Canon BJC-8500 Service Manual
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Canon BJC-8500 Service Manual

Canon BJC-8500 Service Manual

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REVISION 0
QY8-1356-000
MAR. 1999
COPYRIGHT
1999 CANON INC. CANON BJC-8500 0399 AB 0.30-0 PRINTED IN JAPAN (IMPRIME AU JAPON)

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  • Page 1 REVISION 0 QY8-1356-000 MAR. 1999 COPYRIGHT 1999 CANON INC. CANON BJC-8500 0399 AB 0.30-0 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 2 0399 AB 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- 8500 printer. Part 1: Safety and Precautions This part contains information on how to service the unit safely. 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. PERSONAL SAFETY PRECAUTIONS 1 - 1 1.1 Moving Sections of the Printer 1 - 2 1.2 Ink Stains 1 - 2 1.2.1 Ink path 1 - 3 1.2.2 Ink mist 1 - 4 1.3 Electrically Live Sections of the Printer...

  • Page 7: Bj Cartridge Container Sb-80

    Page 2 -12 2.2.2 Printing area 2 -13 2.3 Interface Specifications 2 -13 2.3.1 Parallel interface 2 -19 2.3.2 Serial interface Part 3: OPERATING INSTRUCTIONS 3 - 1 1. PRINTER SETUP 3 - 1 1.1 Unpacking 3 - 3 1.2 Installation Space 3 - 4 1.3 Installation Procedure 3 - 4...
  • Page 8 Page 4 -10 2.2 Printing Modes 4 -11 2.2.1 P-POP (Plain Paper Optimized Printing) mode 4 -11 2.2.2 Draft mode (Print Quality: High Speed) 4 -11 2.2.3 Photo printing mode 4 -11 2.2.4 Carriage speed 4 -12 2.2.5 Advanced settings 4 -14 2.3 Optimum Printing Control 4 -14...
  • Page 9 Page 5 - 2 2. SERVICE TOOLS 5 - 2 2.1 List of Tools 5 - 3 3. APPLYING GREASE 5 - 6 4. DISASSEMBLY/ASSEMBLY 5 - 6 4.1 About Disassembly/Assembly 5 - 6 4.2 Precautions for Disassembly/Assembly 5 - 6 4.2.1 Unlocking the carriage 5 - 7 4.2.2 Disassembly prohibited parts...
  • Page 10 III. ILLUSTRATION INDEX Part 1: SAFETY AND PRECAUTIONS Page 1 - 1 Figure 1 - 1 Moving Sections of the Printer 1 - 2 Figure 1 - 2 Ink Path 1 - 3 Figure 1 - 3 BC-80, BC-81, and BC-82 Photo 1 - 3 Figure 1 - 4 Ink Mist...
  • Page 11 Page 3 -15 Figure 3 -17 Transporting the Printer 3 -16 Figure 3 -18 Capping Lock 3 -16 Figure 3 -19 Capping Lock/Unlock 3 -17 Figure 3 -20 Control Panel 3 -18 Figure 3 -21 BJ Cartridges do not Match Warning (Sample) 3 -19 Figure 3 -22 Windows 95/98 Printer Driver Maintenance Sheet (Sample)
  • Page 12 Page 4 -41 Figure 4 -39 Block Diagram of Power Supply Section 4 -42 Figure 4 -40 Output Connectors 4 -43 Figure 4 -41 Sensor Locations 4 -46 Figure 4 -42 Principle of Ink-out Detection 4 -47 Figure 4 -43 Ink Sensor and Anti-reflection Sheet 4 -48 Figure 4 -44...
  • Page 13 IV. TABLE INDEX Part 2: PRODUCT SPECIFICATIONS Page 2 - 5 TABLE 2 - 1 CARTRIDGE AND PRINTING MODES 2 -11 TABLE 2 - 2 PAPER SPECIFICATIONS Part 3: OPERATING INSTRUCTIONS 3 -11 TABLE 3 - 1 PRINTER PAPER SETTINGS 3 -17 TABLE 3 - 2 OPERATOR CALL...

  • Page 15: Part 1: Safety And Precautions

    Part 1 SAFETY AND PRECAUTIONS Page 1 - 1 1. PERSONAL SAFETY PRECAUTIONS 1 - 1 1.1 Moving Sections of the printer 1 - 2 1.2 Ink Stains 1 - 4 1.3 Electrically Live Sections of the Printer 1 - 5 2.

  • Page 17: Personal Safety Precautions

    BJC-8500 Part 1: Safety and Precautions 1. PERSONAL SAFETY PRECAUTIONS 1.1 Moving Sections of the Printer Be careful not to let your hands or fingers, hair, clothes, accessories, etc., become caught in any moving sections of the printer. The moving sections of the printer are driven by the carriage motor, paper feed motor, or the purge motor.

  • Page 18: Ink Stains

    Part 1: Safety and Precautions BJC-8500 1.2 Ink Stains 1.2.1 Ink path Be careful not to touch the ink path on the printer, or get ink stains on your hands or fingers, clothing, printer while it is operating and on the work table. The ink path is comprised of the nozzle section of BJ cartridges, suction caps, waste ink tubes, wiper section, wiper cleaner, maintenance jet section, wiper unit, wiper unit transfer pad and waste ink absorber.

  • Page 19: Ink Mist

    "ink mist." This printer generates a much larger amount of ink mist than conventional Canon printers. As a countermeasure, two fans, A and B, are provided to create an air path to draw the ink mist behind fan B into the ink mist absorber.

  • Page 20: Electrically Live Sections Of The Printer

    Part 1: Safety and Precautions BJC-8500 1.3 Electrically Live Sections of the Printer All electrical sections of the printer supplied with AC power are electrically live when the power cord is connected whether the printer is turned ON or OFF using the POWER button.

  • Page 21: Machine Precautions

    BJC-8500 Part 1: Safety and Precautions 2. MACHINE PRECAUTIONS 2.1 Handling BJ Cartridges 2.1.1 Unpacking BJ cartridges Do not unpack the BJ cartridges until they are ready to be used. Before installing the BJ cartridge in the printer, gently remove the cap protecting the nozzles as shown in Figure 1-6 Removing the Protective Cap .

  • Page 22: Protecting Bj Cartridges

    Part 1: Safety and Precautions BJC-8500 2.1.2 Protecting BJ cartridges To prevent clogging of the nozzles due to foreign matter, never touch the nozzle section of the BJ cartridge, filters, and ink outlets on the ink tanks, or wipe off foreign matter or clogged ink with tissue paper or the like.

  • Page 23: Turing The Printer On/Off

    BJC-8500 Part 1: Safety and Precautions 2.1.3 Turning the printer ON/OFF When the power is switched OFF with the POWER button, the printer automatically caps the nozzle section of the BJ cartridge to protect it and prevent ink leakage. If you unplug the power cord before the printer is turned OFF with POWER button, the printer may stop without capping the nozzles, depending on the position of the carriage.

  • Page 24: Handling The Ink Tanks

    Part 1: Safety and Precautions BJC-8500 2.2 Handling the Ink Tanks 2.2.1 Unpacking the ink tanks Do not unpack the ink tank from its package until it is ready to be used. Before installing the ink tank in the BJ cartridge, unpack the ink tank and remove the protective cap protecting the ink outlets.

  • Page 25: Handling The Printer

    BJC-8500 Part 1: Safety and Precautions 2.3 Handling the Printer 2.3.1 Spurs Metal spurs are used for feeding and outputting paper after printing. The tips of the spurs are also sharp and pointed. They are small and easily deformed. Take care not to deform them.

  • Page 26: Paper Feed Roller Unit

    Part 1: Safety and Precautions BJC-8500 2.3.3 Paper feed roller unit The surface of the paper feed roller is blast-finished to ensure a maximum resolution of 1200 1200 dpi. Take care not to scratch the surface of this roller. The drive gear used on the paper feed roller is also finished to high precision to feed the paper in small increments for 1/1200 inch feeding.

  • Page 27: Precautions To Prevent Damage From Static Electricity

    BJC-8500 Part 1: Safety and Precautions 2.3.5 Precautions to prevent damage from static electricity The electrical charge accumulated on a person when clothes rub can damage electric elements or change their electrical characteristics. Never touch the contact section on carriage top or the contact section on BJ cartridges. Attention! Static Electricity! Contact Section on Carriage Top Contact Section on BJ Cartridges...

  • Page 28: Ink Leakage/Ink Dry-Up Precautions

    Part 1: Safety and Precautions BJC-8500 2.3.6 Ink leakage/ink dry-up precautions Always turn the printer OFF by the POWER button with the BJ cartridges installed. The following operation is automatically carried out when powering OFF with the POWER button. Capping The head cap covers and secures the nozzle section to prevent the nozzles on the BJ cartridge from drying.

  • Page 29: Precautions For Service

    BJC-8500 Part 1: Safety and Precautions 3. PRECAUTIONS FOR SERVICE 3.1 Precautions Concerning Memory Data This printer counts the number of BJ cartridge attachments/removals, number of sheets fed, waste ink amount, head position adjustment values, and cleaning count, and stores this data in the EEPROM on the logic board. Observe the following precautions during servicing.

  • Page 30: Special Settings

    Part 1: Safety and Precautions BJC-8500 When the printer is turned OFF, the printer updates the waste ink amount in EEPROM. To prevent ink leakage when the waste ink amount exceeds the capacity of the waste ink absorber, the printer stops printing and displays a "waste ink full"...

  • Page 31: Precautions To Prevent Damage From Static Electricity

    BJC-8500 Part 1: Safety and Precautions 3.3 Precautions to Prevent Damage from Static Electricity The electrical charge accumulated on a person when clothes rub can damage electric elements or change their electrical characteristics. In order to prevent static electricity discharge, be sure to touch some metallic part that is grounded by using a wrist strap, for example, to release the static electricity accumulated on your body before disassembling the printer for service.

  • Page 32: Precautions For Disassembly/Assembly

    Part 1: Safety and Precautions BJC-8500 3.4 Precautions for Disassembly/Assembly 3.4.1 Disassembly prohibited parts Never loosen the red screws on the printer's mechanical sections. Two red screws are used for fixing the adjustment plate. This plate determines the distance between the nozzles on the BJ cartridge and the platen. This distance is called the "head gap."...

  • Page 33: Self-Diagnostic Functions

    BJC-8500 Part 1: Safety and Precautions 3.5 Self-diagnostic Functions The printer has built-in self-diagnostic functions to analyze hardware defects. The results of self-diagnosis are indicated by the indicators on operational panel and the beeper. For details, see "Part 3: 3.1 Error Indications" (Page 3-17) . 1-17...
  • Page 34 Part 1: Safety and Precautions BJC-8500 This page intentionally left blank 1-18...

  • Page 35: 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 Cartridges 2 - 6 1.4 BJ Cartridge Container SB-80 2 - 7 1.5 Consumables 2 - 8 2.
  • Page 37 BJC-8500 Part 2: Product Specifications 1. PRODUCT OUTLINE 1.1 Product Outline The BJC-8500 is a printer targeted for the corporate and professional use market. It incorporates next-generation BJ cartridges, and is capable of printing 1200 dpi resolution full-color and black-and-white on a par with LBP printing. It has the following four main features: 1.
  • Page 38 9. Ink tanks can be removed from the installed BJ cartridges on the carriage, allowing empty ink tanks to be replaced. 10. Canon's first bubble jet printer to have a built-in cassette (1st cassette) ; an optional 2nd cassette can be attached.
  • Page 39 BJC-8500 Part 2: Product Specifications 1.3 BJ Cartridges 1.3.1 Black BJ cartridge [BC-80] Black BJ cartridge "BC-80" is used for black-and-white printing and printing using the ink optimizer. It has three BJ heads, each having 256 nozzles (two staggered 128-nozzle rows), arranged in parallel.
  • Page 40 Part 2: Product Specifications BJC-8500 1.3.3 Photo BJ cartridge [BC-82 Photo] Photo BJ cartridge "BC-82 photo" supports photo-realism (super photo mode, printing of natural images containing lots of light color and midtones), and is used for printing photo black, photo cyan and photo magenta. It has three BJ heads, each having 256 nozzles (two staggered 128-nozzle rows), arranged in parallel.
  • Page 41 BJC-8500 Part 2: Product Specifications 1.3.4 Relationship between BJ cartridges and printing mode The following table shows which inks are used in each printing mode. TABLE 2-1 CARTRIDGE AND PRINTING MODES Color BJ Photo BJ Black BJ Cartridge Cartridge Cartridge BC-80 Printing Modes BC-81...
  • Page 42 Part 2: Product Specifications BJC-8500 1.4 BJ Cartridge Container SB-80 This container is for storing either the Black BJ cartridge "BC-80" or Photo BJ cartridge "BC-82 photo" that is removed from the printer when selectively using these cartridges for printing. This container is packaged together with the printer, and is also available from stores as an option.

  • Page 43: Consumables

    BJC-8500 Part 2: Product Specifications 1.5 Consumables 1.5.1 BJ cartridge Each of the BJ cartridges (Black BJ cartridge "BC-80," Color BJ cartridge "BC-81", or Photo BJ cartridge "BC-82 photo") used on this printer are supplied as consumables (sold as BJ cartridge + ink tanks). 1.5.2 Ink tank The ink tanks below are supplied as consumables (sold as individual ink tank): BCI-8BK, BCI-8WF for Black BJ cartridge "BC-80"...

  • Page 44: Specifications

    Max. 322.2 mm (max. print width when A3+ is selected) 6. Line feed speed Approx. 180ms/line (256/600 inch line feed) 7. Line feed pitch n/600 inch (Canon extended mode n: programmable) 8. Printing direction Color: Uni-directional, Black: Bi-directional, Uni-directional 9. Control mode Canon extended (Native) mode 10.
  • Page 45 64 g/m to 105 g/m (sheet deer/cassette) Thickness: 0.25 mm max. (manual feed) Envelopes COM#10, DL Color plain paper Canon bubble jet paper LC-301 High-resolution paper Color BJ high-resolution paper HR-101 Glossy photo paper Color BJ glossy photo paper GP-301...
  • Page 46 Part 2: Product Specifications BJC-8500 Color BJ Cartridge BC-81 Nozzle 128 nozzles 2 rows 3 heads Ink color Cyan, magenta, yellow Ink amount 23.5ml for each color Weight Approx. 103g (including ink tanks) Number of pages printable per ink tank Approx.

  • Page 47: Paper Specifications

    : A5 (vertical): sheet feeder/manual feed A5 (horizontal): sheet feeder only : A3+ size is a Canon original size slightly larger (329 483 mm) than regular A3 size Using A3+ size allows you to print out an A3-size page with register marks.

  • Page 48: Printing Area

    Part 2: Product Specifications BJC-8500 2.2.2 Printing area A3+, LDR, A3, LTR (horizontal), A4, A5 LTR (vertical), LGL size 23mm 23mm 29mm 3.4mm 3.4mm 29mm 6.4mm 6.4mm A4+, LTR+ size BJ cloth 27.9mm 25.4mm 29mm 27.9mm 29mm 20.5mm 5.08mm 5.88mm (A4+) 5.08mm (LTR+) 6.4mm 6.4mm...

  • Page 49: Interface Specifications

    BJC-8500 Part 2: Product Specifications 2.3 Interface Specifications 2.3.1 Parallel interface 1. Data Transmission Method 8-bit parallel interface (IEEE1284 compatible) Bi-directional protocol (supports Compatibility mode/Nibble mode/ECP mode) Note: The handshake transmission method of DATA STROBE from the host computer, with ACKNLG signal and BUSY signal from the printer. Reverse transmission by Nibble and ECP modes.
  • Page 50 Part 2: Product Specifications BJC-8500 6. Pin Assignments Signal Circuit Diagram * IN/OUT Signal Circuit Diagram * IN/OUT DATA STROBE STROBE DATA STROBE -RET * DATA1 DATA1 IN/OUT DATA1 -RET * DATA2 DATA2 IN/OUT DATA2 -RET * DATA3 DATA3 IN/OUT DATA3 -RET * DATA4 DATA4...
  • Page 51 BJC-8500 Part 2: Product Specifications 5) SELECT INX In the BJC-8500, this signal is used only as a transmission signal from the Compatible mode to negotiation mode. Output Signals: 1) ACKNLG This signal is a response signal to the DATA STROBE signal. This signal becomes high when the next DATA STROBE signal is output during the output of this signal.
  • Page 52 Part 2: Product Specifications BJC-8500 3) INIT Because of the IEEE1284 interface specifications, this signal is not used in Nibble mode. 4) AUTO FEED XT (Host Busy) The host computer makes this signal low to show it can receive data from the printer.
  • Page 53 BJC-8500 Part 2: Product Specifications 3) INIT (ReverseRequest) This signal is set to low to perform a recovery process of the data sent from the host computer during the forward phase. When this happens, INIT signal becomes high, responding to the falling edge of the P.E. (Ack Reverse) signal. INIT signal is lowered when the forward phase idle is switched to the reverse phase (data to be sent from the printer to the host computer).
  • Page 54 Part 2: Product Specifications BJC-8500 500ns 500ns 500ns min. min. min. DATA 1-8 STROBE BUSY 4.0 s Figure 2-9 Compatibility Mode Timing Chart 1284 Active Ack Data Req Bit2 Bit6 Host Busy Host Clk Ptr Clk Ptr Busy Printer BUSY Status Bit3 Bit7 Data Avail...

  • Page 55: Serial Interface

    BJC-8500 Part 2: Product Specifications 2.3.2 Serial interface 1. Interface RS-422-compatible serial interface. 2. Data transfer speed 57.6 (default), 444, 888 kbit/s 3. Data format Start bit: 1 bit Data: 8 bits Stop bit: 1 bit Parity: None 4. Signal polarity MARK (logical "1"): -3V to -12V SPACE (logical "0"): +3V to +12V 5.
  • Page 56 Part 2: Product Specifications BJC-8500 This page intentionally left blank 2-20...

  • Page 57: Part 3: Operating Instructions

    Part 3 OPERATING INSTRUCTIONS Page 3 - 1 1. PRINTER SETUP 3 - 1 1.1 Unpacking 3 - 3 1.2 Installation Space 3 - 4 1.3 Installation Procedure 3 -10 1.4 Turning the Printer ON/OFF 3 -11 1.5 Paper Settings 3 -13 1.6 Names and Functions of Parts 3 -15...

  • Page 59: Printer Setup

    BJC-8500 Part 3: Operating Instructions 1. PRINTER SETUP 1.1 Unpacking After unpacking the printer, check that you have the following: Container SB-80 Carton Flapper Unit Instruction Manual Packing Flap Packing Upper Cassette Packing Power Cord Polyethylene Sheet Carton BJ Cartridges Paper Output Tray Packing Reinforcer...
  • Page 60 Part 3: Operating Instructions BJC-8500 Paper Output Tray Polyethylene Sheet Lower Cassette Packing Packing Tapes Packing Carton Packing Tapes Figure 3-2 Packing (2): Lower Cassette...

  • Page 61: Installation Space

    BJC-8500 Part 3: Operating Instructions 1.2 Installation Space Install the printer with the clearances given below for the printer to be operated efficiently. When the carriage moves to the left and right, the printer may generate substantial vibration. Do not install the printer at a location where it is easily affected by vibration. The minimum amount of space required when installing the printer is shown below.

  • Page 62: Installation Procedure

    Part 3: Operating Instructions BJC-8500 1.3 Installation Procedure Install the printer as follows. 1.3.1 Connecting the interface cable 1) Make sure that the printer and host computer are OFF. 2) Plug the interface cable into the printer interface connector. Secure the cable with connector clips.

  • Page 63: Installing Bj Cartridges

    BJC-8500 Part 3: Operating Instructions 1.3.3 Installing BJ cartridges 1) Removing the protective cap from the BJ cartridge Remove the BJ cartridge from the aluminum bag, and remove the protective cap from the nozzles. Protective Cap Figure 3-6 Removing the Protective Cap Do not reuse head caps that have been removed once.
  • Page 64 To eliminate these differences, the mutual positions of the print heads must be adjusted as follows after the Canon printer driver has been installed. Procedure 1) Load two or more sheets of A4-size plain paper in the sheet feeder.
  • Page 65 BJC-8500 Part 3: Operating Instructions Figure 3-9 Checking the Position of the Print Head (2)

  • Page 66: Replacing Ink Tanks

    Part 3: Operating Instructions BJC-8500 1.3.4 Replacing ink tanks Replace the ink tank as follows. 1) Ink tank replacement criteria Replace the ink tank in any of the following cases: "ink-out" detection indicates that the ink tank has run out of ink, or when cleaning does not improve print quality. (Generally, the ink tank should be replaced about six months after it is removed from its package.) 2) Removing the ink tank...

  • Page 67: Bj Cartridge Container

    BJC-8500 Part 3: Operating Instructions 1.3.5 BJ cartridge container SB-80 The printer is supplied with BJ cartridge container SB-80 for storing Black BJ cartridge BC-80, Color BJ cartridge BC-81 or Photo BJ cartridge BC-82 Photo. When Black BJ cartridge BC-80 is installed in the printer, store the Photo BJ cartridge BC-82 Photo in the BJ cartridge container.

  • Page 68: Turning The Printer On/Off

    Part 3: Operating Instructions BJC-8500 1.4 Turning the Printer ON/OFF 1.4.1 Turning the printer on With the printer connected to a power source, press the POWER button to turn ON the printer. When the printer turns ON, the beeper sounds once and initializing operations are executed.

  • Page 69: Paper Settings

    BJC-8500 Part 3: Operating Instructions 1.5 Paper Settings For optimum printing, selectively use the automatic pick-up mechanism using the cassette and sheet feeder, and manual feed for feeding paper from the rear of the printer according to the type of printing paper you are using. This printer does not have a paper thickness adjustment lever as the distance between sheets is automatically adjusted to suit the type of paper.
  • Page 70 Part 3: Operating Instructions BJC-8500 TABLE 3-1 PRINTER PAPER SETTINGS Media Paper Name Size Feed Method Stack Amounts Sheet Feeder Cassette Plain Paper Ream weight A3/A4/A5 Vertical Auto 10 mm 25 mm 64 to 90g/m (100 sheets) (250 sheets) Color BJ Plain LC-301 A3/A4 Auto...

  • Page 71: Names And Functions Of Parts

    BJC-8500 Part 3: Operating Instructions 1.6 Names and Functions of Parts This section describes the names of the parts of the printer and their functions. Front of Printer POWER ERROR RESUME Control Panel Section Figure 3-15 Names and Functions of Parts (1) Front of Printer q Paper Rest: Supports the paper straight in the sheet feeder.
  • Page 72 Part 3: Operating Instructions BJC-8500 Control Panel Section !1 POWER Button: Turns the printer ON and OFF. !2 POWER Indicator: Indicates whether the printer is ON or OFF. This indicator blinks when print data is received, when the cover is open, or when cleaning is in progress.

  • Page 73: Transporting The Printer

    BJC-8500 Part 3: Operating Instructions 2. TRANSPORTING THE PRINTER Before service personnel or users carry or transport the printer, remove the ink tanks from the printer, and perform cleaning and capping. This prevents defective printing caused by ink leakage and ink drying in the BJ cartridge nozzles. When Black BJ cartridge BC-80 and Photo BJ cartridge BC-82 Photo are used selectively, store the BJ cartridge that is not installed in the printer in BJ cartridge container SB-80.

  • Page 74: Capping Lock/Unlock

    Part 3: Operating Instructions BJC-8500 2.2 Capping Lock/Unlock When packing the printer, open the top cover, and make sure that the carriage is locked (the carriage does not move from the home position by moving to the left or right) by the carriage lock pin on the purge unit at the home position (right edge of printer).

  • Page 75: Printer Servicing Functions

    BJC-8500 Part 3: Operating Instructions 3. PRINTER SERVICING FUNCTIONS 3.1 Error Indications The printer informs the operator of an error status by the ERROR indicator and sounding of a buzzer. There are two types of error status: operator calls which are recoverable by the user, and service calls which are unrecoverable by the user.

  • Page 76: Service Call

    : Sometimes errors are not displayed normally. When the bi-directional interface (nibble mode or ECP mode) is enabled, a "service call message" is displayed on the screen of the host computer via the BJC-8500 Canon printer driver. When a service call occurs, remedy the trouble by following the description in "Part 5: 6 TROUBLESHOOTING"...

  • Page 77: Function Settings

    BJC-8500 Part 3: Operating Instructions 3.3 Function Settings This printer does not have a function selector for setting functions. The printer drivers for Macintosh/Windows machines are used to set the various functions. 3.3.1 Maintenance settable items The printer driver "Maintenance" can be used to set the following items: 1) Print Head Cleaning Specifies cleaning (all colors, black, color), head refreshing and ink tank.
  • Page 78 Part 3: Operating Instructions BJC-8500 Figure 3-23 Macintosh Printer Driver Utility Sheet (Sample) 3-20...
  • Page 79 BJC-8500 Part 3: Operating Instructions 3.3.2 Custom setting The printer driver has a custom setting dialog box for hidden utility functions. This dialog box is for servicing only and dealing with claims on the market. It is not disclosed the user. (1) Operation Procedure In Windows: •...
  • Page 80 Part 3: Operating Instructions BJC-8500 Windows 95/98 Macintosh Figure 3-24 Special Settings (Sample) 3-22...

  • Page 81: Control Buttons

    BJC-8500 Part 3: Operating Instructions 3.4 Control Buttons This printer has two control buttons, the RESUME button and POWER button. These control buttons are used to perform cleaning the BJ cartridges or for setting service mode items. 3.4.1 Cleaning the BJ cartridges If the printer image is blurred or a print defect occurs, such as a white streak, print a test pattern to see whether or not the BJ cartridge is clogged with ink.

  • Page 82: Service Mode

    Part 3: Operating Instructions BJC-8500 3.4.2 Service mode Operating the control buttons ( RESUME button and POWER button) set the printer to the service mode. The following table shows the functions available in the service mode. (print in the service mode can be executed only when paper is fed in the sheet feeder. The service mode when connecting to the host computer is not guaranteed.) q Press the RESUME button five times in a software power OFF state at an interval of less than 3 seconds, and immediately hold down the POWER button.

  • Page 83: Self Test Print (Nozzle Check Pattern)

    BJC-8500 Part 3: Operating Instructions 3.5 Self Test Print (Nozzle Check Pattern) This printer has the self test print function which can be executed without connection to a computer. If you press the POWER button with the power OFF, the buzzer sounds once. If you keep the POWER button held down, the buzzer sounds once again.
  • Page 84 Part 3: Operating Instructions BJC-8500 When the nozzle check pattern is printed on plain paper, the area printed with ink optimizer cannot be visually checked, as the ink optimizer is translucent. In this case, you can check the overall ejection state of the ink optimizer by checking for ink smears in the pattern (black grid on yellow background) at the bottom left of the nozzle check pattern.

  • Page 85: Eeprom

    BJC-8500 Part 3: Operating Instructions 3.6 EEPROM The EEPROM stores various settings such as the total number of sheets passed, BJ cartridge installation count, and the total waste ink absorption amount. The total numbers of sheets passed and total waste ink absorption amount can serve as a reference for how much the printer has been used.

  • Page 86: Eeprom List Print

    Part 3: Operating Instructions BJC-8500 If the EEPROM is initialized, data is permanently lost and cannot be recovered. Exercise care when initializing the EEPROM. 3.6.3 EEPROM list print EEPROM list print is printed out in decimal. Figure 3-27 EEPROM List Print (Sample) (1) Device ID (2) Total number of sheets passed (Black BJ cartridge BC-80 + Color BJ Cartridge BC- (3) Total number of sheets passed (Color BJ cartridge BC-81 + Photo BJ Cartridge BC-...

  • Page 87: Destination Setting

    BJC-8500 Part 3: Operating Instructions 3.6.4 Destination setting The control ROM used on this printer has both the functions of Japanese model (BJ F8500) and overseas model (BJC-8500). The printer specifications are set by the device ID stored in EEPROM. When the EEPROM is initialized, the device ID is set to BJC-8500, and the printer specifications are set for the overseas model.
  • Page 88 Part 3: Operating Instructions BJC-8500 This page intentionally left blank 3-30...

  • Page 89: Part 4: Technical Reference

    Part 4 TECHNICAL REFERENCE Page 4 - 1 1. OVERVIEW 4 - 1 1.1 Printer Block Diagram 4 - 2 1.2 Initial Flowchart 4 - 5 1.3 Power OFF Operation Flow 4 - 6 1.4 Print Signal Flow 4 - 7 1.5 BJ Cartridge Drive 4 - 8 2.

  • Page 91: Overview

    BJC-8500 Part 4: Technical Reference 1. OVERVIEW 1.1 Printer Block Diagram Fan B Paper Feed Motor Carriage Motor Fan A Purge Motor Carriage (left) Black BJ Cartridge BC-80 Carriage (right) Photo BJ Cartridge BC-82 Photo Color BJ Cartridge BC-81 Carriage Driver Board Carriage Motor Driver Carriage Board...

  • Page 92: Initial Flowchart

    Part 4: Technical Reference BJC-8500 1.2 Initial Flowchart The initial flowchart below shows the process from when the printer is turned ON to when it goes online. (1) Hardware Power ON START Connect the AC power cord (hardware power ON) EEPROM check EEPROM error Check logic IC (IC1)
  • Page 93 BJC-8500 Part 4: Technical Reference (2) Software Power ON Power ON (software power ON) EEPROM error? EEPROM error Check carriage and purge unit. HP sense error Check sheet feeder for paper jam. Carriage error Purge error Sheet feeder error Paper jam error BJ cartridge error BJ cartridge error Other hardware error...
  • Page 94 Part 4: Technical Reference BJC-8500 Previous page All BJ cartridges installed? No BJ cartridge error All ink tanks installed? No ink tank error Check remaining ink level. Ink-out error Check waste ink level. Waste ink warning Figure 4-4 Initial Flowchart (3)

  • Page 95: Power Off Operation Flow

    BJC-8500 Part 4: Technical Reference 1.3 Power OFF Operation Flow The printer flowchart below shows the process from software power OFF to when the printer is stopped. Power was turned OFF Power was turned OFF during by pressing POWER BJ cartridge replacement or button or in printer ink tank replacement.

  • Page 96: Print Signal Flow

    Logic Board Figure 4-6 Print Signal Flow Printing control on this printer is compatible with Canon extended (native) mode. The emulation and soft emulation modes are not supported. For this reason, print signals converted to Canon extended mode by the...

  • Page 97: Bj Cartridge Drive

    BJC-8500 Part 4: Technical Reference 1.5 BJ Cartridge Drive The printer controller drives the BJ cartridges in accordance with print data and control signals that are output from the logic board. The control signals perform three functions. They determine the ink ejection timing and ink amounts ejected from the nozzles of the BJ cartridges, maintain the BJ cartridges at the optimum temperature, and stabilize the ink ejection amounts.

  • Page 98: Firmware

    Part 4: Technical Reference BJC-8500 2. FIRMWARE 2.1 Interface This printer supports a nibble mode and ECP mode that are both compliant with bi- directional Centronics interface standard (IEEE 1284). 2.1.1 Nibble mode In nibble mode, the printer transfers 8 bits of data to the host computer divided into two 4-bit blocks..

  • Page 99: Ecp Mode

    BJC-8500 Part 4: Technical Reference 2.1.2 ECP mode In the ECP mode, data can be received at high speed as data transactions are carried out on a bi-directional data bus. As data and commands are differentiated by control signals, and bi-directional communications can be carried out, switching to another mode is not necessary when the data transfer direction is switched.

  • Page 100: Printing Modes

    Part 4: Technical Reference BJC-8500 2.2 Printing Modes The printer varies carriage movement and the BJ cartridge drive method according to the paper type and print quality selected in the printer driver, print data sent from the host computer, etc. to attain high-quality printing without bleeding or shifting in the printout.

  • Page 101: P-Pop (Plain Paper Optimized Printing) Mode

    BJC-8500 Part 4: Technical Reference 2.2.1 P-POP (Plain Paper Optimized Printing) mode This printer ejects ink optimizer from Black BJ cartridge BC-80 only when plain paper, envelope, or thick paper modes (except when print quality is set to high speed) are selected on the printer driver.

  • Page 102: Advanced Settings

    Part 4: Technical Reference BJC-8500 2.2.5 Advanced settings The following table shows the Print Mode defaults on the printer driver. To change these settings, select "Advanced Detailed Setting." TABLE 4-3 MAIN AUTO PALETTE DEFAULTS (Windows 95/98) Palette Print Quality Dithering Paper Type Printing Direction Auto...
  • Page 103 BJC-8500 Part 4: Technical Reference Windows 95/98 Macintosh Figure 4-12 Advanced Detailed Setting (Sample) 4-13...

  • Page 104: Optimum Printing Control

    Part 4: Technical Reference BJC-8500 2.3 Optimum Printing Control 2.3.1 Power monitor The power monitor functions to prevent defects caused by lower print density that occur when the sum of the head drive power supply exceeds the power supply capacity during heavy duty printing. To be more precise, the number of nozzles on the BJ cartridge that are simultaneously heated is reduced to reduce power consumption.

  • Page 105: Printer Mechanism

    BJC-8500 Part 4: Technical Reference 3. PRINTER MECHANISM 3.1 Overview of the Mechanical System This section describes an overview of the printer mechanical system. Ink Tanks Black BJ Cartridge BC-80 Ink Tanks Photo BJ Cartridge BC-82 Photo Carriage Unit Sheet Feeder Unit Ink Tanks Color BJ Cartridge BC-81 Upper Cassette Unit...

  • Page 106: Mechanical System Configuration

    Part 4: Technical Reference BJC-8500 3.1.1 Mechanical system configuration 1) BJ cartridge/ink tank Three types of BJ cartridges can be used on the printer: Black BJ cartridge BC-80, Color BJ cartridge BC-81 and Photo BJ cartridge BC-82 Photo. The ink tanks of each of these BJ cartridges can be removed from the BJ cartridge for replacement.

  • Page 107: Bj Cartridge

    BJC-8500 Part 4: Technical Reference 3.2 BJ Cartridge 3.2.1 BJ cartridge structure The structure of the BJ cartridge is the same for Black BJ cartridge BC-80, Color BJ cartridge BC-81, and Photo BJ cartridge BC-82 Photo. BJ Cartridge Body BJ Head Unit Nozzle Chip with TAB* *Tape Automated Bonding Figure 4-15 BJ Cartridge Structure...
  • Page 108 Part 4: Technical Reference BJC-8500 3.2.2 BJ head unit structure Rubber seal This seal prevents evaporation of ink inside the ink tank. Filter This filter prevents the entry of dirt into the ejection chip. It also ensures and connects the ink path with the ink tank. Chip tank This is integrated with the head, and provides an ink path.
  • Page 109 BJC-8500 Part 4: Technical Reference 3.2.3 Nozzle arrangement The nozzles on each BJ cartridge are arranged 1/300 inch apart, in parallel, in a vertical, staggered array of two rows, each with 128 nozzles. The structure of the BJ cartridge is the same for Black BJ cartridge BC-80, Color BJ cartridge BC-81, and Photo BJ cartridge BC-82 Photo.

  • Page 110: Signal Contact Part

    Part 4: Technical Reference BJC-8500 3.2.4 Signal contact part The signal contact part of the BJ cartridge PCB contacts the signal contact part of the carriage ribbon cable to transfer print signals and detection signals between the printer and the BJ cartridge. The following signals are transferred with the BJ cartridges.
  • Page 111 BJC-8500 Part 4: Technical Reference TABLE 4-5 BJ CARTRIDGE I/O SIGNALS Pin No. Head Signal Name IN/OUT Function ALL (A, B, C) Head block enable A-Data1 A head serial data (even-numbered) A-Data2 A head serial data (odd-numbered) B-HE B head heat enable B-Di2A B head diode anode ALL (A, B, C)

  • Page 112: Bj Cartridge Drive Circuit

    Part 4: Technical Reference BJC-8500 3.2.5 BJ cartridge drive circuit Ink ejection is controlled by the BJ cartridge drive circuit on the heater board. The BJ cartridge drive circuit is the same for all three types of BJ cartridges (Black BJ cartridge BC-80, Color BJ cartridge BC-81 and Photo BJ cartridge BC-82 Photo).

  • Page 113: Bj Cartridge Detection

    BJC-8500 Part 4: Technical Reference 8-bit shift register (1 to 8, 8 to 1) These registers convert and store in parallel the serial print data (Data 1, Data 2) that is transferred from the logic board, in timing with CLK. 8-bit latch (1 to 8, 8 to 1) This latch latches the print data (Data 1, Data 2) that is transferred from the 8-bit shift registers.

  • Page 114: Purge Unit

    Part 4: Technical Reference BJC-8500 3.3 Purge Unit 3.3.1 Purge unit functions 1) Capping function The purge unit's cap is pressed against the print head face plate of the BJ cartridge to prevent the nozzles from drying or ink from leaking. When the printer is standing by for print data with the cap open, the BJ cartridge is capped if data is not received within a preset time.
  • Page 115 BJC-8500 Part 4: Technical Reference TABLE 4-7 CLEANING EXECUTION CONDITIONS, CLEANING TIME AND INK SUCTION AMOUNTS Cleaning Execution Condition Target BJ Automatic Manual Cleaning Cleaning Time Ink Suction Amount Cartridge Cleaning Control Printer (all heads) (per color) Panel Driver • When low ink chamber level Relevant BJ Approx.
  • Page 116 BJC-8500 Part 4: Technical Reference TABLE 4-7 CLEANING EXECUTION CONDITIONS, CLEANING TIME AND INK SUCTION AMOUNTS Cleaning Execution Condition Target BJ Automatic Manual Cleaning Cleaning Time Ink Suction Amount Printer (all heads) (per color) Cartridge Cleaning Control Panel Driver • When low ink chambe r level RelevantBJ Approx.2 min.

  • Page 117: Purge Unit Structure

    Part 4: Technical Reference BJC-8500 3.3.2 Purge unit structure 1) Purge drive gear The purge drive gear is driven by the purge motor (stepping motor). The direction of rotation of the purge drive gear switches between pump operations and wiping operations.
  • Page 118 BJC-8500 Part 4: Technical Reference 6) Wiper unit The wiper unit driven by the paper feed motor is located on the left side of the printer body. This unit is provided exclusively for Black BJ cartridge BC-80. It presses an ink absorber against the print head face plate each time the preset dot count is reached to absorb ink, and the ink absorber takes up ink by transferring the ink to the rubber wound around the paper feed roller.

  • Page 119: Carriage Unit

    Part 4: Technical Reference BJC-8500 3.4 Carriage Unit 3.4.1 Carriage unit functions 1) BJ cartridge mounting function BJ cartridges are installed on the carriage, and are connected to the logic board by the carriage ribbon cable. 2) Carriage drive function The carriage moves horizontally by the carriage belt, which is driven by the carriage motor.

  • Page 120: Carriage Unit Structure

    BJC-8500 Part 4: Technical Reference 3.4.2 Carriage unit structure 1) BJ cartridge mounting section The lock lever is lowered at the BJ cartridge replacement position (left side of printer body) to secure BJ cartridges to the carriage. When BJ cartridges are secured to the carriage, the signal contact part of the carriage ribbon cable is pressed against the signal contact part of the BJ cartridge to enable transfer of print signals from the logic board to the BJ cartridges.

  • Page 121: Paper Feed Section/Sheet Feeder Unit/Cassette Units

    Part 4: Technical Reference BJC-8500 3.5 Paper Feed Section/Sheet Feeder Unit/Cassette Units 3.5.1 Paper feed/sheet feeder/cassette functions 1) 4 pick-up paths This printer has the following 4 pick-up paths: automatic pick-up from the sheet feeder unit/upper cassette unit/lower cassette unit, and manual feed from the manual feed slot.
  • Page 122 BJC-8500 Part 4: Technical Reference 2) Paper feed section When print paper is detected by the paper end sensor (photo-interrupter), it is automatically fed to the printing start position on the platen by the paper feed roller driven by the paper feed motor gear. Paper feed control during printing is carried out by controlling the rotation of the paper feed roller.

  • Page 123: Sheet Feeder Unit Structure

    Part 4: Technical Reference BJC-8500 3.5.2 Sheet feeder unit structure The printing paper is stacked on the sheet feeder hooked by the claws at the left and right corners of the sheet feeder. The loading claw is provided for improving the paper loading performance.

  • Page 124: Cassette Unit Structure

    BJC-8500 Part 4: Technical Reference 3.5.3 Cassette unit structure In the cassette unit of this printer, printing paper is stacked in the cassette body hooked by the left and right claws. (The left claw follows sliding movement of the side guide.) On the upper cassette drive, when the purge motor is operated, the pendulum gear on the upper cassette is interlocked with cassette drive gear, and the pick-up roller in the...

  • Page 125: Flapper Unit Structure

    Part 4: Technical Reference BJC-8500 3.5.4 Flapper unit structure The user slides the side guide on the flapper unit to match the size of the paper each time that paper is changed. When the paper feed motor operates, the flapper drive gear couples to the relay gear of the eject roller unit to open and close the left and right flappers.

  • Page 126: Path Of Fan Air Flow

    BJC-8500 Part 4: Technical Reference 3.5.5 Path of fan air flow This printer generates a large amount of ink mist, so, two fans that operate during printing and cleaning are installed on the printer to collect ink mist and prevent soiling by ink mist.

  • Page 127: Printer Electrical System

    Part 4: Technical Reference BJC-8500 4. PRINTER ELECTRICAL SYSTEM 4.1 Overview The electrical system functions are handled by the logic section (logic board, carriage board, carriage driver board, etc.) and the power supply section (power supply unit). The logic section converts the data from the interface into print signals and printer operation signals, and drives the BJ cartridges and all the motors while monitoring the status of the sensors.

  • Page 128: Logic Section

    BJC-8500 Part 4: Technical Reference 4.2 Logic Section 4.2.1 Logic section block diagram Address Bus Data Bus CDT0 CAD1 XRESET Reset IC Parallel Interface CDT15 CAD23 32MHz Serial Interface EXTAL (16MHz) 8-Mbit CKOUT Control Ink Sensor INKP ERROR Indicator LED1 Paper End (IC1) PESNS...

  • Page 129: Logic Section Components

    Part 4: Technical Reference BJC-8500 4.2.2 Logic section components 1) MPU (IC1) The MPU contains a 16-bit CPU, 24-bit address bus, 512-byte work RAM and 9 peripheral I/O ports (interrupt controller, DMAC, timer, I/O ports, A/D converter, DRAM controller, chip select controller, monitor timer, clock and power manager). Built-in CPU 32-bit wide general-purpose registers are built into the 16-bit CPU.
  • Page 130 BJC-8500 Part 4: Technical Reference 2) Printer controller (IC2) The printer controller contains the CPU interface controller, DRAM controller, SRAM controller, parallel/serial interface controller, print head controller, data processing controller and I/O port controller. CPU interface controller The CPU interface controller controls read/write from the CPU. DRAM controller The DRAM controller is a DRAM-specific bus independent of the MPU bus.
  • Page 131 Part 4: Technical Reference BJC-8500 3) Control ROM (IC502) This 1 MByte control ROM contains the program for printer control. 4) DRAM (IC601/IC602) This 32 Mbyte (2 16 Mbyte) DRAM is controlled by the printer controller, and is used as the receiver buffer, print buffer, and working area. 5) SRAM (IC503) This 256 kbit SRAM is controlled by the printer controller, and is used as the buffer for providing a time difference in heating the even-numbered nozzles and the odd-...

  • Page 132: Power Supply Section

    BJC-8500 Part 4: Technical Reference 4.3 Power Supply Section The power supply section is a switching regulator that converts the input AC to the various DC voltages to be used on the printer, and supplies these DC voltages to the logic board.
  • Page 133 Part 4: Technical Reference BJC-8500 3) Output connectors The following voltages are output by the secondary side output connectors of the power supply circuit: VCC: Voltage for driving ICs and LSIs: +5.0V±0.2V VH: Voltage for driving head: +10.3V±0.1V VM: Voltage for driving motors: +35.0V±0.5V VHENB Figure 4-40 Output Connectors 4-42...

  • Page 134: Detection Functions

    BJC-8500 Part 4: Technical Reference 5. DETECTION FUNCTIONS 5.1 Sensor Functions This printer is provided with the following sensors. These sensors detect the printer's state. Cover Open Sensor Paper End Sensor Pick-up Roller Sensor Detect Paper Length Encoder Sensor Detect Paper Width Paper Size Sensor Temperature Sensor Ink Sensor...
  • Page 135 Part 4: Technical Reference BJC-8500 Purge sensor This photo-interrupter-type sensor detects the capping position of the purge unit. Detection of the module phase at the capping position is performed by interruption of the purge sensor by the cam gear flag inside the purge unit. Paper end sensor This photo-interrupter-type sensor detects the presence of paper on the paper feed section.

  • Page 136: Other Detection Functions

    BJC-8500 Part 4: Technical Reference 5.2 Other Detection Functions This printer is also provided with the following detection functions in addition to the sensors. 5.2.1 Waste ink level detection The printer has a function for managing the waste ink level (including the waste ink optimizer level) of the waste ink absorbers.

  • Page 137: Ink-Out Detection

    Part 4: Technical Reference BJC-8500 5.2.3 Ink-out detection 1) Operation The ink sensor unit installed on the purge unit comprises an LED and photo- transistor. The light emitted from the LED enters the prism formed on the base of the ink tank at an angle of incidence of 45°. When the ink tank's ink compartment contains ink, the incident light is partially refracted due to the slight difference between the refractive indices of the ink tank (plastic) and the ink, and the amount of light entering the photo-transistor decreases.
  • Page 138 BJC-8500 Part 4: Technical Reference 3) Replacing the ink tank when the "ink-out" error is displayed The following describes the ink tank replacement procedure on the printer: 1) The printer lights the ERROR indicator, and sounds the buzzer three times to notify the operator of an "ink-out error."...

  • Page 139: No Ink Tank Detection

    Part 4: Technical Reference BJC-8500 5.2.4 No ink tank detection Operation When the ink tank is installed, light emitted from the LED is reflected by the concave mirror formed on the base of the ink tank, and is returned to the phototransistor.
  • Page 140 Part 5 MAINTENANCE Page Page 5 - 1 1. MAINTENANCE 5 -12 6. TROUBLESHOOTING 5 - 1 1.1 Periodically-replaced 5 -12 6.1 Overview of Parts Troubleshooting 5 - 1 1.2 Worn Parts 5 -13 6.2 Error Condition Diagnosis 5 - 1 1.3 Consumables 5 -32 7.

  • Page 142: Part 5: Maintenance

    BJC-8500 Part 5: Maintenance 1. MAINTENANCE 1.1 Periodically-replaced Parts Level Part User None Service personnel See TABLE 5-1 PERIODICALLY-REPLACED PARTS TABLE 5-1 PERIODICALLY-REPLACED PARTS Periodically-replaced Parts Spur unit Waste ink absorber Encoder head* film, ink mist absorbers Condition for replacement Conspicuous spur Waste ink full error Carriage error, sheet feeder...

  • Page 143: Service Tools

    Part 5: Maintenance BJC-8500 2. SERVICE TOOLS 2.1 List of Tools Ordinary Tools Note Phillips screwdriver For removing and replacing screws Blade screwdriver For removing plastic parts Long-nose pliers For removing and replacing springs Tweezers For installing coil springs Flat brush For applying grease (one per grease type) Multimeter For troubleshooting...

  • Page 144: Applying Grease

    BJC-8500 Part 5: Maintenance 3. APPLYING GREASE When service parts are replaced, apply a coating of grease "MOLYKOTE HP-300," "HANARL FLX2," "EU-1" or "MOLYKOTE PG-662" at the specified locations. Apply a sufficient amount of grease to form a thin and even coating to the specified locations. Do not apply grease to locations other than the specified locations.
  • Page 145 Part 5: Maintenance BJC-8500 PG-662 (except cassette unit) Approx. 12mg 2 Locations, Approx. 12mg each Approx. 12mg Approx. 24mg 2 Locations, Approx. 3mg each Entire Inside Periphery, Approx. 3mg Rib, 4 Locations, Gear Teeth Surface, Approx. 6mg each 4 Locations, Approx.
  • Page 146 BJC-8500 Part 5: Maintenance PG-662 (cassette unit) 24 Locations, Approx. 3mg each Grease Application Points Approx. 3mg (enlargement) 20 Locations, Approx. 3mg each Figure 5-3 Grease Application Sections (3)

  • Page 147: Disassembly/Assembly

    Part 5: Maintenance BJC-8500 4. DISASSEMBLY/ASSEMBLY 4.1 About Disassembly/Assembly When disassembling and assembling the printer, refer to the parts catalog. In the parts catalog, Figure Nos. are presented in the order of disassembly. Close-up diagrams are also provided for additional detail. 4.2 Precautions for Disassembly/Assembly 4.2.1 Unlocking the carriage When the BJ cartridge is installed, and the power is OFF, the carriage is normally...

  • Page 148: Disassembly Prohibited Parts

    BJC-8500 Part 5: Maintenance The BJ cartridge contact section on the carriage unit is positioned before it is fixed in place. The position of this contact section cannot be adjusted during servicing. Do not disassemble this contact section. Ink Tanks BJ Cartridge Contact Sections Carriage Unit BJ Cartridges...

  • Page 149: Purge Unit Tubes

    Part 5: Maintenance BJC-8500 4.2.3 Purge unit tubes When ink and ink optimizer react, they harden, so, separate absorbers are used for absorbing waste ink and ink optimizer. Be sure to check that the three tubes on the purge unit (blue and yellow for ink, transparent for ink optimizer) are at the locations specified in Figure 5-7 Purge Unit Tubes .

  • Page 150: Logic Board Replacement

    BJC-8500 Part 5: Maintenance 4.3 Logic Board Replacement 4.3.1 Except for EEPROM replacement Various settings, waste ink level, number of sheets fed and other printer data are stored to the EEPROM (IC501) on the logic board. When the board has been replaced with a new one during servicing, operation using the same printer settings is possible by removing the EEPROM from the logic board before it is replaced, and attaching it to the new logic board.

  • Page 151: Waste Ink Absorber Replacement

    Part 5: Maintenance BJC-8500 4.4 Waste Ink Absorber Replacement When the waste ink warning/waste ink tank full error occurs, and the waste ink absorbers (waste ink optimizer absorber) are replaced, be sure to replace all eight absorbers at the same time. (If the ink absorbers are particularly dirty, we recommend replacing the entire lower case unit.) Even if the rate of waste ink absorption is relatively low, replace all eight absorbers at the same time.

  • Page 152: Adjustment

    BJC-8500 Part 5: Maintenance 5. ADJUSTMENT 5.1 Adjustment Locations 5.1.1 EEPROM (IC501) and waste ink absorber When the logic board is replaced, and the EEPROM (IC501) is attached to the new logic board, perform a test print to check the EEPROM data settings. (For details on outputting a self test print, see "Part 3: 3.6.3 EEPROM list print"...

  • Page 153: Troubleshooting

    Part 5: Maintenance BJC-8500 6. TROUBLESHOOTING 6.1 Overview of Troubleshooting 6.1.1 Definition Troubleshooting involves "error condition diagnosis" and "error recovery." Error condition diagnosis is required if the cause of an error is unknown, and error recovery is performed if the cause of an error is known. If the cause of an error is unknown, perform error condition diagnosis, and if it is known, perform error recovery.

  • Page 154: Error Condition Diagnosis

    BJC-8500 Part 5: Maintenance 6.2 Error Condition Diagnosis 6.2.1 Diagnosis flowchart (1) Hard Power ON START Connect the AC power cord. (hard power ON) EEPROM check EEPROM error Check analog IC (IC1) of carriage board. Other hardware error Measure rank resistance value of BJ cartridge.
  • Page 155 Part 5: Maintenance BJC-8500 (2) Soft Power ON Power ON (soft power ON) EEPROM error? Beeper: 6 times EEPROM error ERROR indicator: Repeatedly blinks 9 times. (See page 5-22) Check carriage and purge unit. Beeper: 6 times HP sense error ERROR indicator: Repeatedly blinks 3 times.
  • Page 156 BJC-8500 Part 5: Maintenance Previous Page All BJ Cartridges installed? Beeper: 5 times BJ cartridge error ERROR indicator: Lights. POWER indicator: Blinks. (See page 5-28.) All ink tanks installed? Beeper: 3 times No ink tank error ERROR indicator: Lights. POWER indicator: Blinks. Check remaining (See page 5-25.) ink level.

  • Page 157: Error Recovery

    Part 5: Maintenance BJC-8500 6.2.2 Error recovery a) Error types <Cause> Carriage position and speed cannot be controlled. 1. Carriage Error <Suspected parts> Carriage unit, carriage belt, carriage cable, carriage shaft, idle pulley, Buzzer: 6 times logic board, carriage driver board, ERROR indicator: Repeatedly carriage motor, encoder head blinks twice.
  • Page 158 BJC-8500 Part 5: Maintenance Previous Page Check voltage of Measurement Point Std. Value carriage motor. Logic board J801 DC35 1.5V Pin No. 1 J801 Replace power cord. Logic Board Replace power supply unit. Measurement Point Std. Value Check carriage motor. Carriage driver board Pin No.
  • Page 159 Part 5: Maintenance BJC-8500 <Cause> Home position cannot be detected. 2. HP Sense Error <Suspected parts> Carriage unit, carriage belt, carriage cable, carriage shaft, idle pulley, Buzzer: 6 times logic board, carriage driver board, ERROR indicator: Repeatedly carriage motor, encoder head blinks 3 times.
  • Page 160 BJC-8500 Part 5: Maintenance <Cause> Purge sensor cannot be initialized. 3. Purge Error <Suspected parts> Purge unit, purge motor, purge motor drive transmission gear, Buzzer: 6 times logic board, power supply unit ERROR indicator: Repeatedly blinks 4 times. <Measure> Measurement Point Sensor Std.

  • Page 161: Sheet Feeder

    Part 5: Maintenance BJC-8500 <Cause> The sheet feeder cannot be initialized. 4. Sheet Feeder <Suspected parts> Sheet feeder unit, pick-up roller, Error sheet feeder drive gear, purge motor, purge motor drive gear, pick-up roller sensor, logic board, Buzzer: 6 times encoder head (carriage board), ERROR indicator: Repeatedly encoder film...
  • Page 162 BJC-8500 Part 5: Maintenance <Cause> The sum of waste ink level in the ink absorber and the 5. Waste Ink waste ink optimizer level in the ink optimizer absorber has reached 95% (waste ink warning) or 100% (waste Warning/Waste ink full error)* Ink Full Error <Suspected parts>...
  • Page 163 Part 5: Maintenance BJC-8500 <Cause> The potential difference calculated by the head 6. BJ Cartridge temperature sensor inside the BJ cartridge is at or higher than the preset temperature. Temperature <Suspected parts> BJ cartridge Rise Error Buzzer: 6 times ERROR indicator: Repeatedly blinks 8 times. <Measure>...
  • Page 164 BJC-8500 Part 5: Maintenance <Cause> (1) Printing paper is not picked up even if the pick-up 9. Paper Pick-up operation is carried out. (2) Printing paper is not ejected even if the paper eject Error/ operation is carried out. Paper Jam Error <Suspected parts>...
  • Page 165 Part 5: Maintenance BJC-8500 (2) When paper is picked up from cassette unit Turn power ON again, and print nozzle check pattern. • Do the paper feed motor, paper feed roller and eject rollers rotate during Check operation of initial operation? paper feed section.
  • Page 166 BJC-8500 Part 5: Maintenance <Cause> (1) The ink tank has run out of ink. 10. Ink-out Error/ (2) The ink tank is not installed. <Suspected parts> Ink tank, ink sensor unit, logic board, No Ink Tank anti-reflection sheet (fixed on inner side Error of main cover), encoder head (carriage board),...
  • Page 167 Part 5: Maintenance BJC-8500 Previous Page • Dirty anti-reflection sheet Check anti-reflection sheet. • External light disturbance? Main Cover Anti-reflection Sheet Ink Sensor Replace anti-reflection sheet. Check ink sensor unit. J901 Ink Sensor Unit Measurement Point Ink Sensor Std. Value J901 Interrupted Approx.
  • Page 168 BJC-8500 Part 5: Maintenance (2) "No ink tank" error Check installation of ink tank. Installed? Install ink tank. Check ink sensor unit. J901 Ink Sensor Unit Logic Board Measurement Point Ink Sensor Std. Value J901 Interrupted Approx. 0V Pin No. 1 Not interrupted Approx.
  • Page 169 Part 5: Maintenance BJC-8500 <Cause> (1) An error in the rank resistance of the BJ cartridge 11. BJ Cartridge has been detected. Error (2) An error in the voltage value of the temperature sensor in the BJ cartridge has been detected. (3) The connection between the contact sections of Buzzer: 4 times the BJ cartridge and the carriage ribbon cable is...
  • Page 170 BJC-8500 Part 5: Maintenance b) Developer unit <Example> • Pressing the POWER button does not turn the 1. Printer does not power ON. <Suspected parts> Power supply unit, logic board, panel power ON board, power cord <Measure> Check connection between power cord outlet and printer Re-connect.
  • Page 171 Part 5: Maintenance BJC-8500 <Example> • All colors are not printed. 2. Defective • Only specific colors are not printed. Printing <1> <Suspected parts> BJ cartridge, ink tank, purge unit, Printing is not carriage ribbon cable, carriage board, logic board Executed <Measure>...
  • Page 172 BJC-8500 Part 5: Maintenance 3. Defective Printing <2> Other Print Defect Symptoms Cause Measure • Spur marks Spurs have deformed. Replace the spurs. appear. • Corrupted Print data still remaining. Turn the printer and computer OFF then back characters ON again. Inappropriate printer Select the printer driver for the BJC-8500.

  • Page 173: Connector Position & Signal Assignment

    Part 5: Maintenance BJC-8500 7. CONNECTOR POSITION & SIGNAL ASSIGNMENT 7.1 Logic Board J805 J801 J701 J702 J703 J1101 J1201 J1003 J902 J903 J904 J901 J201 J802 Figure 5-11 Logic Board J2 (Parallel interface connector) Pin No. Signal IN/OUT Function DATA STROBE See "Part 2.3.1 Parallel interface"...
  • Page 174 BJC-8500 Part 5: Maintenance J3 (Serial interface connector) Pin No. Signal IN/OUT Function SCLK Signal lock Unused TXD- Transmit data S-GND Ground RXD- Receive data TXD+ Transmit data Unused RXD+ Receive data Shield Shield ground of interface cable J201 (Fan control signal cable connector) Pin No.
  • Page 175 Part 5: Maintenance BJC-8500 J702 (Carriage cable connector) Pin No. Signal IN/OUT Function SCKA Black head data transfer clock SDA<2> Serial data A, bit 2: Black head serial data SDA<1> Serial data A, bit 1: Black head serial data SDA<0> Serial data A, bit 0: Black head serial data SDB<2>...
  • Page 176 BJC-8500 Part 5: Maintenance J703 (Carriage cable connector) Pin No. Signal IN/OUT Function Head drive voltage (10.3V±0.1VDC) Head drive voltage (10.3V±0.1VDC) Head drive voltage (10.3V±0.1VDC) Head drive voltage (10.3V±0.1VDC) Head drive voltage (10.3V±0.1VDC) Head drive voltage (10.3V±0.1VDC) Head drive voltage (10.3V±0.1VDC) Head drive voltage (10.3V±0.1VDC) Head drive voltage return Head drive voltage return...
  • Page 177 Part 5: Maintenance BJC-8500 J901 (Ink sensor unit connection) Pin No. Signal IN/OUT Function IZSEN Ink/ink tank detection signal (analog) Ground Sensor drive voltage INKP Sensor drive signal J902 (Panel board connection) Pin No. Signal IN/OUT Function LED0 POWER indicator drive signal LED1 ERROR indicator drive signal IRSNS...
  • Page 178 BJC-8500 Part 5: Maintenance J1201 (Paper feed motor connector) Pin No. Signal IN/OUT Function — A phase+ — A phase- — B phase+ — B phase- 5-37...

  • Page 179: Carriage Board

    Part 5: Maintenance BJC-8500 7.2 Carriage Board Figure 5-12 Carriage Board J1 (Carriage cable connector) Pin No. Signal IN/OUT Function Linear encoder drive voltage Ground Encoder B: Linear encoder B phase Ground Encoder A: Linear encoder A phase Ground SHE3 Short heat enable bit 3: Color head short heat enable bit SHE4 Short heat enable bit 4: Color head short heat enable bit...
  • Page 180 BJC-8500 Part 5: Maintenance J2 (Carriage cable connector) Pin No. Signal IN/OUT Function Ground Ground H5VON Head 5V enable signal RNKOUT Head rank signal (analog) Analog IC control (data load signal) DASLK Analog IC control (data transfer clock signal) DADT Analog IC control (serial data signal) DASH Analog IC control (AC/DC sample hold signal)
  • Page 181 Part 5: Maintenance BJC-8500 J11 (BJ Cartridge cable connector) Pin No. Signal IN/OUT Function DI2A (C-Di1A:Bk2) Black head diode anode RNK2 (C-Rank:Bk2) Black head rank signal BEA2 (BE2:Bk head) Block enable A bit 2: Black head block enable BEA3 (BE3:Bk head) Block enable A bit 3: Black head block enable SHE2 (C-SHE:Bk2) Short heat enable bit 2: Black head short heat enable...
  • Page 182 BJC-8500 Part 5: Maintenance J12 (BJ Cartridge cable connector) Pin No. Signal IN/OUT Function DI5A (C-Di1A:Y) Color head diode anode RNK5 (C-Rank:Y) Color head rank signal BEB2 (BE2:Color head) Block enable B bit 2: Color head block enable BEB3 (BE3:Color head) Block enable B bit 3: Color head block enable SHE5 (C-SHE:Y) Short heat enable bit 2: Color head short heat enable...

  • Page 183: Panel Board

    Part 5: Maintenance BJC-8500 7.3 Panel Board Figure 5-13 Panel Board Pin No. Signal IN/OUT Function Ground Ink/ink tank replacement switch POWER switch RESUME switch DOOR Cover open detection signal ERROR ERROR indicator drive signal POWER POWER indicator drive signal 7.4 Carriage Driver Board Figure 5-14 Carriage Driver Board J1 (Directly attached to carriage driver board)

  • Page 184: Upper Cassette Board

    BJC-8500 Part 5: Maintenance 7.5 Upper Cassette Board 10 1 Figure 5-15 Upper Cassette Board Pin No. Signal IN/OUT Function CSENS1 Paper size detection signal CSENS2 Paper size detection signal CSENS3 Paper size detection signal CSENS4 Paper size detection signal CSENS5 Paper size detection signal CS01...

  • Page 185: Lower Cassette Board

    Part 5: Maintenance BJC-8500 7.6 Lower Cassette Board 1 Figure 5-16 Lower Cassette Board 1 Pin No. Signal IN/OUT Function CSENS1 Paper size detection signal CSENS2 Paper size detection signal CSENS3 Paper size detection signal CSENS4 Paper size detection signal CSENS5 Paper size detection signal CS01...
  • Page 186 BJC-8500 Part 5: Maintenance 7.7 Lower Cassette Board 2 Figure 5-17 Lower Cassette Board 2 Pin No. Signal IN/OUT Function Mechanism drive voltage 35V Plunger (solenoid) drive signal Ground CS02 Cassette selection signal CS01 Cassette selection signal CSENS5 Paper size detection signal CSENS4 Paper size detection signal CSENS3...

  • Page 187: Fan Board

    Part 5: Maintenance BJC-8500 7.8 Fan Board Figure 5-18 Fan Board Pin No. Signal IN/OUT Function +35V Fan drive voltage — Ground Pin No. Signal IN/OUT Function — Fan drive voltage return +35V Fan drive voltage Pin No. Signal IN/OUT Function —...

  • Page 188: Power Supply Unit

    BJC-8500 Part 5: Maintenance 7.9 Power Supply Unit Figure 5-19 Power Supply Unit Pin No. Signal IN/OUT Function Logic drive voltage return Logic drive voltage (5V±0.2V) VENB 10.3V enable signal Pin No. Signal IN/OUT Function Head drive voltage return +10.3V Head drive voltage (10.3V±0.2V) Mechanism drive voltage return +35V...

  • Page 189: Circuit Diagrams

    Part 5: Maintenance BJC-8500 8. CIRCUIT DIAGRAMS 8.1 Parts Layout 8.1.1 Logic board (reduced to 90%) 5-48...
  • Page 190 BJC-8500 Part 5: Maintenance (reduced to 90%) 5-49...

  • Page 191: Carriage Board

    Part 5: Maintenance BJC-8500 8.1.2 Carriage board Figure 5-22 Carriage Board Front Surface Figure 5-23 Carriage Board Rear Surface 5-50...

  • Page 192: Panel Board

    BJC-8500 Part 5: Maintenance 8.1.3 Panel board Figure 5-24 Panel Board Front Surface 5-51...
  • Page 193 Part 5: Maintenance BJC-8500 This page intentionally left blank 5-52...

  • Page 194: Circuit Diagrams

    BJC-8500 Part 5: Maintenance 8.2 Circuit Diagrams 8.2.1 Logic board LOGIC BOARD 01 R231 R232 R233 R234 R240 3.3K,1/16W 3.3K,1/16W 1K,1/16W 1K,1/16W 10K,1/16W IZSEN <08-B8> C232 C234 C236 R215 R214 R213 4700p, 4700p, 4700p, 10K, 10K, 10K, 1/16W 1/16W 1/16W PHASE <03-A1>...
  • Page 195 BJC-8500 Part 5: Maintenance LOGIC BOARD 02 PRINTER CONTROLLER 1/2 SCKB <06-C2> SCKA <06-C6> +3.3V CSEN1 <07-E4> R305 R306 R309 10K,1/16W 10K,1/16W 10K,1/16W C305 LED1 0.1 ,25V <08-E8> LED0 <08-D8> <04-B7> BEA <3..0> <06-B2> SDB <5..0> <06-B2> SDA <5..0> <06-B2> <06-D6>...
  • Page 196 BJC-8500 Part 5: Maintenance LOGIC BOARD 03 +3.3V C408 PRINTER CONTROLLER 2/2 0.1 ,25V RB411D R413 C407 10K,1/16W 0.1 ,25V PHASE <01-B8> R410 R409 R411 <01-D8> INIT IRSNS <12-F4> 10K,1/16W 10K,1/16W 10K,1/16W <08-E8> IF5V <02-C2> SLIN <12-G4> C406 +3.3V ATFD <12-D4>...
  • Page 197 BJC-8500 Part 5: Maintenance LOGIC BOARD 04 CONTROL ROM & EEPROM & SRAM SRAM (256Kbit) IC503 EEPROM (4Kbit) <02-A10> I/O8 IC501 I/O7 I/O6 EECS SWE0 <01-E1> <02-D10> I/O5 EECK <01-F3> C501 I/O4 EEDI <01-E3> TEST 0.1 ,25V C503 EEDO <01-F3> 0.1 ,25V I/O3 I/O2...
  • Page 198 BJC-8500 Part 5: Maintenance LOGIC BOARD 05 DRAM DRAM (16Mbit) DRAM (16Mbit) IC601 IC602 C601 C603 0.1 ,25V 0.1 ,25V LCASA LCASB <03-G1> <03-E10> LCAS LCAS UCASA UCASB <03-G1> <03-G1> <03-E10> <03-G10> WRITE UCAS WRITE UCAS RASA DOEA RASB DOEB <03-G1>...
  • Page 199 BJC-8500 Part 5: Maintenance LOGIC BOARD 06 BJ CARTRIDGE DRIVERS J702 SDA <5..0> <02-B10> SDB <5..0> DASH <02-B10> <03-D1> BEA <3..0> DADT <02-A10> <03-D1> BEB <3..0> <02-B2,03-C1> HE <5..0> HZM6.8FA <03-C1> SHE <5..0> <03-C1> DACK <03-D1> <03-D1> J701 HRANK <01-C8> H5VON <01-E1>...
  • Page 200 BJC-8500 Part 5: Maintenance LOGIC BOARD 07 LOWER CASSETTE & POWER SUPPLY <LOWER CASSETTE> <35V,11V POWER SUPPLY> +35V J805 J801 BK2125HS750 <11-B8,08-B3> FB809 C802 C803 100 ,50V 0.1 ,50V BL1608LM252 <02-B2> FB801 C804 1000p,50V +11V BK2125HS750 FB810 DA801 HZM6.8FA CSO2 BL1608LM252 <03-E10>...
  • Page 201 BJC-8500 Part 5: Maintenance LOGIC BOARD 08 SENSORS & PANEL <INK SENSOR> J901 BK1608HS102 IZSEN FB902 <01-A8> C911 1000p,50V R909 BK1608HS102 910,2W <07-C4,11-B8> FB901 C910 1000p,50V Q903 INKP <03-C10> RN1423 IC901 TC7504F Q902 2SB1260 <06-F2> R905 R906 R901 R904 R907 R908 180, 18K,...
  • Page 202 BJC-8500 Part 5: Maintenance LOGIC BOARD 09 CARRIAGE MOTOR +35V ICP-N38 <CARRIAGE MOTOR> J1003 DCMON BK1608HS102 <03-C10> FB1001 DCDIR BK1608HS102 <03-C10> FB1002 BK1608HS102 DCBRK <03-C10> FB1003 BK1608HS102 CRPWM <01-D1> FB1004 C1001 C1002 C1003 C1004 1000p,50V 1000p,50V 1000p,50V 1000p,50V 5-61...
  • Page 203 BJC-8500 Part 5: Maintenance LOGIC BOARD 10 PURGE MOTOR +35V <PURGE MOTOR> ICP-N25 J1101 PURGE MOTOR DRIVER IC1101 C1102 820p,50V R1104 0.82,0.5W R1101 56K,1/16W R1103 1K,1/16W PGI1 <01-D1> <01-E3> C1104 820p,50V TEA3718SDP PGI0 <01-D1> PURGE MOTOR DRIVER IC1102 C1103 820p,50V R1107 0.82,0.5W R1102...
  • Page 204 BJC-8500 Part 5: Maintenance LOGIC BOARD 11 PAPER FEED MOTOR +35V ICP-N25 <07-C4,08-B3> <PAPER FEED MOTOR> J1201 PAPER FEED MOTOR DRIVER IC1201 C1202 820p,50V R1204 0.75,0.5W R1201 56K,1/16W R1203 1K,1/16W LFI1 <01-D1> <01-B1> C1204 820p,50V TEA3718SDP LFI0 <01-D1> PAPER FEED MOTOR DRIVER IC1202 C1203 820p,50V...
  • Page 205 BJC-8500 Part 5: Maintenance LOGIC BOARD 12 INTERFACE Q1501 DTB113EK CNTR5 <03-G10,08-F1> <IEEE 1284> R1515 Q1502 390,1/10W R1516 100,1/10W CP51 DTC143EKA R1501 1K,1/16W RB411D R1517 100,1/10W STROBE STRB <02-D2> R1502 C1501 3.3K,1/16W 470p,50V DATA1 R1503 C1512 HZM6.8FA 3.3K,1/16W 1000p,50V DATA2 R1504 C1513 3.3K,1/16W...

  • Page 206: Carriage Board

    BJC-8500 Part 5: Maintenance 8.2.2 Carriage board CARRIAGE BOARD 01 SCKA <02-C4> SDA2 <02-B4> SDA1 <02-D4> C201 CP96 0.1 ,50V SDA0 <02-E4> SCKB SDB2 <02-C7> <02-B4> SDA5 SDB1 <02-B7> <02-C4> SDA4 SDB0 <02-D7> <02-E4> +11V SDA3 <02-E7> SDB5 <02-B7> <02-E4> CP95 SDB4 <02-C7>...
  • Page 207 BJC-8500 Part 5: Maintenance CARRIAGE BOARD 02 DI2A DI5A <03-G5> <03-G6> RNK2 RNK5 <03-D2> <03-E2> CP21 BEA2 BEB2 <01-C7> <01-D3> CP22 BEA3 BEB3 <01-C7> <01-D3> CP23 SHE2 SHE5 <01-E7> <01-F3> CP24 SDB2 SDB5 <01-B7> <01-C3> CP25 SDA2 SDA5 <01-A7> <01-B3> DI2B DI5B <03-E9>...
  • Page 208 BJC-8500 Part 5: Maintenance CARRIAGE BOARD 03 LS14 C303 C304 LS14 1000p,50V 0.1 ,50V LS14 TEMPERATURE SENSOR 10K,1/10W TH20-3M503F 51K,1/10W HZM6.8FA C301 C302 100 ,10V 0.1 ,50V <02-B9> 10K,1/10W CP93 CP72 DASH <01-F7> SH_TRG R301 187,1/8W CP92 CP71 IDIN <02-B4> RNK0 CP91 CP70...

  • Page 209: Carriage Driver Board

    BJC-8500 Part 5: Maintenance 8.2.3 Carriage driver board CARRIAGE DRIVER BOARD LS02 FBR06HA121NA-00 FBR06HA121NA-00 CP15 CP17 U1GWJ49 U1GWJ49 10K,1/10W CP16 CP18 CARRIAGE MOTOR DRIVER CP13 CP14 CHOP Vsig CP10 +35V Vpow OUTA 0.1 ,50V CP11 CP12 OUTA TA8440H 0.33,2W COMPARATOR 200K,1/10W 10K,1/10W OUT1...

  • Page 210: Ink Sensor/Fan Board

    BJC-8500 Part 5: Maintenance 8.2.4 Ink sensor/Fan board INK SENSOR / FAN BOARD <POWER SUPPLY> <FAN MOTOR> DTB113ZS (+35V) 5.1K,1/4W 1SS270A (GND) <LOGIC BOARD> 5-69...

  • Page 211: Panel Board

    BJC-8500 Part 5: Maintenance 8.2.5 Panel board PANEL BOARD LED1 SEL6410E(C,D RANK) POWER Indicator [GREEN] POWER LED2 SEL6410E(D RANK) ERROR Indicator [ORANGE] ERROR Cover Open Button DOOR RESUME Button POWER Button BJ Cartridge REPLACE Button SKHVPB SKHVPB SKHVPB MPU10321MLB0 5-70...

  • Page 212: Upper Cassette Board

    BJC-8500 Part 5: Maintenance 8.2.6 Upper cassette board UPPER CASSETTE BOARD ISS270A ISS270A ISS270A ISS270A ISS270A MPU10321MLB0 MPU10321MLB0 MPU10321MLB0 MPU10321MLB0 MPU10321MLB0 5-71...

  • Page 213: Lower Cassette Board

    BJC-8500 Part 5: Maintenance 8.2.7 Lower cassette board LOWER CASSETTE BOARD ISS270A ISS270A ISS270A ISS270A ISS270A MPU10321MLB0 MPU10321MLB0 MPU10321MLB0 MPU10321MLB0 MPU10321MLB0 No parts are inserted on J2 2SD1863 1K,1/4W 1SR139-400 1K,1/4W 5-72...
  • Page 215 The printing paper contains 70% waste paper. PRINTED IN JAPAN (IMPRIME AU JAPON) CANON INC.

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