Canon BJC-1000 Service Manual
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Canon BJC-1000 Service Manual

Canon BJC-1000 Service Manual

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REVISION 0
QY8-1364-000
DEC. 1998
COPYRIGHT © 1998 CANON INC. CANON BJC-1000 1298 SC 0.40-0 PRINTED IN JAPAN (IMPRIME AU JAPON)

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  • Page 1 REVISION 0 QY8-1364-000 DEC. 1998 COPYRIGHT © 1998 CANON INC. CANON BJC-1000 1298 SC 0.40-0 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 2 1298 SC 0.40-0...
  • Page 4 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.
  • Page 5 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 Part 2: Product Specifications This section outlines the products specifications.

  • Page 6: Table Of Contents

    II. TABLE OF CONTENTS Part 1: Safety and Precautions Page 1 - 1 1. PERSONAL SAFETY PRECAUTIONS 1 - 1 1.1 Moving and Rotating Parts 1 - 2 1.2 Ink Stains 1 - 2 1.2.1 Ink path 1 - 3 1.2.2 Ink mist 1 - 4 2.
  • Page 7 1.3.1 Printing drive control 4 - 5 2. FIRMWARE 4 - 5 2.1 720 dpi Printing/Smoothing Feature 4 - 5 2.1.1 Canon extension mode 4 - 6 2.2 Printing Modes 4 - 6 2.2.1 Printing mode 4 - 7 2.3 Optimum Printing Direction Control 4 - 8 3.
  • Page 8 Page Part 5: Maintenance 5 - 1 1. MAINTENANCE & SERVICING TOOLS 5 - 1 1.1 Maintenance 5 - 1 1.1.1 Parts for Regular Replacement 5 - 1 1.1.2 Consumables 5 - 1 1.1.3 Periodic Maintenance 5 - 1 1.2 Servicing Tools 5 - 2 2.
  • Page 9 III. ILLUSTRATION INDEX Page 1 - 1 Figure 1- 1 Moving and Rotating Parts 1 - 2 Figure 1- 2 Ink Path 1 - 3 Figure 1- 3 Ink Mist 1 - 4 Figure 1- 4 Storing the BJ Cartridge 1 - 5 Figure 1- 5 Spurs...
  • Page 10 Page 4 -20 Figure 4- 19 Paper Thickness Adjustment 4 -21 Figure 4- 20 Paper Feed Motor Drive Transmission 4 -22 Figure 4- 21 Paper Feed Mechanism 4 -23 Figure 4- 22 Paper Separator 4 -24 Figure 4- 23 Printer Electrical System 4 -25 Figure 4- 24 Logic Board Block Diagram...
  • Page 11 IV. TABLE INDEX Page 3 - 7 TABLE 3- 1 QUICK REFERENCE FOR SETTING 3 -10 TABLE 3- 2 ERROR INDICATIONS 3 -13 TABLE 3- 3 DEFAULT SETTING WHEN RESETTING THE EEPROM 4 - 6 TABLE 4- 1 PRINTING MODES AND HEATING METHODS 4 -29 TABLE 4- 2 LIST OF SENSOR FUNCTIONS...
  • Page 12 This page intentionally left blank VIII...

  • Page 13: Part 1: Safety And Precautions

    Part 1 SAFETY AND PRECAUTIONS Page 1 - 1 1. PERSONAL SAFETY PRECAUTIONS 1 - 1 1.1 Moving and Rotating Parts 1 - 2 1.2 Ink Stains 1 - 4 2. MACHINE PRECAUTIONS 1 - 4 2.1 Precautions for Handling BJ Cartridges 1 - 5 2.2 Printer Handling 1 - 7...

  • Page 15: Personal Safety Precautions

    BJC-1000 Part 1: Safety and Precautions 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.

  • Page 16: Ink Stains

    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.

  • Page 17: Ink Mist

    BJC-1000 Part 1: Safety and Precautions 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.

  • Page 18: Machine Precautions

    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.

  • Page 19: Ink Electroconductivity

    BJC-1000 Part 1: Safety and Precautions 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.

  • Page 20: Precautions To Prevent Damage From Static Electricity

    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...

  • Page 21: Precautions For Service

    BJC-1000 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-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...

  • Page 23: Disassembly And Reassembly Precautions

    BJC-1000 Part 1: Safety and Precautions 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. Some plastic parts contain glass fibers for extra rigidity and precision, but CAUTION since their viscosity is low, plastic hooks can break easily when excessive force is used.
  • Page 24 Part 1: Safety and Precautions BJC-1000 This page intentionally left blank 1-10...

  • Page 25: 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 2.

  • Page 27: Product Outline

    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.

  • Page 28: Features

    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.

  • Page 29: Bj Cartridge

    BJC-1000 Part 2: Product Specifications 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.

  • Page 30: Bj Cartridge Container

    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)

  • Page 31: Specifications

    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)
  • Page 32 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.

  • Page 33: Paper Specifications

    BJC-1000 Part 2: Product Specifications 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 17. Noise Sound pressure level* Approx. 45 dB (A) *:Conforming to sound pressure level ISO 9296 18.

  • Page 34: Printing Range

    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. Printable Area Minimum 3.4 mm 0.13" 3.4 mm 0.13"...

  • Page 35: Interface Specifications

    BJC-1000 Part 2: Product Specifications 2.3 Interface Specifications The parallel interface sends 8 bits (one byte) of data at a time and is transistor- transistor-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).
  • Page 36 Part 2: Product Specifications BJC-1000 Nibble 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 37 BJC-1000 Part 2: Product Specifications 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.
  • Page 38 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.
  • Page 39 BJC-1000 Part 2: Product Specifications 9) Timing 0.5ms 1.0ms 0.5ms Min. Min. Min. DATA 1 to 8 STROBE BUSY ACKNLG Approx. Figure 2-9 Timing Chart (Compatible Mode) 1284 Active Ack Data Req Bit2 Bit6 Data (1 to 8) 0000 0000 Unknown Host Busy Host Clk...
  • Page 40 Part 2: Product Specifications BJC-1000 This page intentionally left blank 2-14...

  • Page 41: 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 - 6 1.4 Turning the Printer On/Off 3 - 7 1.5 Paper Settings 3 - 7 1.6 Banner Printing...

  • Page 43: Printer Setup

    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 Figure 3-1 Packaging...

  • Page 44: Printer Dimensions

    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.

  • Page 45: Setup Procedure

    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.
  • Page 46 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.

  • Page 47: Installing The Cartridge

    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. Figure 3-6 Cartridge Installation There are four types of BJ cartridges that can be installed in the printer: BC-01, BC-02, BC-05 and BC-06 photo.

  • Page 48: Turning The Printer On/Off

    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.

  • Page 49: Paper Settings

    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 Thickness Lever Flap Position Max.

  • Page 50: Name Of The Parts And Their Functions

    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/m ) for automatic feeding.
  • Page 51 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.

  • Page 52: Printer Servicing Functions

    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...

  • Page 53: Cleaning The Bj Cartridge

    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.

  • Page 54: Service Test Print

    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...

  • Page 55: Eeprom Reset

    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.
  • Page 56 Part 3: Operating Instructions This page intentionally left blank 3-14...

  • Page 57: Part 4: Technical Reference

    Part 4 TECHNICAL REFERENCE Page 4 - 1 1. OVERVIEW 4 - 1 1.1 Block Diagram 4 - 2 1.2 Printing 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 - 7...

  • Page 59: Overview

    BJC-1000 Part 4: Technical Reference 1. OVERVIEW 1.1 Block Diagram Paper Feed Motor Carriage · BJ Cartridge Carriage Motor · Home Position Sensor Logic Board Paper Feed Carriage Motor Driver Motor Driver (+27.6VDC) MPU & Printer Controller (+5VDC) DRAM EEPROM Control ROM Figure 4-1 Block Diagram...

  • Page 60: Printing Signal Flow

    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 &...

  • Page 61: Print Drive

    BJC-1000 Part 4: Technical Reference 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.
  • Page 62 Part 4: Technical Reference BJC-1000 COM 1 COM 2 COM 3 • • • • COM 8 SEG odd * SEG even * nozzles nozzles nozzles nozzles 1 to 8 9 to 16 17 to 24 57 to 64 * Simultaneously driven in the HS mode Pulse width is variable.

  • Page 63: Firmware

    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.

  • Page 64: Printing Modes

    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.

  • Page 65: Optimum Printing Direction Control

    BJC-1000 Part 4: Technical Reference 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.

  • Page 66: Printer Mechanical System

    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.
  • Page 67 BJC-1000 Part 4: Technical Reference 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 68: Black Bj Cartridge Structure

    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.

  • Page 69: Color/Photo Bj Cartridge Structure

    BJC-1000 Part 4: Technical Reference 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.

  • Page 70: Bubble Head Unit Structure

    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.
  • Page 71 BJC-1000 Part 4: Technical Reference 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.
  • Page 72 Part 4: Technical Reference BJC-1000 4) Circuit diagram COM1 COM2 COM8 SEG1 SEG2 SEG8 HRANK HRANK HRANK HRANK 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...
  • Page 73 BJC-1000 Part 4: Technical Reference COM1 COM2 COM4 COM5 COM7 COM8 SEG1 SEG2 SEG8 HRANK HRANK HRANK HRANK 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.
  • Page 74 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.

  • Page 75: Purge Unit

    BJC-1000 Part 4: Technical Reference 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.

  • Page 76: Purge Unit Structure

    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.

  • Page 77: Carriage

    BJC-1000 Part 4: Technical Reference 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.

  • Page 78: Carriage Structure

    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.
  • Page 79 BJC-1000 Part 4: Technical Reference 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 80: Paper Feed

    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.

  • Page 81: Structure Of The Sheet Feeder

    BJC-1000 Part 4: Technical Reference 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 82: Printer Electrical System

    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.

  • Page 83: Logic Section

    BJC-1000 Part 4: Technical Reference 4.2 Logic Section 4.2.1 Logic section block diagram Address Bus A1 to A20 22.11 16MHz Data Bus AD0 to AD15 Reset IC DRAM DRAM Bus 1-Mbit MA0-8 MA0-8 A0-7 MD0-15 8-Mbit MD0-15 I/O1-16 Reset Switch P86, P93-95 EEPROM 1 Kbit...

  • Page 84: Logic Section Components

    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.
  • Page 85 BJC-1000 Part 4: Technical Reference 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.

  • Page 86: Sensor Functions

    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.

  • Page 87: Temperature Sensor

    BJC-1000 Part 4: Technical Reference 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 &...
  • Page 88 Part 4: Technical Reference BJC-1000 This page intentionally left blank 4-30...

  • Page 89: Part 5: Maintenance

    Part 5 MAINTENANCE Page 5 - 1 1. MAINTENANCE & SERVICING TOOLS 5 - 1 1.1 Maintenance 5 - 1 1.2 Servicing Tools 5 - 2 2. GREASE APPLICATION 5 - 3 3. DISASSEMBLY AND REASSEMBLY 5 - 3 3.1 Disassembly and Reassembly 5 - 3 3.2 Disassembly and Reassembly Cautions 5 - 4...

  • Page 91: Maintenance & Servicing Tools

    Part 5: Maintenance BJC-1000 1. MAINTENANCE & SERVICING TOOLS 1.1 Maintenance 1.1.1 Parts for Regular Replacement Level Part User None Service personnel None 1.1.2 Consumables Level Consumable User Black BJ cartridge Color BJ cartridge Photo BJ cartridge Service personnel None 1.1.3 Periodic Maintenance Level Periodic Maintenance...

  • Page 92: Grease Application

    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)

  • Page 93: Disassembly And Reassembly

    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.

  • Page 94: Logic Board And Bottom Cover Replacement Cautions

    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.

  • Page 95: Troubleshooting

    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.
  • Page 96 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...

  • Page 97: Error Condition Diagnosis

    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 ? Waste ink full error Home position check OK ? Home position error...
  • Page 98 Part 5: Maintenance BJC-1000 Previous Page Paper feed motor initialization Pick-up roller initialization Paper check Paper present ? Paper eject operation Paper present ? Paper jam Cartridge check Is cartridge installed ? · Auto cleaning is not performed if the BJ Auto cleaning cartridge is not installed.

  • Page 99: Error Recovery

    Part 5: Maintenance BJC-1000 4.2.2 Error recovery a) Error display <Cause> The cartridge is not installed correctly. <Suspected Parts> 1.No Cartridge Cartridge, logic board, carriage connector Error (Code : 5600) <Measure> BJ cartridge reinstallation Any error display ? 1. Replace BJ cartridge 2.

  • Page 100: Home Position

    Part 5: Maintenance BJC-1000 <Cause> The home position cannot be detected. 2.Home Position <Suspected Parts> Home position sensor, carriage motor, logic board, carriage ribbon cable Error (Code : 5000) <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...
  • Page 101 Part 5: Maintenance BJC-1000 <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 102 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 ? Replace pick-up roller unit Measuring points Sensor Normal reading...
  • Page 103 Part 5: Maintenance BJC-1000 <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 104 Part 5: Maintenance BJC-1000 <Cause> Cleaning is not executed properly or not being detected. 7.Purging <Suspected Parts> Home position sensor, sensor arm, purge unit, carriage ribbon cable, logic board Operation Error (Code : 5C00) <Measure> During initialization, do the paper feedmotor, Visual check of paper pick-up roller, feed roller, eject roller, etc., feed system operation...
  • Page 105 Part 5: Maintenance BJC-1000 b) Symptoms <Symptom> The printer does not perform initializing even 1. The Power Does when the AC plug is connected. <Cause> The AC adapter and/or control board is faulty. Not Turn On <Measure> START With the AC adapter and logic board connected by the DC plug output DC connector cable, check and measure the output voltage check...
  • Page 106 Part 5: Maintenance BJC-1000 <Symptom> •The cartridge installed is not recognized. 2. The Printer Does •The installed cartridge is recognized incorrectly. <Cause> •Faulty contacts between the cartridge and carriage. Not Recognize •The cartridge is faulty. The Cartridge •The carriage ribbon cable is faulty. •The logic board is faulty.

  • Page 107: Faulty Printing

    Part 5: Maintenance BJC-1000 <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 108 Part 5: Maintenance BJC-1000 <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 109 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 Perform cleaning operations head’s nozzles. (No paper several times.
  • Page 110 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. Set the printeroffline The nozzle check pattern is printed out.

  • Page 111: Location & Signal Assignment

    Part 5: Maintenance BJC-1000 5. LOCATION & SIGNAL ASSIGNMENT 5.1 Logic Board Figure 5-3 Logic Board J1/CNH (Ribbon cable connector) Pin No. Signal name IN/OUT Description Not used HPS-A Photo LED drive Ground Home position sense High / Low (sense) HSEG7 SEG7 heat enable HCOM3...
  • Page 112 Part 5: Maintenance BJC-1000 J2/CNCR (Carriage motor connector) Pin No. Signal name IN/OUT Description Carriage motor phase A Carriage motor phase A Carriage motor phase B Carriage motor phase B J3/CNLF (Paper feed motor connector) Pin No. Signal name IN/OUT Description Paper feed motor phase A Paper feed motor phase A Common...

  • Page 113: Carriage Ribbon Cable

    Part 5: Maintenance BJC-1000 5.2 Carriage Ribbon Cable 29 30 26 27 17 21 24 25 Figure 5-4 Carriage Ribbon Cable BJ cartridge Pin No. Signal name IN/OUT Description pin no. Not used HPS-A Photo LED drive Ground Home position sense High / Low (sense) HSEG7 SEG7 heat enable HCOM3...

  • Page 114: Bj Cartridges

    Part 5: Maintenance BJC-1000 5.3 BJ Cartridges 32 31 30 29 28 27 26 25 15 14 13 12 11 10 7 Figure 5-5 Contact Pad BLACK BJ CARTRIDGE Pin No. Signal name IN/OUT Description J1 pin no. HGND1 GND for warm-up heater voltage VH HEATER1 Warm-up heater voltage VH and Detection signal TMPSEN1A...

  • Page 115: Circuit Diagrams

    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...
  • Page 116 Part 5: Maintenance BJC-1000 Figure 5-7 Logic Board (Bottom View) 5-26...
  • Page 117 BJC-1000 Part 5: Maintenance 6.2 Circuit Diagrams LOGIC BOARD 01 Oscillator <03-D6> BUSY <03-D6> <03-D6> 10K, 1/10W SLCT FP73 1M, 1/10W <03-C6> AFXT <03-C6> INIT <03-C6> Reset IC FAULT <03-C6> OUT OUT SELIN EEPROM(1Kbit) <03-C6> 1000p, 50V <03-E8> CST22.11MXW040 <03-E6> IFD[7..0] S-29130AFJ-TB 1000p,50V...
  • Page 119 BJC-1000 Part 5: Maintenance LOGIC BOARD 02 R136 J1(2/2) F138 R135 47K, 1/10W 10K, 1/10W 10K, 1/10W R111 IP13 FP56 HRANK <01-C6> HRANK1 R119 150, 1/10W C101 J1(1/2) C102 VH-G 20K, 1/10W FP57 R101 0.01 , 50V RD6.2MB1 0.01 , 50V HRANK2 FP34 IP94...
  • Page 121 BJC-1000 Part 5: Maintenance LOGIC BOARD 03 CNIF IFD[7..0] < 01-F2 > < 03-E6, 03-D3,03-E4, 03-B3> FCN-684J036-L/U B (36pin) BLM21A025 IP77 10, 1/10W FP101 FB66 IP78 10, 1/10W FP102 FB67 FP74 IP79 10, 1/10W FP103 < 01-F3 > FB68 FN1A4P IP80 10, 1/10W FP104...
  • Page 123 BJC-1000 Part 5: Maintenance LOGIC BOARD 04 CNPS Carriage Motor R100 IP93 FP185 FP187 Cange VH 10K,1/10W APPROX.11 FP189 FP186 FP188 phase FP190 2SJ377(2-7B1B) FP210 VH(27.6V) CNCR FP211 LM13 R414 100K,1/10W IP20 FP85 NC 3 C205 C218 C224 C215 FP86 ZD100 0.01 ,50V 330 ,35V...
  • Page 126 The printing paper contains 70% waste paper. PRINTED IN JAPAN (IMPRIME AU JAPON) CANON INC.

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