Canon BJC-55 Series Service Manual Download Page 46 | Manualshive

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3.2 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,
make sure to touch some metallic part that is grounded to release the static electricity
accumulated on your body before disassembling the printer for service.

Part 1: Safety and Precautions

BJC-50

1-12

Control PCB Ass'y

Figure 1-9 Electronic System of the Printer

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Summary of Contents for BJC-55 Series

Page 1: ...BJC 55 SERVICE MANUAL Canon...

Page 2: ...er Specifications 4 2 Number of Pages Printable of the Cartridges 4 3 Printer Driver Scanner Driver Type 4 3 1Restrictions on IrDA communication under Windows 2000 4 4 Interface Specifications 4 4 1Ir...

Page 3: ...has been eliminated USB I F has been adopted 5 Button reset of the ink low warning is added 6 Demonstration pattern printing is eliminated The other self test print can be performed by the same opera...

Page 4: ...lable Presence of BJ cartridge Available Waste ink amount Available Paper width Not available Distinction of BJ cartridge Available Ink low Available by using the dot count Noise Sound pressure level...

Page 5: ...USB I F Infrared I F Windows 95 98 1 2 4 Windows 2000 3 4 Windows CE X X Macintosh X X Compliant Conditionally compliant X Not compliant 1 The operation of the printer driver supporting USB is assured...

Page 6: ...lem can be avoided by lowering the communication speed 2 If the cleaning operations etc start during printing the error message Write error may be displayed on the host computer When the cleaning oper...

Page 7: ...n the transfer speed is 0 576Mbps and 1 152Mbps 4 PPM Pulse Position Modulation when the transfer speed is 4Mbps 4 4 2 USB Interface Specifications 1 Device structure Self powered device 2 Data transf...

Page 8: ...ues not printed print 1 dot print 2 dots and print 3 dots enabling each pixel to be printed in up to 4 gradations The printer therefore makes three passes using a maximum of 150 more ink than usual Th...

Page 9: ...setting Code Page 858 Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Print mode HQ HQ HQ HQ HQ Left Margin LTR LTR A4 A4 A4 Text Scale Mode Disable Disable Disable Disable Disable Paper Feed Positio...

Page 10: ...Operation mode change BJ BJ Print mode HQ HQ Automatic power off Enable Enable Smoothing Disable Disable Remaining ink Disable Enable Reduction 1 1 1 1 Paper feed position 8 5 mm 8 5 mm Receive buffer...

Page 11: ...tton operation is not possible 3 Make sure that the proper cartridge is installed in the carriage If not install the proper one The ink dot counter reset is effective only to the ink cartridge type in...

Page 12: ...amera or print data is input from the host computer Reprinting of data is possible by pressing the RESUME button and releasing before the beeper sounds Printing cancellation During the printing of ima...

Page 13: ...ve the DC plug of the universal adapter and the Lithium Ion Battery 2 While pressing the RESUME button and Cartridge Replacement button insert the DC plug of the universal adapter and release the butt...

Page 14: ...inks while the Flash ROM is being written to 7 When the short beeps sound twice on the printer side and the Power LED lights the writing operation has completed 8 After confirming the completion of th...

Page 15: ...ach data set when the error is been detected the data has already been written Re enter the writing mode and transfer the correct data If the same error occurs the flash ROM may be damaged Replace the...

Page 16: ...eriodically and only at soft power on As a result the load to the print head caused by applied voltage has been reduced 5V 3V Power Creation Circuit Block Diagram Head Interface Changed Part 14 5V DC...

Page 17: ...eaner when passing through the paper feed roller spread inside the printer and cause failure 2 Open the paper feeding tray 3 Set the spur cleaner with the fabric affixed part of the cleaner face up an...

Page 18: ...Cover QB1 4700 QB1 4701 Instruction Film QB1 4763 QB1 4762 Upper Case QB1 4696 QB1 4697 Control PCB Ass y QG2 3208 QG2 3209 Flash ROM QH8 0893 QH8 0894 Other parts are common with the BJC 55 BJ M40 Fo...

Page 19: ...16W ZD9 8 7 6 5 1 2 3 4 Cd Si V INV Cs Es Ct GND IC5 C14 330p 50V C13 0 1 25V Q2 Q10 3 2 1 3 1 2 R20 1K 1 16W R19 10K 1 16W VH ON 03 B8 05 F5 03 B8 03 F1 02 F1 05 F5 05 F1 R28 51 1 10W Q8 1 2 3 OP Vc...

Page 20: ...S0 CS1 D0 D1 D2 D3 D4 TEST2 SXIN SXOUT SXO SXI TEST1 5VDD VSS VSS 05 F1 05 E1 05 E1 03 A1 A 20 1 R48 3 9K 1 4 R47 2 7K 1 16W Q20 3 2 1 R50 330K 1 16W R49 1K 1 16W MCH0 MCH1 W HT 05 E5 05 E5 R57 10K 1...

Page 21: ...4 11 3 10 2 9 1 8 0 12 13 14 15 16 17 18 19 20 21 22 23 15 14 13 12 11 10 9 8 7 6 02 A6 02 G6 02 B1 02 C1 02 D1 02 D1 02 E1 02 E1 02 E6 02 E6 02 E1 Vcc1 1 CE1 02 A4 17 1 2 3 4 5 6 7 8 16 15 14 13 12...

Page 22: ...02 F3 Vcc1 Vcc1 R82 10K 1 16W C60 0 01 50V RCV SW 02 F3 PWRON 01 F3 R89 6 8 1 16W C67 0 1 25V C69 10 16V C68 1 50V R93 1K 1 16W MODE 02 F2 FRXD 02 F3 TXD 02 F3 Option ASF DA8 DA8 DA7 DA7 LD1 LD2 SW2 1...

Page 23: ...I5 I6 I7 GND O1 O2 O3 O4 O5 O6 O7 COM Paper Feed Motor Driver IC15 C78 1 10V R107 0 68 1 2W D12 WHEAT MCHE0 ALFM ALFM LF PRT 1 2 3 4 8 7 6 5 tpout xout xin vss vdd sio sck cs TIMER IC IC13 X3 32 768KH...

Page 24: ...aw Trademarks The product names and company names appearing in this manual are the registered trademarks or trademarks of the individual companies Copyright This manual is copyrighted and all rights r...

Page 25: ...Instructions This part explains how to operate the unit properly how it is installed and how to use the service mode Part 4 Technical Reference This part outlines the unit operation giving a technical...

Page 26: ...ions Concerning the Memory Data 1 12 3 2 Precautions to Prevent Damage from Static Electricity 1 13 3 3 Precautions for Disassembly Assembly 1 14 3 4 Built in Self diagnostic Functions Part 2 PRODUCT...

Page 27: ...2 3 5 Hexadecimal Dump Test Print 3 23 3 6 EEPROM Data Setting 3 23 3 6 1 EEPROM data setting mode 3 23 3 6 2 Setting EEPROM data 3 24 3 6 3 Displaying EEPROM data 3 25 3 6 4 EEPROM settings list prin...

Page 28: ...LECTRICAL SYSTEM 4 34 4 1 Overview 4 35 4 2 Signal Control Section 4 35 4 2 1 Control board block diagram 4 36 4 2 2 Control section components 4 39 4 3 Power Supply Section 4 39 4 3 1 Block diagram o...

Page 29: ...or Condition Diagnosis 5 7 5 2 1 Diagnosis flowchart 5 11 5 2 2 Error recovery 5 31 6 CONNECTOR POSITION PIN ALIGNMENT 5 31 6 1 Control Board 5 36 6 2 Carriage Ribbon Cable 5 37 6 3 BJ Cartridge 5 37...

Page 30: ...e 2 10 Printing Area 2 14 Figure 2 11 Printing Area Envelope 2 19 Figure 2 12 Timing Chart Compatibility Mode 2 19 Figure 2 13 Timing Chart Nibble Mode 2 19 Figure 2 14 Timing Chart ECP Mode 2 20 Figu...

Page 31: ...ing Function 4 28 Figure 4 21 Purge Section Structure 4 29 Figure 4 22 Purge Operation 4 30 Figure 4 23 Paper Pass 4 32 Figure 4 24 Cartridge Section Function 4 33 Figure 4 25 Carriage Section Structu...

Page 32: ...on Setting 2 Page Part 4 TECHNICAL REFERENCE 4 16 Table 4 1 Printing Modes and Heating Methods 4 25 Table 4 2 Signal Contact Part 4 26 Table 4 3 Cleaning Ink Consumption 4 43 Table 4 4 Battery Tempera...

Page 33: ...1 5 2 MACHINE PRECAUTIONS 1 5 2 1 BJ Cartridge 1 7 2 2 Ink Cartridge 1 8 2 3 Lithium Ion Battery Handling 1 9 2 4 Printer Handling 1 11 3 PRECAUTION FOR SERVICE 1 11 3 1 Precautions Concerning the Me...

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Page 35: ...cable and carriage which are driven by the carriage motor and the paper feed gear and roller pinch roller eject roller and spurs which are driven by the paper feed motor 1 1 BJC 50 Part 1 Safety and...

Page 36: ...harmful to the human body but it does contain an organic solvent Black ink isopropyl alcohol 67 63 0 glycerin 56 81 5 ethyleneglycol 107 21 1 Color ink isopropyl alcohol 67 63 0 Be careful not to get...

Page 37: ...k mist bouncing off the paper during printing may soil the platen section and the purge section This soiling may soil the paper or the hands or clothes of service personnel so wipe it off with a soft...

Page 38: ...h line until the BJ cartridge cools down Also ERROR indicator will blink and printing will slow down If this temperature continues for more than a certain period of time the beeper sounds 8 times the...

Page 39: ...revent clogging at the nozzles due to ink drying or foreign objects Do not reinstall the removed print head cap and protection tape on the BJ cartridge For the BJ cartridge either install it in the pr...

Page 40: ...cartridge container Do the same when carrying shipping or storing the printer If you remove the BJ cartridge from the printer and leave it as it is foreign matters may stick or dry ink may clog the no...

Page 41: ...rying or foreign matters Do not remove the ink cartridge unless you are replacing it Do not use the protection cap removed from the ink cartridge to store the ink cartridge Install the ink cartridge i...

Page 42: ...f when charging is finished The lithium ion battery serves both as a battery when the Universal adapter is not connected and a manual paper feed guide A NO BATTERY ERROR occurs ERROR and POWER indicat...

Page 43: ...umulated on a person when clothes rub can damage electric elements or change their electrical characteristics Never touch the contact section of the carriage ribbon cable 1 9 BJC 50 Part 1 Safety and...

Page 44: ...side of the printer The nozzle section of the BJ cartridge is capped automatically when the power is switched off with the POWER button When the power is turned off the carriage is locked so that it d...

Page 45: ...error is displayed and the printer stops operating before the waste ink absorber is filled with waste ink After the EEPROM is rest the data it contained cannot be printed out with a test printout If y...

Page 46: ...ts or change their electrical characteristics In order to prevent static electricity make sure to touch some metallic part that is grounded to release the static electricity accumulated on your body b...

Page 47: ...make sure the cable is fully inserted in the connector Details of disassembly and reassembly procedures are given in the Parts Catalog Some of the plastic parts contain glass fibers for extra rigidit...

Page 48: ...possibly inhibit infrared communication 3 4 Built in Self diagnostic Functions The printer has built in self diagnostic functions to judge hardware defects The results of self diagnosis are indicated...

Page 49: ...UTLINE 2 1 1 1 Product Outline 2 2 1 2 Features 2 3 1 3 BJ Cartridge 2 5 1 4 Options 2 8 1 5 Consumable 2 9 2 SPECIFICATIONS 2 9 2 1 General Specifications 2 13 2 2 Paper Specifications 2 15 2 3 Inter...

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Page 51: ...AC power is not available The new IEEE 1284 compatible cable has a slim printer connector and it is less bulky than connector cables used in previous models Another feature is the IrDA module which h...

Page 52: ...des a BJ cartridge container for storing a BJ cartridge when it is not installed in the printer Power on off button Software power switch used The printer does not have a mechanical power switch that...

Page 53: ...refreshing cannot restore the print quality replace the BJ head If the ink runs out or if more than six months have passed after the BJ cartridge was unsealed and the print quality is not improved by...

Page 54: ...head If the ink runs out or if more than six months have passed after the BJ cartridge was unsealed and the print quality is not improved by performing cleaning once or twice the ink cartridge should...

Page 55: ...ridge is not attached ink may spill out of the nozzles and may be clogged with ink When storing a BJ cartridge in the container do not attach the protection tape and head cap to the cartridge as color...

Page 56: ...ach 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 Part 2 Product Specifications BJC 50 2 6 AC...

Page 57: ...r The appearance of the color image scanner cartridge IS 12 is identical to the BJ cartridge 1 4 5 Interface Cable BIFC 50 The IEEE 1284 compatible bidirectional parallel interface cable uses a Canon...

Page 58: ...23 sheets HQ mode 7 5 duty per color pattern Color Approx 30 sheets HQ mode 7 5 duty per color pattern BCI 10 Black ink cartridge Black Approx 140 sheets HQ mode 1500 character pattern 1 5 3 Lithium i...

Page 59: ...rection automatically selected according to the print data Bidirectional Unidirectional 6 Print width Max 203 2mm 8 7 Line feed speed Approx 136 ms line 128 360 line feed 8 Built in print control mode...

Page 60: ...4 compatible IrDA 1 0 compatible Part 2 Product Specifications BJC 50 2 10 BJ mode LQ mode Pitch 10 cpi 5 cpi 17 cpi 8 5 cpi 12 cpi 6 cpi PS 10 cpi 5 cpi 17 cpi 8 5 cpi 12 cpi 6 cpi 20 cpi 10 cpi 15 c...

Page 61: ...olor Black No of pages printed Approx 140 pages HQ mode cartridge 1500 character pattern Approx 280 pages HS mode cartridge Weight Approx 26g including black ink cartridge 17 Detection functions Paper...

Page 62: ...W 112 5 mm 4 4 D 49 mm 1 9 H 22 Weight Approx 0 9 kg 2 0lbs including lithium ion battery Part 2 Product Specifications BJC 50 2 12 USA Canada UK Australia Europe Voltage Frequency AC120V 60 Hz AC240V...

Page 63: ...fanfold paper and labels 3 Print paper Usable Usable However print quality and feedability may be deteriorated Blank Not usable PB PPC BJ Manual paper feed at all times one page at a time 2 13 BJC 50...

Page 64: ...216 6 4 279 3 3 mm mm mm mm mm 8 5 0 25 11 0 0 12 0 3 Legal size a b c d e 216 6 4 356 3 7 6 mm mm mm mm mm 8 5 0 25 14 0 0 12 0 3 Recommended Printing Area A4 size a b c d e 210 3 4 297 22 22 mm mm...

Page 65: ...mizawa Components FCN 287P026 G E or equivalent 7 Input output signals and pin layout 1 The level is raised to 5 0V at 390 2 N C means no connection 3 The level is raised to 5 0V at 5 6k 2 15 BJC 50 P...

Page 66: ...is full of data A printer error condition such as out of paper paper jamming etc has occurred P E Output The printer sets Paper End signal high when it determines that it has run out of the paper or...

Page 67: ...es that the printer is operating under bidirectional mode After completing the nibble mode SELECT IN signal is low ACKNLG Output Ptr Clk By lowering ACKNLG signal the printer informs the computer that...

Page 68: ...gnal is high at the beginning of negotiation and remains high during the ECP mode This indicates that the printer is operating under bidirectional mode After completing the ECP mode SELECT IN signal i...

Page 69: ...ELECT TP TP TP TP minimum setup time TP TP Data bit 6 TP TP Data bit 3 Data bit 0 Data bit 1 Data bit 5 Data bit 4 Data bit 7 Nibble mode supporting Not transferable 0001 0000 1284 Active SELECT IN Da...

Page 70: ...angle Max 15 along optical axis 3 Transfer speed 9600 19200 38400 57600 115200 bps 4 Communication method Half duplex start stop system bidirectional 5 Communication distance 0 to 1 m 6 Maximum receiv...

Page 71: ...m2 to 500 mW cm2 Light angle Max 15 along optical axis 3 Transfer speed 9600 bps 4 Communication method Half duplex start stop system unidirectional 5 Communication distance Approx less than 30 cm 6 M...

Page 72: ...2 4 Character Code Tables Code page 437 Code page 850 Part 2 Product Specifications BJC 50 2 22...

Page 73: ...Code page 860 Code page 863 2 23 BJC 50 Part 2 Product Specifications...

Page 74: ...Code page 865 Code page 857 Part 2 Product Specifications BJC 50 2 24...

Page 75: ...Code page 855 Code page 852 2 25 BJC 50 Part 2 Product Specifications...

Page 76: ...Code page 864 Code page 869 Part 2 Product Specifications BJC 50 2 26...

Page 77: ...s 3 11 2 TRANSPORTING THE PRINTER 3 11 2 1 Carrying the Printer 3 11 2 2 Transporting the Printer 3 12 3 PRINTER SERVICING FUNCTIONS 3 12 3 1 Error Indications 3 15 3 2 Function Setting 3 16 3 3 Contr...

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Page 79: ...ou have the following 3 1 BJC 50 Part 3 Operating Instructions Lithium Ion Battery LB 50 Interface Cable BIFC 50 User s Manual Packing Packing Printer Box Tapes BJ Cartridges Universal Adapter Cartrid...

Page 80: ...turdy surface Do not install it in places where it is subjected to vibration Do not install the printer in places where it is exposed to direct sunlight or near a heater or air conditioner where the t...

Page 81: ...When the RESUME button is held down together and the Universal adapter is plugged in the service function EEPROM data setting mode is activated See Part 3 3 6 EEPROM Data Setting page 3 23 for details...

Page 82: ...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 bidirectional centron...

Page 83: ...sed however it cannot print small dots 1 Removing the cap from the print head of the BJ cartridge Remove the BJ cartridge from the cartridge pack then remove the orange head cap and tape protecting th...

Page 84: ...age to the BJ cartridge replacing position center of the printer Lift off the BJ cartridge Install another BJ cartridge press the CARTRIDGE button to return the carriage to the capping position Place...

Page 85: ...if one of them runs out If the print quality does not improve after replacing the ink cartridge perform head refreshing once or twice If the print quality does not still improve the BJ cartridge must...

Page 86: ...cartridge If the BJ cartridge is removed from the printer place it in the container If the BJ cartridge is not stored in the container nozzles may be clogged with ink the BJ head may be scratched or t...

Page 87: ...e 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 the sheet far in until it stops Hold the sheet until th...

Page 88: ...n or return it to the original capping position when replacing the BJ cartridge or ink cartridge ERROR CHARGE Indicator Error when light is orange Displays condition of error Lighting Recoverable erro...

Page 89: ...edge of the printer If it is not at the capping position turn the printer on again and perform step 1 and subsequent steps to move the carriage to the capping position 5 Slide the Lock switch to the...

Page 90: ...ge Lights Lights Lights Lights Lights Lights Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks POWER LED Green Lights Lights Lights Lights...

Page 91: ...t this point the printer may still be operated with an Universal adapter Also occurs when the reserve recharging current is lower than a certain set value while the battery is recharging Recharging is...

Page 92: ...ss 16 Failed recharge circuit error Occurs when the printer is turned on and detects the battery s recharging current higher than set value at the time A recharging current higher than the set value m...

Page 93: ...mark Factory default setting for USA LV model Factory default setting for HV model TABLE 3 3 FUNCTION SETTING 2 Operation Mode change Print Mode Reduction Mode Font A4 Letter Page Length Taxt scale Sm...

Page 94: ...indicator lights Cleaning takes approx 27 seconds After cleaning test print the nozzle check pattern to check if the clogged nozzles have recovered To print the nozzle check pattern hold down the POW...

Page 95: ...ds Do not use any paper whose width is less than the A4 size paper width when executing a print test Test print data is designed to be printed on A4 sized sheets so if any paper whose width is less th...

Page 96: ...3 4 1 Demonstration print Part 3 Operating Instructions BJC 50 3 18 Figure 3 13 Demonstration Print Sample...

Page 97: ...3 4 2 Function settings list print 3 19 BJC 50 Part 3 Operating Instructions Figure 3 14 Function Settings List Print Sample...

Page 98: ...n magenta yellow Function setting on 1 off 0 X X X X X X X X X X X X X X X X X X X No 13 Unused No 1 No 1A BJ mode Control ROM version Number of monochrome prints Total number of monochrome dots Numbe...

Page 99: ...Cleaning the BJ cartridge page 3 16 3 4 5 All fonts pattern print To stop the test print press the POWER button 3 21 BJC 50 Part 3 Operating Instructions BC 11e Printed with the first nozzle Printed w...

Page 100: ...ata Hold down the POWER button until the beeper sounds 5 times release the button and set a sheet of paper in the manual paper feeder to start printing the on line self test Printing starts after the...

Page 101: ...ng down the RESUME button insert the DC plug of the Universal adapter into the printer 3 While holding down the RESUME button and the CARTRIDGE button press the POWER button Release all the buttons wh...

Page 102: ...3 While holding down the RESUME button and the CARTRIDGE button press the POWER button until one long and short beeper sounds Every time the CARTRIDGE button is pressed a beeper sounds When the RESUM...

Page 103: ...3 6 4 EEPROM settings list print 3 25 BJC 50 Part 3 Operating Instructions Figure 3 20 EEPROM Settings List Print Sample...

Page 104: ...R indicator will light The printer is now in the flash ROM rewrite mode and ready to receive the rewrite program b Resetting the Host Computer 1 Start up the computer and go to the MS DOS prompt 2 Con...

Page 105: ...ite data has been transferred Hence data prior to the error is already rewritten Re enter the rewrite mode and transfer the connect data If the same error recurs the flash ROM might be damaged In that...

Page 106: ...Part 3 Operating Instructions BJC 50 3 28 This page intentionally left blank...

Page 107: ...w of the Mechanical System of the Printer 4 21 3 2 BJ Cartridge 4 28 3 3 Purge Section Structure Page 4 30 3 4 Paper Feed Mechanism 4 32 3 5 Carriage Section 4 34 4 PRINTER ELECTRICAL SYSTEM 4 34 4 1...

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Page 109: ...S I C Control Board Universal Adapter CNDC1 DRAM Flash ROM FONT ROM POWER LED CHARGE LED ERROR LED CAR TRIDGE SW RE SUME SW POWER SW Driver Driver CNCR1 CNLF1 CNH CNSEN1 CNSEN2 Carriage Motor Paper Fe...

Page 110: ...R button Carriage motor runs Carriage moves to its home position Home position detection Print position correction value setting If there is any paper in the printer it is fed out Temperature detectio...

Page 111: ...d and performs the POWER ON operation the printer starts to preheat the scanner head 4 3 BJC 50 Part 4 Technical Reference Scanner cartridge preheating initialization After preheating start scan Scan...

Page 112: ...in the ASIC c The print data is stored in the DRAM s print buffer d When the ASIC receives the command from the DRAM to start printing it receives print data stored in the DRAM s print buffer At the s...

Page 113: ...rature and head temperature are monitored and the heater drive pulse width is varied before the pulse is output Furthermore the print drive signal from the printer controller is transferred to the BJ...

Page 114: ...36 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 HDATA HCLOCK Odd ENB Even ENB B ENB 0 B ENB 1 B ENB 2 H ENB A B C D Odd ENB Even ENB B ENB 0 B ENB 1 B ENB 2 H ENB A B C D Data transmission...

Page 115: ...hnical Reference Terminal No 1 2 5 6 9 10 11 12 13 14 19 20 21 22 23 24 25 26 28 29 Scanner Signal Signal Name Polarity LAMP G n a LAMP G n a V LAMP n a V LAMP n a TOP S O DIAS ID 0 O ID 1 O SQW VSS n...

Page 116: ...g operation before turning off Indicator blinks Motor BJ cartridge and buzzers are all off In case it is not capped Paper feed motor initialization operation In case of cartridge replacement mode No c...

Page 117: ...ROBE BUSY and ACKNLG handshake signals When the printer receives the data Data 1 8 and a STROBE signal from the host computer and if the STROBE signal is low then the printer controller which controls...

Page 118: ...h the nibble mode it raises the HostBusy signal This signals the printer that the host computer has read the nibble data Next after the printer confirms that the HostBusy signal is low for a second ti...

Page 119: ...host computer the host computer s ReverseRequest signal is lowered The printer lowers the AckReverse signal raises the PeriphRequest signal and prepares the data to be sent on the bus In reverse trans...

Page 120: ...he IrDA transmission end should be located within the shown circular cone distance 1 m angle 15 from the light axis The infrared transmitter and the receiver are integrated into one unit a Transmissio...

Page 121: ...ion Controller TxD Infrared Receptor Serial Communication Controller RxD 1 1 0 0 1 0 Electric Signals 1 1 0 0 1 0 Infrared Pulses Data 0 Infrared pulse emission Data 1 No infrared pulse emission Figur...

Page 122: ...the base band format As a communication method it employs a start stop synchronized half duplex communication and the transfer speeds are 9600 19200 38400 57600 115200 bps In start stop synchronized c...

Page 123: ...ng two dot printing for each pixel In the case of two dot printing the second dot is printed in the 720 dpi position As a result this method enables the printer to archive high degree gradation printi...

Page 124: ...rinting method for the respective printing modes are listed below When the print resolution is 720 dpi print data is not thinned When the print resolution is 720 dpi processing to prevent colors runni...

Page 125: ...program can be used to turn on or off the automatic switching of the emulation mode Control command recognition By recognizing the control command received from the host computer the printer can deter...

Page 126: ...al occurrence recharging is immediately stopped and WARNING or ERROR messages will be displayed Check Items 1 Proper Universal adapter drive mechanism 2 Lithium ion battery installation 3 Normal tempe...

Page 127: ...and the BJ cartridge maintenance operation are carried out by the paper feed motor and carriage motor 4 19 BJC 50 Part 4 Technical Reference Black BJ Cartridge Color BJ Cartridge Ink BJ Cartridge Wip...

Page 128: ...r feed section Paper must be fed manually one sheet at a time The built in manual paper feeder can take cut sheets up to Legal size When a cut sheet is inserted into the manual paper feeder unit and d...

Page 129: ...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 head unit consi...

Page 130: ...ame 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 in...

Page 131: ...illed with ink The heaters and their electrical elements within the bubble jet head are formed on a silicon plate by means of semiconductor technology A photosensitive resin layer nozzle wall and plas...

Page 132: ...ntact part to transfer control signals including print signal to the bubble jet nozzles Part 4 Technical Reference BJC 50 4 24 Nozzle 1 Nozzle 128 Nozzle 1 Nozzle 136 Yellow Nozzles 1 24 Magenta Nozzl...

Page 133: ...cognition signal Head temperature sensor diode anode Scanner cartridge recognition signal BJ cartridge black color detection signal Scanner monochrome color detection signal BJ cartridge black color d...

Page 134: ...The cleaning operation is performed in the purge section The cap cylinder and pump are operated by the gears and cams which are driven by the paper feed motor See Part 4 3 3 Purge Section Structure pa...

Page 135: ...aper feeder d Wiping Wiping operation is performed to correct prevent the non ejection of ink which is caused by paper powder on the head faceplate or by the foreign materials in ink The wiper is set...

Page 136: ...ached to the wiper is removed by the aluminum plate on the head Moreover when the wiper comes down the ink remaining on it is splashed on the pump gear c Pump section The pump contains a rubber piston...

Page 137: ...s time while the ink is stored in the cap the cylinder gear rotates so as to move the piston shaft to the right After that the piston shaft is moved to the left so that the ink in the cap is absorbed...

Page 138: ...E button The paper feed roller driven by the paper feed motor will feed in the paper to its set position b Printing Paper delivery section The printing section consists of the paper feed roller the pi...

Page 139: ...roller towards the paper feed roller and the spurs to maintain a constant head to paper distance regardless of paper thickness Hence a paper thickness lever is not necessary and there is no need to a...

Page 140: ...nance function The printer performs the wiping operation and cleaning operation for the BJ cartridge by controlling the position of carriage 1 Setting and releasing the wiper When the carriage moves h...

Page 141: ...nsor attached to the rear of the carriage detects the home position edge the carriage is controlled with the stepping pulses transmitted to the carriage motor The pulses driving the carriage motor are...

Page 142: ...d in the recharging circuit to recharge the lithium ion battery Part 4 Technical Reference BJC 50 4 34 23 04 MHz CAR TRIDGE SW RE SUME SW POWER SW POWER LED CHARGE LED Error LED RTC EEPROM 32 768KHz 2...

Page 143: ...HE BJ Cartridge Scanner Cartridge Paper Feed Motor Driver BENB HENB P87 P64 P55 AD 0 16 Flash ROM Font ROM 4Mbit 8Mbit A 1 21 D 0 15 CE 1 LPB1 LPB2 3 A21 MD0 15 A Printer Internal Temperature Head Ran...

Page 144: ...h data reception initial interrupt request and other signals Each signal is inputted to each port and interrupt processing is executed A D converter The following analog signals are detected by the bu...

Page 145: ...the DRAM s print buffer from parallel to serial and sends the serial data to the print head For large and small dot printing the print head controller outputs 4 heat enable signals HENBA HENBB HENBC...

Page 146: ...ASIC the EDO TE CLK and TIDIO signals the EEPROM data is read into the ASIC when the hardware software is powered ON The data is written onto the EEPROM when the hardware software is powered OFF The...

Page 147: ...V3 ON V2 ON VH Output 24 12 0 35Vdc Vpp Output Step down Transformer ON OFF Circuit Step up Transformer Reset Circuit Voltage Level Detection Battery Shutdown Control Circuit Lithium Ion Battery 10 1...

Page 148: ...is turned OFF with the POWER button d Vcc3 output The Vcc3 5VDC output controlled by the ASIC is supplied to operate the interface paper sensor and HP sensor When the POWER button is turned OFF with...

Page 149: ...ASIC CHG ON DCLEV Battery Voltage Detection Circuit Charging Current Detection Amplifier Input Voltage Detection Circuit Constant Current Voltage Recharging Circuit Constant Current Voltage Recharge...

Page 150: ...nder high temperatures self discharge is accelerated and this may lead to rapid over discharge Chances of reviving an over discharged battery that was left unused for an extended period of time is ver...

Page 151: ...temperature is normal If it is the recharging will begin 4 43 BJC 50 Part 4 Technical Reference TABLE 4 4 BATTERY TEMPERATURE Battery temperature THBAT 30 C THBAT 0 C THBAT 0 C THBAT 45 C THBAT 0 C T...

Page 152: ...h type sensor detects whether paper has been delivered 5 4 Temperature Sensor The temperature sensor on the control board detects the temperature inside the printer The ASIC detects a change in the th...

Page 153: ...run out The function is enabled or disabled by the BJ controller The dot counter for each color of ink in the ASIC counts the number of dots ejected When cleaning is performed ink is consumed by purgi...

Page 154: ...platen The light rays hit the image and using an imaging lens the reflected light rays are converged onto the BASIS The converged light rays are converted to analog signals by the BASIS After the anal...

Page 155: ...d by paper gaps when scanning a lifted or bent document 5 Imaging lens This lens is used for forming an image of the light rays converged by the field lens onto the BASIS 6 Shading board The shading b...

Page 156: ...nter and the periphery of the lenses the intensity of each scanned line is not uniform The scanned data is compared against a standard white data to even out and correct the density Carriage Scanning...

Page 157: ...23 24 25 26 28 29 Signal LAMP G V LAMP TOP S C CHA ID0 ID1 INKS 2 Vss COM 0 REN COM 1 RWR COM 2 RDT COM 3 N C Vdd S CLOCK DTCK S SYNE LNST S RES S DATA DT C CHK Type IN OUT OUT OUT OUT OUT GND IN IN...

Page 158: ...nternal temperature at the time is downloaded to the scanner controller The scanner application requests calibration when there is no compiled data within 5 C Part 4 Technical Reference BJC 50 4 50 TA...

Page 159: ...Tools 5 3 3 APPLYING THE GREASE 5 4 4 ADJUSTMENT 5 5 5 TROUBLESHOOTING 5 5 5 1 Overview of Troubleshooting 5 7 5 2 Error Condition Diagnosis 5 31 6 CONNECTOR POSITION PIN ALIGNMENT 5 31 6 1 Control B...

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Page 161: ...ntenance Level User Service engineer Periodically replaced parts None None Level User Service engineer Periodic Maintenance None None Level User Service engineer Consumables Black BJ cartridge BC 10 C...

Page 162: ...JC 50 5 2 General tool Phillips screwdriver Flathead screwdriver Multi Mater Tweezers Use For removing screws M2 6 For removing plastic parts For troubleshooting For fitting and removing flexible cabl...

Page 163: ...se 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 wiper or the cap when greasing the gui...

Page 164: ...4 ADJUSTMENT No parts need to be adjusted Part 5 Maintenance BJC 50 5 4...

Page 165: ...stalled take utmost care to prevent electric shock from the power supply unit and PCB shorting 3 Troubleshooting procedures are given in flowcharts The following symbols are used in the flowcharts 4 A...

Page 166: ...tep 2 and replace the print unit 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...

Page 167: ...END START When DC power is supplied Specify that the printer enters the factory mode at power on and write it into the EEPROM Correct No Yes RAM error ROM error Failed recharging circuit error If an e...

Page 168: ...Is the test print button pressed No Yes START When the power is turned on with the POWER button Correct No Yes POWER indicator blinks RAM check ROM check RAM error ROM error Thermistor error Next pag...

Page 169: ...No Yes When using battery If the input voltage is 10 0Vdc or lower low battery error If the input voltage is 10 5Vdc or lower low battery warning Check the battery voltage Set the print position conec...

Page 170: ...erature adjustment control starts Feed out the paper in the printer Detect internal temperature Correct No Yes Check condition for automatic recovery operation The POWER Indicator lights If it is 6 5V...

Page 171: ...control board Cause EEPROM reading and writing cannot be done properly Suspected parts EEPROM Measure Replace control board When a ROM or RAM error occurs the correct error may not be displayed When...

Page 172: ...ste ink absorbed in the EEPROM See Part 3 3 6 EEPROM Data Setting page 3 23 Part 5 Maintenance BJC 50 5 12 Correct Yes No Visually check the carriage drive unit operation Visually check the carriage m...

Page 173: ...otor Replace the control board Correct Replace the print unit Yes No The carriage motor or paper feed motor is defective Previous page Carriage Motor Disconnect the carriage motor connector from the c...

Page 174: ...oard Measure Cause The thermistor is faulty Suspected part Thermistor Measure Replace the control board Part 5 Maintenance BJC 50 5 14 Start recharging No Yes Replace with another battery Is an error...

Page 175: ...leave the printer for several minutes Check connectors Is any error displayed Yes No Do not touch the head because it can be too hot Remove and reinstall the BJ cartridge Switch the power on Correct...

Page 176: ...ribbon cable is defective Previous page 29 10 The black BJ cartridge and the color BJ cartridge have the same meter connections and meter readings 29 10 Meter connection Pin No Reading 10 29 Conducti...

Page 177: ...BJC 50 Part 5 Maintenance 9 No Head Error Remove the top cover and reinstall the BJ cartridge Is an error displayed 2 Replace the control board No Yes END 1 Replace the BJ cartridge Check the waste in...

Page 178: ...the lithium ion battery and the printer Measure Part 5 Maintenance BJC 50 5 18 11 Failed Recharging Circuit Error Remove and reinstall the battery Is an error displayed 1 Replace the control board No...

Page 179: ...he printer and printing paper specifications Do they meet the specifications Inspect the inside of the printer visually Paper jam Deformed chassis etc Missing gear teeth Does any paper delivery error...

Page 180: ...part Connection between the BJ cartridge and the carriage BJ cartridge Scanner cartridge Carriage ribbon cable Control board Measure Replace the BJ cartridge Replace the scanner cartridge Cause The li...

Page 181: ...nk absorber reaches 84000mg or higher a waste ink error occurs Replace the printer base unit Cause This warning appears when the voltage in the lithium ion battery is less than 10 5V Suspected part Li...

Page 182: ...of ink Measure Press the CARTRIDGE button to enter the replacement mode After the beeper sounds once the ERROR indicator will blink Determine which ink tank is low by the blinking cycles BCI 10 BCI 11...

Page 183: ...C plug side Yes No No Yes Unlock the switch Are the anbient and battery temperatures below 0 C or above 45 C Yes No 1 Replace the control board see Fig 5 7 Is the output between 11 5V and 13 0Vdc Can...

Page 184: ...e Flexible cables are defective The control board is defective Measure Part 5 Maintenance BJC 50 5 24 2 Control Panel Failure Check conductivity of the connection cable to the control board Is it unpl...

Page 185: ...J cartridge is defective The carriage is defective The control board is defective Measure 5 25 BJC 50 Part 5 Maintenance 3 BJ Cartridge is Not Recognazed Remove and reinstall the BJ cartridge Is it re...

Page 186: ...t No Yes Is the test result bad No Yes Remove and reinstall the BJ cartridge 1 Replace the print unit END Use printing paper that meet the specifications Check the conditions for using the printer and...

Page 187: ...ern print Hold down the POWER button until the beeper sounds once and manual feed a sheet of paper Press the RESUME button to print out the Demonstration pattern The purge drive unit is defective The...

Page 188: ...dhered to the spurs Spurs have deformed The BJ cartridge is installed incorrectly The problem re occurs when the user s BJ cartridge causing the problem is installed in a normally operating printer Ch...

Page 189: ...able Replace the control board Yes Normal No END 2 Replace the control board Correct settings Set the printer to dump mode Send data from the host computer and print it Is the test result good No The...

Page 190: ...nner cartridge is installed Check computer printer connection Measures Press the cartridge button move the carriage to the cartridge replacement position and reinstall the cartridge correctly Restart...

Page 191: ...DATA2 DATA3 DATA4 DATA5 DATA6 DATA7 DATA8 ACKNLG BUSY P E GND GND SELECT AUTO FEED XT 5 0V INIT ERROR 5 0V SELECT IN GND N C GND GND N C IN OUT IN IN OUT IN OUT IN OUT IN OUT IN OUT IN OUT IN OUT IN...

Page 192: ...cognition signal Head temperature sensor diode anode Scanner cartridge recognition signal BJ cartridge black color detection signal Scanner monochrome color detection signal BJ cartridge black color d...

Page 193: ...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 OUT IN OUT IN OUT Description IrDA unit type switch signal Infrared light transmitting rec...

Page 194: ...OUT OUT OUT Description Paper feed motor drive voltage 20 0 VDC Paper feed motor phase B Paper feed motor phase A Paper feed motor phase A Paper feed motor phase B Pin No 1 2 3 4 Signal name CR B CR B...

Page 195: ...scription Motor drive 24V power supply Microcomputer drive 5V power supply Serial data receiver Serial data transmitter Paper end sensor read signal Power on off drive control signal Pin No 1 2 3 4 5...

Page 196: ...6 27 28 29 Signal name VHG VHG MCH0 MCH1 HVH HVH WHT N C TOP DIA ID0 ID1 HCONT HVSS HENBD EVENENB HENBA HENBC ODDENB BENB0 BENB1 BENB2 HVDD HCLOCK HLATCH HRES HENBB HDATA DIK IN OUT OUT OUT IN OUT IN...

Page 197: ...B ENB1 B ENB0 EVEN HEAT B HEAT D ODD HEAT C HEAT A GND L IND Spare2 ID 1 ID 0 MC H1 SUB Spare1 RANK DIA MC H2 VH VH GND H GND H Figure 5 12 BC 11e Contact Pad S DATA DIK S SCLOCK SSYNC SRES VDD CMD3 C...

Page 198: ...7 CIRCUIT DIAGRAMS 7 1 Parts Layout 7 1 1 Control board Upper section Part 5 Maintenance BJC 50 5 38...

Page 199: ...7 1 2 Control board Lower section 5 39 BJC 50 Part 5 Maintenance...

Page 200: ...Part 5 Maintenance BJC 50 5 40 This page intentionally left blank...

Page 201: ...6 2K 1 16W ZD9 8 7 6 5 1 2 3 4 Cd Si V INV Cs Es Ct GND IC5 C14 330p 50V C13 Q2 Q10 3 2 1 3 1 2 R20 1K 1 16W R19 10K 1 16W VH ON 02 F1 05 F5 02 C1 03 F1 02 F1 05 F5 05 F1 R28 51 1 10 R79 47K 1 16W Q8...

Page 202: ...A14 A15 A16 A17 VSS A18 A19 A20 A21 VDD D15 D14 D13 D12 D11 D10 D9 D8 CS0 SC1 P61 ASIC IC6 T6W73 8 7 6 5 4 3 2 1 7 6 5 4 3 2 1 0 9 10 11 12 13 14 15 16 17 18 19 20 15 14 13 12 11 10 9 8 CE0 CE1 V3 ON...

Page 203: ...A6 A5 A4 A3 A2 A1 A16 BYTE VSS DO15 DO7 DO14 DO6 DO13 DO5 DO12 DO4 VCC DO11 DO3 DO10 DO2 DO9 DO1 DO8 DO0 OE VSS CE A0 FLASH ROM 4M IC9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42...

Page 204: ...BZOUT R80 10K 1 16W C58 0 01 50V 02 F4 02 F3 02 F5 02 F5 02 F5 02 F4 02 F4 02 F4 02 F4 02 F4 02 F4 02 F4 02 F4 02 F4 02 F4 02 F4 02 F3 03 G5 CNIR1 1 2 3 4 5 6 7 8 CNOP1 Vcc3 Vcc3 R68 390 1 8W R69 5 6K...

Page 205: ...I5 I6 I7 GND O1 O2 O3 O4 O5 O6 O7 COM Paper Feed Motor Driver IC15 C78 1 10V R107 0 68 1 2W D12 WHEAT TOPC ALFM ALFM LF PRT 1 2 3 4 8 7 6 5 tpout xout xin vss vdd sio sck cs TIMER IC IC13 X3 32 768KH...

Page 206: ...PRINTED IN JAPAN IMPRIME AU JAPON CANON INC The printing paper contains 70 waste paper...

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