Canon BJC-2000 Service Manual
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Canon BJC-2000 Service Manual

Canon BJC-2000 Service Manual

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REVISION 0
QY8-1362-000
OCT. 1998
COPYRIGHT
1998 CANON INC. CANON BJC-2000 1098 SC 0.40-0 PRINTED IN JAPAN (IMPRIME AU JAPON)

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  • Page 1 REVISION 0 QY8-1362-000 OCT. 1998 COPYRIGHT 1998 CANON INC. CANON BJC-2000 1098 SC 0.40-0 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 2 1098 SC 0.40-0...
  • Page 4 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.
  • Page 5 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 Part 2: Product Specifications This section outlines and specification.

  • Page 6: Table Of Contents

    II. TABLE OF CONTENTS Part 1: Safety and Precautions Page 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...
  • Page 7 1.3.1 Printing drive control 4 - 5 2. FIRMWARE 4 - 5 2.1 720 dpi Printing Feature 4 - 5 2.1.1 Canon extended mode 4 - 6 2.2 Printing Modes 4 - 6 2.2.1 Printing mode 4 - 6 2.2.2 Photo print mode 4 - 6 2.2.3 Multi-drop print mode...
  • Page 8 Page 4 -22 3.5.1 Outline of the paper feed 4 -23 3.5.2 Structure of the sheet feeder 4 -24 4. PRINTER ELECTRICAL SYSTEM 4 -24 4.1 Overview 4 -25 4.2 Logic Section 4 -25 4.2.1 Logic section block diagram 4 -26 4.2.2 Logic section components 4 -28 5.
  • Page 9 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...
  • Page 10 Page 4 -14 Figure 4- 12 Black BJ Cartridge Block Diagram 4 -15 Figure 4- 13 Color (Multi-Drop)/Photo (Multi-Drop) BJ Cartridge Block Diagram 4 -18 Figure 4- 14 Purge Unit 4 -19 Figure 4- 15 Carriage 4 -20 Figure 4- 16 Paper Thickness Adjustment 4 -21 Figure 4- 17...
  • Page 11 IV. TABLE INDEX Page 3 -11 TABLE 3- 1 QUICK REFERENCE FOR SETTING 3 -15 TABLE 3- 2 ERROR INDICATIONS 3 -19 TABLE 3- 3 DEFAULT SETTING WHEN RESETTING THE EEPROM 4 - 7 TABLE 4- 1 PRINTING MODES AND HEATING METHODS 4 -16 TABLE 4- 2 HEAD INSTALLATION STATUS AND SIGNAL DETECTION...
  • Page 12 This page intentionally left blank VIII...

  • Page 13: Part 1: Safety And Precautions

    Part 1 SAFETY AND PRECAUTIONS 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 Precautions for Handling BJ Cartridges 1 - 6 2.2 Printer Precautions...

  • Page 15: Safety Precautions

    BJC-2000 Part 1: Safety and Precautions 1. SAFETY PRECAUTIONS 1.1 Moving Parts The moving parts of the printer are shown below. They include the carriage belt, idler roller, carriage, slow down gear, paper feed roller, pressure roller, eject roller, spurs, and pick-up roller.

  • Page 16: Ink Stains

    Part 1: Safety and Precautions BJC-2000 1.2 Ink Stains 1.2.1 Ink path Do not touch the ink path while servicing as the ink can stain hands, work table, clothing, etc. The ink path consists of the BJ cartridge nozzles, head cap, head wiper, maintenance jet receiving section, and waste ink absorber.

  • Page 17: Ink Mist

    BJC-2000 Part 1: Safety and Precautions Black BJ Cartridge Color BJ Cartridge Color Ink Cartridge Ink Outlet Nozzles Black Ink Cartridge Joint Pipe Ink Outlet Nozzles Joint Pipe Figure 1-3 Ink Path of the BJ Cartridge 1.2.2 Ink mist The BJ cartridge ejects ink onto the paper. During prolonged or heavy-duty use of the printer, small amounts of ink mist which splatter off paper during printing can contaminate the inside of the front cover and platen.

  • Page 18: Bj Cartridge Heat-Up

    Part 1: Safety and Precautions BJC-2000 1.3 BJ Cartridge Heat-Up Do not touch the BJ cartridge’s aluminum plate. The aluminum plate heats up during printing and becomes particularly hot during prolonged and continuous printing. It can overheat also if printing is continued even after the cartridge has run out of ink. Aluminum Plate Caution! High Temperature! Figure 1-5 BJ Cartridge Aluminum Plate...

  • Page 19: Machine Precautions

    BJC-2000 Part 1: Safety and Precautions 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 and 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.

  • Page 20: Printer Precautions

    Part 1: Safety and Precautions BJC-2000 2.2 Printer Precautions 2.2.1 Spur deformation prevention Do not deform the tips of the spurs. The spurs come into contact with the paper after printing. As the actual contact surface is small, any ink adhering to the spurs is minute and wiped off by the spur cleaners.

  • Page 21: Precautions For Service

    BJC-2000 Part 1: Safety and Precautions 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.

  • Page 22: Static Electricity Precautions

    Part 1: Safety and Precautions BJC-2000 3.2 Static Electricity Precautions The static charge accumulated from clothing, etc., can damage electrical components. To discharge any built-up static electricity, touch a metallic object that is grounded. Be sure to do this before disassembling the printer for servicing. Before discharging the static charge, do not touch the electrical contacts on the logic board and on the carriage ribbon cable (see Figure 1-7 ) while the carriage ribbon cable is connected to the logic board.

  • Page 23: Part 2: Product Specifications

    Part 2 PRODUCT SPECIFICATIONS Page 2 - 1 1. PRODUCT OUTLINE 2 - 1 1.1 Product Outline 2 - 2 1.2 Features 2 - 3 1.3 BJ Cartridge 2 - 4 1.4 BJ Cartridge Container 2 - 4 1.5 Consumables 2 - 5 1.6 Option 2 - 6...

  • Page 25: Product Outline

    BJC-2000 Part 2: Product Specifications 1. PRODUCT OUTLINE 1.1 Product Outline This printer is a value-added, Windows-based, full-color bubble jet desktop printer that has realized high-quality image printing through the implementation of the PhotoRealism concept. The printer has achieved high-quality printing by using color BJ cartridges/photo BJ cartridges in which "drop modulation technology"...

  • Page 26: Features

    New AC adapter High quality printing of 720 360 dpi (in both monochrome and color) Windows exclusive printer (used with the Canon original printer driver) Drop modulation technology adopted Color & Photo BJ cartridges Banner printing capability New image processing technology "Image Optimizer" supported by the driver.

  • Page 27: Bj Cartridge

    BJC-2000 Part 2: Product Specifications 1.3 BJ Cartridge 1.3.1 Color BJ cartridge (Multi-Drop) The disposable color BJ cartridge is comprised of a print head and two replaceable ink cartridges (black and color). When the ink runs out, or more than 6 months elapse after the cartridge has been removed from its package, or if the print quality does not improve even after cleaning the head over five times, replace the ink cartridge.

  • Page 28: Bj Cartridge Container

    Part 2: Product Specifications BJC-2000 1.4 BJ Cartridge Container The cartridge container is for storing unused BJ cartridges black, color, and photo, to protect the head from damage. When storing a BJ cartridge in this container, be sure to close the cover. When storing a color BJ cartridge, do not remove the ink cartridges. The BJ cartridge containers can be linked together Figure 2-3 BJ Cartridge Container 1.5 Consumables...

  • Page 29: Option

    BJC-2000 Part 2: Product Specifications 1.6 Option 1.6.1 Color image scanner cartridge This printer can be used as a color scanner when a scanner cartridge is installed. To help stabilize the output of the LED which provides the scanner cartridge with its light source, when the scanner cartridge is just installed or when it is not engaged in reading operation, the printer makes the LED lit to pre-heat the scanner cartridge or keep it warmed up.

  • Page 30: Specifications

    BPF (Canon Back Print Film BF-102) Glossy paper (Canon Glossy Photo Paper GP-201) Glossy film (Canon High Glossy Film HG-101) Color Plain Paper (Canon High Resolution Paper HR-101) Color Plain Paper (Canon Bubble Jet Paper LC-301) Fabric (Canon Fabric Sheet FS-101)
  • Page 31 Max. 203.2 mm (8") 11. Line feed speed 150 ms/line (128/360" line feed) 12. Built in print control mode Canon extended mode is supported when using the Canon original driver. 13. Receive buffer 31 KBytes 14. Interface IEEE1284 compatible 8-bit parallel 15.
  • Page 32 Part 2: Product Specifications BJC-2000 16. Detection functions Paper out Available Presence of BJ cartridge Available Waste ink amount Available Paper width None Distinction of cartridge Available Ink out None Distinction of scanner Available BJ cartridge or scanner mismatch Available 17.

  • Page 33: Scanner Cartridge Specifications (Option)

    BJC-2000 BJC-2000 Part 2: Product Specifications 2.2 Scanner Cartridge Specifications (Option) 1.Type Cartridge replacement type color scanner 2. Image sensor 128 pixels in one line of CCD 3. Light source LED (RGB), (alignment of red, green, blue, green, red ; five in total) Using green LED for monochrome printing 4.

  • Page 34: Paper Specifications

    Transparencies (Canon transparency film CF-102) BPF (Canon back print film BF-102) Glossy photo paper (Canon glossy paper GP-301) High gloss film (Canon high gloss Photo Film HG-201) High resolution paper (Canon high resolution paper HR-101) T-shirt transfers (Canon T-shirt transfers TR-201)

  • Page 35: Printable Area

    BJC-2000 BJC-2000 Part 2: Product Specifications 2.3.4 Printable area 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. Printable Area Minimum 0.13" 0.13" 0.12"...

  • Page 36: Interface Specifications

    Part 2: Product Specifications BJC-2000 BJC-2000 2.4 Interface Specifications The printer's interface is designed to support compatible, nibble, and ECP mode, which conform to the bi-directional centronics interface standards (IEEE P1284). Compatible mode uses the same protocols as those protocols which conform to the conventional centronics interfaces.
  • Page 37 BJC-2000 BJC-2000 Part 2: Product Specifications 7) Input/ output signals and pin layout Compatible mode Signal Signal STROBE STROBE-GND DATA1 DATA1-GND DATA2 DATA2-GND DATA3 DATA3-GND DATA4 DATA4-GND DATA5 DATA5-GND DATA6 DATA6-GND DATA7 DATA7-GND DATA8 DATA8-GND ACKNLG ACKNLG-GND BUSY BUSY-GND P.E. INT-GND SELECT INIT...
  • Page 38 Part 2: Product Specifications BJC-2000 BJC-2000 ECP mode Signal Signal HostClk Signal Gnd Data1 IN/OUT Signal Gnd Data2 IN/OUT Signal Gnd Data3 IN/OUT Signal Gnd Data4 IN/OUT Signal Gnd Data5 IN/OUT Signal Gnd Data6 IN/OUT Signal Gnd Data7 IN/OUT Signal Gnd Data8 IN/OUT Signal Gnd...
  • Page 39 BJC-2000 BJC-2000 Part 2: Product Specifications 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.
  • Page 40 Part 2: Product Specifications BJC-2000 BJC-2000 Nibble Mode Host Clk [Input] STROBE signal 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.
  • Page 41 BJC-2000 BJC-2000 Part 2: Product Specifications 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. ECP Mode Host Clk [Input] This signal handshakes with the PeriphAck signal when data is transferred form the host computer to the printer.
  • Page 42 Part 2: Product Specifications BJC-2000 BJC-2000 Reverse Req [Input] This signal goes Low when the recovery process (data re-transmission) is taking place during data transmission from the host computer to the printer. In response to a Low Ack Reverse signal, Reverse Req signal goes High. When switching from the idle state of the forward data transmission phase to the reverse data transmission phase, i.e.
  • Page 43 BJC-2000 BJC-2000 Part 2: Product Specifications Nibble mode In nibble mode, the printer transfers data twice to the host computer in 4-bit units. The data is transferred with the PtrClk signal and HostBusy signal handshakes. After the printer confirms that the HostBusy signal is Low, it prepares 8-bit data, lowers the PtrClk signal and outputs the lower 4-bits along the control signal line.
  • Page 44 Part 2: Product Specifications BJC-2000 BJC-2000 ECP mode In ECP mode, the printer transfers data at once in 8-bit units allowing faster data transmission and reception. This mode is suitable for large data transfers such as for scanners. After the computer responds to the Low Reverse Request signal, the AckReverse signal goes Low and the data bus direction switches from the forward data transmission phase (host computer to printer) to the reverse data transmission phase (printer to host computer).

  • Page 45: Part 3: Operating Instructions

    Part 3 OPERATING INSTRUCTIONS Page 3 - 1 1. PRINTER SETUP 3 - 1 1.1 Equipment Check 3 - 2 1.2 Printer Dimensions 3 - 3 1.3 Setup Procedure 3 -10 1.4 Turning the Printer On/Off 3 -11 1.5 Paper Settings 3 -11 1.6 Banner Printing 3 -12...

  • Page 47: Printer Setup

    Part 3: Operating Instructions BJC-2000 1. PRINTER SETUP 1.1 Equipment Check After unpacking the printer, make sure the items below are included: Read This First Paper Output Tray Paper Support Documentation Power Cord BJ Cartridge Container Packing BJ Cartridge Packing Packing Tape Figure 3-1 Packaging...

  • Page 48: Printer Dimensions

    Part 3: Operating Instructions BJC-2000 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.

  • Page 49: Setup Procedure

    Part 3: Operating Instructions BJC-2000 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.
  • Page 50 Part 3: Operating Instructions BJC-2000 1.3.3 Installing the cartridge Two types of cartridges can be installed in the printer: a color 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.

  • Page 51: Installing The Cartridge

    Part 3: Operating Instructions BJC-2000 2) Installing the cartridge Open the printer’s front cover and flip up the cartridge lock lever. Insert the cartridge into the carriage and push down the cartridge lock lever to lock the cartridge in place. When the front cover is closed, the carriage moves to the capping position.

  • Page 52: Scanner Cartridge Precautions

    Part 3: Operating Instructions BJC-2000 3) Replacing the cartridge Open the printer’s front cover and the carriage moves to the replacement position. Then flip up the cartridge lock lever and remove the cartridge. Install another cartridge by following “Installing the cartridge” above. Always store an unused BJ cartridge in the BJ cartridge container.

  • Page 53: Replacing The Ink Cartridge

    Part 3: Operating Instructions BJC-2000 1.3.5 Replacing the ink cartridge When the color BJ cartridge is used, the ink cartridges can be replaced as follows: 1) When to replace the ink cartridge Replace the ink cartridge in any of the following cases: the ink has run out, the ink cartridge has been out of its package for over six months, or the print quality does not improve even after the cartridge is cleaned five times.
  • Page 54 Part 3: Operating Instructions BJC-2000 3) Installing an ink cartridge Take out the new ink cartridge from its package and remove the cap covering the ink outlets as shown in the figure. Install the ink cartridge by following the removal procedure in reverse.

  • Page 55: Bj Cartridge Container

    Part 3: Operating Instructions BJC-2000 1.3.6 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, but several containers can be joined together. The BJ cartridge container can be attached to the printer.

  • Page 56: Turning The Printer On/Off

    Part 3: Operating Instructions BJC-2000 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. If a cartridge has not been installed, the carriage will move to the cartridge replacement position.

  • Page 57: Paper Settings

    Part 3: Operating Instructions BJC-2000 1.5 Paper Settings For optimum printing, the printer has various paper settings to suit various types of paper. Set the paper selection lever before loading the paper. TABLE 3-1 QUICK REFERENCE FOR SETTING Paper Feed Flap Media Thickness Lever...

  • Page 58: Scanning Precautions

    Part 3: Operating Instructions BJC-2000 1.7 Scanning Precautions The scanning document should be placed in the scanning holder to prevent staining or scratching. Do not feed thick or bent paper. Also direct feeding of thin paper or corner-folded paper may result in paper jamming. Figure 3-14 Scanning Holder 3-12...

  • Page 59: Name Of The Parts And Their Functions

    Part 3: Operating Instructions BJC-2000 1.8 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/cm ) for automatic feeding.
  • Page 60 Part 3: Operating Instructions BJC-2000 RESET button This key has the following functions: -To recover an error, press and hold down for over two seconds. -To start cleaning the print head, press and hold down for over two seconds. -To start the nozzle check pattern, double click. Paper thickness lever Adjusts the gap between the printhead and the paper.

  • Page 61: Printer Servicing Functions

    Part 3: Operating Instructions BJC-2000 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.) Main error sentences are shown in the table below: TABLE 3-2 ERROR INDICATIONS Error...
  • Page 62 Part 3: Operating Instructions BJC-2000 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 RESET button for over two seconds). Paper feed Occurs when the paper cannot be fed properly. Cover open Occurs when the printer's front cover is open.

  • Page 63: Cleaning The Bj Cartridge

    Part 3: Operating Instructions BJC-2000 2.2 Cleaning the BJ Cartridge Press and hold the RESET 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.

  • Page 64: Service Test Print

    Part 3: Operating Instructions BJC-2000 2.3.2 Service test print On the service test print, the control ROM version, and EEPROM (IC1) data are printed, as shown below. Total Number of Pages Passed When Using Cartridge ROM Ver X.XX BC-20 LostInk XX.X% PageCount-> BK XXXXX PB XXXXX CL XXXXX VC XXXXX LD XXXXX VL XXXXX SC XXXXX CG-ROM Ver X.XX BJC-2000 Wiping XXXXXXK ManualPurge XXXXX DryTime : OFF PurgeFlag : 3Fh Door : CLOSE...

  • Page 65: Eeprom Reset

    Part 3: Operating Instructions BJC-2000 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.
  • Page 66 Part 3: Operating Instructions BJC-2000 This page intentionally left blank 3-20...

  • Page 67: Part 4: Technical Reference

    Part 4 TECHNICAL REFERENCE Page 4 - 1 1. OVERVIEW 4 - 1 1.1 Printer Diagram 4 - 2 1.2 Print Signal Flow 4 - 3 1.3 Print Drive 4 - 5 2. FIRMWARE 4 - 5 2.1 720 dpi Printing/Smoothing Feature 4 - 6 2.2 Printing Modes 4 - 8...

  • Page 69: Overview

    Part 4: Technical Reference BJC-2000 1. OVERVIEW 1.1 Printer Diagram Cartridge · BJ Cartridge/Scanner Cartridge Paper Feed Motor · Home position sensor Carriage Motor Logic Board Paper Feed Carriage Motor Driver Motor Driver (+24.0VDC) MPU & Printer Controller (+5VDC) DRAM EEPROM Control ROM Figure 4-1 Printer Diagram...

  • Page 70: Print Signal Flow

    Part 4: Technical Reference BJC-2000 1.2 Print Signal Flow The print signal flow from when the printer receives the print data to when printing is executed is described below. a) The printing information, including control signals output by the host computer, is loaded through the parallel interface into the MPU &...

  • Page 71: Print Drive

    Part 4: Technical Reference BJC-2000 1.3 Print Drive To eject ink from the head for printing, the printer outputs control signals from the printer controller 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.
  • Page 72 Part 4: Technical Reference BJC-2000 b) Color BJ Cartridge (Multi-Drop) Drive Control The multi-drop type color BJ cartridge's printhead has 136 nozzles and each nozzle has two heaters located one in front of the other. The printing operation using this multi-drop type color BJ cartridge is (dependent/influenced) by how these heaters are controlled.

  • Page 73: Firmware

    2. FIRMWARE 2.1 720 dpi Printing Feature 2.1.1 Canon extended mode In Canon extended mode, the printer driver creates 720 dpi data for the horizontal direction and sends it to the printer, allowing the printer to achieve high-quality printing. With a black BJ cartridge installed, the printer driver smoothes the printed character’s edges to 720 dpi along the horizontal direction.

  • Page 74: Printing Modes

    When a color cartridge or a photo color cartridge using drop modulation technology is installed, the Canon original driver must be used. By selecting a drop modulation mode such as fine or photo mode, large and small ink droplets can be printed. When large and small dots are used efficiently, the granularity of the light areas can be improved.
  • Page 75 Part 4: Technical Reference BJC-2000 TABLE 4-1 PRINTING MODES AND HEATING METHODS With a Black BJ Cartridge Carriage Printing Mode Number of Nozzles Heat Frequency [ Movement Bk-HQ 1 pass 128 nozzles 6.51KHz [6.51KHz (13.02KHz)] Bk-Fine1 4 passes 32 nozzles 6.51KHz [6.51KHz (13.02KHz)] Bk-Fine2 4 passes...

  • Page 76: Optimum Printing Direction Control

    Part 4: Technical Reference BJC-2000 2.3 Optimum Printing Direction Control To prevent vertical misalignment of printed characters, etc., when printing 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 feed 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.

  • Page 77: Printer Mechanical System

    Part 4: Technical Reference BJC-2000 3. PRINTER MECHANICAL SYSTEM 3.1 Overview Carriage Sheet Feeder BJ Cartridge Paper Feed Section Purge Unit Figure 4-6 Printer’s Mechanical Configuration This section explains the printer’s mechanical components. 3.1.1 Mechanical components 1) BJ cartridge The printer comes with three types of BJ cartridges: black, color, and photo. The user installs the black or color BJ cartridge according to the required application.

  • Page 78: Black Bj Cartridge Structure

    Part 4: Technical Reference BJC-2000 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.

  • Page 79: Color Bj Cartridge Structure

    Part 4: Technical Reference BJC-2000 3.2.2 Color BJ cartridge structure The color BJ cartridge has a print head equipped with 136 nozzles through which the four ink colors are ejected (24 nozzles each for yellow, magenta, and cyan; 64 nozzles for black).

  • Page 80: Photo Bj Cartridge Structure

    Part 4: Technical Reference BJC-2000 3.2.3 Photo BJ cartridge structure The photo BJ cartridge has a print head equipped with 136 nozzles through which the four ink colors are ejected (24 nozzles each for yellow, magenta, and cyan; 64 nozzles for black).

  • Page 81: Bubble Head Unit Structure

    Part 4: Technical Reference BJC-2000 3.2.4 Bubble head unit structure 1) Bubble jet nozzles The ink held by the sponge goes through a mesh-type ink filter and flows to the bubble jet nozzles through the joint pipe. When the head-drive current is supplied to the heater board, an ink bubble is produced.

  • Page 82: Color Bj Cartridge

    Part 4: Technical Reference BJC-2000 2) Nozzle arrangement The bubble jet nozzles are arranged 1/360 inch apart in a vertical array. The black BJ cartridge has 128 nozzles. On the color BJ cartridge, the first 24 nozzles are for yellow ink, the second 24 nozzles are for magenta ink, the third 24 nozzles are for cyan ink, and the remaining 64 nozzles are for black.
  • Page 83 Part 4: Technical Reference BJC-2000 Temperature Control Heater x 2 INKS2 HENB<1> Heater 1A HENB<2> HENB<3> Heater 1B Heater 2A HENB<0> Odd ENB Heater 2B Even ENB 272-bit SEL1 Heater 3A Array SEL2 BENB3 Heater 3B Heater 4A BENB1 BENB2 Heater 4B 2-4 Block Enable Decoder 136-bit Shift...
  • Page 84 Part 4: Technical Reference BJC-2000 · Rank resistor To execute optimum heat control of each BJ cartridge, production-related deviation in heater characteristics is classified into 13 types which are identified by changing the rank resistance. From the MPU & Printer Controller's analog port, the MPU detects the different rank resistances as voltage values and converts them from analog to digital for detection.

  • Page 85: Purge Unit

    Part 4: Technical Reference BJC-2000 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 over 60 seconds during a printing operation, the purge unit wipes the print head face.

  • Page 86: Purge Unit Structure

    Part 4: Technical Reference BJC-2000 3.3.2 Purge unit structure 1) Purge drive gear Through a transmission gear, the purge drive gear is driven by the feed roller which is driven by the paper feed motor. The purge drive gear in turn drives the cam which controls the pump's operation.

  • Page 87: Carriage

    Part 4: Technical Reference BJC-2000 3.4 Carriage 3.4.1 Carriage functions 1) Print head installation BJ cartridges are attached mechanically and connected with electronic circuitry to the carriage. 2) Carriage driving Driven by the carriage motor and carriage belt, the carriage moves across the paper horizontally.

  • Page 88: Carriage Structure

    Part 4: Technical Reference BJC-2000 3.4.2 Carriage structure 1) BJ cartridge attachment section The cartridge holder moves with the locking lever which secures the BJ cartridge into the carriage. When a BJ cartridge is secured into the carriage, the ribbon cable signal contacts are pressed against the bubble jet head signal contacts, enabling signals to be transmitted from the logic board.
  • Page 89 Part 4: Technical Reference BJC-2000 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.

  • Page 90: Paper Feed

    Part 4: Technical Reference BJC-2000 3.5 Paper Feed 3.5.1 Outline of the paper feed BJ Cartridge Flag Paper End Pick-Up Roller Sensor Pick-Up Roller Sensor Spur Pressure Roller Eject Roller Feed Roller Transmission Roller Figure 4-18 Paper Feed Mechanism 1) Paper feed mechanism The paper feed mechanism supplies paper from the built-in cut-sheet feeder.

  • Page 91: Structure Of The Sheet Feeder

    Part 4: Technical Reference BJC-2000 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.

  • Page 92: Printer Electrical System

    Part 4: Technical Reference BJC-2000 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.

  • Page 93: Logic Section

    Part 4: Technical Reference BJC-2000 4.2 Logic Section 4.2.1 Logic section block diagram Address Bus A1 to A21 22.11MHz Data Bus AD0 to AD15 Reset IC DRAM DRAM Bus 1-Mbit MA0-9 MA0-9 A0-9 MD0-15 8-Mbit DO1 -16 MD0-15 Reset Switch TSW1(PB3) PE4-7 EEPROM...

  • Page 94: Logic Section Components

    Part 4: Technical Reference BJC-2000 4.2.2 Logic section components 1) MPU & Printer controller (IC3) The MPU & Printer controller contains a 16-bit CPU, 1K-bit RAM, 21-bit address bus port, 16-bit data bus port, stepping motor controller, interrupter controller, A-D converter, interface controller, print head controller, buffer controller, DRAM controller, EEPROM controller, I/O ports, and other components.
  • Page 95 Part 4: Technical Reference BJC-2000 Buffer controller The buffer controller automatically writes the received data to the receive buffer in the DRAM, manages the remaining capacity of the print buffer, and clears the data after it is read. Print head controller The print head controller converts the print data read from the DRAM's print buffer from parallel to serial and sends it to the print head.

  • Page 96: Sensor Functions

    Part 4: Technical Reference BJC-2000 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. Furthermore, 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.

  • Page 97: Head Temperature Sensor

    Part 4: Technical Reference BJC-2000 5.5 Head Temperature Sensor The head temperature sensor in the print head is a diode sensor which detects the head's internal temperature. Temperature changes in the head are detected by the MPU as voltage-level changes. The analog value input to the MPU is converted into a digital value by the A-D converter.

  • Page 98: Scanner Cartridge

    Part 4: Technical Reference BJC-2000 6. SCANNER CARTRIDGE 6.1 Scanner Cartridge Overview The scanner cartridge is a replaceable scanner unit that carries a one-line 128 pixel CCD. The scanner separates each of the three RGB primary colors of the LED by scanning the same line three times.

  • Page 99: Scanner Cartridge Structure

    Part 4: Technical Reference BJC-2000 6.1.1 Block Diagram6.2 Scanner Cartridge Structure Slit Mirror Field Lens Imaging Lens Mirror Imaging Lens Field Lens Diffusion Board Scanning Document Illumination Lens LEDs LEDs Platen Diffusion Board Illumination Lens Figure 4-26 Scanner Cartridge 1) LED Red, green and blue LEDs are used to illuminate the scanning document.
  • Page 100 Part 4: Technical Reference BJC-2000 8) Scanner controller The scanner controller is an IC that controls the CCD and processes the analog signal output from the CCD. The scanner controller also controls the following image processing: • Black Level Correction The black level is set to maximum CCD output.

  • Page 101: Signal Contacts

    Part 4: Technical Reference BJC-2000 6.3 Signal Contacts The scanner cartridge is recognized by TOP.S, DIAS, and CCHK signals. The scanned image output to the printer is transmitted with a SCLOCK signal in sync with a SDATA signal. The scanner is controlled by the internal register setting signals, CMD0, 1, 2 and 3.
  • Page 102 Part 4: Technical Reference BJC-2000 This page intentionally left blank 4-34...

  • Page 103: Part 5: Maintenance

    Part 5 MAINTENANCE Page 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. SERVICING TOOLS 5 - 2 2.1 List of Tools 5 - 3 3.

  • Page 105: Maintenance

    Part 5: Maintenance BJC-2000 1. MAINTENANCE 1.1 Parts for Regular Replacement Level Part User None Service personnel None 1.2 Consumables Level Consumable User Black BJ cartridge Color BJ cartridge Color ink cartridge/ Black ink cartridge Photo BJ cartridge Service personnel None 1.3 Periodic Maintenance Level...

  • Page 106: Servicing Tools

    Part 5: Maintenance BJC-2000 2. SERVICING TOOLS 2.1 List of Tools Ordinary Tool Phillips screwdriver For removing screws Blade screwdriver For removing plastic parts Tweezers For installing and removing coil springs Multi-meter For troubleshooting Special Tool (Parts Number) Grease MOLYKOTE PG-641 Apply to the specified place as shown in Figure 5-1 (CK-0562-000)

  • Page 107: Grease Application

    Part 5: Maintenance BJC-2000 3. GREASE APPLICATION Use the special tool to apply grease at the points and amounts shown below. Belt Holder: About 20mg (MOLYKOTE PG-641) Rubbing Section of Carriage and Carriage Shaft: About 100 mg (MOLYKOTE PG-641) Idler Roller Shaft Section: About one grain of rice (MOLYKOTE PG-641) Rear Sides of Carriage Guide Frame: About 35 to 65 mg (MOLYKOTE PG-641)

  • Page 108: Disassembly And Reassembly

    Part 5: Maintenance BJC-2000 4. DISASSEMBLY AND REASSEMBLY 4.1 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. 4.2 Disassembly and Reassembly Cautions When disassembling or reassembling the printer, note the following precautions.

  • Page 109: Logic Board And Bottom Cover Replacement Cautions

    Part 5: Maintenance BJC-2000 4.3 Logic Board and Bottom Cover Replacement Cautions 4.3.1 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.

  • Page 110: Troubleshooting

    Part 5: Maintenance BJC-2000 5. TROUBLESHOOTING 5.1 Troubleshooting 5.1.1 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.
  • Page 111 Part 5: Maintenance BJC-2000 6. Some troubleshooting procedures include successive countermeasures. These are steps which must be followed to resolve the problem. After each countermeasure step, make a test print to confirm whether the problem has been corrected. If the problem persists, execute the subsequent countermeasure steps.

  • Page 112: Error Condition Diagnosis

    Part 5: Maintenance BJC-2000 5.2 Error Condition Diagnosis 5.2.1 Initial self check START Connect the AC power (power on) MPU's RAM/DRAM check Temperature sensor check Cartridge check EEPROM check ROM check DRAM check Waste Ink check OK ? Waste ink full error Error code : 5B00 Home position check OK ?
  • Page 113 Part 5: Maintenance BJC-2000 Previous Page Paper feed motor initialization Pick-up roller initialization Paper check Paper present ? Paper eject operation Paper present ? Paper jam Error code : 1300 · Auto cleaning is not performed if the BJ Auto cleaning cartridge is not installed.

  • Page 114: Error Recovery

    Part 5: Maintenance BJC-2000 5.2.2 Error recovery a) Error display <Cause> The cartridge is not installed correctly in the cartridge 1.No Cartridge replacement position. <Suspected Parts> Cartridge, logic board, carriage connector Error <Measure> BJ cartridge reinstallation Any error display ? 1.
  • Page 115 Part 5: Maintenance BJC-2000 <Cause> The home position cannot be detected. 2.Home Position <Suspected Parts> Home position sensor, carriage motor, logic board, carriage ribbon cable Error <Measure> Visual check of carriage · Check for any paper jams, carriage belt drive mechanism wear/deterioration/dislocation, deformation of the carriage or carriage guide, scratching or bending in the carriage shaft, etc.
  • Page 116 Part 5: Maintenance BJC-2000 <Cause> •The paper feed operation is executed but the paper is 3.Paper Feed not fed. •The paper eject operation is executed but the paper Error/Paper Jam is not ejected. <Suspected Parts> Paper feed mechanism, pick-up roller sensor, paper end sensor, logic board <Measure>...
  • Page 117 Part 5: Maintenance BJC-2000 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 ? Replace pick-up roller unit Measuring points Sensor Normal reading...
  • Page 118 Part 5: Maintenance BJC-2000 <Cause> The waste ink absorbers’ estimated waste ink amount 4.Waste Ink Full has reached 100%. <Suspected Parts> Waste ink absorbers, logic board Error <Measures> 1.Reset the EEPROM and replace the bottom cover unit. 2.Replace logic board. <Cause>...
  • Page 119 Part 5: Maintenance BJC-2000 <Cause> The head temperature is abnormally high. 7. HeadT emperature <Suspected Parts> BJ cartridge, logic board Error/Head Temperature Sensor Error <Measure> Turn off the power by Since the head temperature maybe high, do unplugging the power not touch the carriage.
  • Page 120 Part 5: Maintenance BJC-2000 <Cause> Cleaning is not executed properly or not being detected. 8.Cleaning Error <Suspected Parts> Home position sensor, sensor arm, purge unit, carriage ribbon cable, logic board <Measure> During initialization, do the paper feed motor, Visual check of paper pick-up roller, feed roller, eject roller, etc., feed system operation rotate? Any abnormal noises? Is the paper...

  • Page 121: Cartridge Error

    Part 5: Maintenance BJC-2000 <Cause> Incorrect Scanner ID in spite of Scanner cartridge 9. Scanner recognition. Incorrect calibration data sent from the computer. Cartridge Error <Suspected Parts> Scanner cartridge's controller. Scanner cartridge's RAM. <Measure> Replace scanner cartridge. b) Symptoms <Symptom> The printer does not perform initializing even 1.
  • Page 122 Part 5: Maintenance BJC-2000 <Symptom> •The cartridge installed is not recognized. 2. The Printer Does •When a cartridge is installed, the carriage moves to the replacement position. Not Recognize •The installed cartridge is recognized incorrectly. The Cartridge <Cause> •Faulty contacts between the cartridge and carriage. •The cartridge is faulty.

  • Page 123: Faulty Printing

    Part 5: Maintenance BJC-2000 <Symptom> •The printer does not print at all. 3.Faulty Printing •Printing stops mid-way. •Only a certain color is printed. <1>: No Printing <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.
  • Page 124 Part 5: Maintenance BJC-2000 <Symptom> •There is blotching. 4 Faulty Printing •There are white stripes. •The specified dots are not printed. <2>: White <Cause> •The BJ cartridge or cartridge contacts are faulty. Stripes Appear •The carriage ribbon cable is faulty. •The purge unit or paper feed mechanism (missing gear tooth) is faulty.
  • Page 125 Part 5: Maintenance BJC-2000 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 Clean a few times. If problem head’s nozzles.
  • Page 126 Part 5: Maintenance BJC-2000 <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 RESET button. Set the printer offline The nozzle check pattern is printed out.

  • Page 127: Location & Signal Assignment

    Part 5: Maintenance BJC-2000 6. LOCATION & SIGNAL ASSIGNMENT 6.1 Logic Board Figure 5-3 Logic Board J5/CNH (Ribbon cable connector) Pin No. Signal name IN/OUT Description GND for head drive voltage VH GND for head drive voltage VH Driver signal for temperature control heater Driver signal for temperature control heater Head driver voltage Head driver voltage...
  • Page 128 Part 5: Maintenance BJC-2000 J1/CNPW (DC power connector) Pin No. Signal name IN/OUT Description 24 VDC 5 VDC Ground Ground J2/CNIF (Interface connector) Pin No. Signal name IN/OUT Description STROBE See Part2 for details DATA1 DATA2 DATA3 DATA4 DATA5 DATA6 DATA7 DATA8 ACKNLG...

  • Page 129: Carriage Ribbon Cable

    Part 5: Maintenance BJC-2000 6.2 Carriage Ribbon Cable 25 24 26 23 27 22 19 11 15 10 Figure 5-4 Carriage Ribbon Cable Pin No. Signal name IN/OUT Description GND for head drive voltage VH GND for head drive voltage VH Driver signal for temperature control heater Driver signal for temperature control heater Head driver voltage...

  • Page 130: Bj Cartridge & Scanner Cartridge

    Part 5: Maintenance BJC-2000 6.3 BJ Cartridge & Scanner Cartridge BJ Cartridge 11 12 13 14 4 6 5 Scanner Cartridge Figure 5-5 Contact Pad BJ cartridge Pin No. Signal name IN/OUT Description 1, 2 GND for head driver voltage VH Temperature control heater drive signal Temperature control heater drive signal 5, 6...
  • Page 131 Part 5: Maintenance BJC-2000 Scanner cartridge Signal Type Description (Ref. BJ Cartridge) 1, 2 LAMP G GND for LED 5, 6 V LAMP LED drive voltage (+24Vdc) TOP. S Scanner detection GND DIA. S Scanner detection OPEN DIODEA Not used Not used HVss COM 0 (REN)

  • Page 132: Circuit Diagrams

    Part 5: Maintenance BJC-2000 7. CIRCUIT DIAGRAMS 7.1 Parts Layout 7.1.1 Logic board Figure 5-6 Logic Board (Top View) 5-28...
  • Page 133 BJC-2000 Part 5: Maintenance 7.2 Circuit Diagrams Oscillator LOGIC BOARD 01 LOGIC BOARD 01 M62781GP 1M,1/16W 1K,1/16W CSTCV22.11 P51592EMT MXJOHI <02-E8> IFD[7..0] Vout <02-F8> C116 C115 MaRes <02-E8> 0.1m ,25V 1000p,50V BUSY <02-E8> <02-E8> SLCT RESET IC CRSTBY <02-E8> 0.1m , AFXT <02-E8>...
  • Page 134 BJC-2000 Part 5: Maintenance LOGIC BOARD 02 <01-F4> FN1A4P 0.1m ,50V 100K,1/16W CNIF Pin No.1 to 29 : to Cartridge C302 Pin No.30 to 32 : to Home Position Sensor IFD[7..0] <36pin> 47K,1/16W C301 <01-F4> 33m ,50V 47K,1/10W 3.3K,1/16W 2200m ,35V FBA10 0.1m ,50V 100.0.0625...
  • Page 136 The printing paper contains 70% waste paper. PRINTED IN JAPAN (IMPRIME AU JAPON) CANON INC.

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