CANON BJC-50 printer
Service Manual

$6.99
CANON BJC-50 printer<br> Service Manual
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BJC-50 printer Service Manual
CONTENT

Part 1: SAFETY AND PRECAUTIONS
1. PERSONAL SAFETY PRECAUTIONS
1.1 Moving Section of the Printer
1.2 Ink Stains
1.2.1 Ink path
1.2.2 Ink mist
1.3 BJ Cartridge Aluminum Plate
2. MACHINE PRECAUTIONS
2.1 BJ Cartridge
2.1.1 BJ cartridge handling
2.1.2 Automatically capping
2.1.3 When not using the printer
2.1.4 Ink conductivity
2.2 Ink Cartridge
2.2.1 Ink cartridge handling
2.3 Lithium Ion Battery Handling
2.3.1 Initial precautions
2.3.2 Storage precaution
2.4 Printer Handling
2.4.1 Precautions to prevent damage from static electricity
2.4.2 Ink leakage precautions
3. PRECAUTION FOR SERVICE
3.1 Precautions Concerning the Memory Data
3.2 Precautions to Prevent Damage from Static Electricity
3.3 Precautions for Disassembly/Assembly
3.4 Built-in Self-diagnostic Functions

Part 2: PRODUCT SPECIFICATIONS
1. PRODUCT OUTLINE
1.1 Product Outline
1.2 Features
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
1.5.1 BJ cartridge (Color and Black)
1.5.2 Ink cartridge
1.5.3 Lithium ion battery (LB-50)
2. SPECIFICATIONS
2.1 General Specifications
2.2 Paper Specifications
2.3 Interface Specifications
2.3.1 Parallel interface
2.3.2 Infrared interface
2.4 Character Code Tables

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
3.2 Function Setting
3.2.1 Default setting
3.3 Control Buttons
3.3.1 Cleaning the BJ cartridge
3.4 Self Test Print
3.4.1 Demonstration print
3.4.2 Function settings list print
3.4.3 Ripple pattern print
3.4.4 Nozzle check pattern print
3.4.5 All fonts pattern print
3.5 Hexadecimal Dump Test Print
3.6 EEPROM Data Setting
3.6.1 EEPROM data setting mode
3.6.2 Setting EEPROM data
3.6.3 Displaying EEPROM data
3.6.4 EEPROM settings list print
3.7 Rewriting Flash ROM
3.7.1 Flash ROM rewrite mode

Part 4: TECHNICAL REFERENCE
1. OVERVIEW
1.1 Printer Block Diagram
1.2 Initial Flowchart
1.2.1 Print mode
1.2.2 Scanner mode
1.3 Print Signal Flow
1.4 Print Drive
1.4.1 Printing drive control
1.5 Scanner Drive
1.6 Power Off Operation Flow
2. FIRMWARE
2.1 Interface
2.1.1 Compatible mode
2.1.2 Nibble mode
2.1.3 ECP mode
2.1.4 IrDA
2.2 720 dpi Printing/Smoothing Feature
2.2.1 Canon extension mode
2.2.2 Emulation mode
2.3 Printing Modes
2.4 Optimum Printing Direction Control
2.5 Automatic Emulation Switching
2.6 Lithium Ion Battery Recharging
2.6.1 Switching to recharge mode
2.6.2 Recharge protection
2.6.3 Recharge control
3. PRINTER 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
3.3.1 Configuration
3.3.2 Operation
3.4 Paper Feed Mechanism
3.4.1 Outline of paper feed mechanism
3.5 Carriage Section
3.5.1 Carriage section function
3.5.2 Carriage section structure
4. PRINTER ELECTRICAL SYSTEM
4.1 Overview
4.2 Signal Control Section
4.2.1 Control board block diagram
4.2.2 Control section components
4.3 Power Supply Section
4.3.1 Block diagram of power supply section
4.3.2 Power supply section structure
4.3.3 Lithium Ion Battery Recharging Circuit
4.3.4 Lithium Ion Battery
5. DETECTION FUNCTION
5.1 HP Sensor
5.2 Paper End Sensor
5.3 Delivery Sensor
5.4 Temperature Sensor
5.5 Head Temperature Sensor
5.6 Waste Ink Level Detection
5.7 Remaining-ink Level Detection
6. SCANNER CARTRIDGE
6.1 Scanner Cartridge Overview
6.1.1 Block diagram
6.2 Scanner Cartridge Structure
6.3 Signal Contacts
6.4 Scan Mode
6.5 Calibration

Part 5: MAINTENANCE
1. MAINTENANCE
1.1 Periodically-replaced Parts
1.2 Consumables
1.3 Periodic Maintenance
2. SERVICE TOOLS
2.1 List of Tools
3. APPLYING THE GREASE
4. ADJUSTMENT
5. TROUBLESHOOTING
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
7. CIRCUIT DIAGRAMS
7.1 Parts Layout
7.1.1 Control board (Upper section)
7.1.2 Control board (Lower section)
7.2 Circuit Diagrams

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We are in business since 2002 and do our best to give our customers perfect service!

  Richard Bustamante 2007-06-05 15:55:05  
  Muy bueno espero conseguirlo para poder reparar mi impresora
  Ezz Taher 2007-01-04 08:06:15  
  It is great!
  badr rou 2011-03-10 18:37:10  
  Just want to thank you for your service. My Epson printer is back on line again thanks to your easy to follow instructions. Sure beats taking my printer to the dealer!
  john Liang 2018-08-16 18:24:01  
  I took a gamble last week by buying a Epson Pro 4900 for less than $140 thinking if I could not get it going, I can at least take the remaining ink out of the cartridge and use it on my other printers.

The initial nozzle test was not so bad for a printer that was unused for about 1 year, I got six Nozzles firing at around 90% not bad, the next thing I did was the popular Windex treatment, I ran 4 sessions of Windex treatment on the printhead, first one lasted 1 hour, second one lasted 2 hours and third one lasted 4 hours and the last one lasted 8 hours, I got a fully soaked paper towel in my last two treatments, I ran a series of power clean on the non firing nozzles but the Green nozzle remain clogged.
At this stage I thought this program may be my last chance to rescue this printer. I bought the program at 6 pm today, I ran the CL1 clean on OR/GR channel and the green nozzle remain clogged, I then ran the CL2 clean on the same nozzles and the same result, at this point I thought maybe this printer is completely dead but I will give CL3 a shot, I went for dinner when CL3 clean was performed on the printer. I came back immediately printed the nozzle check I got the perfect Nozzle pattern on almost every single colour nozzle except Cyan which has a few bar missing, a quick CL1 clean on Cyan/Magenta fix that.
The next thing I did was to run a quick paper profile on this printer with X-rite software, I printed two test pattern page to calibrate the printer, then come the first real print on my Epson Stylus Pro 4900 it was absolutely brilliant, the best printer I have ever own and the IQ on one of the cheapest glossy media I could find was simply breath taking.

I have to say without this software my $140 purchase would probably end up in the rubbish dump.
I must say I was skeptical about the truthfulness of the success that other has with this software but with myself actually tried this software, I have no reservation but to recommend that anyone who has a clogged Epson Pro 4900 to give this program a shot it may just save your printer.

On the scale of 10 I would probably give it a 11 and it is more than just good!
  Rita Nobs 2017-03-05 21:42:54  
  Hey thanks a lot! Worked perfectly on Epson SX405. Got a free reset to 90% just to check if it works and it worked great! Finished printing all needed doucments! Gonna get a key now! Thanks again!
  Didier MASSEAU 2010-12-07 23:21:53  
  OK, pas de problème compteur remis à 0 C'est reparti sur ma PX700W Merci
  Marcos A da Silva 2011-09-30 05:17:12  
  Funcionou perfeito na minha RX-595! Valeu apena comprar a chave para resetar minha impressora! Recomendo!!!
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