Canon BJC 50 Service Manual

Canon BJC 50 - Color Inkjet Printer Manual

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  • Canon BJC 50 | Service Manual - Page 1
    REVISION 0 APR. 1998 QY8-1358-000 COPYRIGHT © 1998 CANON INC. CANON BJC-50 0498 AB 2.00-0 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Canon BJC 50 | Service Manual - Page 2
    0498 AB 2.00-0
  • Canon BJC 50 | Service Manual - Page 3
  • Canon BJC 50 | Service Manual - Page 4
    . Copyright © 1998 by Canon Inc. CANON INC. BJ Products Quality Support Dept. 16-1, Shimonoge 3-chome, Takatsu-ku, Kawasaki, Kanagawa 213, Japan This manual was produced on an Apple Macintosh™ Power Mac 7300/180 personal computer and Apple LaserWriter™ II NTX-J laser beam printer; final pages were
  • Canon BJC 50 | Service Manual - Page 5
    Operating Instructions This part explains how to operate the unit properly, how it is installed, and how to use the service troubleshooting procedures, and wiring/circuit diagrams, etc. This manual does not contain complete information required for disassembling and assembling the BJC-50 printer
  • Canon BJC 50 | Service Manual - Page 6
    1.2.1 Printer 1.3 BJ Cartridge 1.3.1 Color BJ cartridge [BC-11e] 1.3.2 Black BJ cartridge [BC-10] 1.4 Options 1.4.1 BJ cartridge container 1.4.2 Lithium ion battery (LB-50) 1.4.3 Universal adapter (AD-360U) 1.4.4 Color image scanner cartridge (IS-12) 1.4.5 Interface Cable (BIFC-50) 1.5 Consumables
  • Canon BJC 50 | Service Manual - Page 7
    Part 3: OPERATING INSTRUCTIONS 1. PRINTER SETUP 1.1 Unpacking 1.2 Installation 1.2.1 Installation space 1.2.2 Installation procedure 1.3 Names and Functions of Parts 2. TRANSPORTING THE PRINTER 2.1 Carrying the Printer 2.2 Transporting the Printer 3. PRINTER SERVICING FUNCTIONS 3.1 Error Indications
  • Canon BJC 50 | Service Manual - Page 8
    MECHANISM 3.1 Overview of the Mechanical System of the Printer 3.1.1 Mechanical system configuration 3.2 BJ Cartridge 3.2.1 Color BJ cartridge structure 3.2.2 Black BJ cartridge structure 3.2.3 Bubble jet head-unit structure 3.2.4 Head-maintenance function and structure 3.3 Purge Section Structure
  • Canon BJC 50 | Service Manual - Page 9
    5.1 Overview of Troubleshooting 5.1.1 Definition 5.1.2 Precautions for troubleshooting 5.2 Error Condition Diagnosis 5.2.1 Diagnosis flowchart 5.2.2 Error recovery 6. CONNECTOR POSITION & PIN ALIGNMENT 6.1 Control Board 6.2 Carriage Ribbon Cable 6.3 BJ Cartridge 6.4 Scanner Cartridge IS-12
  • Canon BJC 50 | Service Manual - Page 10
    2 -11 2 -12 2 -13 2 -14 2 -15 2 -16 Printer Appearance Color BJ Cartridge [BC-11e] Black BJ Cartridge [BC-10] Cartridge Container Lithium Ion Battery Universal Adapter Color Image Scanner Cartridge Interface Cable Ink Cartridge Printing Area Printing Area (Envelope) Timing Chart (Compatibility Mode
  • Canon BJC 50 | Service Manual - Page 11
    Page 3 -24 3 -25 Figure 3 -19 Figure 3 -20 Waste Ink Absorber (50% Used Sample) EEPROM Settings List Print (Sample) Part 4: TECHNICAL REFERENCE 4- 1 4- 4 4- 5 4- 6 4- 8 4- 9 4 -10 4 -11 4 -12 4 -13 4 -13 4 -15 4 -19 4 Function Printer Mechanism Color BJ Cartridge Black BJ Cartridge Bubble Jet Head
  • Canon BJC 50 | Service Manual - Page 12
    Page 4 -16 4 -25 4 -26 4 -43 4 -45 4 -49 4 -50 Part 3: OPERATING INSTRUCTIONS Table Table Table 3- 1 3- 2 3- 3 Error Display Function Setting (1) Function Setting (2) Signal Contact Part Cleaning Ink Consumption Battery Temperature Detection Function List of Scanner Cartridge Signal Contacts List
  • Canon BJC 50 | Service Manual - Page 13
    SAFETY PRECAUTIONS 1.1 Moving Sections of the Printer 1.2 Ink Stains 1.3 BJ Cartridge Aluminum Plate 2. MACHINE PRECAUTIONS 2.1 BJ Cartridge 2.2 Ink Cartridge 2.3 Lithium Ion Battery Handling 2.4 Printer Handling 3. PRECAUTION FOR SERVICE 3.1 Precautions Concerning the Memory Data 3.2 Precautions
  • Canon BJC 50 | Service Manual - Page 14
  • Canon BJC 50 | Service Manual - Page 15
    BJC-50 Part 1: Safety and Precautions 1. PERSONAL SAFETY PRECAUTIONS 1.1 Moving Sections of the Printer Be careful not to let your hair, clothes, accessories, etc., become caught in any of the moving sections of the printer. The moving sections of the printer are the carriage belt, carriage ribbon
  • Canon BJC 50 | Service Manual - Page 16
    Precautions BJC-50 1.2 Ink Stains 1.2.1 Ink path Be careful not to touch the ink path of the printer and get stains on the work table, hands, clothes, etc., during repair. The ink path is the nozzle section of the BJ cartridge, the head cap, the head wiper, the maintenance jet receiving section
  • Canon BJC 50 | Service Manual - Page 17
    BJC-50 1.2.2 Ink mist Part 1: Safety and Precautions The BJ cartridge ejects the ink onto the paper. After the printer has been used for a long time or under heavy duty use, a small amount of ink mist bouncing off the paper during printing may soil the platen section and the purge section. This
  • Canon BJC 50 | Service Manual - Page 18
    and Precautions BJC-50 1.3 BJ Cartridge Aluminum Plate Do not touch the aluminum plate of the BJ cartridge. The aluminum plate heats up during printing and becomes particularly hot during continuous high duty printing. It also heats up if printing is operated after the ink in the cartridge has run
  • Canon BJC 50 | Service Manual - Page 19
    removed print head cap and protection tape on the BJ cartridge. For the BJ cartridge, either install it in the printer with the ink cartridge installed or store it in the cartridge container. If the ink cartridge is not attached, poor ink suction due to ink drying or foreign matters can occur. BJ
  • Canon BJC 50 | Service Manual - Page 20
    Part 1: Safety and Precautions BJC-50 2.1.2 Automatically capping When the power is switched off with the POWER button, the printer automatically caps the nozzle section of the BJ cartridge to protect itself and prevent ink leakage. If you unplug the DC plug by mistake and cut off the power supply
  • Canon BJC 50 | Service Manual - Page 21
    BJC-50 2.2 Ink Cartridge 2.2.1 Ink cartridge handling Part 1: Safety and Precautions To prevent poor ink suction due to foreign matters on the ink filter of the print head body, never touch the ink filter of the ink cartridge. When you remove the cap from an ink cartridge, install the ink
  • Canon BJC 50 | Service Manual - Page 22
    Part 1: Safety and Precautions BJC-50 2.3 Lithium Ion Battery Handling 2.3.1 Initial precautions The enclosed lithium ion battery must be installed in the printer and charged prior to its use. To ensure best performance, the lithium ion battery is only charged to 40% of its full capacity at the
  • Canon BJC 50 | Service Manual - Page 23
    BJC-50 Part 1: Safety and Precautions 2.4 Printer Handling 2.4.1 Precautions to prevent damage from static electricity The electrical . Never touch the contact section of the carriage ribbon cable. Contact Section Carriage Ribbon Cable Figure 1-7 Contact Section of the Carriage Ribbon
  • Canon BJC 50 | Service Manual - Page 24
    Part 1: Safety and Precautions BJC-50 2.4.2 Ink leakage precautions Do not carry, pack or store the printer without a BJ cartridge installed. The ink within the cap section will flow back and soil the inside of the printer. The nozzle section of the BJ cartridge is capped automatically when the
  • Canon BJC 50 | Service Manual - Page 25
    BJC-50 Part 1: Safety and Precautions 3. PRECAUTION FOR SERVICE 3.1 Precautions Concerning the Memory Data This printer counts the total waste ink amount for the black BJ cartridge and the color BJ cartridge waste ink full error, handle the printer as explained in Part 5: 5. TROUBLESHOOTING (page
  • Canon BJC 50 | Service Manual - Page 26
    Part 1: Safety and Precautions BJC-50 3.2 Precautions to Prevent Damage from Static Electricity The electrical charge accumulated on a to release the static electricity accumulated on your body before disassembling the printer for service. Control PCB Ass'y Figure 1-9 Electronic System of the
  • Canon BJC 50 | Service Manual - Page 27
    BJC-50 3.3 Precautions for Disassembly/Assembly Part 1: Safety and Precautions The printer is made by combining many plastic parts. When disassembling the printer, be careful not to brake or bend plastic hooks. Take special care not to rip or bend the flexible cables when removing and reinserting
  • Canon BJC 50 | Service Manual - Page 28
    BJC-50 When replacing the IrDA unit, be careful not to touch the light emitting and receiving parts. (Touching these parts may offset the optical axis or soil the lens and possibly inhibit infrared communication.) IrDA unit Figure 1-12 IrDA Unit 3.4 Built-in Self-diagnostic Functions The printer
  • Canon BJC 50 | Service Manual - Page 29
    SPECIFICATIONS Page 2- 1 2- 1 2- 2 2- 3 2- 5 2- 8 2- 9 2- 9 2 -13 2 -15 2 -22 1. PRODUCT OUTLINE 1.1 Product Outline 1.2 Features 1.3 BJ Cartridge 1.4 Options 1.5 Consumable 2. SPECIFICATIONS 2.1 General Specifications 2.2 Paper Specifications 2.3 Interface Specifications 2.4 Character Code Table
  • Canon BJC 50 | Service Manual - Page 30
  • Canon BJC 50 | Service Manual - Page 31
    Outline The BJC-50 bubble-jet full-color portable printer was carefully designed to improve mobility and it is more portable than ever. Lighter and more compact than previous models, the BJC-50 has new features such as the lithium ion battery and the exclusive IEEE 1284 compatible cable. The lithium
  • Canon BJC 50 | Service Manual - Page 32
    Part 2: Product Specifications BJC-50 1.2 Features 1.2.1 Printer • Compact portable size External dimensions: 300 mm (11.8") W ∞ 112.5 mm (4.4") D ∞ 49 mm (1.9") H Weight: Approx. 0.9 kg (2.0 lb) (lithium ion battery included) • Built-in manual sheet feeder • High-speed printing (bursts) HQ mode
  • Canon BJC 50 | Service Manual - Page 33
    BJC-50 1.3 BJ Cartridge 1.3.1 Color BJ cartridge [BC-11e] Part 2: Product Specifications The BC-11e color BJ cartridge used for color printing is disposable. It comprises the print head with 136 nozzles and the replaceable ink cartridges (black and color). The heater board inside the printhead is
  • Canon BJC 50 | Service Manual - Page 34
    360 dpi as the BC-11e. Figure 2-3 Black BJ Cartridge [BC-10] To prevent nozzle clogging, after opening the seal, either install the BJ cartridge on the printer or store it in the BJ cartridge container. Also, never touch the print head (bubble jet nozzles) or wipe it with tissue paper or the like
  • Canon BJC 50 | Service Manual - Page 35
    BJC-50 1.4 Options 1.4.1 BJ cartridge container Part 2: Product Specifications The BJ cartridge container is for storing BJ cartridges removed from the printer. When storing a BJ cartridge close the lid securely. One BJ cartridge container can store either the BC-10 or BC-11e. Store the BJ
  • Canon BJC 50 | Service Manual - Page 36
    Part 2: Product Specifications BJC-50 1.4.3 Universal adapter (AD-360U) There is an Universal adapter adapted for each country to supply DC voltage to the printer. There is also a Universal adapter with AC plug cable, which supplies 100-250V AC input voltage to the printer. Universal Adapter AC
  • Canon BJC 50 | Service Manual - Page 37
    -12) is installed in the printer carriage and the scanner driver is installed in the host computer. The appearance of the color image scanner cartridge IS-12 is identical to the BJ cartridge. IS-1 2 Figure 2-7 Color Image Scanner Cartridge 1.4.5 Interface Cable (BIFC-50) The IEEE 1284 compatible
  • Canon BJC 50 | Service Manual - Page 38
    BJC-50 1.5 Consumables 1.5.1 BJ cartridge (Color and Black) Replacement BJ cartridges are the same as the ones supplied with the printer. 1.5.2 Ink cartridge The consumable ink cartridges are the same as the ink cartridges installed in the BC11e color BJ cartridge and BC-10 black BJ cartridge
  • Canon BJC 50 | Service Manual - Page 39
    film: BJ cloth: Envelope: 4. Printing speed Burst BC-11e (Black printing) 173 cps (10 cpi) 217 cps (10 cpi) BC-10 (Black printing) 346 cps (10 cpi) 434 cps (10 cpi) Portable serial printer (Bubble jet ink on-demand) Manual sheet feed Max. Max. Max. Max. Max. Max. Max. Max. 1 1 1 1 1 1 1 1 sheet
  • Canon BJC 50 | Service Manual - Page 40
    Part 2: Product Specifications BJC-50 10. Printing characters Type face Pitch Roman, Gothic, Courier, Prestige and Draft BJ mode LQ mode HQ mode HS mode 10, 12, 17 cpi, and PS 10, 12, 15, 17, 20 cpi, and PS 36 (H) × 48 (V) dots 18 out of 36 (H) × 48 (V) dots Character matrix 11. Character set
  • Canon BJC 50 | Service Manual - Page 41
    BJC-50 16. BJ cartridge 1) BC-11e Type Print head Ink color No. of pages printed Part 2: Product Specifications Weight 2) BC-10 Type Print head Ink color No. of pages printed Ink cartridge replaceable type of color BJ cartridge (large and small ink droplet producing type.) 136 nozzles (vertically
  • Canon BJC 50 | Service Manual - Page 42
    Part 2: Product Specifications BJC-50 20. Power supply [using the Universal adaptor (AD-360U)] Voltage/Frequency Power Consumption USA/Canada AC120V, 60 Hz UK/Australia AC240V, 50 Hz Max. 30W Europe AC230V, 50 Hz Stand-by Status Max. 5W Recharging Max. 10W 21. External dimensions 300 mm (11.8") W
  • Canon BJC 50 | Service Manual - Page 43
    BJC-50 2.2 Paper Specifications 1. Paper size Letter (8.5" × 11") Legal (8.5" × 14") A4 (210 mm × 297 mm) A5 (148.5 mm × 210 mm) B5 (182 mm × 257 mm) Commercial number 10 envelope (4.1" × 9.5") European DL-size (220 mm × 110 mm) Part 2: Product Specifications 2. Paper type Plain paper Coated paper
  • Canon BJC 50 | Service Manual - Page 44
    BJC-50 4. Printing range 1) Plain paper and special media The shaded position in the following figure shows the recommended printing area for papers and special media. The printer c d e f 220 6.4 10.4 110 22 22 mm mm mm mm mm mm 8.7" 0.25" 0.41" 4.3" 0.87" 0.87" U.S. Commercial number 10 a b c d e f
  • Canon BJC 50 | Service Manual - Page 45
    BJC-50 2.3 Interface cable Material: AWG28 or larger Length: Up to 1.5 m (4.9 feet) Printer side: Japan Molex 52629-2611 (or equivalent) Cable side IN - - - - - Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 Signal STROBE DATA1 DATA2 DATA3 DATA4 DATA5 DATA6 DATA7 DATA8 ACKNLG BUSY P.E. GND 287P026
  • Canon BJC 50 | Service Manual - Page 46
    Part 2: Product Specifications BJC-50 8) Input / output signals q COMPATIBILITY MODE STROBE [Input]: When the printer receives the STROBE signal low pulse width must be greater than 1.0 µs from the computer, the printer reads the data from the interface and sets the BUSY signal high. DATA 1-8 [
  • Canon BJC 50 | Service Manual - Page 47
    BJC-50 Part 2: Product Specifications ERROR [Output]: The printer sets the ERROR signal low if the printer detects an error or out- IN signal is low. ACKNLG [Output] (Ptr Clk): By lowering ACKNLG signal, the printer informs the computer that the data has been outputted. When the AUTO FEED XT signal
  • Canon BJC 50 | Service Manual - Page 48
    Part 2: Product Specifications BJC-50 q ECP MODE STROBE [Input] (Host Clk): STROBE signal handshakes with the BUSY signal (Periph Ack) to transmit data from the computer to the printer during the forward phase. When STROBE signal is low, it indicates that data has been sent to data bus. Reverse
  • Canon BJC 50 | Service Manual - Page 49
    BJC-50 9) Timing 1.0µs 1.0µs 1.0µs min min min Part 2: Product Specifications DATA 1-8 STROBE BUSY ACKNLG 3.5µ BUSY) nDataAvail (ERROR) XFlag (SELECT) H H P P P P TP TP TP Printer status is busy Data bit 3 Data bit 0 Nibble mode supporting Data bit 1 Data bit 7 Data bit 4 Data bit 5 H P 0000 0000
  • Canon BJC 50 | Service Manual - Page 50
    Part 2: Product Specifications BJC-50 2.3.2 Infrared interface 1. IrDA Interface 1) Interface IrDA Version 1.0 compatible 2) Optical specifications Light generation Wavelength: Intensity: Light angle: Light interception Wavelength: Intensity: Light angle: 0.85 to 0.90 µm 40 to 500 mW/Sr ±15° to
  • Canon BJC 50 | Service Manual - Page 51
    BJC-50 2. ASK Interface 1) Interface SHARP Liquid Crystal Pen Computer: Part 2: Product Specifications ZAURUS compatible 2) Optical specifications Light generation Wavelength: 0.85 to 0.90 µm Intensity: 40 to 500 mW/Sr Light angle: ±15° to 30° (along optical axis) Light interception Wavelength:
  • Canon BJC 50 | Service Manual - Page 52
    Part 2: Product Specifications BJC-50 2.4 Character Code Tables Code page 437 Code page 850 2-22
  • Canon BJC 50 | Service Manual - Page 53
    BJC-50 Code page 860 Part 2: Product Specifications Code page 863 2-23
  • Canon BJC 50 | Service Manual - Page 54
    Part 2: Product Specifications BJC-50 Code page 865 Code page 857 2-24
  • Canon BJC 50 | Service Manual - Page 55
    BJC-50 Code page 855 Part 2: Product Specifications Code page 852 2-25
  • Canon BJC 50 | Service Manual - Page 56
    Part 2: Product Specifications BJC-50 Code page 864 Code page 869 2-26
  • Canon BJC 50 | Service Manual - Page 57
    OPERATING INSTRUCTIONS Page 3- 1 3- 1 3- 2 3 -10 3 -11 3 -11 3 -11 3 -12 3 -12 3 -15 3 -16 3 -17 3 -22 3 -23 3 -26 1. PRINTER SETUP 1.1 Unpacking 1.2 Installation 1.3 Names and Functions of Parts 2. TRANSPORTING THE PRINTER 2.1 Carrying the Printer 2.2 Transporting the Printer 3. PRINTER SERVICING
  • Canon BJC 50 | Service Manual - Page 58
  • Canon BJC 50 | Service Manual - Page 59
    BJC-50 Part 3: Operating Instructions 1. PRINTER SETUP 1.1 Unpacking After unpacking, check that you have the following: Universal Adapter BJ Cartridges Cartridge Container AC Plug Cable User's Manual Packing Lithium Ion Battery (LB-50) Interface Cable (BIFC-50) Packing Printer Tapes Box
  • Canon BJC 50 | Service Manual - Page 60
    Part 3: Operating Instructions BJC-50 1.2 Installation 1.2.1 Installation space Install the printer with the clearances given below for the printer to be operated efficiently. The spaces required to install the printer are shown below. 49mm 30 0m m mm 2.5 11 mm 29 Figure 3-2 Installation
  • Canon BJC 50 | Service Manual - Page 61
    BJC-50 1.2.2 Installation procedure Part 3: Operating Instructions a) Connecting the Universal adapter Insert the DC plug into the Universal adapter connector of the printer and the AC plug of the Universal adapter into the outlet. Mount the lithium ion battery on the printer. Figure 3-3
  • Canon BJC 50 | Service Manual - Page 62
    on the computer, infrared rays may not reach the printer's IrDA transmitter) • The printer IrDA module angle is must be within 15 degrees of the vertical and horizontal optical axis. • Scanning a 180dpi color A4 document with the optional scanner cartridge can take up to 30 minutes. The use of
  • Canon BJC 50 | Service Manual - Page 63
    BJC-50 Part 3: Operating Instructions d) Switching on the power Make sure the lock switch is not locked and then press the POWER button to switch on the power. When the printer is powered up, it carries out the initial operation, then moves the carriage to the cartridge replacing position (center
  • Canon BJC 50 | Service Manual - Page 64
    3: Operating Instructions BJC-50 2) Installing the BJ cartridge Open the printer head cover, and install a BJ cartridge in the carriage. Press the CARTRIDGE button to return the carriage to the capping position. Color BJ Cartridge Black BJ Cartridge Figure 3-7 Installing the BJ Cartridge If
  • Canon BJC 50 | Service Manual - Page 65
    BJC-50 Part 3: Operating Instructions f) Replacing the ink cartridge The ink cartridge of the black BJ cartridge and color BJ cartridge can be replaced. (BCI-10, BCI-11 Bk, BCI-11 color) 1) Ink cartridge replacement criteria If the ink runs out or if more than six months have passed after the BJ
  • Canon BJC 50 | Service Manual - Page 66
    Instructions BJC-50 3) Installing the ink cartridge Take out the ink cartridge from its packaging, remove the protective cap for the ink inlet as shown in the figure, and install the ink cartridge in the printer with the reverse order as when removing it. After installing the ink cartridge
  • Canon BJC 50 | Service Manual - Page 67
    BJC-50 Part 3: Operating Instructions h) Manual paper feeding Open the paper feeding tray and manually feed paper one sheet at a time. Align the left side of the paper with the left side of the paper tray and slide the paper guide to keep the paper straight and prevent skewing. Make sure to insert
  • Canon BJC 50 | Service Manual - Page 68
    Part 3: Operating Instructions BJC-50 1.3 Names and Functions of Parts This section describes the names of the parts of the printer and their functions. Head Cover Open the head cover to replace the BJ cartridge, ink cartridge or remove jammed paper. RESUME button Loads paper into the printer or
  • Canon BJC 50 | Service Manual - Page 69
    BJC-50 Part 3: Operating Instructions 2. TRANSPORTING THE PRINTER When carrying or transporting the printer, leave the BJ cartridge in or place it in the cartridge container to prevent ink leakage and drying of cartridge nozzles. The printer may be left installed. 2.1 Carrying the Printer Before
  • Canon BJC 50 | Service Manual - Page 70
    Part 3: Operating Instructions BJC-50 3. PRINTER SERVICING FUNCTIONS 3.1 Error Indications The LED in combination with the beeper indicates the nature of 3 kinds of errors: fatal, error and warning. CARTRIDGE POWER RESUME CHARGE ERROR Figure 3-12 Control Panel Fatal Error: The ERROR indicator
  • Canon BJC 50 | Service Manual - Page 71
    BJC-50 Recoverable errors by customer: Part 3: Operating Instructions 1) Paper pick-up error: Occurs when the paper cannot be fed properly. 2) Paper delivery error: Occurs when the printed paper cannot be ejected. 3) BJ Cartridge check: Occurs when a BJ cartridge is not installed and the cartridge
  • Canon BJC 50 | Service Manual - Page 72
    Part 3: Operating Instructions BJC-50 15) Print position detection error: Occurs during when the home position cannot be detected during the print position detection process. 16) Failed recharge circuit error: Occurs when the printer is turned on and detects the battery's recharging current higher
  • Canon BJC 50 | Service Manual - Page 73
    BJC-50 3.2 Function Setting Part 3: Operating Instructions Each printer function settings are set from the host computer using the printer setup utility in an exclusive Windows compatible driver 9 times 10 times 11 Input/Download Ink Low Warning Auto Emulation Change OFF OFF OFF OFF OFF 3-15
  • Canon BJC 50 | Service Manual - Page 74
    Part 3: Operating Instructions BJC-50 3.3 Control Buttons 3.3.1 Cleaning the BJ cartridge If the printed image is blurred or a print defect occurs, such as a white steaking, print a test pattern to see whether the BJ cartridge is clogged with ink. If nozzles are clogged with ink, use the RESUME
  • Canon BJC 50 | Service Manual - Page 75
    BJC-50 3.4 Self Test Print Part 3: Operating Instructions The printer has the "off-line" self test function which can be executed without connection to a computer. This section explains how to execute the off-line self test. While the printer in the printer base unit may be stained with ink. To
  • Canon BJC 50 | Service Manual - Page 76
    Part 3: Operating Instructions BJC-50 3.4.1 Demonstration print Figure 3-13 Demonstration Print (Sample) 3-18
  • Canon BJC 50 | Service Manual - Page 77
    BJC-50 3.4.2 Function settings list print Part 3: Operating Instructions Figure 3-14 Function Settings List Print (Sample) 3-19
  • Canon BJC 50 | Service Manual - Page 78
    Part 3: Operating Instructions BJC-50 3.4.3 Ripple pattern print Figure 3-15 Ripple Pattern Print (Sample) 3-20
  • Canon BJC 50 | Service Manual - Page 79
    BJC-50 3.4.4 Nozzle check pattern print Part 3: Operating Instructions Print out this pattern using all nozzles of the BJ cartridge. In the event that print defects appear, perform a cleaning operation of the head. If print quality does not improve even after the cartridge is cleaned once or twice
  • Canon BJC 50 | Service Manual - Page 80
    Part 3: Operating Instructions BJC-50 3.5 Hexadecimal Dump Test Print The printer has the "on-line" self test function that outputs hexadecimal dump data when it is connected to a computer. The hexadecimal dump test is carried out when the printer is on line to print the data coming from the
  • Canon BJC 50 | Service Manual - Page 81
    BJC-50 3.6 EEPROM Data Setting 3.6.1 EEPROM data setting mode Part 3: Operating Instructions The required EEPROM data is set in this mode when replacing the control PCB assembly or the printer base unit (including the waste ink absorber). The EEPROM (IC14) on the control PCB assembly contains
  • Canon BJC 50 | Service Manual - Page 82
    Part 3: Operating Instructions BJC-50 3.6.3 Displaying EEPROM data Printer Base Unit 0% 25 % 50 % 75 % 100 % Replacement Purge Unit Side Ink Absorber Waste Ink Figure 3-19 Waste Ink Absorber (50% Used Sample) The EEPROM contains the total waste ink amount and the total number of pages fed
  • Canon BJC 50 | Service Manual - Page 83
    BJC-50 3.6.4 EEPROM settings list print Part 3: Operating Instructions Figure 3-20 EEPROM Settings List Print (Sample) 3-25
  • Canon BJC 50 | Service Manual - Page 84
    Instructions BJC-50 3.7 Rewriting Flash ROM 3.7.1 Flash ROM rewrite mode This mode can only be accessed by a service person. The flash ROM program can be rewritten using this mode. When upgrading the ROM, a floppy disk containing the upgraded program will be provided. Follow these instructions
  • Canon BJC 50 | Service Manual - Page 85
    BJC-50 If you get a rewrite error, reset the following: Part 3: Operating Instructions Error message POWER indicator Make sure that the floppy disk corresponds to the printer model. For example, do not rewrite data for BJC-50 with BJC-50v's. To transfer the correct data, check the connection
  • Canon BJC 50 | Service Manual - Page 86
    Part 3: Operating Instructions BJC-50 This page intentionally left blank 3-28
  • Canon BJC 50 | Service Manual - Page 87
    Emulation Switching 2.6 Lithium Battery Recharging 3. PRINTER MECHANISM 3.1 Overview of the Mechanical System of the Printer 3.2 BJ Cartridge 3.3 Purge Section Structure Ink Level Detection 5.7 Remaining-ink Level Detection 6. SCANNER CARTRIDGE 6.1 Scanner Cartridge Overview 6.2 Scanner Cartridge
  • Canon BJC 50 | Service Manual - Page 88
  • Canon BJC 50 | Service Manual - Page 89
    BJC-50 Part 4: Technical Reference 1. OVERVIEW 1.1 Printer Block Diagram Lithium Ion Battery Universal Adapter CNDC1 Flash ROM CNIF1 CNSEN1 CNSEN2 FONT ROM DRAM CNIR1 Driver Driver CNCR1 CNLF1 CNH POWER CARRETRIDGE SUME SW SW POWER CHARGE ERROR LED LED LED CNBT Control Board EEPROM SW A S I C
  • Canon BJC 50 | Service Manual - Page 90
    Reference BJC-50 1.2 Initial battery initialization begins here. initialization · Thermister check · RAM check · ROM check · ASIC Printer function parameter setting · EEPROM check (Waste ink quantity check) · Low battery Maintenance jet Paper output · If there is any paper in the printer,
  • Canon BJC 50 | Service Manual - Page 91
    the POWER ON operation, the printer starts to preheat the scanner head. Scanner cartridge preheating initialization Wait for command and message Scanner activation command received Scanner activation message issued · Host computer starts up scanner driver. After preheating, start scan · Data
  • Canon BJC 50 | Service Manual - Page 92
    BJC-50 1.3 Print Signal Flow The print signal flow from when the printer signals and outputs the serial data to the bubble jet head. In the bubble jet head, the print data is converted from serial Receive Buffer ASIC b e BJ Cartridge d Control ROM* : Print Data : Control Signal Figure 4-2
  • Canon BJC 50 | Service Manual - Page 93
    BJC-50 1.4 Print Drive Part 4: Technical Reference The printer outputs control signals from the ASIC's printer controller to the BJ head to eject ink from the BJ head for printing. The control signals consist of the print control signal for ejecting ink from the head's nozzles and the temperature
  • Canon BJC 50 | Service Manual - Page 94
    BJC-50 The HEAT ENABLE signals control the ejection of small and large ink droplets as follows: For each color ink ejection by constantly monitoring the head rank, the printer inner temperature and head temperature. The ink cartridge, HENEB A and D are drive signals. When using the color BJ cartridge
  • Canon BJC 50 | Service Manual - Page 95
    BJC-50 1.5 Scanner Drive Part 4: Technical Reference The scanner cartridge is recognized by the scanner cartridge contacts and TOP.S, C.CHA and C.CHK signals. These three signals are equivalent to the TOP, DIODE A and DIODE K signals of the BJ cartridge. Color distinction is performed by ID 0 and
  • Canon BJC 50 | Service Manual - Page 96
    BJC-50 1.6 Power Off Operation Flow Indicator blinks Finish the cleaning and paper feeding operation before turning off Motor, BJ cartridge, and buzzers are all off Paper feed motor, initialization operation
  • Canon BJC 50 | Service Manual - Page 97
    BJC-50 Part 4: Technical Reference 2. FIRMWARE 2.1 Interface The printer supports a parallel interface and IrDA DRAM. After the data is completely written into the receive buffer in the DRAM, the printer controller outputs the ACKNLG signal and sets the BUSY signal to "Low". It then waits for
  • Canon BJC 50 | Service Manual - Page 98
    BJC-50 2.1.2 Nibble mode In nibble mode, the printer transfers data twice to the host computer in 4-bit units. The data is transferred with the PtrClk signal and HostBusy signal handshakes. After the printer printer that the host computer has read the nibble data. Next, after the printer the printer
  • Canon BJC 50 | Service Manual - Page 99
    BJC-50 2.1.3 ECP mode Part 4: Technical Reference In ECP mode, the PeriphAck signal and the HostClk signal handshake to communicate. After the host computer negotiates with the printer, the printer raises the PeriphClk signal and the host computer lowers the HostAck signals. At this point the host
  • Canon BJC 50 | Service Manual - Page 100
    Part 4: Technical Reference BJC-50 2.1.4 IrDA IrDA is an IrDA (1.0) conforming infrared serial communicating device that is built-in on the back side of the printer. Input and output of infrared light is conducted through this device. For wireless infrared one-to-one communication, the computer's
  • Canon BJC 50 | Service Manual - Page 101
    BJC-50 • Base band transmission format (IrDA) Part 4: Technical Reference Infrared Pulses 1 1 0 0 1 0 Data Communication Controller TxD Infrared Transmitter Infrared Receptor Serial Communication Controller RxD Figure 4-10 Base Band Transmission Format (IrDA) • Carrier transmission format (ASK)
  • Canon BJC 50 | Service Manual - Page 102
    BJC-50 b) IrDA standard To connect data transmission devices using infrared communication, the protocols physical and transport layers have been standardized. 1) Physical Layer (IrDA-SIR) 2) Dataring Layer (IrLAP and IrLMP) 3) Transport Layer (IrTP) The Printer data. After the 10 bit data has been
  • Canon BJC 50 | Service Manual - Page 103
    -50 2.2 720 dpi Printing/Smoothing Feature 2.2.1 Canon extension mode Part 4: Technical Reference In Canon extension mode, the printer driver creates 720 dpi data for the horizontal axis and sends it to the printer, allowing the printer to archive high-quality printing. With a black BJ cartridge
  • Canon BJC 50 | Service Manual - Page 104
    Part 4: Technical Reference BJC-50 2.3 Printing Modes Depending on the cartridge installed, the medium, the printing mode, the resolution, the print data, etc., the printer varies the carriage movement, bubble jet head driving frequency, etc., to attain high-quality printing without any bleeding
  • Canon BJC 50 | Service Manual - Page 105
    BJC-50 paper ejection) 64 nozzles (24 nozzles with a color BJ cartridge) for the print data in the printer buffer during single-pass printing, printing is executed , when no print data has been received for over 10 seconds, or when the printer has no print data. Switching the emulation mode The
  • Canon BJC 50 | Service Manual - Page 106
    is installed, the head cap must be on. When the scanner cartridge is installed, the driver must be closed. 2.6.2 Recharge protection The printer checks the following items at 100ms intervals while the battery is recharging. In case of an abnormal occurrence, recharging is immediately stopped
  • Canon BJC 50 | Service Manual - Page 107
    BJC-50 Part 4: Technical Reference 3. PRINTER MECHANISM 3.1 Overview of the Mechanical System of the Printer The mechanical system of the printer is comprised of the ink/BJ cartridge, purge section, paper feed section, and the carriage section. The paper pick up/delivery operation of the
  • Canon BJC 50 | Service Manual - Page 108
    color simply by replacing the BJ cartridge. The ink cartridge (BCI-10) for the BC-10 and ink cartridges (BCI-11Bk, BCI-11color) for the BC-11e can be replaced respectively. b) Purge section The purge section has a function to maintain the high printing quality of the BJ cartridge bubble jet nozzles
  • Canon BJC 50 | Service Manual - Page 109
    ink cartridge absorbs black ink. The color cartridge has three ink sponges, each of which absorbs each color ink. c) Ink supplier The ink supplier supplies a constant amount of ink to the connection among the head, black ink cartridge and color ink cartridge. d) Bubble jet head unit The bubble jet
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    same pressure as the outer atmospheric pressure. b) Ink sponge The ink sponge absorbs black ink. c) Ink supplier The ink supplier supplies a constant amount of ink to the connection between the head and ink cartridge. d) Bubble jet head unit The bubble jet head unit consists of the 128 nozzles and
  • Canon BJC 50 | Service Manual - Page 111
    BJC-50 3.2.3 Bubble jet head-unit structure Part 4: Technical Reference a) Bubble jet nozzles The ink in the ink sponge is filtered through a meshed ink filter, and is fed to the bubble-jet nozzles through the ink path in the holder. When the head-drive-current flows to the heater board of each
  • Canon BJC 50 | Service Manual - Page 112
    4: Technical Reference BJC-50 b) Nozzle arrangement The bubble jet nozzles are arranged in a vertical line at intervals of 1/360 inch. Nozzle 136 Black Nozzles 73 ~ 136 Cyan Nozzles 49 ~ 72 Magenta Nozzles 25 ~ 48 Yellow Nozzles 1 ~ 24 Nozzle 1 Nozzle 128 Nozzle 1 BC-11e BC-10 Figure 4-17
  • Canon BJC 50 | Service Manual - Page 113
    BJC-50 TABLE 4-2 SIGNAL CONTACT PART Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Part 4: Technical Reference IN/OUT Description / (scanner cartridge in use) ...GND for head drive voltage VH (GND for scanner drive voltage 24V) VHG (LAMPG) ...GND for head
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    First time use of BJ cartridge Printer turned on by 2) Less than 72 hours from POWER button last cleaning 3) More than 72 hours from last cleaning BJ cartridge replaced or ink cartridge replaced RESUME button pressed 1) Cleaning 2) Head refreshing Approx. Ink Consumption (g) BC-10 BC-11e 0.36 0.12
  • Canon BJC 50 | Service Manual - Page 115
    BJC-50 Part 4: Technical Reference b) Purging Purging is performed to correct/prevent the non-ejection of ink, which is caused by unnecessary bubbles waste ink absorber. Capping is performed in the following cases: 1. When the printer is turned off with the POWER button 2. When the printer receives
  • Canon BJC 50 | Service Manual - Page 116
    Part 4: Technical Reference BJC-50 3.3 Purge Section Structure 3.3.1 Configuration Cap Wiper Paper Feed W-gear Trigger Gear Paper Feed Gear Pump Gear Pump Arm Cylinder Gear Pump Piston Shaft Waste Ink Absorber Figure 4-21 Purge Section Structure a) Cap section When the carriage is at the home
  • Canon BJC 50 | Service Manual - Page 117
    BJC-50 3.3.2 Operation Part 4: Technical Reference The purge section is driven by the paper feed along with the paper feed gear, which rotates the pump gear and cylinder gear. At this time while the ink is stored in the cap, the cylinder gear rotates so as to move the piston shaft to the right.
  • Canon BJC 50 | Service Manual - Page 118
    Part 4: Technical Reference BJC-50 3.4 Paper Feed Mechanism 3.4.1 Outline of paper feed mechanism In this printer paper is fed manually, one sheet at a time. The paper feed mechanism of the printer is divided into the paper pick-up section and printing/paper-delivery section. These operations are
  • Canon BJC 50 | Service Manual - Page 119
    BJC-50 Part 4: Technical Reference c) Automatic head-to-paper adjustment A coil spring pushes up the eject idle roller and the eject roller towards the paper feed roller
  • Canon BJC 50 | Service Manual - Page 120
    Part 4: Technical Reference BJC-50 3.5 Carriage Section 3.5.1 Carriage section function a) Ink/BJ cartridge mounting function The carriage holds the BJ cartridge and connects it electronically to the control board through the carriage ribbon cable. When the power is off, the carriage is locked at
  • Canon BJC 50 | Service Manual - Page 121
    BJC-50 3.5.2 Carriage section structure Part 4: Technical Reference a) BJ cartridge mounting section The BJ cartridge is fixed to the carriage by the carriage contact spring. When the BJ cartridge is mounted on the carriage, the contacts of the carriage ribbon cable connect with the signal
  • Canon BJC 50 | Service Manual - Page 122
    Battery Recharge Controller IC A S I C Font ROM 8Mbit DRAM 4Mbit MPU Section Parallel IF Host Computer Printer Controller Section CR Motor Driver Control Board Connector for Option CR Motor Paper Feed Motor Driver 23.04 24 MHz MHz Paper Feed Motor Carriage BJ Cartridge Scanner Cartridge
  • Canon BJC 50 | Service Manual - Page 123
    BJC-50 4.2 Signal Control Section 4.2.1 Control board block diagram Part 4: Technical Reference Paper Feed Motor A: Printer Internal Temperature Head Rank Head ID Head Temperature CR Motor B: Voltage Input Recharging Battery Voltage Recharge Current Battery Temperature A B Paper Feed Motor
  • Canon BJC 50 | Service Manual - Page 124
    BJC-50 4.2.2 Control section components a) ASIC (IC6) The ASIC is comprised of the MPU section and the printer controller section. It has a built-in 16-bit CPU and the operating synchronized frequency is 23.04 MHz. The printer from the POWER, RESUME and CARTRIDGE buttons and (ii) EEPROM read
  • Canon BJC 50 | Service Manual - Page 125
    cartridge controller The scanner cartridge controller tries to operate the printer as a scanner once it receives a scanner activation message from the host computer. In the scanner mode, data cannot be removed from the receiver buffer. Recharge controller The recharge controller controls the battery
  • Canon BJC 50 | Service Manual - Page 126
    Part 4: Technical Reference BJC-50 c) DRAM (IC4) Controlled by the ASIC, the 4 M-bit DRAM is used as a receive buffer, download buffer, print buffer, and working area. d) Paper feed motor driver IC/Carriage motor driver IC (IC15/IC16/IC12) The paper feed motor driver IC (IC15/16) is a constant-
  • Canon BJC 50 | Service Manual - Page 127
    BJC-50 4.3 Power Supply Section 4.3.1 Block diagram of power supply section Connector AC ) Vcc 3 Output (5.0±0.25Vdc) Fuse (4.0A) Vcc2, Vcc3 V3- ON ON/OFF Circuit CNBT Lithium Ion Battery 10-14.3Vdc Recharge Circuit CHG- ON VH- ON Step-up Transformer DC/DC Converter VH Output (24.12±0.35Vdc
  • Canon BJC 50 | Service Manual - Page 128
    BJC-50 4.3.2 Power supply section structure a) Input power supply The voltage input to the power supply section is 13.5 ± 0.5 VDC. It is supplied by two sources: the Universal adapter and the lithium ion battery the BJ cartridge is replaced, the ink cartridge is replaced, or the printer is turned
  • Canon BJC 50 | Service Manual - Page 129
    BJC-50 4.3.3 Lithium Ion Battery Recharging Circuit Part 4: Technical Reference Vpp Pre-recharging Circuit Lithium Ion Battery Pack Vpp Constant Current/Voltage Recharging Circuit Constant Current/ Voltage Recharge Control IC Vcc1 C T Vcc1 ASIC CHG-ON Battery Temperature ICP2 Charging
  • Canon BJC 50 | Service Manual - Page 130
    uncapped. When the scanner cartridge is installed, recharging takes place when the scanner driver is not operating. The voltage of the Lithium ion battery cannot be measured directly. Low charge is indicated by the charge indicator lighting green when the battery is installed in the printer and the
  • Canon BJC 50 | Service Manual - Page 131
    BJC-50 Part 4: Technical Reference c) Battery temperature detection The thermistor inside the lithium ion battery pack measures the internal battery temperature and detects whether the battery is installed or not. This thermistor is connected between the T terminal and negative terminal of the
  • Canon BJC 50 | Service Manual - Page 132
    Part 4: Technical Reference BJC-50 5. DETECTION FUNCTION The printer uses HP sensor, paper end sensor, delivery sensor, inside temperature sensor, and head temperature sensor. Also, the capacity of the waste ink absorber is stored in the EEPROM. When the absorber is about to become full a warning
  • Canon BJC 50 | Service Manual - Page 133
    the settings in the original printer driver to the replacement mode before replacing an ink cartridge. The driver will reset the ink counter. TABLE 4-5 DETECTION FUNCTION Detection Function Paper Paper delivery Home position BJ cartridge Ink cartridge Remaining ink Calculation from dot count and
  • Canon BJC 50 | Service Manual - Page 134
    Technical Reference BJC-50 6. SCANNER CARTRIDGE 6.1 Scanner Cartridge Overview The scanner cartridge is a replaceable scanner unit that carries a one-line 128 pixel BASIS. The scanner separates each of the three RGB primary colors of the LED by scanning the same line three times. The color image
  • Canon BJC 50 | Service Manual - Page 135
    BJC-50 6.2 Scanner Cartridge Structure Slit Mirror Part 4: Technical Reference BASIS Field Lens 2 Imaging Lens BASIS Mirror Field Lens Scanning Document Platen LED Diffusion Board Illumination Lens PCB Imaging Lens Diffusion Board Illumination Lens LEDs Figure 4-34 Scanner Cartridge 1) LED Red
  • Canon BJC 50 | Service Manual - Page 136
    has a built-in SRAM used for output buffer memory. Scanner cartridge cannot be disassembled, reassembled. As the imaging lens is used for forming an image on the BASIS, it is moved from its fixed position to adjust the optical path for focusing. Focusing cannot be conducted during servicing. 4-48
  • Canon BJC 50 | Service Manual - Page 137
    BJC-50 6.3 Signal Contacts Part 4: Technical Reference The scanner cartridge is recognized by TOP.S, DIAS and CCHK signals. The scanned image output to the printer is transmitted with a SCLOCK signal in sync with a SDATA signal. The scanner is controlled by the internal register setting signals,
  • Canon BJC 50 | Service Manual - Page 138
    BJC-50 6.4 Scan Mode TABLE 4-7 LIST OF SCAN MODE Scanning Resolution (dpi) 360 300 200 200 180 90 360 360 360 180 180 90 Scanning Image Pixel Width Color ±5°C of the printer's internal temperature at the time is downloaded to the scanner controller. The scanner application requests calibration
  • Canon BJC 50 | Service Manual - Page 139
    Periodic Maintenance 2. SERVICE TOOLS 2.1 List of Tools 3. APPLYING THE GREASE 4. ADJUSTMENT 5. TROUBLESHOOTING 5.1 Overview of Troubleshooting 5.2 Error Condition Diagnosis 6. CONNECTOR POSITION & PIN ALIGNMENT 6.1 Control Board 6.2 Carriage Ribbon Cable 6.3 BJ Cartridge 6.4 Scanner Cartridge IS-12
  • Canon BJC 50 | Service Manual - Page 140
  • Canon BJC 50 | Service Manual - Page 141
    BJC-50 Part 5: Maintenance 1. MAINTENANCE 1.1 Periodically-replaced Parts Level User Service engineer Periodically-replaced parts None None 1.2 Consumables Level User Black BJ cartridge Color BJ cartridge Ink cartridge Consumables BC-10 BC-11e BCI-10 Black BCI-11 Black BCI-11 Color LB-50 Service
  • Canon BJC 50 | Service Manual - Page 142
    Part 5: Maintenance BJC-50 2. SERVICE TOOLS 2.1 List of Tools General tool Phillips screwdriver Flathead screwdriver Multi Mater Tweezers Use For For For For removing screws (M2.6) removing plastic parts troubleshooting fitting and removing flexible cables Special tool Grease (CK-0562-000) Use
  • Canon BJC 50 | Service Manual - Page 143
    BJC-50 Part 5: Maintenance 3. APPLYING THE GREASE The points to grease with a special tool are shown below. Apply a thin coat of grease to the specified points. See the Part Catalog for details of the printer disassembling and reassembling procedures. Take special care not to apply grease to the
  • Canon BJC 50 | Service Manual - Page 144
    Part 5: Maintenance BJC-50 4. ADJUSTMENT No parts need to be adjusted. 5-4
  • Canon BJC 50 | Service Manual - Page 145
    all the connectors and ribbon cables are plugged in. 2. If you repair the printer with its case removed and the Universal adapter or battery pack installed, take utmost care to prevent electric shock from the power supply unit and PCB shorting. 3. Troubleshooting procedures are given in flowcharts
  • Canon BJC 50 | Service Manual - Page 146
    part is defective. 6. After troubleshooting, make sure that all the connectors have been plugged back in correctly and that all the screws are tight. When replacing the control board, check the quantity of waste ink absorbed in the waste ink absorber in the printer base unit, and reset the
  • Canon BJC 50 | Service Manual - Page 147
    BJC-50 5.2 Error Condition Diagnosis 5.2.1 Diagnosis flowchart Part 5: Maintenance Indicators When DC power is supplied START Insert the DC jack of the universal adapter. Leave the lithium ion battery installed. : Lights : Blinks : Does not light Is the printer in the factory mode? No Yes
  • Canon BJC 50 | Service Manual - Page 148
    Part 5: Maintenance BJC-50 When the power is turned on with the POWER button START Press 1 beep Check the inside temperature sensor. No Correct? Yes Thermistor error POWER ERROR Read the low battery value from the EEPROM. 6 beeps Is the test print button pressed? No Yes When the POWER
  • Canon BJC 50 | Service Manual - Page 149
    BJC-50 Part 5: Maintenance Previous page Check the waste ink capacity. No If it is 84000mg or higher, waste ink full error. If it is 83160mg, waste ink capacity warning. No When using battery: If the input voltage is 10.0Vdc or lower, low battery error. If the input voltage is 10.5Vdc or lower,
  • Canon BJC 50 | Service Manual - Page 150
    Part 5: Maintenance BJC-50 Previous page Feed out the paper in the printer. No Is the paper fed out? Yes Check condition for automatic recovery operation. Paper output error. • Detected by the paper delivery sensor POWER ERROR 2 Beeps Check battery voltage. Correct? Yes Detect internal
  • Canon BJC 50 | Service Manual - Page 151
    BJC-50 5.2.2 Error recovery a) Error display Part 5: Maintenance 1. ROM Error During displayed. When replacing the control board, check the amount of waste ink absorbed by the waste ink absorber and reset the EEPROM in the printer base unit. See Part 3: 3.6 EEPROM Data Setting (page 3-23).
  • Canon BJC 50 | Service Manual - Page 152
    Part 5: Maintenance BJC-50 The home position sensor cannot detect the carriage.
  • Canon BJC 50 | Service Manual - Page 153
    BJC-50 Part 5: Maintenance Previous page Check the carriage motor and paper feed motor. Carriage Motor 5 4 3 the control board, check the quantity of waste ink absorbed in the waste ink absorber in the printer base unit, and reset the quantity of waste ink absorbed in the EEPROM. See Part 3: 3.6
  • Canon BJC 50 | Service Manual - Page 154
    BJC-50 Print position correction cannot be detected properly. Carriage motor, control board,home position sensor 5. Print Position Correction Detection Error 6. Low Battery lithium ion battery is incorrect. (10.0Vdc or lower) Lithium ion battery, Universal
  • Canon BJC 50 | Service Manual - Page 155
    BJC-50 Part 5: Maintenance 8. Head Temperature Error Switch the power off and leave the printer for several minutes. The head temperature has risen excessively. BJ head or control board • Do not touch the head because it can
  • Canon BJC 50 | Service Manual - Page 156
    Part 5: Maintenance BJC-50 Previous page Check the BJ head temperature sensor resistance. DiA DiK 10 29 Meter connection Reading + _ 10 29 Conductivity Pin No. 29 10 No conductivity The black BJ cartridge and the color BJ cartridge have the same meter connections and meter readings. Figure 5-5
  • Canon BJC 50 | Service Manual - Page 157
    BJC-50 Part 5: Maintenance The BJ cartridge is removed from a position other than 9. No Head Error Remove the top cover and reinstall the BJ cartridge. the BJ cartridge removal position. BJ cartridge or control board Is an error displayed? Yes No END 1.
  • Canon BJC 50 | Service Manual - Page 158
    Part 5: Maintenance BJC-50 The recharge current exceeds the standard value. • Control board. • The contact points between the lithium ion battery and the printer. 11. Failed Recharging Circuit Error Remove and reinstall the battery. Is an error displayed? Yes
  • Canon BJC 50 | Service Manual - Page 159
    BJC-50 Part 5: Maintenance 12. Paper Feed /Delivery Error • Paper cannot be fed. More Correct? Yes No Replace defective parts or eliminate paper jams. • Print unit is defective. Does the printer feed paper correctly? Yes No 1. Replace the print unit. 2. Replace the control board. •
  • Canon BJC 50 | Service Manual - Page 160
    the carriage BJ cartridge Scanner cartridge Carriage ribbon cable Control board • Replace the BJ cartridge. • Replace the scanner cartridge. 15. No Battery Error The lithium ion battery is not installed. Lithium ion battery. Connection between the printer and the
  • Canon BJC 50 | Service Manual - Page 161
    BJC-50 Part 5: Maintenance 16. Failed Manual Feeding warning The manual fed cut sheet is not inserted far enough into the printer for the paper feed roller to grab it. The paper end sensor detects the sheet but it is not fed into the printer. Paper end sensor •
  • Canon BJC 50 | Service Manual - Page 162
    Part 5: Maintenance BJC-50 The ink low warning is displayed when the ink low warning function is enabled in the exclusive printer driver. Remaining ink in the ink tank is decreasing. The ink consumption calculated from the numbers of dots, maintenance jets, and cleanings exceeds the maximum
  • Canon BJC 50 | Service Manual - Page 163
    BJC-50 b) Symptoms Part 5: Maintenance 1. The Power Does Not Turn On. Check the lock switch. • When the POWER button is pressed, the printer does not turn on. • When POWER button is pressed, the printer does not start initialization. The universal adapter, lithium ion battery
  • Canon BJC 50 | Service Manual - Page 164
    Part 5: Maintenance BJC-50 • LED does not light. • The buzzer does not sound. Test printing cannot be done. • Operation buttons are ineffective. The LED or the beeper is defective. Buttons are defective. Flexible cables are defective. The control board is defective. 2. Control Panel
  • Canon BJC 50 | Service Manual - Page 165
    BJC-50 Part 5: Maintenance 3. BJ Cartridge is Not Recognazed. • The installed BJ cartridge is not recognized. • When the BJ cartridge is installed, the carriage returns to the replacement position. • The installed BJ cartridge is not recognized correctly. The BJ cartridge does not
  • Canon BJC 50 | Service Manual - Page 166
    BJC-50 • The printer does not print at all. • The printer does not print in the middle. • The printer does not print one or more colors. No ink, defective BJ cartridge, defective control board, defective carriage ribbon cable, defective purge unit 4. Print Defect The Printer
  • Canon BJC 50 | Service Manual - Page 167
    BJC-50 • The print is blurred. • White streaks appear. Part 5: Maintenance 5. Print Defect White Streakes Appear. Check the conditions for using the printer and printing paper specifications. The BJ cartridge, carriage ribbon cable, purge unit, or paper feed unit
  • Canon BJC 50 | Service Manual - Page 168
    5: Maintenance BJC-50 6. Print Defect Other Print Problems Symptom • Smeared paper Check Item Ink mist on the platen. Measures Use a soft cloth moistened with water to clean. Clean a few times, If the problem persists, replace the BJ cartridge. Replace printer base unit. • • • • Ink has
  • Canon BJC 50 | Service Manual - Page 169
    BJC-50 • No printing Part 5: Maintenance 7. Faulty Interface Put the printer off-line and do a test print. • An unspecified font is used to print characters. • Text is printed in an unspecified color. The printer driver is set incorrectly. The interface cable is
  • Canon BJC 50 | Service Manual - Page 170
    image Check if white standard was taken using the white calibration sheet. Check the scanner driver setting. Reset the scanner driver. Problems occur when the user's Replace the scanner cartridge. faulty scanner cartridge is installed. Check computer-printer Reconnect cables. connection. 5-30
  • Canon BJC 50 | Service Manual - Page 171
    BJC-50 Part 5: Maintenance 6. CONNECTOR POSITION & PIN ALIGNMENT 6.1 Control Board Upper Section CNOP1 CNCR1 CNH1 CNSEN2 CNBT2 CNSEN1 CNFL1 CNIF1 Lower Section CNIR1 CNBT1 CNDC1 Figure 5-10 Control Board CNIF1 (Parallel Interface Connector) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
  • Canon BJC 50 | Service Manual - Page 172
    Part 5: Maintenance BJC-50 CNH1 (Cartridge Ribbon Cable Connector) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 IN/OUT Description / (scanner cartridge in use) ...GND for head drive voltage VH (GND for scanner drive voltage 24V) VHG (LAMPG) ...GND for head
  • Canon BJC 50 | Service Manual - Page 173
    BJC-50 CNIR1 (IrDA Module Connector) Pin No. 1 2 3 4 5 6 7 8 9 10 Signal name GND MODE +5.0V (Vcc1) GND RXD/PRXD GND TXD/PTXD GND +5.0V (Vcc1) GND IN/OUT Description OUT IrDA unit type switch signal
  • Canon BJC 50 | Service Manual - Page 174
    BJC-50 The BJ cartridge or the scanner cartridge is recognized by the pin No. of connector CNH1 on the control board or by a combination of ID1 and ID0 as shown below. Pin No. 11 12 13 Signal name ID0 ID1 HCONT Cartridge type Low High Black Color, scanner Low Low Low (BC-11e), (IS-12) / High (BC-10
  • Canon BJC 50 | Service Manual - Page 175
    BJC-50 CNOP1 (Optional ASF and Connector) Pin No. 1 2 3 4 5 6 7 8 Signal name OP-VH OP-Vcc1 RXD0 TXD0 SCLK0 +5.0V (Vcc3) OP-ON GND IN/OUT OUT OUT
  • Canon BJC 50 | Service Manual - Page 176
    BJC-50 6.2 Carriage Ribbon Cable 28 29 24 25 26 23 22 21 20 27 16 17 18 19 15 14 13 12 11 3 7 8 9 10 5 6 4 1 2 29 1 Figure 5-11 Carriage Ribbon Cable Pin No. 1 2 3 4 5 6 7 8 9 10 HCLOCK HLATCH HRES HENBB HDATA DIK IN/OUT Description To BJ cartridge See CNH1 GNDH GNDH OUT MCH1 OUT MCH2 VH VH IN
  • Canon BJC 50 | Service Manual - Page 177
    BJC-50 6.3 BJ Cartridge BC-11e Part 5: Maintenance IDATA DIK D CLK LTCLK RE SET VDD BENB2 BENB1 BENB0 EVEN HEAT -B HEAT -D ODD GND L IND (Spare2) ID -1 ID -0 MC H1 SUB Spare1 RANK DIA VH VH MC H2 GND H GND H HEAT HEAT -C -A Figure 5-12 BC-11e Contact Pad 6.4 Scanner Cartridge IS-12
  • Canon BJC 50 | Service Manual - Page 178
    Part 5: Maintenance BJC-50 7. CIRCUIT DIAGRAMS 7.1 Parts Layout 7.1.1 Control board (Upper section) 5-38
  • Canon BJC 50 | Service Manual - Page 179
    BJC-50 7.1.2 Control board (Lower section) Part 5: Maintenance 5-39
  • Canon BJC 50 | Service Manual - Page 180
    Part 5: Maintenance BJC-50 This page intentionally left blank 5-40
  • Canon BJC 50 | Service Manual - Page 181
    BJC-50 7.2 Circuit Diagrams 1 2 3 4 5 6 7 8 9 10 CONTROL PCB ASS'Y 01 Part 5: Maintenance A Vpp CNDC1 0,1/16W C9 2.2µ,16V 5 6 7 8 C3 0.1µ,25V C4 2.2µ,16V C5 0.1µ,25V C6 0.1µ,25V R4 33K,1/16W C7 100p,50V C1 0.1µ,25V C2 2200µ,25V FB1 EMI Vcc1 Vcc1 IC1 R1 22K,1/16W,D 1 2 3 4 CT VSC OUT GND RESET
  • Canon BJC 50 | Service Manual - Page 182
    BJC-50 1 2 Part 5: Maintenance 3 4 5 6 7 8 9 10 ,50V C23 1000p,50V C22 1000p,50V MD MA 10 16 C21 1000p,50V
  • Canon BJC 50 | Service Manual - Page 183
    BJC-50 1 2 3 4 5 6 7 8 9 10 CONTROL PCB ASS'Y 03 Part 5: Maintenance A A D MD MA 20 16 16 10 17 B DRAM(4M) IC8 Vcc1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27
  • Canon BJC 50 | Service Manual - Page 184
    BJC-50 1 2 3 4 5 6 7 8 9 10 CONTROL PCB 50V C51 1000p, 50V C52 1000p, 50V C53 1000p, 50V C54 1000p, 50V C55 1000p, 50V C56 1000p, 50V C57 1000p, 50V Vcc1 R80 10K,1/16W AUTXT ACK BUSY PE SLCT FAULT R87 100,1/16W R88 1K,1/16W C62 1000p, 50V C63 1000p, 50V C64 1000p, 50V C65 1000p, 50V C66 1000p, 50V
  • Canon BJC 50 | Service Manual - Page 185
    BJC-50 1 2 3 4 5 6 7 8 9 10 CONTROL PCB ASS'Y 05 Part 5: Maintenance Vcc1 Vpp A Carriage Motor Driver IC12 CNCR1 1 2 3 4 5 6 7 8 9 10 02-F3> PES Vcc1 R108 18K,1/16W R79 0.01µ,50V Q24 2 3 1 R110 22K,1/16W R111 220,1/16W R112 100K,1/16W C80 1000p,50V R113 180,1/10 R109 18K,1/16W Vcc1 Vcc3 1 2 5 4
  • Canon BJC 50 | Service Manual - Page 186
  • Canon BJC 50 | Service Manual - Page 187
    The printing paper contains 70% waste paper. PRINTED IN JAPAN (IMPRIME AU JAPON) CANON INC.
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QY8-1358-000
REVISION 0
COPYRIGHT
1998 CANON INC.
CANON BJC-50 0498 AB 2.00-0 PRINTED IN JAPAN (IMPRIME AU JAPON)
APR. 1998