Waste Ink Absorber Replacement Cautions
5 - 6 4.3.1 Logic board replacement cautions
5 - 7 4.3.2 Cautions after replacing the waste ink absorber
IV

Page
5 - 8 5. ADJUSTMENTS
5 - 8 5.1 Adjustment Point
5 - 8 5.2 When Adjustment is Required
5 - 8 5.2.1 Tools required for adjustment
5 - 9 5.3 Adjustment Procedure
5 - 9 5.3.1 Preparation
5 -10 5.3.2 Adjustment
5 -12 6. TROUBLESHOOTING
5 -12 6.1 Troubleshooting
5 -12 6.1.1 Overview
5 -12 6.1.2 Troubleshooting cautions
5 -14 6.2 Error Condition Diagnostics
5 -14 6.2.1 Diagnostic flowcharts
5 -17 6.2.2 Error recovery
5 -34 7. LOCATION AND SIGNAL ASSIGNMENT
5 -34 7.1 Logic Board
5 -37 8. CIRCUIT DIAGRAMS
5 -37 8.1 Parts Layout
5 -37 8.1.1 Logic board
5 -39 8.2 Circuit Diagrams
V

III. ILLUSTRATION INDEX
Page
1- 1 Figure 1- 1 Moving Parts of the Printer
1- 2 Figure 1- 2 Ink Path
1- 3 Figure 1- 3 Ink Path of the BJ Cartridge
1- 3 Figure 1- 4 Ink Mist
1- 4 Figure 1- 5 BJ Cartridge Aluminum Plate
1- 5 Figure 1- 6 Removing the Head Cap and Protective Tape
1- 6 Figure 1- 7 BJ Cartridge
1- 7 Figure 1- 8 Removing the Ink Cartridge Cap
1- 7 Figure 1- 9 Ink Outlets (Ink Cartridge)
1- 8 Figure 1-10 Spurs
1- 8 Figure 1-11 Electrical Contacts of Carriage Ribbon Cable
1- 9 Figure 1-12 Capping Position
1-11 Figure 1-13 Electrical System of Printer
1-12 Figure 1-14 Releasing the Plastic Hooks
2- 1 Figure 2- 1 Printer Appearance
2- 3 Figure 2- 2 Color BJ Cartridge (BC-21e)
2- 3 Figure 2- 3 Black BJ Cartridge (BC-23)
2- 4 Figure 2- 4 Black BJ Cartridge (BC-20 [reference])
2- 4 Figure 2- 5 Photo BJ Cartridge (BC-22e Photo)
2- 5 Figure 2- 6 BJ Cartridge Container
2- 6 Figure 2- 7 BJ Cartridges
2- 8 Figure 2- 8 Ink Cartridges
2-11 Figure 2- 9 Printing Area
2-17 Figure 2-10 Timing Chart (Compatible Mode)
2-18 Figure 2-11 Timing Chart (Nibble Mode)
2-18 Figure 2-12 Timing Chart (ECP Mode)
2-19 Figure 2-13 Timing Chart (ECP Mode/Reverse Mode)
3- 1 Figure 3- 1 Unpacking
3- 2 Figure 3- 2 Printer Site Selection Dimensions
3- 3 Figure 3- 3 Connecting the Interface Cable
3- 3 Figure 3- 4 Connecting the AC Power Cord
3- 4 Figure 3- 5 Removing the BJ Cartridge Protectors
3- 5 Figure 3- 6 BJ Cartridge Handling Precautions
3- 5 Figure 3- 7 Installing the BJ Cartridge
3- 7 Figure 3- 8 Removing the Ink Cartridge
3- 7 Figure 3- 9 Removing the Ink Cartridge Cap
3- 8 Figure 3-10 BJ Cartridge Container
3- 9 Figure 3-11 Caution! Do not unplug the AC power cord
without pressing the POWER button first
3-11 Figure 3-12 Banner Print
3-12 Figure 3-13 Names of Parts and Their Functions
3-13 Figure 3-14 Carriage Capping Position
3-14 Figure 3-15 Control Panel
3-17 Figure 3-16 Self-Test Printout (Sample)
3-20 Figure 3-17 Ripple Pattern Sample
3-20 Figure 3-18 Service Information Printing Sample
4- 1 Figure 4- 1 Printer Block Diagram
4- 2 Figure 4- 2 Initialization Sequence Flowchart
4- 3 Figure 4- 3 Print Signal Flow
4- 4 Figure 4- 4 Printing Sequence (Black BJ Cartridge/Standard Mode)
4- 5 Figure 4- 5 Print Signals
VI

Page
4- 6 Figure 4- 6 Power-Off Sequence Flowchart
4- 7 Figure 4- 7 Interface Timing (Compatible Mode)
4- 8 Figure 4- 8 Interface Timing (Nibble Mode)
4- 9 Figure 4- 9 Interface Timing (ECP Mode)
4-10 Figure 4-10 Timing Chart (ECP Mode/Reverse Mode)
4-15 Figure 4-11 Mechanical System of Printer
4-17 Figure 4-12 Black BJ Cartridge Structure
4-18 Figure 4-13 Color BJ Cartridge Structure
4-19 Figure 4-14 Photo BJ Cartridge Structure
4-20 Figure 4-15 Bubble Jet Nozzles (Partial View)
4-21 Figure 4-16 Nozzle Arrangement
4-21 Figure 4-17 Contact Pad
4-23 Figure 4-18 Bubble Jet Head Driver Block Diagram (Black BJ Cartridge)
4-23 Figure 4-19 Bubble Jet Head Driver Block Diagram
(Color/Photo BJ Cartridge) (Multi-Drop)
4-28 Figure 4-20 Purge Unit
4-29 Figure 4-21 Carriage
4-31 Figure 4-22 Paper Feed Motor Power Switching
4-32 Figure 4-23 Paper Feed
4-33 Figure 4-24 Automatic Printhead and Paper Clearance Adjustment
4-35 Figure 4-25 Paper Separator
4-36 Figure 4-26 Printer Electrical System
4-37 Figure 4-27 Logic Board Block Diagram
4-37 Figure 4-28 Printer Block Diagram
4-40 Figure 4-29 Motor-Driving Circuit
4-41 Figure 4-30 Sensors
5- 3 Figure 5- 1 Grease Application Points
5- 4 Figure 5- 2 Idler Pulley Assembly
5- 5 Figure 5- 3 Carriage Guide Frame
5- 6 Figure 5- 4 Unlocking the Carriage Lock
5- 7 Figure 5- 5 Waste Ink Absorber
5- 8 Figure 5- 6 Head Gap Adjustment
5- 9 Figure 5- 7 Adjustment Preparation
5-10 Figure 5- 8 Head Gap Adjustment (1)
5-11 Figure 5- 9 Head Gap Adjustment (2)
5-34 Figure 5-10 Logic Board
5-37 Figure 5-11 Logic Board (Top View)
5-38 Figure 5-12 Logic Board (Bottom View)
VII

IV. TABLE INDEX
Page
3-10 Table 3-1 Printer Paper Setting
3-14 Table 3-2 Error Indications
3-18 Table 3-3 Service Mode
4-12 Table 4-1 Printing Modes and Driving Method
4-22 Table 4-2 List of BJ Cartridge Signal Contacts
4-25 Table 4-3 Head Installation Status and Signal Detection
4-26 Table 4-4 Ink Consumption During Cleaning (as a Guideline)
4-43 Table 4-5 List of Sensor Functions
5-8 Table 5-1 Tools Required for Head Gap Adjustment
VIII

Page
1 - 1 1. SAFETY PRECAUTIONS
1 - 1 1.1 Moving Parts
1 - 2 1.2 Ink Stains
1 - 4 1.3 BJ Cartridge Heat-Up
1 - 5 2. MACHINE PRECAUTIONS
1 - 5 2.1 Handling BJ Cartridges
1 - 7 2.2 Handling Ink Cartridges (Color BJ Cartridge)
1 - 8 2.3 Printer Precautions
1 -10 3. MAINTENANCE SERVICE PRECAUTIONS
1 -10 3.1 EEPROM Data Precautions
1 -11 3.2 Static Electricity Precautions
1 -12 3.3 Disassembly and Assembly Precautions
1 -12 3.4 Built-In Self-Diagnosis
Part 1
SAFETY AND
PRECAUTIONS

1. SAFETY PRECAUTIONS
1.1 Moving Parts
Be careful not to get fingers, hair, clothing, or personal accessories caught in the
moving parts of the printer. There are several moving parts, driven by the carriage
motor and by the paper feed motor.
Moving parts driven by the carriage motor:
Carriage belt, idler pulley, and carriage.
Moving parts driven by the paper feed motor:
Feed roller, pressure rollers, spurs, pick-up roller, slow down gear, eject roller, and
transmission roller.
Also note that the spurs are made of metal and have sharp edges. Do not touch the
spurs, especially with bare hands. Serious injury could be caused by touching the
spurs unintentionally.
Part 1: Safety and Precautions
BJC-5000
1-1
Figure 1-1 Moving Parts of the Printer
Eject Roller
Feed Roller
Pressure Rollers
Paper Feed Motor
Slow Down Gear
Idler Pulley
Carriage
Carriage Belt
Carriage Motor
Pick-Up Roller
Transmission Roller
Spurs

1.2 Ink Stains
1.2.1 Ink path
Do not touch the ink path during repairs or maintenance to avoid getting ink stains on
the printer, work table, hands, and clothing.
The ink flow path consists of the BJ cartridge nozzles, head cap, head wiper,
maintenance jet receiving section, waste ink tube, and waste ink absorber.
The ink flow path of the color BJ cartridges consists of ink outlets and joint pipes. Do
not touch the ink flow path also, to avoid ink stains.
When the purge unit is removed, waste ink could spill out from the unit’s waste ink
flow path. When repairing or replacing this unit, stop up the waste ink flow path with
a paper towel to prevent the ink from spilling out.
1-2
Figure 1-2 Ink Path
Caution!
Although the ink is non-toxic, it contains organic solvents.
BC-23: Diethylenglycol 111-46-5, glycerin 56-81-5
BC-21e: Isopropyl alcohol 67-63-0, glycerin 56-81-5
BC-22e Photo: Isopropyl alcohol 67-63-0, glycerin 56-81-5, ethylenglycol 107-21-1
BC-20 (reference): Isopropyl alcohol 67-63-0, glycerin 56-81-5, ethylenglycol107-21-1
Never get ink in your eyes and mouth. If any ink should get into your eyes, wash
them out with plenty of water and consult a doctor. If a large quantity of ink is
swallowed accidentally, consult a doctor immediately. Provide the doctor with the
information printed on the BJ cartridge package or label. Since the ink contains
dyes, any ink stain on clothing, etc. shall be permanent.
Carriage
BJ Cartridge
Head Wiper
Waste Ink Absorber
Maintenance Jet
Receiving Section
Waste Ink Tube
Purge Unit
Part 1: Safety and Precautions
BJC-5000

1.2.2 Ink mist
The BJ cartridge ejects ink onto the paper to print. During prolonged or heavy-duty
use of the printer, small amounts of ink mist which splatter off the printing paper
during printing can be deposited on the inside of the front cover and platen . Ink on
these parts can cause stains on the printing paper, hands, or clothing. Wipe the ink
off these parts periodically with a soft moist cloth.
Part 1: Safety and Precautions
BJC-5000
1-3
Figure 1-3 Ink Path of the BJ Cartridge
Black BJ Cartridge Color BJ Cartridge
Nozzles
Ink Outlet
Ink Outlet
Joint Pipe
Nozzles Nozzles
Joint Pipe
Figure 1-4 Ink Mist
Front Cover
Platen

1.3 BJ Cartridge Heat-Up
Do not touch the aluminum plate of the BJ cartridge. This aluminum plate heats up
during printing. It will become very hot during prolonged and continuous printing
sessions or when printing is attempted even after the cartridge has run out of ink.
This printer is provided with a protective mechanism for the overheating of
the BJ cartridge. A head temperature (diode) sensor in the BJ cartridge
detects the temperature levels for activating the protection mechanism.
To prevent the user from touching the hot aluminum plate of the head
when the head temperature becomes high, the carriage will not move to
the cartridge replacement position even when the user opens the front
cover . During this time, the printer beeps 5 times and the indicator lights
in orange. If this happens, wait for a while and then either press the
RESUME button or close the front cover once and open it again.
If the head temperature increases further, printing will be stopped due to
the head temperature error.
When the printer stops printing due to a head temperature error, follow the
required troubleshooting procedure in “ Part 5: 6, TROUBLESHOOTING” (page
5-12).
Part 1: Safety and Precautions
BJC-5000
1-4
Figure 1-5 BJ Cartridge Aluminum Plate
Aluminum Plate
Caution! High Temperature!
NOTE
REF.

2. MACHINE PRECAUTIONS
2.1 Handling BJ Cartridges
2.1.1 Unpacking the BJ cartridge
Do not unpack the BJ cartridge until it is ready to be used. Before installing the BJ
cartridge in the printer, remove the protective head caps from the nozzles and peel off
the protective tape as shown in the figure below.
Never re-use the removed protective head caps and protective tape. This could cause
printing troubles.
2.1.2 Preventing clogged nozzles
Never touch the nozzles of the BJ cartridge or wipe them with tissue paper. Any
foreign substance could easily clog the nozzles. Also, handle the inner joint pipe of the
color BJ cartridge carefully to avoid clogging it and thus blocking the ink feed.
To prevent clogging the nozzles with foreign substances and dried-out ink, install the
BJ cartridge in the printer after the head cap and protective tape are removed (so that
the printer caps the nozzles). When storing the BJ cartridge, make sure the nozzles of
the cartridge are capped or store the cartridge in the BJ cartridge container. Foreign
substances on the nozzles or dried up ink will result in poor ink suction. Never
disassemble or assemble the BJ cartridge and do not wash it.
When the nozzles are clogged, white streaks will appear across the printed
areas periodically. If this problem persists even after cleaning, replace the
BJ cartridge with a new one.
Part 1: Safety and Precautions
BJC-5000
1-5
NOTE
Color BJ Cartridge (BC-21e)
Black BJ Cartridge
(BC-23/BC-20 [reference])
12
Cap Tape
Photo BJ Cartridge (BC-22e Photo)
Figure 1-6 Removing the Head Cap and Protective Tape

Part 1: Safety and Precautions
BJC-5000
1-6
2.1.3 Power on/off
When the printer is turned off with the POWER button , the printer automatically caps
the nozzles of the BJ cartridge for their protection and to prevent ink leakage.
If the AC power cord of the AC adapter is unplugged unintentionally and the printer is
turned off without pressing the POWER button , the nozzles may not be capped. In
such cases, plug in the AC power cord of the AC adapter, turn on the power of the
printer, and then press the POWER button to turn it off again.
If the nozzles are not capped properly, the ink may either dry out and clog
the nozzles or leak out.
2.1.4 When not using the printer
Leave the BJ cartridge in the printer or store it in the BJ cartridge container when the
printer is not in use. Also keep the BJ cartridge installed in the printer or store it in
the BJ cartridge container while carrying, transporting, or storing the printer.
If the BJ cartridge is removed from the printer and left lying about,
printing defects may occur when it is used again due to clogging of nozzles
and dried-out ink. If the BJ cartridge is removed to relocate the printer,
ink could leak out from the cap section.
2.1.5 Ink electroconductivity
The ink in the BJ cartridge is electroconductive. If the ink leaks into the printer’s
mechanical parts, use a paper towel to wipe off completely. If the ink leaks into the
printer’s electrical parts, use a tissue paper to wipe off completely. If ink is spilled
under the IC chips on the printed circuit board (PCB) and is difficult to clean, replace
the PCB.
Do not connect the AC power cord when ink has leaked into the electrical
parts. This could damage the circuitry.
CAUTION
CAUTION
CAUTION
Black BJ Cartridge Color BJ Cartridge
Nozzles
Ink Outlet
Ink Outlet
Joint Pipe
Nozzles Nozzles
Joint Pipe
Figure 1-7 BJ Cartridge