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Canon BJC 6000 - Color Inkjet Printer Service Manual

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REVISION 0
QY8-1361-000
JAN. 1999
COPYRIGHT
1999 CANON INC. CANON BJC-6000 SE 0199 0.30-0 PRINTED IN JAPAN (IMPRIME AU JAPON)

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Summary of Contents for Canon BJC 6000 - Color Inkjet Printer

  • Page 1 REVISION 0 QY8-1361-000 JAN. 1999 COPYRIGHT 1999 CANON INC. CANON BJC-6000 SE 0199 0.30-0 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 2 0199 SE 0.30-0...
  • Page 4 This manual may include technical inaccuracies or typographical errors due to improvements or changes in the products. When amendments are made to the content of this manual, Canon will issue technical information as the need arises. In the event of major alterations to the content of this manual over a long or short period, Canon will publish a revised version of the manual.
  • Page 5 I. ABOUT THIS MANUAL This manual is divided into five parts containing the information required for servicing the BJC-6000 printer. Part 1: Safety and Precautions This part contains information on how to service the unit safety. It is very important, and must be read.

  • 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 paths 1 - 3 1.2.2 Ink mist 1 - 4 1.3 Live Electrical Parts 1 - 5...
  • Page 7 Page 3 - 9 1.3.4 Aligning the print heads 3 -10 1.4 Names of Parts and Their Functions 3 -11 2. TRANSPORTING THE PRINTER 3 -11 2.1 Transporting the Printer 3 -12 3. PRINTER SERVICE FUNCTIONS 3 -12 3.1 Error Indications 3 -13 3.2 Description of Error Indications 3 -14...
  • Page 8 Page 4 -18 3.1.3 Purge unit 4 -18 3.1.4 Paper feed unit 4 -19 3.2 BJ Cartridge 4 -19 3.2.1 Construction of the Black BJ cartridge 4 -20 3.2.2 Construction of the Color/Photo BJ cartridge 4 -21 3.2.3 Construction of the bubble jet head unit 4 -25 3.3 Purge Unit 4 -25...
  • Page 9 5 - 8 5.1.1 EEPROM setting 5 - 8 5.1.2 Carriage belt tension adjustment 5 - 8 5.1.3 ASF gear position adjustment 5 - 8 5.1.4 Head gap adjustment 5 - 9 5.2 Adjustment/Setting Procedures 5 - 9 5.2.1 EEPROM setting 5 - 9 5.2.2 Carriage belt tension adjustment 5 -10...

  • Page 10: Page Part 1: Safety And Precautions

    III. ILLUSTRATION INDEX Part 1: SAFETY AND PRECAUTIONS Page 1 - 1 Figure 1- 1 The Printer's Moving Parts 1 - 2 Figure 1- 2 Ink Paths 1 - 3 Figure 1- 3 Ink Mist 1 - 4 Figure 1- 4 Live Electrical Parts 1 - 5 Figure 1- 5...
  • Page 11 Page 4 - 7 Figure 4- 6 Print Drive Method (1440 x 720 dpi, forward direction) 4 - 8 Figure 4- 7 Print Drive Method (Reverse direction) 4 - 9 Figure 4- 8 Power-Off Sequence Flowchart 4 -10 Figure 4- 9 Interfacing Timing (Compatible Mode) 4 -11 Figure 4- 10...
  • Page 12 IV. TABLE INDEX Part 3: OPERATING INSTRUCTIONS Page 3 -12 Table 3- 1 Error Indications Part 4: TECHNICAL REFERENCE 4 -14 Table 4- 1 Print Mode List 4 -23 Table 4- 2 Signal Contacts VIII...
  • Page 13 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 Live Electrical Parts 1 - 5 2. MACHINE PRECAUTIONS 1 - 5 2.1 BJ Cartridges 1 - 7 2.2 Ink Tanks...

  • Page 15: Safety Precautions

    Part 1: Safety and Precautions BJC-6000 1. SAFETY PRECAUTIONS 1.1 Moving Parts Be careful not to get your fingers, hair, clothing, or accessories caught in the moving parts of the printer. The moving parts are driven either by the carriage motor or paper feed motor. The carriage motor-related moving parts include the carriage, carriage belt, and carriage ribbon-cable.

  • Page 16: Ink Stains

    Part 1: Safety and Precautions BJC-6000 1.2 Ink Stains 1.2.1 Ink paths Be careful not to touch the ink paths. Ink on hands could stain the printer, work table, or clothes. The ink paths include the BJ cartridge ink tank outlet, the BJ cartridge ink filters and nozzles, the maintenance jet receiving section, the head caps, the wipers, and the waste ink absorber.

  • Page 17: Ink Mist

    Part 1: Safety and Precautions BJC-6000 1.2.2 Ink mist The BJ cartridge ejects ink onto the paper during printing. After the printer is used for a long period or used heavily, part of the ink ejected from the nozzles, or ink mist bouncing back from the paper could accumulate and contaminate the platen, front cover, as well as the periphery of the purge unit.

  • Page 18: Live Electrical Parts

    Part 1: Safety and Precautions BJC-6000 1.3 Live Electrical Parts When the printer is plugged into a wall outlet, the power supply unit of the printer is live, even if the power is switched off with the POWER button. Be careful not to get an electric shock or damage sensitive elements if you are checking a live printer with the cover removed.

  • Page 19: Machine Precautions

    Part 1: Safety and Precautions BJC-6000 2. MACHINE PRECAUTIONS 2.1 BJ Cartridges 2.1.1 BJ cartridge handling Do not unpack the BJ cartridge until you are ready to use it. Before installing the BJ cartridge in the printer, carefully remove the head cap which protects the nozzles, the protective tape, and the protective tank.

  • Page 20: Automatic Capping

    Part 1: Safety and Precautions BJC-6000 2.1.2 Automatic capping When the printer is turned off with the POWER button, it automatically caps the BJ cartridge's nozzles to protect them as well as to prevent ink leakage. If the AC cable is unplugged from a wall outlet before the printer is turned off with the POWER button, the nozzles will not be automatically capped.

  • Page 21: Ink Tanks

    Part 1: Safety and Precautions BJC-6000 2.2 Ink Tanks 2.2.1 Unpacking the ink tank Do not unpack the ink tank until you are ready to use it. When installing it in the BJ cartridge, unpack the ink tank, peel off the vinyl lamination, and remove the cap from the ink outlets.

  • Page 22: Printer Handling

    Part 1: Safety and Precautions BJC-6000 2.3 Printer Handling 2.3.1 Spurs Take care not to bend the tips of the spurs. The tips of the spurs make contact with printed paper and are contaminated with ink, but due to their small surface contact area, the tips, cleaned by the spur cleaners, will not stain the printed paper.

  • Page 23: Damage Due To Static Electricity

    Part 1: Safety and Precautions BJC-6000 2.3.2 Damage due to static electricity Static electricity may be generated by your clothes rubbing against each other and may accumulate in your body. If you touch electrical elements, the discharge of static electricity could damage them or change their electrical characteristics. For this reason, never touch the sensor contacts or the printer's BJ cartridge contacts.

  • Page 24: Ink Leakage Prevention

    Part 1: Safety and Precautions BJC-6000 2.3.3 Ink leakage prevention When you turn off the printer using the POWER button, the printer moves the carriage to the capping position, caps the nozzles, and locks the carriage in position with the lock arm.

  • Page 25: Notes On Servicing

    Part 1: Safety and Precautions BJC-6000 3. NOTES ON SERVICING 3.1 EEPROM Data The printer keeps track of the total sheets printed by each BJ cartridge configuration (Black/Color and Photo/Color) and the total waste ink amount and stores that information in the EEPROM (IC 602) on the logic board. Observe the following precautions during servicing: 1) Before servicing You can check the EEPROM data with a test print.

  • Page 26: Static Electricity

    Part 1: Safety and Precautions BJC-6000 3.2 Static Electricity Static electricity may be generated by your clothes rubbing against each other and may accumulate in your body. If you touch electrical elements, the discharge of the static electricity could damage them or change their electrical characteristics. To prevent damage due to such electrostatic discharge, ground yourself by touching a metal fitting which is grounded before disassembling or otherwise servicing the printer.

  • Page 27: Disassembly And Reassembly

    Part 1: Safety and Precautions BJC-6000 3.3 Disassembly and Reassembly Disassembly and reassembly must be done according to the relevant parts catalog, which illustrates the step-by-step procedures to be followed. Additional notes are provided in Part5: 4. DISASSEMBLY AND REASSEMBLY (Page 5-4). The printer uses many plastic parts.

  • Page 28: Self Diagnosis

    Part 1: Safety and Precautions BJC-6000 3.4 Self Diagnosis The printer has self-diagnosis features to detect hardware defects. The results of the diagnosis are indicated by the indicator and power lamp (flashing) on the operator panel as well as by the buzzer. For details, refer to Part 3: 3.1 Error Indications (Page 3-12).

  • Page 29: Part 2: Product Specifications

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

  • Page 31: Product Outline

    Part 2: Product Specifications BJC-6000 1. PRODUCT OUTLINE 1.1 Outline This printer is a desktop business/personal color bubble-jet printer for high speed/high quality use. It accommodates two "drop-modulation" BJ cartridges on its carriage. For high speed use, a pigment-Black BJ cartridge and a Color BJ cartridge combination achieves four-color printing for quality equal to a laser printer.

  • Page 32: Features

    Part 2: Product Specifications BJC-6000 1.2 Features · Laser-printer quality using pigment black ink · Dual-cartridge system High quality printing at high speed from a combination of the Black and Color cartridges or the Color and Photo cartridges Black BJ cartridge: Drop modulation, replaceable ink tank (pigment black), 160 nozzle head Color BJ cartridge: Drop modulation, individually replaceable ink tanks (yellow, magenta and cyan), 144 in-line nozzle head (48 nozzles for each of...

  • Page 33: Bj Cartridge

    Part 2: Product Specifications BJC-6000 1.3 BJ Cartridge 1.3.1 Black BJ cartridge The Black BJ cartridge is to be mounted on the left side of the carriage for high speed color/monochrome printing. It is a disposable print head. It has 160 nozzles and accommodates a replaceable ink tank.

  • Page 34: Photo Bj Cartridge

    Part 2: Product Specifications BJC-6000 1.3.3 Photo BJ cartridge The Photo BJ cartridge, mounted on the left side of the carriage for photo printing, is a disposable print head with 144 in-line nozzles, and accommodates replaceable photo-black, photo-magenta and photo-cyan ink tanks. It has 144 nozzles (48 nozzles for each of the three colors), aligned vertically.

  • Page 35: Consumables

    Part 2: Product Specifications BJC-6000 1.5 Consumables 1.5.1 Black, color, and photo BJ cartridges The Black, Color and Photo BJ cartridges for this printer are consumables. The BJ cartridges that come with your printer are identical to the BJ cartridges that are commercially available as consumables, except for the packaging.

  • Page 36: Specifications

    6. Printing width 218 mm max. 7. Line feed speed Approx. 118 ms 8. Internal print control mode Canon extended mode (available when the Canon printer driver is used), no emulation mode available 9. Printable characters (for test printing) Font: Courier...
  • Page 37 Part 2: Product Specifications BJC-6000 12. BJ cartridges Black BJ cartridge Construction: Separate ink tank type Print head: 160 nozzles, in-line Ink: Pigment black Cartridge service life: Approx. 5000 pages (1500-character, HQ mode) Ink tank: Black Ink tank service life: Approx.

  • Page 38: Paper Specifications

    Thickness: max. 0.6 mm thick, max. 297 mm long Government Postcard weight: max. 190 g/m , max. 0.23 mm thick Canon BJ printer High-resolution paper Glossy photo paper Glossy photo film Transparencies Back print film Banner paper (long type)
  • Page 39 Part 2: Product Specifications BJC-6000 3. Printable Area A4, A5, and B5 sizes Letter (LTR) and legal (LGL) sizes (1) 18.5mm (1) 18.5mm (2) 26.5mm (2) 26.5mm (2) 27.0mm (1) 22.5mm 7.0mm (2) 27.0mm 3.4mm 3.4mm (1) 22.5mm 7.0mm 6.4mm 6.3mm Postcard size A4+ and letter+ (LTR+) sizes...

  • Page 40: Interface Specifications

    Part 2: Product Specifications BJC-6000 2.3 Interface Specifications 1) Interface type IEEE1284-compatible parallel interface 2) Data transfer method 8-bit parallel (supporting nibble/ECP mode) 3) Signal level Low level: +0.0 to +0.8 V High level: +2.4 to +5.0 V 4) I/O Each signal pulled up with +5 V.
  • Page 41 Part 2: Product Specifications BJC-6000 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 42 Part 2: Product Specifications BJC-6000 8) I/O signals Compatible Mode: STROBE (Input) This signal asks the printer to read Data 1 to Data 8. This signal becomes valid after the BUSY signal goes "L" and the printer outputs ACKNLG. This signal is normally "H,"...
  • Page 43 Part 2: Product Specifications BJC-6000 SELECT IN (Input) When this signal is "H," the DC1/DC3 code is enabled; and when this signal is "L," the DC1/DC3 code is disabled. The printer reads this signal only at the time of power-up or initialization in response to the INIT signal. Nibble Mode: Host Clk (Input) This is a STROBE signal for reading Data 1-8.
  • Page 44 Part 2: Product Specifications BJC-6000 Data Avail (Output) In the reverse data transmission phase, this signal serves as bit 0 and bit 4 of data to be sent. During negotiation, this signal tells the host computer whether or not reverse transmission data is available. This signal is output in synchronization with the "H"-to-"L"...
  • Page 45 Part 2: Product Specifications BJC-6000 Host Ack (Input) When data is to be sent from the host computer to the printer, this signal is used to tell whether the data the host computer has output on the data bus is command or data ("L"...
  • Page 46 Part 2: Product Specifications BJC-6000 Negotiation Setup Data Transmission (from printer to host computer) 1284 Active Ack Data Req Bit2 Bit6 Data (1~ 8) 0000 0000 Host Busy Host Clk Ptr Clk Ptr Busy Bit3 Bit7 Printer Busy Status Bit0 Bit4 Data Avail Xflag...

  • Page 47: Part 3: Operating Instructions

    Part 3 OPERATING INSTRUCTIONS Page 3 - 1 1. PRINTER SETUP 3 - 1 1.1 Unpacking 3 - 2 1.2 Installation Location 3 - 3 1.3 Installation 3 -10 1.4 Names of Parts and Their Functions 3 -11 2. TRANSPORTING THE PRINTER 3 -11 2.1 Transporting the Printer 3 -12...

  • Page 49: Printer Setup

    Part 3: Operating Instructions BJC-6000 1. PRINTER SETUP 1.1 Unpacking After unpacking, make sure the items below are included: Quick Start Guide Ink Tanks Packing Packing Printer Cartridge Container Documentation BJ Cartridges Carton Packing Packing Tape Tape Tape Figure 3-1 Packaging...

  • Page 50: Installation Location

    Part 3: Operating Instructions BJC-6000 1.2 Installation Location To ensure optimum performance, install the printer where there is adequate space. The figure below illustrates the printer's outside dimensions. Approx. 275 mm Approx. 270 mm Approx. 470 mm Approx. 195 mm Figure 3-2 Printer Dimensions Use the printer where the ambient temperature is between 5°C and 35°C, NOTE...

  • Page 51: Installation

    Part 3: Operating Instructions BJC-6000 1.3 Installation Set up the printer as follows. 1.3.1 Connecting the interface cable 1) Make sure both the printer and the computer are switched OFF. 2) Connect the interface cable to the interface connector on the printer. Lock the connector clips.

  • Page 52: Installing The Bj Cartridges

    Part 3: Operating Instructions BJC-6000 1.3.3 Installing the BJ cartridges This printer can be used with the Black, Color, and Photo BJ cartridges, in the following combinations : Black/Color BJ cartridges or Photo/Color BJ cartridges. a) Removing head protection from the BJ cartridges Remove the BJ cartridge from its package, and remove the head cap that protects the nozzles, and the protective tape from the cartridge, as shown in the figure below.
  • Page 53 Part 3: Operating Instructions BJC-6000 b) Installing the BJ cartridges Open the printer cover to install the BJ cartridges on the carriage. Install the Color BJ cartridge on the right side of the carriage. Install either the Black or Photo BJ cartridge on the left side of the carriage.
  • Page 54 Part 3: Operating Instructions BJC-6000 c) Installing the ink tanks Peel off the protective film from the ink tank, and slowly turn the protective cap off. Install the ink tanks in the BJ cartridges in the correct positions as indicated by the label affixed inside the printer.
  • Page 55 Part 3: Operating Instructions BJC-6000 e) Replacing the ink tanks For the Black, Color and Photo BJ cartridges, each ink tank can be individually replaced. 1) When to replace the ink tank Replace the ink tank with a new one if no ink can be seen inside, or as indicated by the ink-out alarm, or if it was unpackaged for more than six months and printing quality does not improve even after several cleanings.
  • Page 56 Part 3: Operating Instructions BJC-6000 f) Cartridge container This printer comes with a BJ cartridge container to store BJ cartridges. Once you have removed a BJ cartridge from the printer, store it in this cartridge container, ink tanks installed in place. If the BJ cartridge is left in open air, its nozzles may be damaged or clogged by dried ink.

  • Page 57: Aligning The Print Heads

    Part 3: Operating Instructions BJC-6000 1.3.4 Aligning the print heads As there are two BJ cartridges installed in this printer, even a slight difference in size or seating position between them may result in inaccurate dot placement, and thereby poor printing. To correct this, after installing the BJ cartridges, perform the automatic head position adjustment, one of the utilities the printer driver package provides.

  • Page 58: Names Of Parts And Their Functions

    Part 3: Operating Instructions BJC-6000 1.4 Names of Parts and Their Functions The main parts of the printer and their functions are illustrated below. Paper Guide Paper Support Lightly press this guide against Extend this paper rest to support the left side of paper sheets to larger size paper.

  • Page 59: Transporting The Printer

    Part 3: Operating Instructions BJC-6000 2. TRANSPORTING THE PRINTER When carrying or transporting the printer, keep BJ cartridges installed in the printer, or stored in the cartridge container. This prevents the ink from leaking or drying out in the nozzles during transportation. To prevent ink leakage, transport the printer with the ink tanks installed in the BJ cartridge.

  • Page 60: Printer Service Functions

    Part 3: Operating Instructions BJC-6000 3. PRINTER SERVICE FUNCTIONS 3.1 Error Indications This printer displays errors with the indicator lamp and buzzer. Also, when an error occurs during printing, an error code is displayed on the status monitor to indicate the type of the error.

  • Page 61: Description Of Error Indications

    Part 3: Operating Instructions BJC-6000 3.2 Description of Error Indications Errors recoverable by users: 1) Paper feed error Paper feed operation fails to feed paper. 2) Paper jam error Paper eject operation of 23 inches still fails to eject the paper. 3) Ink out error The indicated ink tank is out of ink (ink chamber and sponge).

  • Page 62: Bj Status Monitor

    Part 3: Operating Instructions BJC-6000 3.3 BJ Status Monitor The BJ status monitor window shows the printer's conditions and print-job progress. You can stop the print-job from this window. 3.3.1 Main functions of the BJ status monitor 1) Show the printer's conditions and progress in real-time by means of graphics and messages.

  • Page 63: Function Settings

    3.4 Function Settings As this printer has no physical function selectors, function settings can be set by using the Canon printer driver. 3.4.1 Function settings using the printer driver The printer driver's utility menu allows such operations and function settings as listed below.

  • Page 64: Off-Line Operations

    Part 3: Operating Instructions BJC-6000 3.5 Off-line Operations This printer has three operations which can be performed independent of the computer: To select these operations, while holding down the RESUME button, power on the printer by pressing the POWER button, confirm the specified number of beeps, and then release the RESUME button.

  • Page 65: Roller Cleaning

    Part 3: Operating Instructions BJC-6000 Black BJ Cartridge Color BJ Cartridge Printed with the first nozzle Large dot printing Printed with the first nozzle Yellow 48 nozzles Cyan 48 nozzles Magenta 48 nozzles Black 160 nozzles Printed with the 48th nozzle Printed with the 160th nozzle Small-dot printing Printed with the first nozzle...

  • Page 66: Service Mode

    Part 3: Operating Instructions BJC-6000 3.6 Service Mode This printer has a service mode for service-related settings or performing test printing. The operator panel buttons are used to enter service mode. 3.6.1 Service mode operations 1) With the printer powered off, while pressing the RESUME button, press the POWER button.

  • Page 67: Service/Factory Test Print

    Part 3: Operating Instructions BJC-6000 3.6.2 Service/factory test print The service/factory test print displays, in the header portion, such information as the control ROM version, model setting, total sheets passed, and total waste ink absorbed. Currently installed left and right cartridges Total number of pages passed when using Photo/Color cartridge Model...

  • Page 68: Eeprom Information Print

    Part 3: Operating Instructions BJC-6000 3.6.3 EEPROM information print The EEPROM stores such information as function settings, total sheets passed with the Black/Color or Photo/Color cartridges, total waste ink absorbed, and records the last three errors recoverable only by service personnel. The information stored in the EEPROM is printed out as a hexadecimal dump in the EEPROM information print.

  • Page 69: Resetting Eeprom

    Part 3: Operating Instructions BJC-6000 3.6.4 Resetting EEPROM The EEPROM stores such information as function settings, total sheets passed with the Black/Color or Photo/Color cartridge, total waste ink absorbed, and the last three errors recoverable only by service personnel. Because the waste ink full error is based on the data of the total waste ink absorbed as stored in the EEPROM, the Waste Ink Counter must be cleared whenever the waste ink absorber has been replaced.
  • Page 70 Part 3: Operating Instructions BJC-6000 This page intentionally left blank 3-22...

  • Page 71: Part 4: Technical Reference

    Part 4 TECHNICAL REFERENCE Page 4 - 1 1. OVERVIEW 4 - 1 1.1 Printer Block Diagram 4 - 2 1.2 Power On Sequence Flowchart 4 - 3 1.3 Flow of Print Signals 4 - 4 1.4 Print Driving 4 - 9 1.5 Power-Off Sequence Flowchart 4 -10 2.

  • Page 73: Overview

    Part 4: Technical Reference BJC-6000 1. OVERVIEW 1.1 Printer Block Diagram Print Position Sensor BJ Cartridge BJ Cartridge Paper Feed Purge Unit ASF Unit Carriage Roller Purge Sensor Home Position Paper Feed Drive Sensor Switching Unit Paper Feed Carriage Motor Motor Ink Sensor Mechanical...

  • Page 74: Power On Sequence Flowchart

    Part 4: Technical Reference BJC-6000 1.2 Power On Sequence Flowchart This flowchart shows the initial sequence this printer goes through from power-on to on-line. AC Connection • Printer plugged In. • MPU/printer controller initialized • ROM/RAM check • Ink sensor check Software initialization •...

  • Page 75: Flow Of Print Signals

    Part 4: Technical Reference BJC-6000 1.3 Flow of Print Signals The following outlines the flow of signals as the printer receives data from the host computer and prints it. a) The data from the host computer that contains control commands will be fed into the printer controller via the parallel interface, which is controlled by the printer controller, on the control board.

  • Page 76: Print Driving

    Part 4: Technical Reference BJC-6000 1.4 Print Driving The printer sends the control signals to the head in order to allow the head to discharge ink for printing. These signals consist of the drive control signals that cause ink to be discharged from the head nozzles, and the thermal control signal that controls the head temperature to ensure constant ink discharge.
  • Page 77 Part 4: Technical Reference BJC-6000 b) Color/Photo BJ cartridge control The Color/Photo BJ cartridge has 144 (48 x 3) nozzles. Each nozzle has two heater boards in an array, large and small, one in front, the other in the rear. The front and rear two heaters will be controlled to provide multi-drop driving, with both driven simultaneously to discharge a large drop, or with only the small one driven to discharge a small drop.

  • Page 78: Print Drive Method

    Part 4: Technical Reference BJC-6000 1.4.2 Print drive method The head can be driven in one of the following six drive methods: 180 x 180 dpi (large dot), 360 x 360 dpi (large dot), 360 x 360 dpi (multi-drop drive), 360 x 360 dpi (large- large dot), 720 x 720 dpi (small dot), and 1440 x 720 dpi (small dot) with the drive method differing depending on whether printing is in the forward or reverse direction.
  • Page 79 Part 4: Technical Reference BJC-6000 b) 180 x180 dpi (large dot, forward direction) control mode In this mode, only 8 out of 16 nozzles in one block will be heated. This allows the carriage to travel faster than it would if all 16 nozzles were heated, resulting in faster printing.
  • Page 80 Part 4: Technical Reference BJC-6000 g) Reverse direction print mode In the reverse direction print mode, printing takes place similarly, except that the nozzles are heated in the reverse order. As such, the signals (ODD/EVEN, BENB) that determine the heating order are driven with timing reversed from that used in forward direction printing.

  • Page 81: Power-Off Sequence Flowchart

    Part 4: Technical Reference BJC-6000 1.5 Power-Off Sequence Flowchart Beeper sounds once I/F busy set Indicator blinks Error reset • No cartridge When BJ cartridge or ink • Capping in progress tank is replaced while • While replacing cartridges, neither of the replacing cartridge two cartridges is in place.

  • Page 82: Firmware

    Part 4: Technical Reference BJC-6000 2. FIRMWARE 2.1 Interface This printer's interface supports compatible mode, nibble mode, and ECP mode in compliance with the IEEE 1284 Parallel Interface Standards. The compatible mode is a uni-directional data transfer protocol similar to the Centronics interface conventional protocol.

  • Page 83: Nibble Mode

    Part 4: Technical Reference BJC-6000 2.1.2 Nibble mode The Nibble mode is used to transfer data to the host computer. It is in this mode that the printer sends the printer status data to the host computer. Four input control signals are used for data transfer with handshake between the PtrClk and HostBusy signals.

  • Page 84: Ecp Mode

    Part 4: Technical Reference BJC-6000 2.1.3 ECP mode The ECP mode allows data to be transferred bi-directionally between the printer and host computer. This mode also allows 2 byte data transfer to provide faster data transmission and reception. It is for this reason that ECP mode is suitable for transferring large amounts of data.

  • Page 85: Print Control

    Part 4: Technical Reference BJC-6000 2.2 Print Control 2.2.1 Print mode The printer adjusts the carriage action and paper feed action according to the installed cartridges, selected print media, printing quality, print data, etc. to ensure high quality printing free from diffusion and density variations. Multiple passes are used to provide staggered print timing with multiple nozzles used to print one luster, so that the quantities of discharge that vary from nozzle to nozzle will be smoothed out to minimize density variations.
  • Page 86 Part 4: Technical Reference BJC-6000 TABLE 4-1 PRINT MODE LIST Regular Color Ink System (Black/Color BJ Cartridge) Standard Standard Printing High speed High quality Highest quality (for speed) (for quality) mode Resolution Paper 180 x 180 (L) 360 x 360 (L) 360 x 360 (L) 360 x 360 (L/S) 720 x 720 (S)

  • Page 87: Automatic Printing Position Alignment Function

    Part 4: Technical Reference BJC-6000 2.3 Automatic Printing Position Alignment Function This printer features the automatic printing position alignment function so that the difference between the installed left and right BJ cartridges in vertical/horizontal printing position and bi-directional printing position will be automatically adjusted. After the automatic printing position adjustment patterns are printed, each under slightly different conditions, Automatic Printing Position Alignment is performed through the reflection of the patterns by the print position sensor, comprised of a red...

  • Page 88: Pause Between Scanning

    Part 4: Technical Reference BJC-6000 2.4 Pause Between Scanning This printer features pause between-scanning to prevent bleeding and white clouding be caused by differences in characteristics between color ink and black ink. This function allows the border between the color ink and black ink to be detected during internal print data processing so that, when detected, an appropriate pause will be imposed on each print mode and color to prevent bleeding.

  • Page 89: Printer's Mechanical System

    Part 4: Technical Reference BJC-6000 3. PRINTER'S MECHANICAL SYSTEM 3.1 Overview The printer's mechanical system is comprised of the BJ cartridges, carriage unit, purge unit, paper-feed unit, and drive switching unit. The following describes each of these units: Carriage Unit Paper Feed Unit Drive Switching Unit Purge Unit...

  • Page 90: Purge Unit

    Part 4: Technical Reference BJC-6000 3.1.3 Purge unit The purge unit, driven by the paper feed motor, is comprised of the wiper, pump, cap, and carriage lock unit. The wiper unit keeps the BJ cartridge head face in good condition to ensure high quality printing while the suction function ensures that the ink in the nozzle can be easily discharged.

  • Page 91: Bj Cartridge

    Part 4: Technical Reference BJC-6000 3.2. BJ Cartridge 3.2.1 Construction of the Black BJ cartridge The Black BJ cartridge has a 160-nozzle multi-drop bubble jet head and a detachable black ink tank. a) Air path Keeps the pressure inside the ink tank constant with the external atmospheric pressure.
  • Page 92 Part 4: Technical Reference BJC-6000 3.2.2 Construction of the Color and Photo BJ cartridges Color and Photo BJ Cartridges come equipped with a multi-drop bubble jet head comprised of 48 nozzles for each of the three colors, for a total of 144 nozzles, and have separate, detachable ink tanks, one for each color.

  • Page 93: Construction Of The Bubble Jet Head Unit

    Part 4: Technical Reference BJC-6000 3.2.3 Construction of the bubble jet head unit a) Bubble jet nozzle Ink absorbed in the ink sponge will be filtered through the mesh ink filter, then fed to the bubble jet nozzles via ink pipes. When the head drive current passes through a heater board in a nozzle, the ink will boil, producing bubbles.
  • Page 94 Part 4: Technical Reference BJC-6000 b) Nozzle arrangement The bubble jet nozzles are lined up vertically at 1/360 inch pitch in one column. Color and Photo BJ cartridge have 8 dummy nozzles separating the nozzles of each color. Black BJ Cartridge Photo BJ Cartridge Color BJ Cartridge 160th nozzle...
  • Page 95 Part 4: Technical Reference BJC-6000 TABLE 4-2 SIGNAL CONTACTS Pin No Signal IN/OUT Function 1, 2, 3 Head drive voltage (VH) 4, 6 SUBH0 Sub-heater drive signal (SUBH1) 5 ,7, 8, 10 GND for Head drive voltage (VHGND) HDATA0 IN/OUT Serial data (including head identification and rank resistance) (HDATA1) sent in synchronization with the clock signal (H_CLK)
  • Page 96 Part 4: Technical Reference BJC-6000 d) Cartridge identification This printer uses 5 signals, HCLOCK (Pin 13), HDATA (Pin 9), HLAT (Pin 19), HRSTX (Pin 29), and DIR (Pin 28) to communicate serially with the bubble jet head to identify the installed BJ cartridge and the head rank. Bubble jet head heater characteristics are classified into 24 types according to the variations associated with the manufacturing process.

  • Page 97: Purge Unit

    Part 4: Technical Reference BJC-6000 3.3 Purge Unit 3.3.1 Function of the purge unit The purge unit keeps the BJ cartridge nozzles in good working condition to ensure high printing quality. The unit is designed to provide both capping and cleaning functions.

  • Page 98: Construction Of The Purge Unit

    Part 4: Technical Reference BJC-6000 3.3.2 Construction of the purge unit Wiper Release Unit Wiper Unit Cap Unit Carriage Lock Unit Purge Drive Gear Pump Unit Air Valve Unit Figure 4-20 Purge Unit a) Purge drive gear Receives the power of the feed roller driven by the paper feed motor via the drive switching unit to drive the pump.
  • Page 99 Part 4: Technical Reference BJC-6000 d) Pump The pump is a tube pump type that applies the pressure of turning rollers to the ink tube to create negative pressure for sucking ink. Applying the pressure of two turning rollers alternately allows greater control over the amount of ink to be sucked, and helps to reduce the size of the pump unit.

  • Page 100: Paper Feed Unit

    Part 4: Technical Reference BJC-6000 3.4 Paper Feed Unit 3.4.1 Functions of the paper feed unit a) Paper feed function This printer has two paper supply methods, using the auto-sheet feeder in automatic paper feed mode, or the manual feed slot. The built-in auto-sheet feeder, driven by the paper feed motor and loaded with paper, supplies paper into the printer automatically.
  • Page 101 Part 4: Technical Reference BJC-6000 b) Paper thickness adjustment The clearance between the head face of the BJ cartridge and the paper varies with the thickness of the paper. Smaller clearance improves the printing quality however, paper contacting the head face risks spoiling print quality or damaging the BJ cartridge head face.

  • Page 102: Construction Of The Paper Feed Unit

    Part 4: Technical Reference BJC-6000 3.4.2 Construction of the paper feed unit This printer's paper feed unit is mechanically comprised of the pick-up unit, paper feed unit, and the paper eject unit. a) Pick-up unit Pick-up Roller Paper Pick-up Hook Pick-up Corner Pick-up Guide Manual Paper Feeding...
  • Page 103 Part 4: Technical Reference BJC-6000 To manually feed paper, the user must insert the paper into the manual feed slot until the paper end sensor detects it. In the manual paper feed mode, the pick-up guide changes its position for the paper to pass through a different path from that in which the auto-sheet feeder is used.

  • Page 104: Carriage Unit

    Part 4: Technical Reference BJC-6000 3.5 Carriage Unit 3.5.1 Functions of carriage unit a) Mounting BJ cartridges The carriage secures BJ cartridges mechanically in place and connects them via the carriage ribbon cable to the control board. When the printer is powered off, the carriage will be locked in the capping position.

  • Page 105: Construction Of The Carriage Unit

    Part 4: Technical Reference BJC-6000 3.5.2 Construction of the carriage unit BJ Cartridge Mount Carriage Ribbon Cable Home Position Edge Carriage Lock Position Edge Signal Contacts Carriage Belt Carriage Motor Figure 4-26 Carriage Unit a) BJ cartridge mount BJ cartridges are secured to the carriage with the BJ cartridge lock lever. When a BJ cartridge is secured in place to the carriage, the carriage board signal contact pad contacts the BJ cartridge signal contacts, allowing print signals to be transmitted from the control board.
  • Page 106 Part 4: Technical Reference BJC-6000 c) BJ cartridge maintenance By controlling the carriage position, wiping and cleaning operations will be performed on the BJ cartridge. During capping, as the carriage travels left to right, the notch on the carriage causes the purge section wiper flag to move, raising the wiper and capping the cartridge.
  • Page 107 Part 4: Technical Reference BJC-6000 d) Paper feed motor drive switching unit Depending on the carriage position, the drive switching unit switches the paper feed motor's drive power over to drive the purge unit or the auto-sheet feeder. The slide arm that travels in sync with the carriage action controls the operation of the selector flag.

  • Page 108: Printer's Electrical System

    Part 4: Technical Reference BJC-6000 4 PRINTER'S ELECTRICAL SYSTEM 4.1 Overview The electronics of this printer can be functionally divided into the control unit and the power supply unit. The control section converts the input data from the host computer into print signals or printer control signals, and drives the BJ cartridges and motors while monitoring all the sensors.

  • Page 109: Control Unit

    Part 4: Technical Reference BJC-6000 4.2 Control Unit 4.2.1 Control unit block diagram Control Board Address Bus A1 - A21 Data Bus D0 - D15 20MHz C51~53 PE0,2 25MHz Ink Sensor Cover Sensor RAS,CAS DRAM DRAM Bus 16-Mbit MA0~9 Internal Temperature A0~9 SensorTH201...

  • Page 110: Logic Components

    Part 4: Technical Reference BJC-6000 4.2.2 Logic Components RESUME Switch Cover Sensor POWER Switch CN401 Printer Controller EEPROM DRAM TH201 Buzzer Motor Driver Paper End Sensor Figure 4-33 Control Board a) Printer controller The printer controller incorporates the interface controller, print head controller, buffer controller, DRAM controller, stepping motor controller and I/O ports and operates in sync with the 25MHz external clock input.
  • Page 111 Part 4: Technical Reference BJC-6000 Buffer controller Writes the received data into the DRAM's receive buffer automatically, controls the remaining receive buffer capacity, reads the print buffer automatically, and clears the data that has been read. The print buffer manages two separate areas for the 2 heads.
  • Page 112 Part 4: Technical Reference BJC-6000 A/D converter Detects the following analog signals: Internal temperature analog signal from the thermistor on the control board. Head temperature analog signal from the temperature sensors inside the BJ cartridge. Ink chamber ink detection analog signal from the ink sensor. Density detection signal from the print position sensor for printing position compensation.

  • Page 113: Power Supply Unit

    Part 4: Technical Reference BJC-6000 4.3 Power Supply Unit 4.3.1 Power Supply Unit Block Diagram Carriage Motor (VM) +24V DC Paper Feed Motor (VM) BJ Cartridge (HVH) AC100V HVCONT(+24VDC output control signal) +5V DC Control ROM DRAM RGV3/inRGV3) +5V DC +5V DC(RGM5/RGV5I) Print Position Sensor (VSEN) Home Position Sensor (VSEN)

  • Page 114: Detection Functions

    Part 4: Technical Reference BJC-6000 5. DETECTION FUNCTIONS 5.1 Detection with Sensors This printer has the following sensors detect the printer's status. Cover Sensor Paper End Sensor Internal Temperature Pump Sensor Sensor Print Position Sensor Home Position Sensor Ink Sensor Figure 4-35 Sensor Positions 5.1.1 Home position sensor This photointerruptor-type sensor detects the chassis' home position edge and...

  • Page 115: Ink Sensor

    Part 4: Technical Reference BJC-6000 5.1.4 Ink sensor Consists of an LED and photosensor to optically check for ink in the ink chamber part of the ink tank. At the ink chamber bottom is a protrusion that acts as a prism. If ink is present in the chamber, the refraction rates of ink and the prism resin are nearly equal, producing less reflection.

  • Page 116: Head Temperature Sensor

    Part 4: Technical Reference BJC-6000 5.1.8 Head temperature sensor Located inside the print head in the BJ cartridge, this sensor detects the head temperature so that the printer can stop printing when this sensor detects an abnormal temperature rise in the head as a head temperature abnormal error. The diode sensor output varying with the head temperature is detected as a varying voltage, so the incoming analog values are converted into digital values by the built-in A/D converter.

  • Page 117: Part 5: Maintenance

    Part 5 MAINTENANCE Page 5 - 1 1. MAINTENANCE 5 - 1 1.1 Parts for Periodic Replacement 5 - 1 1.2 List of Consumables 5 - 1 1.3 List of Periodic Maintenance 5 - 2 2. SERVICE TOOLS 5 - 2 2.1 List of Tools 5 - 3 3.

  • Page 119: Maintenance

    Part 5: Maintenance BJC-6000 1. MAINTENANCE 1.1 Parts for Periodic Replacement Level Parts for periodic replacement User None Service personnel None 1.2 List of Consumables (for details, see Part 2: 1-5 Consumables (page 2-5) Level Consumable User Black BJ cartridge Color BJ cartridge Photo BJ cartridge Black ink tank for the Black BJ cartridge...

  • Page 120: Service Tools

    Part 5: Maintenance BJC-6000 2. SERVICE TOOLS 2.1 List of Tools Ordinary Tools Note Phillips screwdriver For removing and replacing screws Phillips screwdriver For removing and replacing screws for the control board (about 38 mm long) Blade screwdriver For removing plastic parts Long-nose pliers For removing and replacing springs Tweezers...

  • Page 121: Applying Grease

    Part 5: Maintenance BJC-6000 3. APPLYING GREASE Apply greases at the points shown below. Apply a thin film of grease using the flat brush. For the Carriage Oil Pad, do not use a brush but apply directly. For disassembly and reassembly procedures, refer to the parts catalog. Be careful not to contaminate wipers or caps with grease.

  • Page 122: Disassembly And Reassembly

    Part 5: Maintenance BJC-6000 4. DISASSEMBLY AND REASSEMBLY 4.1 Disassembly and Reassembly When disassembling or reassembling the printer, refer to the parts catalog. The numbers in the parts catalog illustrations indicate the disassembly sequence. The parts catalog also contains close-up diagrams for parts requiring special care during disassembly or reassembly.

  • Page 123: Removing The Printer Unit

    Part 5: Maintenance BJC-6000 4.2.2 Removing the printer unit Refer to Figure 5 (page B-9) of the parts catalog. 1) Set the paper thickness lever to its lowest position (envelope position). 2) Press the locking tab on the right side of the printer in the direction of arrow 1 and slightly lift the right side of the printer unit in the direction of arrow 2, resting it on the boss.

  • Page 124: Removing The Asf Unit

    Part 5: Maintenance BJC-6000 4.2.3 Removing the ASF unit The ASF unit is attached to the printer unit such that the ASF driving gear and the pick-up roller are matched in phase. Once you removed the assembly screws, painted red to protect against careless removal, which fasten the ASF unit to the printer frame, you must readjust the position of the ASF gear with respect to that of the pick- up roller.

  • Page 125: Paper Feed Gears

    Part 5: Maintenance BJC-6000 4.2.5 Paper feed gears Be careful not to touch the gears in the paper feed unit, especially the paper feed gear, during disassembly or reassembly, because even slight damage to it could affect paper feeding when printing at high resolution. Eject Roller Gear Feed Roller Gear Figure 5-6 Feed Gear Unit Precautions...

  • Page 126: Adjustments And Settings

    Part 5: Maintenance BJC-6000 5. ADJUSTMENTS AND SETTINGS 5.1 Adjustments and Settings 5.1.1 EEPROM setting 1) When the control board is replaced (see Figure 4 of the parts catalog). 2) When the waste ink absorber is replaced (see Figure 6 of the parts catalog). 5.1.2 Carriage belt tension adjustment When the carriage belt is loosened (see Figure 8 of the parts catalog).

  • Page 127: Adjustment/Setting Procedures

    Part 5: Maintenance BJC-6000 5.2 Adjustment/ Setting Procedures 5.2.1 EEPROM setting The EEPROM (IC602) on the control board stores total amount of waste ink absorbed, function settings, and other information specific to the printer. If you have replaced the control board, you must initialize the EEPROM of the new control board and change its data as necessary.

  • Page 128: Asf Gear Position Adjustment

    Part 5: Maintenance BJC-6000 5.2.3 ASF gear position adjustment Preparation: 1) Reassemble the ASF unit components to the level as when the ASF unit was detached. Adjustment procedure: 1) Set the gear key special tool (QY9-0038-000) to the paper eject roller gear. 2) Turn the gear key half a turn in the direction of arrow 1.

  • Page 129: Head Gap Adjustment

    Part 5: Maintenance BJC-6000 5.2.4 Head gap adjustment Preparation: 1) Reassemble to the level the top cover is to be put on next. 2) Raise both the right and left adjustable bearings supporting the carriage shaft in the direction of arrow 1, and temporarily fix the bearings in that position using the fixing screws (red).
  • Page 130 Part 5: Maintenance BJC-6000 Adjustment procedure: 1) Set the 1.9-mm gap gauge (QY9-0038) in position A. 2) Move the carriage into position C by moving the carriage belt by hand. 3) Install the Black BJ cartridge on the left side of the carriage. 4) Slowly loosen, by half a turn, the fixing screw that secures the left adjustable bearing supporting the carriage shaft, and move the paper thickness lever up and down two or three times, and tighten the fixing screw.

  • Page 131: Troubleshooting

    Part 5: Maintenance BJC-6000 6. TROUBLESHOOTING 6.1 Troubleshooting Overview 6.1.1 Overview This chapter consists of two sections: diagnosis and action. If you do not know the possible cause of the problem, consult the diagnosis section first. If you know the possible cause of the problem, skip to the action section.
  • Page 132 Part 5: Maintenance BJC-6000 5. A step in the flowcharts may indicate more than one possible measure you can take. Make a test print for each measure you have taken to check that the problem is corrected. If the measure still fails to correct the problem, proceed to the next measure.

  • Page 133: Diagnosis

    Part 5: Maintenance BJC-6000 6.2 Diagnosis 6.2.1 Initial flowchart Plug in the AC cord • The printer is supplied with AC power. MPU/printer controller initialization ROM check DRAM check Ink sensor/waste ink full/printer temperature sensor (TH201) check Read EEPROM • The POWER button is pressed. Turn power on One beep Indicator blinks...
  • Page 134 Part 5: Maintenance BJC-6000 From previous page Error check • 10 beeps, indicator blinks in EEPROM error orange 3 times (See page 5-18) • 10 beeps, indicator blinks in ROM error orange 1 time (See page 5-18) • 10 beeps, indicator blinks in RAM error orange 2 times (See page...
  • Page 135 Part 5: Maintenance BJC-6000 From previous page BJ cartridge check Cleaning Check for open cover • Is the cover open? Open Open/closed Carriage moves to • Cartridge installed cartridge replacement • Cartridge not detected position Closed • Cartridge not installed correctly •...

  • Page 136: Ram Error

    Part 5: Maintenance BJC-6000 6.2.2 Action a) Error indications <Cause> ROM cannot be read during initialization. 1. ROM Error <Suspected parts> Control ROM <Measure> Replace the ROM or control board. <Cause> RAM cannot be read or written. 2. RAM Error <Suspected parts>...

  • Page 137: Home Position

    Part 5: Maintenance BJC-6000 <Cause> The home position sensor fails to detect the home 4. Home Position position. <Suspected parts> Error Home position sensor, carriage motor, paper feed motor, control board, carriage ribbon cable, and carriage board <Measure> Visual check Repair or replace faulty part Open the cover and...
  • Page 138 Part 5: Maintenance BJC-6000 From previous page Visually check operation of paper feed unit Check the paper feed motor Measurement points Normal value CN403 Approx.3 Disconnect the paper feed motor cable from the control board before checking. Replace the paper feed motor To page 5-21 (1)
  • Page 139 Part 5: Maintenance BJC-6000 HVCONT (+24 VDC output control signal) HVCONT check for output (CN401). +5VDC HVCONT +24VDC Replace the control board • Check for +24 VDC during operation (CN401). +24 VDC output check • No +24 VDC is output when the carriage is at the cartridge replacement position or if an error occurs.
  • Page 140 Part 5: Maintenance BJC-6000 <Cause> The thermistor is defective. 5. Temperature <Suspected parts> Thermistor <Measure> Sensor Error Replace the control board. <Cause> The calculated amount of waste ink absorbed has 6. Waste Ink Full exceeded the capacity of the waste ink absorber. <Suspected parts>...
  • Page 141 Part 5: Maintenance BJC-6000 <Cause> The print head is too hot. 7. Head <Suspected parts> BJ cartridge, control board Temperature Error/Head Temperature Sensor Error <Measure> It is possible the BJ cartridge head unit Leave the printer for several has overheated. minutes with power off Turn power on Error...
  • Page 142 Part 5: Maintenance BJC-6000 <Cause> The BJ cartridge is out of position at other than the 8. Cartridge cartridge replacement position. Displaced <Suspected parts> BJ cartridge, control board, carriage Error board, carriage ribbon cable <Measure> Remove and reinstall both BJ cartridges Error indication? 1.

  • Page 143: Paper Feed

    Part 5: Maintenance BJC-6000 <Cause> • Paper feed operation fails to feed paper. 9. Paper Feed • Paper eject operation fails to eject paper. <Suspected parts> Paper feed section, paper end sensor, Error control board <Measure> Visually check the paper Check for jammed paper or deformed/ feed unit damaged/broken gears.
  • Page 144 Part 5: Maintenance BJC-6000 ASF Feed Path Paper From previous page Paper End Sensor Sensor Flag Manual Feed Path Using paper, check the arm for smooth Check the paper motion, deformation, or damage. end sensor's arm Replace the sensor Measurementpoints Sensor Normal value Paper sensor check...
  • Page 145 Part 5: Maintenance BJC-6000 <Cause> • The ink tank is empty. • EEPROM is defective. 10. Ink Out Error <Suspected parts> Ink tank, EEPROM <Measure> Visually check that the ink tanks are installed Install ink tanks Replace the control board 5-27...

  • Page 146: Bj Cartridge

    Part 5: Maintenance BJC-6000 <Cause> • BJ cartridge not detected. 11. BJ Cartridge • BJ cartridge not installed. • BJ cartridge combination wrong. Error/BJ <Suspected parts> BJ cartridges, carriage board, control Cartridge Mis- board, carriage ribbon cable, contacts installed between BJ cartridge and carriage Error/No BJ Cartridge Error <Measure>...

  • Page 147: Head Position

    Part 5: Maintenance BJC-6000 <Cause> 12. Automatic The automatic head position adjustment has failed. <Suspected parts> BJ cartridge, ink tank, print position Head Position sensor, control board Adjustment Error <Measure> Is the automatic head position adjustment pattern correctly printed? 1. Cleaning 2.
  • Page 148 Part 5: Maintenance BJC-6000 b) Phenomena <Symptoms> • Pressing the POWER button fails to switch on 1. Power Does the printer. • Pressing the POWER button does not start Not Turn On. initialization. <Cause> The AC adapter or the control board is defective. <Measure>...
  • Page 149 Part 5: Maintenance BJC-6000 <Symptoms> • No prints 2. Faulty • Partial prints Printing: No • No prints for some colors <Cause> The ink tank, BJ cartridge, or purge unit is defective. Printing <Measure> Perform the cleaning operation 5 times. Cleaning operation Nozzle check pattern See Part 3: 3.5.2 Nozzle check pattern printing...
  • Page 150 Part 5: Maintenance BJC-6000 <Symptoms> • Blurred prints 3. Faulty • Blank lines Printing: Blank • Specific dot missing Lines Appear <Cause> The BJ cartridge(s), BJ cartridge contact(s), carriage ribbon cable, purge unit, control board or carriage board is defective. <Measure>...
  • Page 151 Part 5: Maintenance BJC-6000 From previous page 1. Replace the carriage ribbon cable 2. Replace the carriage board 3. Replace the control board Replace the purge unit 5-33...
  • Page 152 Part 5: Maintenance BJC-6000 4. Faulty Printing: Other Symptoms Check to see if Measure Paper gets dirty The platen is contaminated with Wipe clean with a damp cloth. ink mist. The paper feed unit is Disassemble the paper feed unit contaminated with ink (paper is and wipe clean with damp a contaminated before reaching the...

  • Page 153: Ink Out

    Part 5: Maintenance BJC-6000 <Symptoms> Ink out results in no error. 5. Ink Out <Cause> The ink tank is empty, or the control board or ink sensor is defective. Resulting in no Error <Measure> No ink tank? Any loose ink tank? Ink Visually check the ink chamber empty? tanks...
  • Page 154 Part 5: Maintenance BJC-6000 7. CONNECTOR POSITIONS AND PIN ASSIGNMENT 7.1 Control Board CN401 Figure 5-11 Control Board CN404 (parallel interface connector) Pin No Signal IN/OUT Function STROBE Part 2: 2.3 Interface Specifications (page 2-10). DATA 1 IN/OUT DATA 2 IN/OUT DATA 3 IN/OUT...
  • Page 155 Part 5: Maintenance BJC-6000 CN401 (DC power connector) Pin No. Signal IN/OUT Function +5V DC HVCONT +24 VDC output control signal +24V DC CN402 (Carriage motor connector) Pin No. Signal IN/OUT Function Carriage motor phase A Carriage motor phase B Carriage motor phase A Carriage motor phase B CN403 (Paper feed motor connector)
  • Page 156 Part 5: Maintenance BJC-6000 CN502 (Carriage ribbon cable connector) Pin No. Signal IN/OUT Function HCLOCK0 IN/OUT Clock signal for serial data transmission 2, 4, 9, HDATA0 IN/OUT Serial data (left cartridge) sent in sync. with the clock signal HSEL1A0 Rear nozzle heater select signal for upper nozzles (1-8, 17-24, ..., 145-152) HSEL1B0 Front nozzle heater select signal for lower nozzles (9-...
  • Page 157 Part 5: Maintenance BJC-6000 CN602 (Pump sensor connector) Pin No. Signal IN/OUT Function POMP Pump sensor sense signal High (sense) /Low CN603 (Ink sensor connector) Pin No. Signal IN/OUT Function INKS01 Voltage output from the ink sensor INKS Ink sensor's LED drive signal 5-39...
  • Page 158 Part 5: Maintenance BJC-6000 7.2 Carriage Board Figure 5-12 Carriage Board CN1 (Carriage ribbon cable connector) Pin No. Signal IN/OUT Function 1, 2, 3 LGND GND for logic power supply. 4, 5, 6 HVDD Head logic drive voltage 7~14 HGND GND for head drive voltage (VH) 15, 16, 17 SUBH1...
  • Page 159 Part 5: Maintenance BJC-6000 CN2 (Carriage ribbon cable connector) Pin No. Signal IN/OUT Function Not used. REGC Voltage output from the print position sensor REGA Print position sensor's LED drive voltage Home position sensor sense signal Home position sensor pull-up voltage DIK0 Head temperature (diode) sensor's cathode line DIA0...
  • Page 160 Part 5: Maintenance BJC-6000 CN3 (Carriage ribbon cable connector) Pin No. Signal IN/OUT Function Not used N.C. N.C. DIK1 Head temperature (diode) sensor's cathode line DIA1 Head temperature (diode) sensor's anode line SNSG 6, 8 HENB5 Front heater drive signal for nozzles 1-160 7, 9 HENB4 Rear heater drive signal for nozzles 1-160...
  • Page 161 Part 5: Maintenance BJC-6000 7.3 BJ Cartridge 24 20 16 12 22 18 14 10 23 19 15 11 21 17 13 9 Figure 5-13 BJ Cartridge Pin No. Signal IN/OUT Function 1, 2, 3 Head drive voltage (VH) 4, 6 SUBH0 Sub-heater drive signal (SUBH1)

  • Page 162: Ac Adapter

    Part 5: Maintenance BJC-6000 7.4 AC Adapter Figure 5-14 AC Adapter Pin No. Signal IN/OUT Function +24V DC +5V DC HVCONT +24 V control signal 7.5 DC Power Supply Cable Figure 5-15 DC Power Supply Cable Pin No. Signal IN/OUT Function +5V DC HVCONT...

  • Page 163: Carriage Motor

    Part 5: Maintenance BJC-6000 7.6 Carriage Motor Figure 5-16 Carriage Motor Pin No. Signal IN/OUT Function Carriage motor phase A Carriage motor phase B Carriage motor phase A Carriage motor phase B 7.7 Paper Feed Motor Figure 5-17 Paper Feed Motor Pin No.

  • Page 164: Ink Sensor

    Part 5: Maintenance BJC-6000 7.8 Ink Sensor Figure 5-18 Ink Sensor Pin No. Signal IN/OUT Function INKS01 Voltage output from the ink sensor N.C. 7.9 Print Position Sensor Figure 5-19 Print Position Sensor Pin No. Signal IN/OUT Function REGA Print position sensor's LED drive voltage SNSG REGC Voltage output from the print position sensor...

  • Page 165: Circuit Diagrams

    Part 5: Maintenance BJC-6000 8. CIRCUIT DIAGRAMS 8.1 Parts Layout 8.1.1 Control board Figure 5-21 Control Board 5-47...

  • Page 166: Carriage Board

    Part 5: Maintenance BJC-6000 8.1.2 Carriage board Figure 5-22 Carriage Board 5-48...
  • Page 167 BJC-6000 Part 5: Maintenance 8.2 Circuit Diagrams CONTROL BOARD VSEN1 Ink Sensor Q605 CN603 R611 150.1/4W Q608 FA1L4M FN1A4P REG1 R618 110K,1/16W <03-B5> R613 1K,1/16W C608 RGV5 0.1m,25V R207 Temperature RGV3 TH201 47K,0.064W,D RGV5 Sensor TBPS1473J475H5Q RESX <02-A6> C206 C205 0.1m,25V 0.01m,50V C609...
  • Page 168 BJC-6000 Part 5: Maintenance CONTROL BOARD 02 PF<1..0> LFCNT<2..0> <04-B3> CRCNT<2..0> <04-C3> MRESTX <04-B3> PD<8..0> <04-,F8> 2 1 0 8 7 6 5 4 3 2 1 0 inRGV3 RGV5 RGV3 RGV5 2 1 0 RGV3 C317 C316 0.1m,25V 1000p,50V HEADCONT<26..0>...
  • Page 169 BJC-6000 Part 5: Maintenance CONTROL BOARD HEADCONT<26..0> HEAD 0 CN501 <02-E2> CN502 HEADCONT<26..0> <02-E2> FK2125T356AL HCLOCK0 FB501 FB502 FK2125T356AL HDATA0 ZD502 FB510 HVDD R501 Q503 BK1608HS601 100,1/16W HSEL1A0 FB511 BK1608HS601 NNCD6.8G HSEL1B0 SUBH0 HSEL2A0 HSEL2B0 R502 ZD503 100,1/16W SUBH1 FB503 HALT 0.1A UPA1755G...
  • Page 170 BJC-6000 Part 5: Maintenance CONTROL BOARD IFD<7..0> RGV51 RGV5 <02-B3> CN404 FB401 RA401 RA403 RGV51 FB405 CNPS BK321645601 10,0.063W, I,4,IND R401 RAC164N332JA 0.2A 0.1A C401 ZD401 100m,35V RD6,8583 Q401 R402 FA1L4H HVCONT 100,1/16W,1608 VHC PW C +SV-GND RA402 RA405 FB402 RAC164N332JA +24V BK321645601...
  • Page 171 BJC-6000 Part 5: Maintenance CARRIAGE BOARD 220m,35V 220m,35V 0.1m,50V SUBH1 SUBH0 LGND SUBH0 LGND HGND LGND HDATA0 HCLOCK0 HGND LGND HSEL1B0 HDATA0 HVDD LGND HCLOCK0 HSEL1A0 LGND HSEL1B0 HSEL1A0 HUDD HSEL2A0 LGND HSEL2B0 HSEL2A0 LGND HSEL2B0 HLAT HLAT LGND EVEN EVEN 0.1m,50V BENB0...
  • Page 174 The printing paper contains 70% waste paper. PRINTED IN JAPAN (IMPRIME AU JAPON) CANON INC.

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