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Canon BJC-5000 Service Manual
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Canon BJC-5000 Service Manual

Canon BJC-5000 Service Manual

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

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  • Page 1 REVISION 0 QY8-1359-000 AUGUST. 1998 COPYRIGHT © 1998 CANON INC. CANON BJC-5000 0898 SC 0.55-0 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 2 0898 SC 0.55-0...
  • Page 4 When changes occur in applicable products or in the content of this manual, Canon will release technical information as the need arises. In the event of major changes in the contents of this manual over a long or short period, Canon will issue a new editions of this manual.
  • Page 5 I. ABOUT THIS MANUAL This manual is divided into four sections, and contains information required for servicing the unit. Part 1: Safety and Precautions This section tells you how to service the unit safely. It is very important, so please read it.

  • Page 6: Table Of Contents

    II. TABLE OF CONTENTS Part 1: Safety and Precautions Page 1 - 1 1. SAFETY PRECAUTIONS 1 - 1 1.1 Moving Parts 1 - 2 1.2 Ink Stains 1 - 2 1.2.1 Ink path 1 - 3 1.2.2 Ink mist 1 - 4 1.3 BJ Cartridge Heat-Up 1 - 5...
  • Page 7 Part 3: Operating Instructions Page 3 - 1 1. PRINTER SETUP 3 - 1 1.1 Unpacking and Inspection 3 - 2 1.2 Site Selection 3 - 3 1.3 Setup Procedure 3 - 3 1.3.1 Connecting the interface cable 3 - 3 1.3.2 Connecting the AC power cord 3 - 4 1.3.3 Turning on the printer...
  • Page 8 Page 4 -14 2.7 Head Overheating Protection Control 4 -14 2.8 Auto Power-Off 4 -15 3. PRINTER MECHANICAL SYSTEM 4 -15 3.1 Overview 4 -15 3.1.1 Mechanical components 4 -17 3.2 BJ Cartridge 4 -17 3.2.1 Black BJ cartridge structure 4 -18 3.2.2 Color BJ cartridge structure 4 -19...
  • Page 9 Page 5 - 8 5. ADJUSTMENTS 5 - 8 5.1 Adjustment Point 5 - 8 5.2 When Adjustment is Required 5 - 8 5.2.1 Tools required for adjustment 5 - 9 5.3 Adjustment Procedure 5 - 9 5.3.1 Preparation 5 -10 5.3.2 Adjustment 5 -12 6.
  • Page 10 III. ILLUSTRATION INDEX Page 1 - 1 Figure 1- 1 Moving Parts of the Printer 1 - 2 Figure 1- 2 Ink Path 1 - 3 Figure 1- 3 Ink Path of the BJ Cartridge 1 - 3 Figure 1- 4 Ink Mist 1 - 4 Figure 1- 5 BJ Cartridge Aluminum Plate 1 - 5...
  • Page 11 Page 4 - 6 Figure 4- 6 Power-Off Sequence Flowchart 4 - 7 Figure 4- 7 Interface Timing (Compatible Mode) 4 - 8 Figure 4- 8 Interface Timing (Nibble Mode) 4 - 9 Figure 4- 9 Interface Timing (ECP Mode) 4 -10 Figure 4- 10 Timing Chart (ECP Mode/Reverse Mode) 4 -15...
  • Page 12 IV. TABLE INDEX Page 3 -10 Table 3- 1 Printer Paper Setting 3 -14 Table 3- 2 Error Indications 3 -18 Table 3- 3 Service Mode 4 -12 Table 4- 1 Printing Modes and Driving Method 4 -22 Table 4- 2 List of BJ Cartridge Signal Contacts 4 -25 Table 4- 3...

  • Page 13: Part 1: Safety And Precautions

    Part 1 SAFETY AND PRECAUTIONS Page 1 - 1 1. SAFETY PRECAUTIONS 1 - 1 1.1 Moving Parts 1 - 2 1.2 Ink Stains 1 - 4 1.3 BJ Cartridge Heat-Up 1 - 5 2. MACHINE PRECAUTIONS 1 - 5 2.1 Handling BJ Cartridges 1 - 7 2.2 Handling Ink Cartridges (Color BJ Cartridge)

  • Page 15: Safety Precautions

    BJC-5000 Part 1: Safety and Precautions 1. SAFETY PRECAUTIONS 1.1 Moving Parts Be careful not to get fingers, hair, clothing, or personal accessories caught in the moving parts of the printer. There are several moving parts, driven by the carriage motor and by the paper feed motor.

  • Page 16: Ink Stains

    Part 1: Safety and Precautions BJC-5000 1.2 Ink Stains 1.2.1 Ink path Do not touch the ink path during repairs or maintenance to avoid getting ink stains on the printer, work table, hands, and clothing. The ink flow path consists of the BJ cartridge nozzles, head cap, head wiper, maintenance jet receiving section, waste ink tube, and waste ink absorber.

  • Page 17: Ink Mist

    BJC-5000 Part 1: Safety and Precautions Black BJ Cartridge Color BJ Cartridge Joint Pipe Ink Outlet Nozzles Ink Outlet Joint Pipe Nozzles Nozzles Figure 1-3 Ink Path of the BJ Cartridge 1.2.2 Ink mist The BJ cartridge ejects ink onto the paper to print. During prolonged or heavy-duty use of the printer, small amounts of ink mist which splatter off the printing paper during printing can be deposited on the inside of the front cover and platen .

  • Page 18: Bj Cartridge Heat-Up

    Part 1: Safety and Precautions BJC-5000 1.3 BJ Cartridge Heat-Up Do not touch the aluminum plate of the BJ cartridge. This aluminum plate heats up during printing. It will become very hot during prolonged and continuous printing sessions or when printing is attempted even after the cartridge has run out of ink. Aluminum Plate Caution! High Temperature! Figure 1-5 BJ Cartridge Aluminum Plate...

  • Page 19: Machine Precautions

    BJC-5000 Part 1: Safety and Precautions 2. MACHINE PRECAUTIONS 2.1 Handling BJ Cartridges 2.1.1 Unpacking the BJ cartridge Do not unpack the BJ cartridge until it is ready to be used. Before installing the BJ cartridge in the printer, remove the protective head caps from the nozzles and peel off the protective tape as shown in the figure below.

  • Page 20: Power On/Off

    Part 1: Safety and Precautions BJC-5000 Black BJ Cartridge Color BJ Cartridge Joint Pipe Ink Outlet Nozzles Ink Outlet Joint Pipe Nozzles Nozzles Figure 1-7 BJ Cartridge 2.1.3 Power on/off When the printer is turned off with the POWER button , the printer automatically caps the nozzles of the BJ cartridge for their protection and to prevent ink leakage.

  • Page 21: Handling Ink Cartridges (Color Bj Cartridge)

    BJC-5000 Part 1: Safety and Precautions 2.2 Handling Ink Cartridges (Color BJ Cartridge) 2.2.1 Unpacking the ink cartridge Do not unpack an ink cartridge until it is ready to be used. Before installing it in the color BJ cartridge, remove the ink cartridge from its’ package and remove the cap that covers the ink outlets.

  • Page 22: Printer Precautions

    Part 1: Safety and Precautions BJC-5000 2.3 Printer Precautions 2.3.1 Preventing deformation of the spur tip Do not touch the tips of the spurs. The spurs transfer and eject the paper after printing. They have a delicate structure and could be easily deformed. Since the tip of the spurs have a very small contact surface with the paper, the ink adhering to the spurs is minimal.

  • Page 23: Ink Leakage Prevention

    BJC-5000 Part 1: Safety and Precautions 2.3.3 Ink leakage prevention Transport, pack, or store the printer with the BJ cartridge installed in the printer. Otherwise, the ink in the purge unit could flow backward and spill out inside the printer. Before packing the printer, make sure the carriage is at the capping position (the right end of the carriage shaft).

  • Page 24: Maintenance Service Precautions

    Part 1: Safety and Precautions BJC-5000 3. MAINTENANCE SERVICE PRECAUTIONS 3.1 EEPROM Data Precautions This printer keeps track of various function settings, the total number of sheets printed, and the total waste ink amount. Such information is stored in the EEPROM on the logic board.

  • Page 25: Static Electricity Precautions

    BJC-5000 Part 1: Safety and Precautions This printer keeps track of the estimated waste ink amount based on the REF. condition of printer usage immediately after the printer is started. To prevent ink leakage due to the waste ink absorption capacity being exceeded, the printer stops printing and displays an error when the waste ink amount nears the full waste ink absorption capacity.

  • Page 26: Disassembly And Assembly Precautions

    Part 1: Safety and Precautions BJC-5000 3.3 Disassembly and Assembly Precautions The printer has a large number of plastic parts. When you disassemble the printer, be very careful not to break or bend the plastic hooks. Some plastic parts are made of highly rigid material containing glass fibers to improve precision.

  • Page 27: 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 - 5 1.4 Dual Cartridge System 2 - 5 1.5 BJ Cartridge Container 2 - 6 1.6 Consumables 2 - 7...

  • Page 29: Product Outline

    BJC-5000 Part 2: Product Specifications 1. PRODUCT OUTLINE 1.1 Product Outline This desktop color printer achieves high-speed printing by means of a dual cartridge system. It also realizes maximum 1440 (vertical) x 720 (horizontal) dpi high-resolution printing by using the printer driver to perform the main data processing. Moreover, this printer achieves high image printing by adopting a “drop modulation technology”...

  • Page 30: Features

    Part 2: Product Specifications BJC-5000 1.2 Features 1. High-speed printing by dual cartridge system 2. High-resolution printing of maximum 1440 (vertical) x 720 (horizontal) dpi 3. Easy-to-replace, high-speed and high-quality printing-compliant BJ cartridge Color BJ Cartridge (BC-21e): Adopts a drop modulation technology. Has separate ink tanks (Bk) (Y+M+C) and head with 136 nozzles in a vertical line;...

  • Page 31: Bj Cartridge

    BJC-5000 Part 2: Product Specifications 1.3 BJ Cartridge 1.3.1 Color BJ cartridge (BC-21e) The color BJ cartridge BC-21e for color printing is disposable. The color BJ cartridge has a printhead with 136 nozzles and a replaceable ink cartridge (two types, black and color).

  • Page 32: Black Bj Cartridge (Bc-20) (Reference)

    Part 2: Product Specifications BJC-5000 1.3.3 Black BJ cartridge (BC-20) (reference) The black BJ cartridge (BC-20) for ultra-high-speed monochrome printing is disposable. The cartridge consists of a printhead with 128 nozzles and an ink cartridge. When the ink runs out or more than 6 months have elapsed since the cartridge was removed from the package, or if the print quality does not improve even after cleaning the head five times or more, replace the BJ cartridge with a new one.

  • Page 33: Dual Cartridge System

    BJC-5000 Part 2: Product Specifications 1.4 Dual Cartridge System This printer has two BJ cartridges installed on the carriage to minimize the moving distance of the carriage during printing and thus improving printing speed. This system is called the dual cartridge system. The BJ cartridge can be used with the following combinations.

  • Page 34: Consumables

    Part 2: Product Specifications BJC-5000 1.6 Consumables 1.6.1 BJ cartridge (Black, Color, Photo) The consumable black BJ cartridge (BC-23 and BC-20 [reference]), color BJ cartridge (BC-21e), and photo BJ cartridge (BC-22e) available in the market are identical to those supplied with the printer. Only their packages are different. Photo BJ Cartridge Color BJ Cartridge Black BJ Cartridge...

  • Page 35: Specifications

    215.9 mm (8.5”) Manual feeding: 290.2 mm (11.4”) 8. Line feed speed Approx. 120ms/line (128/360” line) 9. Built-in printing control mode Canon extended (native) mode 10. Line feed pitch (n: programmable) n/360”, n/720”, n/1440” 11. Buffer Print buffer: Approx. 512kB...
  • Page 36 Part 2: Product Specifications BJC-5000 12. Interface IIEEE 1284-compatible bi-directional parallel interface (Compatible/nibble/ECP modes are supported.) 13. BJ cartridge Color BJ cartridge (BC-21e) Type: Color BJ cartridge with separate ink tanks Printhead: 136 nozzles (vertically-lined), Blk (64 nozzles) + Y, M, C (24 nozzles Ink colors: Black, cyan, magenta, yellow Service life: Approx.

  • Page 37: Paper Specifications

    2.2.2 Paper type Plain paper (Letter, Legal, A3, A4, A5, B4, B5) Color bubble jet paper (Canon Bubble Jet Paper LC-301/Letter, Legal, A3, A4) High resolution paper (Canon High Resolution Paper HR-101/Letter, A3, A4) Glossy photo paper (Canon Glossy Photo Paper GP-201/Letter, A4)

  • Page 38: Cut Sheet Feeder Sheet Loading Capacity

    Part 2: Product Specifications BJC-5000 2.2.3 Cut sheet feeder sheet loading capacity Plain paper: Max. 13 mm (Approx. 130 sheets of 64g/m paper) High resolution paper: Max. 100 sheets OHP film: Max. 30 sheets Back print film: Max. 10 sheets Envelopes: Max.

  • Page 39: Printing Area

    BJC-5000 Part 2: Product Specifications 2.2.4 Printing area A4+ size, Letter+ size A3, A4, A5, B5 size (1)16.0mm 28.0mm 3.0mm 29.3mm (2)20.5mm 29.3mm 20.5mm 28.0mm 16.5mm 5.1mm 5.1mm 3.4mm 3.4mm Letter, Legal, Tabloid size Commercial Number-10 and European DL-size (1)16.0mm 3.0mm 3.0mm (2)20.5mm...

  • Page 40: Interface Specifications

    Part 2: Product Specifications BJC-5000 2.3 Interface Specifications 1) Interface type IEEE1284-compatible bi-directional parallel interface 2) Data transfer 8-bit parallel transfer (Supports the Compatible mode/Nibble mode/ECP mode.) 3) Signal voltage levels Low: 0.0V to +0.8V High: +2.4V to +5.0V 4) Input/output Each signal pulled up with +5V.
  • Page 41 BJC-5000 Part 2: Product Specifications Nibble mode Signal Signal HostClk Signal Gnd Data1 Signal Gnd Data2 Signal Gnd Data3 Signal Gnd Data4 Signal Gnd Data5 Signal Gnd Data6 Signal Gnd Data7 Signal Gnd Data8 Signal Gnd PtrClk Signal Gnd PtrBusy Signal Gnd AckDataReq Signal Gnd...
  • Page 42 Part 2: Product Specifications BJC-5000 8) Input/output signals Compatible Mode STROBE [Input] This signal is used to read Data1 to Data8. This signal becomes valid after the BUSY signal goes from HIGH to LOW and the printer outputs an ACKNLG signal. This signal is normally HIGH and the printer receives data after the signal goes LOW.
  • Page 43 BJC-5000 Part 2: Product Specifications Ptr Clk [Output] Reverse data transmission phase: The printer requests the host computer to read the data after the Ptr Clk signal goes HIGH to LOW. After reading the data, the host computer notifies the printer of completion of data receiving by making the Host Busy signal go LOW to HIGH.
  • Page 44 Part 2: Product Specifications BJC-5000 ECP Mode Host Clk [Input] This signal handshakes with the PeriphAck (BUSY) signal when data is transferred from the host computer to the printer. When this signal goes HIGH to LOW, it means that the data is output on the data buses (Data 1 to Data 8). The signal goes LOW to HIGH in response to the leading edge of the PeriphAck (BUSY) signal.
  • Page 45 BJC-5000 Part 2: Product Specifications Reverse Req [Input] This signal goes HIGH to LOW to perform a recovery process (data re-transmission) during data transmission from the host computer to the printer. (Win 95 LPT. VXD does not perform a recovery process.) In response to the falling edge of the Ack Reverse (PE) signal, this signal goes LOW to HIGH.
  • Page 46 Part 2: Product Specifications BJC-5000 1284 Active Ack Data Req Bit2 Bit6 Data (1 to 8) 0000 0000 Unknown Host Busy Host Clk Ptr Clk Ptr Busy Printer Busy Status Bit3 Bit7 Data Avail Printer Host Bit0 Bit4 Data Xflag Bit1 Bit5 Nibble mode...
  • Page 47 BJC-5000 Part 2: Product Specifications 1284 Active nAck Reverse Data(1~8) Byte0 Byte1 Host Ack Host Clk Periph Clk Periph Ack nCmd nCmd nPeriph Request nPeripheralRequest XFlag ECP Mode Supported nReverseRequest Figure 2-13 Timing Chart (ECP Mode/Reverse Mode) 2-19...
  • Page 48 Part 2: Product Specifications BJC-5000 This page intentionally left blank 2-20...

  • Page 49: Part 3: Operating Instructions

    Part 3 OPERATING INSTRUCTIONS Page 3 - 1 1. PRINTER SETUP 3 - 1 1.1 Unpacking and Inspection 3 - 2 1.2 Site Selection 3 - 3 1.3 Setup Procedure 3 - 9 1.4 Turning the Printer On/Off 3 -10 1.5 Paper Settings 3 -11 1.6 Banner Print...

  • Page 51: Printer Setup

    Part 3: Operating Instructions BJC-5000 1. PRINTER SETUP 1.1 Unpacking and Inspection After unpacking the printer, make sure the items below are included. BJ Cartridge User’s Manual Printer Driver, etc. BJ Cartridge Packing Packing BJ Cartridge Container Packing Packing Packing Tape Tape Tape...

  • Page 52: Site Selection

    Part 3: Operating Instructions BJC-5000 1.2 Site Selection Set up the printer in a place with enough room for easy operation. The dimensions of the printer when it is set up are shown below. For banner printing, leave a space about the size of an A4-size paper between the edge of the desk and the printer.

  • Page 53: Setup Procedure

    Part 3: Operating Instructions BJC-5000 1.3 Setup Procedure Use the following procedure to set up the printer. 1.3.1 Connecting the interface cable 1) Make sure both the printer and the computer are turned off. 2) Connect one end of the interface cable to the parallel interface connector on the back of the printer.

  • Page 54: Turning On The Printer

    Part 3: Operating Instructions BJC-5000 1.3.3 Turning on the printer Before turning on the printer, first turn on the computer and other peripheral equipment (if any). Make sure the AC power cord is plugged in properly, and then press the POWER button to turn on the printer. When the printer is turned on, it runs the initializing operations and the carriage moves to the cartridge replacement position (printer center).
  • Page 55 Part 3: Operating Instructions BJC-5000 Figure 3-6 BJ Cartridge Handling Precautions 2) Installing the BJ cartridge Open the front cover of the printer and flip up the cartridge lock lever. Insert the BJ cartridge into the carriage and push down the cartridge lock lever to lock the cartridge in place.
  • Page 56 Part 3: Operating Instructions BJC-5000 3) Replacing the BJ cartridge Open the front cover of the printer. The carriage moves to the replacement position (printer center). Flip up the cartridge lock lever and remove the BJ cartridge. Install another cartridge using the procedure in the previous section 2). Store the BJ cartridge (Color, Black, and Photo) removed from the printer in the supplied BJ cartridge container.

  • Page 57: Replacing The Ink Cartridge

    Part 3: Operating Instructions BJC-5000 1.3.5 Replacing the ink cartridge When a color BJ cartridge is used, the ink cartridge must be replaced. Use the following procedure to replace the ink cartridge. 1) When to replace the ink cartridge When the ink runs out or more than 6 months have elapsed since the cartridge was removed from the package, or if the print quality does not improve even after cleaning the head five times or more, replace the ink cartridge with a new one.

  • Page 58: Bj Cartridge Container

    Part 3: Operating Instructions BJC-5000 1.3.6 BJ cartridge container A BJ cartridge container for storing the BJ cartridge is supplied with the printer. Be sure to store a BJ cartridge in this container after it is removed from the printer. The container can store any one of the black BJ cartridges (BC-23 and BC-20 [reference]), color BJ cartridge (BC-21e) and photo BJ cartridge (BC-22e Photo).

  • Page 59: Turning The Printer On/Off

    Part 3: Operating Instructions BJC-5000 1.4 Turning the Printer On/Off 1.4.1 Turning the printer on With the printer plugged in to a power source, press the POWER button to turn on the printer. When the printer turns on, it starts the initializing operation. If a BJ cartridge is not installed, the indicator blinks in green to indicate that the printer is ready to have the BJ cartridge installed and the carriage will move to the cartridge replacement position.

  • Page 60: Paper Settings

    Part 3: Operating Instructions BJC-5000 1.5 Paper Settings To achieve optimal print quality according to the paper to be used, use either automatic feeding using the sheet feeder or manual feeding by feeding paper from manual feeding slot at the back of the printer. This printer has no mechanical paper selection lever and paper-pitch adjustment lever.

  • Page 61: Banner Print

    Part 3: Operating Instructions BJC-5000 1.6 Banner Print When printing on banner paper, after cutting the paper to the appropriate length (2-6 sheets) set the paper to move in a direct path though the printer using the manual feed slot on the printer rear side, not the ASF. Each top margin for banner printing is set to 0 mm at the start of printing.

  • Page 62: Names Of Parts And Their Functions

    Part 3: Operating Instructions BJC-5000 1.7 Names of Parts and Their Functions The names of the printer parts and their functions are described below. Paper Support Cut Sheet Feeder Paper Guide Control Panel Front Cover Paper Delivery Output Tray Flap Extension Guide Paper Output Tray...

  • Page 63: Transporting The Printer

    Part 3: Operating Instructions BJC-5000 2. TRANSPORTING THE PRINTER To carry or transport the printer, keep the BJ cartridge installed in the printer or stored in the BJ cartridge container. This will prevent printing defects caused by ink leakage or dried out ink on the nozzles of the BJ cartridge.

  • Page 64: Printer Servicing Function

    Part 3: Operating Instructions BJC-5000 3. PRINTER SERVICING FUNCTION 3.1 Error Indications This printer notifies errors with the indicator lamp and beeper. Indicator POWER button RESUME button Figure 3-15 Control Panel Table 3-2 Error Indications State Indicator Beeper [Errors that can be corrected by a user] Feed paper error/paper jam error Lights in orange Twice...
  • Page 65 Part 3: Operating Instructions BJC-5000 The errors listed in Table 3-2 are described below. Errors that can be corrected by a user 1) Feed paper error The paper cannot be fed properly even by the paper feed operation. Corrective action: Load the paper and press the RESUME button . 2) Paper jam error The paper cannot be ejected even by the paper eject operation.

  • Page 66: Cleaning The Bj Cartridge

    Part 3: Operating Instructions BJC-5000 17) RAM error The RAM check fails when the AC power cord is plugged in (during the initializing operation). (At this time, the indicator may not light to indicate the error.) 3.2 Cleaning the BJ Cartridge When a print quality problem such as blurred or white lines on the printout occurs, execute a self-test printout to check whether the nozzles on the BJ head are clogged.

  • Page 67: Self-Test Printout

    Part 3: Operating Instructions BJC-5000 3.3 Self-Test Printout This printer provides a self-test printout function which can be executed without connecting the printer to a computer. After turning on the printer, press and hold down the POWER button . When the beeper sounds once, release the POWER button .

  • Page 68: Service Mode

    Part 3: Operating Instructions BJC-5000 3.4 Service Mode The printer starts the service mode when the control buttons are pressed. To avoid data loss by misoperation, use the service mode only when necessary. Use the following procedure to start the service mode. 1) Press and hold down the RESUME button , and then press the POWER button .
  • Page 69 Part 3: Operating Instructions BJC-5000 Do not execute “EEPROM all clear” function unnecessarily. The EEPROM stores data such as the various settings, total number of pages passed, CAUTION number of times the BJ cartridge was replaced, and total waste ink amount.

  • Page 70: Service Mode Print Sample

    Part 3: Operating Instructions BJC-5000 3.5 Service Mode Print Sample 3.5.1 Ripple Pattern Regardless of the BJ cartridge installed, the same pattern is printed repeatedly. When you press the POWER button , the printer finishes printing. When you press the RESUME button , the printer stops printing temporarily.

  • 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 Initialization Sequence Flowchart 4 - 3 1.3 Print Signal Flow 4 - 4 1.4 Print Drive 4 - 6 1.5 Power-Off Sequence Flowchart 4 - 7 2.

  • Page 73: Overview

    Part 4: Technical Reference BJC-5000 1. OVERVIEW 1.1 Printer Block Diagram BJ Cartridge LEFT BJ Cartridge RIGHT Home Position Sensor Auto Alignment Sensor Carriage Paper Feed Motor Purge Sensor Carriage Motor Logic Board Paper Feed Carriage Motor Driver Motor Driver (+5VDC) MPU &...

  • Page 74: Initialization Sequence Flowchart

    Part 4: Technical Reference BJC-5000 1.2 Initialization Sequence Flowchart The flowchart below shows the initialization process from when the printer is turned on to when it goes online. Connect AC plug. • Connect the AC plug to the AC outlet. (Hardware power-on) •...

  • Page 75: Print Signal Flow

    Part 4: Technical Reference BJC-5000 1.3 Print Signal Flow 1.3.1 Data between host computer and printer Conventionally, control functions were provided by a printer's firmware. For this printer, however, these control functions are processed by the printer driver on the computer.

  • Page 76: Print Drive

    Part 4: Technical Reference BJC-5000 1.4 Print Drive To discharge ink from the head for printing, the printer outputs control signals from the printer controller to the BJ head. The control signals consists of the drive control signal for discharging ink from the head’s nozzles and the temperature control signal for adjusting the head’s temperature so that the ink discharge is uniform.
  • Page 77 Part 4: Technical Reference BJC-5000 even/odd enable signals (Even/Odd ENB). The heat enable signals (HENB 0, 1, 2, 3) are the heat drive control signals for the heater boards. In the drop modulation mode, the HENB0 signals drive the heater at the back of the black nozzles;...

  • Page 78: Power-Off Sequence Flowchart

    Part 4: Technical Reference BJC-5000 1.5 Power-Off Sequence Flowchart Press the POWER button. (Soft power-off) Indicator blinks. Capping? Cap off Detection of heads Paper output operation Detection of carriage in home position Auto cleaning if needed Capping Indicator turns off. Figure 4-6 Power-Off Sequence Flowchart Never turn off the printer by unplugging the AC power cord or AC adapter before pressing the...

  • Page 79: Firmware

    Part 4: Technical Reference BJC-5000 2. FIRMWARE 2.1 Interface This printer supports the compatible mode, nibble mode, and ECP mode which are compliant with the bidirectional Centronics interface standard (IEEE P1284). The compatible mode is the same as the conventional Centronics interface-compliant protocol.

  • Page 80: Nibble Mode

    Part 4: Technical Reference BJC-5000 2.1.2 Nibble mode In the nibble mode, the printer transfers data twice to the host computer in 4-bit blocks. The data is transferred with the PtrClk signal and HostBusy signal handshakes. After the printer confirms the falling edge of the HostBusy signal, it prepares the 8-bit data, makes the PtrClk signal go from HIGH to LOW, and outputs the lower 4 bits on the control signal line.

  • Page 81: Ecp Mode

    Part 4: Technical Reference BJC-5000 2.1.3 ECP mode In the ECP mode, the printer transfers 8-bit data all at once and therefore it can send and receive data in high speed. This mode is suitable for sending and receiving large volumes of data.
  • Page 82 Part 4: Technical Reference BJC-5000 1284 Active nAck Reverse Data(1~8) Byte0 Byte1 Host Ack Host Clk Periph Clk Periph Ack nCmd nCmd nPeriph Request nPeripheralRequest XFlag ECP Mode Supported nReverseRequest Figure 4-10 Timing Chart (ECP Mode/Reverse Mode) 4-10...

  • Page 83: Printing System

    Part 4: Technical Reference BJC-5000 2.2 Printing System Control functions are provided by conventional printers. In this printer, however, these control functions are mostly processed by the printer driver of the host computer. With conventional printers, image data in the raster direction (horizontal direction data) is created on the printer driver and the printer side receives this data.
  • Page 84 Part 4: Technical Reference BJC-5000 Table 4-1 Printing Modes and Driving Method Head Combination Print Mode Left Right Media Standard Graphics High Photo Standard Photo/High BC-23 None Plain Paper 360 x 360 dpi 360 x 360 dpi 720 x 720 dpi (BC-20) 1 pass 1 pass...

  • Page 85: Cartridge Automatic Adjustment Function

    Part 4: Technical Reference BJC-5000 2.4 Cartridge Automatic Adjustment Function When the installed printhead is changed, the printer notifies the printer driver of the new printhead configuration. The printer driver displays a pop-up message which advises a user to perform the head alignment before starting the printing.

  • Page 86: Data Separation Function

    Part 4: Technical Reference BJC-5000 2.5 Data Separation Function The data separation function is available only when printing is performed using the dual cartridge system where 2 cartridges are installed on the carriage and the same cartridge is installed in both heads. This function determines whether the left or right head is used for printing each pixel.

  • Page 87: Printer Mechanical System

    Part 4: Technical Reference BJC-5000 3. PRINTER MECHANICAL SYSTEM 3.1 Overview This section describes the printer’s mechanical components. BJ Cartridge Sheet Feeder Purge Unit Carriage Paper Feed Section Figure 4-11 Mechanical System of Printer 3.1.1 Mechanical components 1) BJ cartridge A user replaces and installs the BJ cartridges as required.
  • Page 88 Part 4: Technical Reference BJC-5000 4) Paper feed mechanism and sheet feeder The built-in sheet feeder is driven by the paper feed motor and each paper sheet loaded in the sheet feeder is picked up and fed into the paper feed mechanism. The paper feed mechanism driven by the paper feed motor turns the feed rollers to feed the paper vertically.

  • Page 89: Bj Cartridge

    Part 4: Technical Reference BJC-5000 3.2 BJ Cartridge 3.2.1 Black BJ cartridge structure The black BJ cartridge has a 128-nozzle printhead. The printhead and ink cartridge are assembled in a single cartridge body. 1) Cartridge cover A plastic cover is attached to the cartridge body to prevent ink from leaking inside the cartridge.

  • Page 90: Color Bj Cartridge Structure

    Part 4: Technical Reference BJC-5000 3.2.2 Color BJ cartridge structure The color BJ cartridge is attached to a printhead with 136 nozzles (including 24 nozzles each for yellow, magenta, and cyan inks and 64 nozzles for black ink). The ink cartridge (one cartridge for black, and one cartridge for yellow, magenta, and cyan inks) is replaceable by separating it from the printhead.

  • Page 91: Photo Bj Cartridge Structure

    Part 4: Technical Reference BJC-5000 3.2.3 Photo BJ cartridge structure The photo BJ cartridge is attached to a printhead with 136 nozzles (including 24 nozzles each for yellow, magenta, and cyan inks and 64 nozzles for black ink). The ink cartridge (one cartridge for black, and one cartridge for yellow, magenta, and cyan inks) is replaceable by separating it from the printhead.

  • Page 92: Bubble Head Unit Structure

    Part 4: Technical Reference BJC-5000 3.2.4 Bubble head unit structure 1) Bubble jet nozzles The ink held by the ink sponge goes through a mesh-type ink filter and flows to the bubble jet nozzles via the ink passage of the cartridge body. When the head-drive current is supplied to the heater board, the ink boils and produces several ink bubbles.
  • Page 93 Part 4: Technical Reference BJC-5000 2) Nozzle arrangement The bubble jet nozzles are placed 1/360 inch apart in a vertical array. The black BJ cartridge has 128 nozzles. On the color and photo BJ cartridges, the first 24 nozzles are used for yellow ink, the second 24 nozzles for magenta ink, the third 24 nozzles for cyan ink, and the remaining 64 nozzles for black ink.
  • Page 94 Part 4: Technical Reference BJC-5000 Table 4-2 List of BJ Cartridge Signal Contacts Signal Type Description 1, 2 GND for head driver voltage VH Temperature control heater drive signal Temperature control heater drive signal 5, 6 Head drive voltage (ink discharge heater, temperature control heater, sub-heater driver) W-HT Sub-heater drive signal...
  • Page 95 Part 4: Technical Reference BJC-5000 4) Circuit diagram Temperature Control Heater x 2 Rank Resistor Sub-heater x 2 W-HT <0> HENB <1> Heater 1 Odd ENB Even ENB <0> BENB <1> <2> Block Enable Decoder 128-bit Shift Resistor 128-bit Latch Delay HDATA 128-bit...
  • Page 96 Part 4: Technical Reference BJC-5000 • 128-bit/136-bit shift resistor Stores the print data (HDATA) transferred from the logic board using the HCLOCK timing. • 128-bit/136-bit latch Latches the print data (HDATA) converted by the 128-bit/136-bit shift resistor. • Block enable decoder After the BENB (block enable) 1, 2, and 3 code signals are input, the specified heat timing signal is output.
  • Page 97 Part 4: Technical Reference BJC-5000 5) Ink cartridge detection and identification feature This printer detects the presence of a BJ cartridge by the two resistance values of TOP (pin 9) and DIODEA (pin 10) of the cartridge signal contacts. When the resistance value of TOP is 750 or less and that of DIODEA is not 0 , the printer...

  • Page 98: Purge Unit

    BJC-5000 3.3 Purge Unit 3.3.1 Purge unit functions The purge unit of this printer has two caps: the left cap performs both cleaning and capping and the right cap is used exclusively for capping. 1) Capping function The capping function prevents the nozzles from drying out and ink from leaking by pressing the cap of the purge unit against the face of the printhead.

  • Page 99: Purge Unit Structure

    Part 4: Technical Reference BJC-5000 3.3.2 Purge unit structure 1) Purge drive gear The feed roller driven by the paper feed motor operates the purge drive gear via the transmission gear. The purge drive gear in turn operates the cam which controls capping.
  • Page 100 Part 4: Technical Reference BJC-5000 Slide Lock Pin Wiper Unit Purge Unit Slide Lock Pin Waste Ink Tube Carriage Lock Pin (Used for capping) Purge Drive Gear Pump Unit Purge Sensor Flag (Used for sucking and capping) Wiper Unit Maintenance Jet Receiving Section Figure 4-20 Purge Unit 4-28...

  • Page 101: Carriage

    Part 4: Technical Reference BJC-5000 3.4 Carriage 3.4.1 Carriage function 1) printhead installation The BJ cartridge is fixed mechanically to the carriage and connected to the logic board with the carriage ribbon cable. 2) Carriage driver The carriage motor and carriage belt moves the carriage horizontally across the paper.

  • Page 102: Carriage Structure

    Part 4: Technical Reference BJC-5000 3.4.2 Carriage structure 1) BJ cartridge attachment section Two BJ cartridges can be installed on the carriage of this printer. The two cartridge holders on both sides move with the locking lever which fixes the BJ cartridge to the carriage.
  • Page 103 Part 4: Technical Reference BJC-5000 Top View Slide Lock Pin When the sheet feeder is driven Transmission Arm Paper Feed Roller Transmission Roller Sheet Feeder Eject Roller Drive Gear Transmission Arm Gear Paper Feed Roller Gear Idle Gear Sheet Feeder Unit Purge Drive Gear Purge Unit Top View...

  • Page 104: Paper Feed/Cut Sheet Feeder

    Part 4: Technical Reference BJC-5000 3.5 Paper Feed/Cut Sheet Feeder 3.5.1 Paper feed/cut sheet feeder function Paper Pick-Up Roller Sensor Pick-up Roller Pressure Roller BJ Cartridge Paper End Sensor Spur Eject Roller Transmission Roller Sensor Flag Paper Feed Roller Pick-Up Guide Figure 4-23 Paper Feed 4-32...
  • Page 105 Part 4: Technical Reference BJC-5000 1) Paper feed mechanism The paper feed mechanism can supply paper in two ways: automatically from the cut sheet feeder and manually from the manual feeding slot. The built-in cut sheet feeder is driven by the paper feed motor. Paper is stacked in the sheet feeder and fed automatically.

  • Page 106: Sheet Feeder Structure

    Part 4: Technical Reference BJC-5000 3.5.2 Sheet feeder structure This printer has no mechanical paper selection lever on the cut sheet feeder. If the paper meets the required specifications, it can be fed without carriage position adjustment etc. according to the paper thickness. The paper is loaded in the cut sheet feeder under the condition where the two leading edge positions and left corner are caught by the pick-up corner and pick-up hook.
  • Page 107 Part 4: Technical Reference BJC-5000 Pick-up Roller Paper Pick-up Corner Pick-up Hook Paper Paper loaded status Manual paper feed mode When plain paper is fed When envelope/postcard is fed Figure 4-25 Paper Separator 4-35...

  • Page 108: Printer Electrical System

    Part 4: Technical Reference BJC-5000 4. PRINTER ELECTRICAL SYSTEM 4.1 Overview of Printer Electrical System The electrical system functions are handled by the logic section or power supply. The logic section converts data from the interface into print signals or printer operation signals, drives the BJ cartridge and motors, and monitors the sensor statuses.

  • Page 109: Logic Section

    Part 4: Technical Reference BJC-5000 4.2 Logic Section 4.2.1 Logic section block diagram Address Bus A1 to A20 25MHz Data Bus D0 to D15 Reset IC ROMCS DRAM Bus DRAM 4-Mbit RA0*8 RA0*8 A0*8 Power Switch PWRSW(P60) RAMD0*15 8-Mbit I/O 1 *16 RAMD0*15 RSMSW(P74) Reset Switch...

  • Page 110: Logic Section Components

    Part 4: Technical Reference BJC-5000 4.2.2 Logic section components 1) MPU & printer controller The MPU contains a 16-bit CPU, 512K-byte work RAM, 24-bit address bus port, 16- bit data bus port, stepping motor controller, A-D converter, interface controller, printhead controller, buffer controller, DRAM controller, EEPROM controller, I/O ports, and other components.
  • Page 111 Part 4: Technical Reference BJC-5000 DRAM controller The DRAM controller controls the 9-bit address/16-bit data bus of the 4M-bit DRAM, and also performs the read/write control, RAS/CAS control, and refresh control. Buffer controller The buffer controller automatically writes and reads the print buffer in the DRAM, manages the remaining capacity of the print buffer, and clears the data after it is read.
  • Page 112 Part 4: Technical Reference BJC-5000 7) Multiplexer (U3) Triple 2-channel Analog Multiplexer. It has three identical circuits which select and output either one of the 2 analog inputs made by the MUXSEL output from the MPU & printer controller. When MUXSEL is “Low,” inputs “X0, Y0, Z0” are selected; and when MUXSEL is “High,”...

  • Page 113: Sensor Functions

    Part 4: Technical Reference BJC-5000 5. SENSOR FUNCTIONS The printer has a pick-up roller sensor, paper end sensor, home position sensor, purge sensor, cover open sensor, printer temperature sensor, head temperature sensor, and auto-alignment sensor. The printer is also provided with a waste ink absorption amount detection function which counts and stores the waste ink absorption amount in the EEPROM and issues an error signal when the waste ink absorber becomes full.

  • Page 114: Home Position Sensor

    Part 4: Technical Reference BJC-5000 5.3 Home Position Sensor The photo interrupter-type home position sensor senses the home position edge and detects the carriage position. After the edge is detected, the carriage moves to the right. The position where the maintenance jet is executed becomes the home position. 5.4 Purge Sensor The photo interrupter-type purge sensor uses a flag in the purge unit to detect the capping position.

  • Page 115: Waste Ink Amount Detection

    Part 4: Technical Reference BJC-5000 5.9 Waste Ink Amount Detection Waste ink is discharged during head maintenance and absorbed by the waste ink absorber. If the amount of waste ink discharged exceeds the absorption capacity of the waste ink absorber, ink might leak from the printer. To prevent ink from leaking, the waste ink absorber capacity is estimated and detected when full.
  • Page 116 Part 4: Technical Reference BJC-5000 This page intentionally left blank 4-44...

  • Page 117: Part 5: Maintenance

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

  • Page 119: Maintenance

    Part 5: Maintenance BJC-5000 1. MAINTENANCE 1.1 Parts for Regular Replacement Level Part User None Service personnel None 1.2 Consumables Level Consumable User Black BJ cartridge (BC-23 and BC-20 [reference]) Color BJ cartridge (BC-21e) Photo BJ cartridge (BC-22e Photo) Ink cartridge (BCI-21 Black/BCI-21 Color) Service personnel None 1.3 Periodic Maintenance...

  • Page 120: Service Tools

    Part 5: Maintenance BJC-5000 2. SERVICE TOOLS 2.1 List of Tools Ordinary Tool Phillips screwdriver For removing screws Blade screwdriver For removing plastic parts Tweezers For installing and removing coil springs Multi-meter For troubleshooting Special Tool (Parts Number) Gap gauge 1.9mm For adjusting the head gap (QY9-0038-000) Tension spring...

  • Page 121: Grease Application

    Part 5: Maintenance BJC-5000 3. GREASE APPLICATION Use the special tool to apply the grease at the points and amounts shown below. Sliding Section of Platen Gear (Approx. 22 to 46mg) Cross-Sectional View of Shaft Sliding Gear and Sliding Section Section Surface (Approx.

  • Page 122: Disassembly And Reassembly

    Part 5: Maintenance BJC-5000 4. DISASSEMBLY AND REASSEMBLY 4.1 Disassembly and Reassembly When disassembling or reassembling the printer, refer to the parts catalog. The figure numbers in the parts catalog are provided in the order of disassembly. Close-up diagrams are also provided for parts where you need to exercise caution during disassembly and reassembly.

  • Page 123: Carriage Guide Frame Installation

    Part 5: Maintenance BJC-5000 4.2.2 Carriage guide frame installation The carriage guide frame adjusts the head gap between the BJ cartridge nozzles and platen to obtain optimum printing quality. It is mounted on the printer frame. The head gap must be adjusted only when the carriage guide frame position on the printer frame is changed.

  • Page 124: Unlocking The Carriage Lock

    Part 5: Maintenance BJC-5000 4.2.3 Unlocking the carriage lock The carriage is normally locked at the capping position when the printer is turned off. This feature is provided by the carriage lock mechanism in the purge unit. It prevents the carriage from moving from the capping position during transportation or being moved by hand to assure that normal printhead protection (capping) is performed.

  • Page 125: Cautions After Replacing The Waste Ink Absorber

    Part 5: Maintenance BJC-5000 The waste ink absorber consists of three layers. When the printer is first NOTE used, most of the waste ink is absorbed by the lower waste ink absorber layer. The amount of waste ink in the upper layer of the waste ink absorber rises as the waste ink amount increases.

  • Page 126: Adjustments

    Part 5: Maintenance BJC-5000 5. ADJUSTMENTS 5.1 Adjustment Point Only the distance (head gap) between the BJ cartridge’s nozzles and platen needs to be adjusted to the designated value (approximately 1.9mm) to ensure optimum printing quality. This adjustment is done by moving the cartridge guide frame fixing position forward or backward.

  • Page 127: Adjustment Procedure

    Part 5: Maintenance BJC-5000 5.3 Adjustment Procedure 5.3.1 Preparation 1) Remove the upper case unit. 2) Turn on the printer under the condition where no BJ cartridge is installed in the carriage. (At this time, the carriage will move to position A.) 3) Disconnect the power cord.

  • Page 128: Adjustment

    Part 5: Maintenance BJC-5000 5.3.2 Adjustment Place the gap gauge at position B. Move the carriage to position B. Gradually loosen screw A until the carriage guide frame moves forward under its own weight using screw B as a pivot. Lightly push the screw A end of the carriage guide frame once or twice and check that the carriage guide frame pivots around the screw B as indicated by arrows in Figure 5-9.
  • Page 129 Part 5: Maintenance BJC-5000 Move the carriage to position A, and then place the gap gauge at position C. Move the carriage to position C. Gradually loosen screw B until the carriage guide frame moves forward under its own weight using screw A as a pivot. Lightly push the screw B end of the carriage guide frame once or twice and check that the carriage guide frame pivots around screw A as indicated by the arrows shown in Figure 5-9.

  • Page 130: Troubleshooting

    Part 5: Maintenance BJC-5000 6. TROUBLESHOOTING 6.1 Troubleshooting 6.1.1 Overview This chapter consists of the following two sections on subsequent pages: “Error condition diagnosis” for diagnosing a problem when the cause is unknown and “Symptoms” for resolving problems whose causes are known. In the case of an unknown problem, diagnose the problem.
  • Page 131 Part 5: Maintenance BJC-5000 6. In some cases, several corrective actions are successively indicated in “Error condition diagnosis” and “Symptoms.” These are steps that must be followed to resolve the problems. After you perform each corrective action step, make a test print to confirm whether the problem has been fixed.

  • Page 132: Error Condition Diagnostics

    Part 5: Maintenance BJC-5000 6.2 Error Condition Diagnostics 6.2.1 Diagnostic flowcharts Power ON Sequence Flowchart Start Connect power cable of AC adapter to wall outlet. (Hard power ON) ROM/RAM/EEPROM Check Turn Power ON. (Soft power ON) ROM/RAM/EEPROM Beeper: Sounds 7 times ROM error Indicator: Blinks 11 times (orange) Beeper: Sounds 7 times...
  • Page 133 Part 5: Maintenance BJC-5000 Left-head Beeper: Sounds 3 times recognition error Indicator: Lights (orange) Right-head Beeper: Sounds 4 times recognition error Indicator: Lights (orange) Beeper: Sounds 7 times Sub-heater error Indicator: Blinks 8 times (orange) Purge unit initialization Beeper: Sounds 7 times Cleaning error Indicator: Blinks 3 times (orange) Temperature sensor check...
  • Page 134 Part 5: Maintenance BJC-5000 Auto cleaning if needed Waste ink check Beeper: Sounds 6 times Waste ink full warning Indicator: Lights (orange) Beeper: Sounds 7 times Waste ink full error Indicator: Blinks 6 times (orange) Indicator lights (green). 5-16...

  • Page 135: Error Recovery

    Part 5: Maintenance BJC-5000 6.2.2 Error recovery a) Error display <Cause> During initialization, the contents in the ROM cannot 1. ROM Error be read. <Suspected Parts> Control ROM <Corrective Action> Replace the logic board. <Cause> RAM reading and writing is not being performed 2.
  • Page 136 Part 5: Maintenance BJC-5000 <Cause> The home position cannot be detected. 4.Home Position <Suspected Parts> Home position sensor, carriage motor, logic board, carriage ribbon cable, Error carriage belt, carriage shaft, idler pulley <Corrective Action> Check for any paper jams, carriage belt wear/deterioration/ Visual check of carriage dislocation, deformation of the carriage or carriage guide frame, drive mechanism...
  • Page 137 Part 5: Maintenance BJC-5000 <Cause> Cleaning or capping is not executed properly or not 5.Cleaning Error detected. <Suspected Parts> Purge unit, purge sensor, purge sensor cable, paper feed motor, paper feed drive power transmission section, logic board <Corrective Action> During initialization, do the paper feed motor, feed roller, Visual check of paper eject roller, etc., rotate? Any abnormal noises? feed system operation...
  • Page 138 Part 5: Maintenance BJC-5000 <Cause> The home position of the pick-up roller cannot be 6.Sheet Feed detected. <Suspected Parts> Sheet feeder unit, pick-up roller, paper error feed motor drive transmission sensor, slide lock lever, logic board <Corrective Action> Check the sheet Remove the sheet feeder unit, then manually rotate the feeder unit operation.
  • Page 139 Part 5: Maintenance BJC-5000 <Cause> The thermistor is abnormal. 7.Machine <Suspected Parts> Thermistor <Corrective Action> Replace the logic board. Temperature Error <Cause> The waste ink absorbers’ estimated waste ink amount 8.Waste Ink-Full has reached 95% (Warning) or 100% (Error). <Suspected Parts> Warning/Error Waste ink absorbers, logic board <Corrective Action>...
  • Page 140 Part 5: Maintenance BJC-5000 <Cause> The head temperature is abnormally high. 9.Head <Suspected Parts> BJ cartridge, logic board Temperature Error <Corrective Action> When you use two BJ cartridges on both the right and left sides, follow the flow below for each BJ cartridge.
  • Page 141 Part 5: Maintenance BJC-5000 <Cause> The sub heater which is located inside the BJ cartridge 10. Sub Heater cannot be driven. <Suspected Parts> BJ cartridge, logic board, carriage unit error <Corrective Action> When you use two BJ cartridges on both the right and left sides, follow the flow below for each BJ cartridge.
  • Page 142 Part 5: Maintenance BJC-5000 <Cause> The BJ cartridge is off from a position where the 11. Cartridge cartridge may not be replaced. <Suspected Parts> BJ cartridge, logic board, carriage unit Displaced Error <Corrective Action> When you use two BJ cartridges on both the right and left sides, follow the flow below for each BJ cartridge.

  • Page 143: Paper Feed

    Part 5: Maintenance BJC-5000 <Cause> • The paper feed operation is executed but the paper 12. Paper Feed is not fed. • The paper eject operation is executed but the Error/Paper paper is not ejected. <Suspected Parts> Sheet feeder unit, pick-up roller sensor, paper end sensor, logic board.
  • Page 144 Part 5: Maintenance BJC-5000 Pick-Up Roller Pick-Up Roller Sensor Previous Sensor Flag Page Paper Check the pick-up Check for pick-up roller sensor flag Pick-Up Roller roller sensor flag deformation or Paper End Sensor damage. Sensor Flag Correct ? Replace the pick-up roller.
  • Page 145 Part 5: Maintenance BJC-5000 <Cause> 1. The BJ cartridge recognition ID error is detected. 13 Right Head 2. The rank resistance error of the head is detected. 3. The resistance error of the head temperature Recognition sensor is detected. Error <Suspected Parts>...
  • Page 146 Part 5: Maintenance BJC-5000 Symptoms <Symptom> The power does not turn on even though you 1. The Power press the POWER button. <Cause> The AC adapter and/or logic board is (are) faulty. Does Not Turn <Corrective Action> START Check the DC plug and output voltage.

  • Page 147: The Printer

    Part 5: Maintenance BJC-5000 <Symptom> • The cartridge installed is not recognized. 2.The Printer • The cartridge installed is recognized incorrectly. <Cause> • Faulty contact between the cartridge and carriage. Does Not • The cartridge, carriage cable and/or logic board is Recognize The (are) faulty.

  • Page 148: Faulty Printing

    Part 5: Maintenance BJC-5000 <Symptom> • The printer does not print at all. 3. Faulty Printing • Printing stops halfway. • Only a certain color is not printed. <1>: No <Cause> • The ink has run out or the BJ cartridge is faulty. Printing •...
  • Page 149 Part 5: Maintenance BJC-5000 <Symptom> • There is blotching. 4.Faulty Printing • There are white stripes on the printed paper. • There are certain dots not printed. <2>: Stripes <Cause> • The BJ cartridge or cartridge contacts is/are faulty. Appear •...
  • Page 150 Part 5: Maintenance BJC-5000 5 Faulty Printing <3>: Other Print Problems Symptom Check item Corrective action Paper contamination Ink mist on the platen Use a piece of soft cloth lightly damped with water to clean the platen. Ink has dried up around the Clean the head nozzles and head nozzles.
  • Page 151 Part 5: Maintenance BJC-5000 <Symptom> • No printing. 6.Faulty Interface • An unspecified color is printed. <Cause> • The printer driver is not set properly. • The interface cable is faulty. • The logic board located at the printer is faulty. <Corrective Action>...

  • Page 152: Location And Signal Assignment

    Part 5: Maintenance BJC-5000 7. LOCATION AND SIGNAL ASSIGNMENT 7.1 Logic Board Figure 5-10 Logic Board J6 (Carriage cable connector) Pin No. Signal name IN/OUT Description VHGND GND for the head drive voltage VH VHGND GND for the head drive voltage VH MCH0 Driver signal for the temperature control heater MCH1...
  • Page 153 Part 5: Maintenance BJC-5000 J7 (Carriage cable connector) Pin No. Signal name IN/OUT Description VHGND GND for the head drive voltage VH VHGND GND for the head drive voltage VH MCH0 Driver signal for the temperature control heater MCH1 Driver signal for the temperature control heater Head drive voltage Head drive voltage SUBH...
  • Page 154 Part 5: Maintenance BJC-5000 J4 (DC power connector) Pin No. Signal name IN/OUT Description +24 VDC +24 VDC +5 VDC VHPWR VH power supply for the print head heater, ON (High)/OFF signal J5 (Interface connector) Pin No. Signal name IN/OUT Description See Part 2 for details.

  • Page 155: Circuit Diagrams

    Part 5: Maintenance BJC-5000 8. CIRCUIT DIAGRAMS 8.1 Parts Layout 8.1.1 Logic board Figure 5-11 Logic Board (Top View) 5-37...
  • Page 156 Part 5: Maintenance BJC-5000 R122 R101 R104 R134 R100 R132 R133 R118 R131 R114 FB52 R120 FB55 R137 R115 R140 FB51 FB54 R159 R149 R110 R157 R148 R108 R136 R141 R155 R106 R146 R154 R145 R142 R152 R139 R138 R123 R103 R119 R113...
  • Page 157 BJC-5000 Part 5: Maintenance 8.2 Circuit Diagrams CNPG (for Purge Sensor) Multiplexer 39K,1/16W PSVCC 390,1/16W LOGIC BOARD 01 LOGIC BOARD 01 EEPROM (1Kbit) 10K,1/16W 4053 0.1m F TP19 TP27 TP10 TP18 AT93C46R-10SC 1000PF EEDI 0.1m F OPTIONAL EECS EECLK EEDO DO NOT INSTALL Temperature 1000PF...
  • Page 158 BJC-5000 Part 5: Maintenance LOGIC BOARD 02 (for Left Printhead) (for Right Printhead) 0.1m F,50V 0.1m F,50V 2200m F,35V 2200m F,35V 2.7K, 2.7K, R124 R125 12K,1/10W 1/16W 12K,1/10W 1/16W 3.9K,1/4W 3.9K,1/4W VHGND VHGND 25B1443 25B1443 VHGND VHGND SUBHR SUBHL <01-D3> <01-E3>...
  • Page 159 BJC-5000 Part 5: Maintenance LOGIC BOARD 03 ICP-N25 IFPWR <01-F4> Carriage Motor Driver 0.1m F,50V 100m F,35V CNCR FN1A4P 3.3K,1/16W Carriage Motor VREF1 0.1m F CON4 OUT1A VREF2 CRA+ CNIF (for Interface) CRAP OUT1B CRA– <01-F4> PHASE APPROX.10.5 / CRA0 1/16W, CRB+ <01-F4>...
  • Page 161 The printing paper contains 70% waste paper. PRINTED IN JAPAN (IMPRIME AU JAPON) CANON INC.

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