BJC-6000 COLOR BUBBLE JET PRINTER

Technical Information

Printing Method Print Speed Number of Nozzles Bubble Jet ink-on-demand Approx. 8 pages per minute in black Approx. 5 pages per minute in color BC-30 Black BJ Cartridge 160 nozzles for black BC-31 Color BJ Cartridge 48 x 3 nozzles for color (C, M, Y) BC-32 Photo BJ Cartridge (optional) 48 x 3 nozzles for color (BK, C, M) Print Resolution Compatibility Standard Interface Buffer/RAM Paper Sizes Paper Handling 1440 x 720 dpi in color* 1440 x 720 dpi in black* Windows 3.1, Windows 95, Windows 98, Windows NT 4.0 and Mac OS** Canon Extended Mode 128KB*** Letter; legal; A4; A5; #10 or European envelopes, banner paper Built-in sheet feeder/ @ paper weight Letter Legal Envelopes Transparencies Paper path Max. paper weight 48 dB(A) 300+ TrueType fonts on CD-ROM AC 120V, 60Hz

ENERGY STAR Compliant

Ordering Information

Description

Printer and Accessories BJC-6000 USB Kit Ink Cartridges BC-30 Black BJ Cartridge BCI-3BK Black BJ Tank BC-31 Color BJ Cartridge BCI-3C Cyan BJ Tank BCI-3M Magenta BJ Tank BCI-3Y Yellow BJ Tank BC-32 Photo BJ Cartridge BCI-3PC Photo Cyan BJ Tank BCI-3PM Photo Magenta BJ Tank BCI-3PBK Photo Black BJ Tank

Order #

Q30-2810-US1 Q70-4100-411 F45-1471-400 F47-2171-400 F45-1481-400 F47-2181-400 F47-2191-400 F47-2201-400 F45-1501-400 F47-2211-400 F47-2221-400 F47-2231-400

BJC-6000

Color Bubble Jet Printer
130 sheets 24 lb. 130 sheets 130 sheets sheets Straight 143 lb. (manual feed only)
Noise Level Fonts Power Source

Warranty Software

1-year limited warranty with SelectExchange warranty program
Canon Creative Pro CD-ROM featuring Adobe PhotoDeluxe Business Edition, Ofce In Color, Design Essentials and WebRecord
Specialty Papers Back Print Film (8.5" x 11"/5 sheets) F51-1951-500 Back Print Film (8.5" x 11"/20 sheets) F51-1871-500 Banner Paper (continuous/50 sheets) F51-2571-500 Brilliant White Paper (8.5" x 11"/500 sheets) CST-6160-000 Bubble Jet Paper (water resistant) (8.5" x 11"/200 sheets) F51-2121-500 Bubble Jet Paper (water resistant) (8.5" x 14"/200 sheets) F51-2191-500 Fabric Sheets (9.5" x 14"/10 sheets) F51-2311-500 Glossy Photo Cards (4" x 6"/20 sheets) F51-2701-400 Glossy Photo Paper (8.5" x 11"/20 sheets) F51-2501-400 Greeting Cards (1/4 fold) (8.5" x 11"/20 with 22 envelopes) CST-6043-000 Greeting Cards (1/2 fold) (8.5" x 11"/15 with 15 envelopes) CST-6205-000 High Gloss Photo Film (8.5" x 11"/10 sheets) F51-2461-400 High Resolution Paper (8.5" x 11"/100 sheets) F51-2111-400 Transparencies (8.5" x 11"/50 sheets) F51-9701-510

For More Information

Visit our Web Site at : www.ccsi.canon.com For a name of a dealer nearest you call: 1-800-OK-CANON Canon Computer Systems Inc. 2995 Redhill Avenue, Costa Mesa, California 92626 U.S.A. 1-714-438-3000 Canon Canada, Inc. 6390 Dixie Road, Mississauga, Ontario L5T 1P7 Canada 1-800-263-1121 Canon Latin America, Inc. 6505 Blue Lagoon Dr., Suite 325, Miami, Florida 33126 U.S.A. 1-305-260-7400
* On specialty paper. ** Mac OS compatibility requires optional Canon USB kit; compatibility only on Apple systems with USB port and 8.1 or later operating system. *** With download buffer disabled. SelectExchange warranty program is subject to certain restrictions and limitations. See warranty card for full details.
T H E S M A RT C H O I C E F O R A L L YO U R P R I N T I N G N E E D S
1999 Canon Computer Systems, Inc. Canon, BJ and BJC are registered trademarks. Bubble Jet, Canon Think Tank System, Drop Modulation Technology, PhotoRealism and See What We Mean are trademarks and SelectExchange is a service mark of Canon Inc. All other product and brand names are registered trademarks or trademarks of their respective owners. Specications subject to change without notice. All print speeds based on high-speed draft mode. Print speed will vary depending on system conguration, software, document complexity, print mode and page coverage. As an ENERGY STAR partner, Canon U.S.A., Inc. has determined that this product meets the ENERGY STAR guidelines for energy efciency. CCSI-C291-0399 40-41366-0299-20M
A Truly Remarkable Printer At An Amazing Price
The BJC-6000 is the smart choice for all your printing needs, whether for a busy workplace or a home ofce. It establishes a new benchmark in affordable, professional-quality printing by adding intelligent functions that help you work smarter. From fast, high resolution black and color printing to amazing photo output using optional Canon Photo Inks. Plus, an intelligent ink system featuring individual ink tanks that eliminates ink waste and saves you money.

The Canon Think Tank System is an intelligent ink-management system unique to the BJC-6000 Color Bubble Jet printer. It features individual ink tanks for each color ink, so you replace only the color you need as it runs out.
The BJC-6000 features an expanded print nozzle system that prints an area up to twice as large in just a single passresulting in blazing print speeds. Fast approx. 8 ppm black Quick approx. 5 ppm color

Quality

The BJC-6000 is the next generation of state-of-the-art Canon printers. It incorporates such exclusive output advancements as Drop Modulation Technology and a new image processing system for outstanding color rendering and richness. Rich, laser-quality black printing 1440 x 720 dpi printing, color and black Canon Creative Pro software gives you everything you need from professionally designed, customizable templates to built-in graphics librariesto create and print remarkable business and marketing materials in minutes. Featuring AdobePhotoDeluxe Business Edition, Design Essentials, and WebRecord. Ofce In Color
Eliminate ink waste and save money
Wasting ink by having to replace all the colors in a cartridge just because one color is spent is a thing
The Canon Think Tank System
The BJC-6000s hallmark is an intelligent ink-management system that reduces waste and saves money. Large individual ink tanks save you money Ink sensor indicates when ink is running low
of the past. The BJC-6000 uses individual ink tanks for each color. When one runs out, simply replace that colornot the entire cartridge. No more ink wastejust big money savings.
Never run out of ink at the wrong time again
Ever run out of ink right in the middle of an important print job? Never again. The BJC-6000s built-in optical low-ink sensor actually warns you with an on-screen message when a specic ink tank is low. So you can replace the empty ink tank just at the right time.
* USB and Mac OS compatibility requires optional Canon USB kit. Network compatibility optional. Recommended network print server is AXIS PrintPoint 140 BJC.
Professional newsletters, brochures, yers Stationery, certicates, business cards Personalized greeting cards, invitations, T-shirts Web buttons, banners, backgrounds

Other Features

USB, Mac OS and network compatible* Exclusive Canon Creative Pro software
Internet access software, printing, updates Access thousands of images online

Part 4: TECHNICAL REFERENCE
4- 1 4- 1 4- 2 4- 3 4- 4 4- 4 4- 6 4- --------------------17 1. OVERVIEW 1.1 Printer Block Diagram 1.2 Power On Sequence Flowchart 1.3 Flow of Print Signals 1.4 Print Driving 1.4.1 Print drive control 1.4.2 Print drive method 1.5 Power-Off Sequence Flowchart 2. FIRMWARE 2.1 Interface 2.1.1 Compatible mode 2.1.2 Nibble mode 2.1.3 ECP mode 2.2 Print Control 2.2.1 Print mode 2.2.2 Multi-drop print 2.2.3 Photo-print 2.2.4 Automatic switching control of printing nozzles 2.3 Automatic Printing Position Alignment Function 2.4 Pause Between Scanning 2.5 Pause Between Pages 2.6 Smear Control 2.7 Auto Power ON/OFF 2.8 Head Overheat Protection 3. PRINTER'S MECHANICAL SYSTEM 3.1 Overview 3.1.1 BJ cartridge unit 3.1.2 Carriage unit
Page 4 ------------------------------------44
3.1.3 Purge unit 3.1.4 Paper feed unit 3.2 BJ Cartridge 3.2.1 Construction of the Black BJ cartridge 3.2.2 Construction of the Color/Photo BJ cartridge 3.2.3 Construction of the bubble jet head unit 3.3 Purge Unit 3.3.1 Function of the purge unit 3.3.2 Construction of the purge unit 3.4 Paper Feed Unit 3.4.1 Functions of the paper feed unit 3.4.2 Construction of the paper feed unit 3.5 Carriage Unit 3.5.1 Functions of carriage unit 3.5.2 Construction of the carriage unit 4 PRINTER'S ELECTRICAL SYSTEM 4.1 Overview 4.2 Control Unit 4.2.1 Control unit block diagram 4.2.2 Logic Components 4.3 Power Supply Unit 4.3.1 Power Supply Unit Block Diagram 4.3.2 Construction of Power Supply Unit 5. DETECTION FUNCTIONS 5.1 Detection with Sensors 5.1.1 Home position sensor 5.1.2 Paper end sensor 5.1.3 Print position sensor 5.1.4 Ink sensor 5.1.5 Cover sensor 5.1.6 Pump sensor 5.1.7 Printer temperature sensor (TH201) 5.1.8 Head temperature sensor 5.2 Other Detection Functions 5.2.1 Waste ink amount detection 5.2.2 BJ cartridge detection

Part 5: MAINTENANCE

8 1. MAINTENANCE 1.1 Parts for Periodic Replacement 1.2 List of Consumables 1.3 List of Periodic Maintenance 2. SERVICE TOOLS 2.1 List of Tools 3. APPLYING GREASE 4. DISASSEMBLY AND REASSEMBLY 4.1 Disassembly and Reassembly 4.2 Notes on Disassembly and Reassembly 4.2.1 Unlocking the carriage 4.2.2 Removing the printer unit 4.2.3 Removing the ASF unit 4.2.4 Removing the adjustable bearings supporting the carriage shaft 4.2.5 Paper feed gears 5. ADJUSTMENTS AND SETTINGS 5.1 Adjustments and Settings
5- 8 5- 8 5- 8 5- 8 5- 9 5- 9 5- -------------------------49
5.1.1 EEPROM setting 5.1.2 Carriage belt tension adjustment 5.1.3 ASF gear position adjustment 5.1.4 Head gap adjustment 5.2 Adjustment/Setting Procedures 5.2.1 EEPROM setting 5.2.2 Carriage belt tension adjustment 5.2.3 ASF gear position adjustment 5.2.4 Head gap adjustment 6. TROUBLESHOOTING 6.1 Troubleshooting Overview 6.1.1 Overview 6.1.2 Notes on troubleshooting 6.2 Diagnosis 6.2.1 Initial flowchart 6.2.2 Action 7. CONNECTOR POSITIONS AND PIN ASS 7.1 Control Board 7.2 Carriage Board 7.3 BJ Cartridge 7.4 AC adapter 7.5 DC power supply cable 7.6 Carriage Motor 7.7 Paper Feed Motor 7.8 Ink Sensor 7.9 Print Position Sensor 7.10Pump Sensor 8. CIRCUIT DIAGRAMS 8.1 Parts Layout 8.1.1 Control board 8.1.2 Carriage board 8.2 Circuit Diagrams

5- 3 5- 4 5- 5 5- 6 5- 6 5- 7 5- ---------------48 Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure 5- 1 5- 2 5- 3 5- 4 5- 5 5- 6 5- 7 5- 8 5- 9 5- 10 5- 11 5- 12 5- 13 5- 14 5- 15 5- 16 5- 17 5- 18 5- 19 5- 20 5- 21 5- 22 Grease Points Unlocking the Carriage Removing the Printer Unit Removing the ASF Unit Adjustable Bearings Supporting the Carriage Shaft Feed Gear Unit Precautions Carriage Belt Tension Adjustment ASF Gear Position Adjustment Head Gap Adjustment (1) Head Gap Adjustment (2) Control Board Carriage Board BJ Cartridge AC adapter DC Power Supply Cable Carriage Motor Paper Feed Motor Ink Sensor Print Position Sensor Pump Sensor Control Board Carriage Board

IV. TABLE INDEX

Page 3 -12
Table 3- 1 Error Indications
4 --23 Table Table 4- 1 4- 2 Print Mode List Signal Contacts

Part 1

SAFETY AND PRECAUTIONS
Page 1- 1 1- 1 1- 2 1- 4 1- 5 1- 5 1- 7 1- -----14
1. SAFETY PRECAUTIONS 1.1 Moving Parts 1.2 Ink Stains 1.3 Live Electrical Parts 2. MACHINE PRECAUTIONS 2.1 BJ Cartridges 2.2 Ink Tanks 2.3 Printer Handling 3. NOTES ON SERVICING 3.1 EEPROM Data 3.2 Static Electricity 3.3 Disassembly and Reassembly 3.4 Self Diagnosis

BJC-6000

1. SAFETY PRECAUTIONS

1.1 Moving Parts

Be careful not to get your fingers, hair, clothing, or accessories caught in the moving parts of the printer. The moving parts are driven either by the carriage motor or paper feed motor. The carriage motor-related moving parts include the carriage, carriage belt, and carriage ribbon-cable. The paper feed motor-related moving parts include the paper feed gears, paper feed rollers, pinch rollers, eject roller gears, spurs, and pick-up rollers. To prevent injuries, the printer will stop after moving the carriage to the cartridge replacement position if the cover is opened.

Pick-up Roller

Carriage Ribbon Cable Pressure Roller Idler Pulley Paper Feed Gear Eject Roller Gear Paper Feed Roller Carriage Belt Carriage Motor

Special custom menu

Figure 3-14 Printer Driver Utility (Sample) 3-15

3.5 Off-line Operations

This printer has three operations which can be performed independent of the computer: To select these operations, while holding down the RESUME button, power on the printer by pressing the POWER button, confirm the specified number of beeps, and then release the RESUME button. Operations Cleaning Nozzle check pattern printing Roller cleaning Number of beeps Remarks 1 time 2 times Printer prints one sheet and powers down. 3 times One cleaning sheet is fed and ejected to clean the rollers.

3.5.1 Cleaning

With the printer powered on, hold down the RESUME button and after confirming one beep, release the RESUME button. The cleaning operation will start, cleaning both (right and left) print heads. If you want to clean only one print head, connect the printer to the computer, and perform the print-head cleaning from the computer using the printer driver utility.
3.5.2 Nozzle check pattern printing
With the printer powered on, hold down the RESUME button and after confirming two beeps, release the RESUME button. The nozzle check pattern printing will start, feeding a sheet, which must be of B5 size or larger, from either the auto sheet feeder or the manual feed slot, and print a standard pattern using all nozzles of both installed BJ cartridges. If print defects are detected in the test print, perform printhead cleaning. If five or more cleaning operations fail to solve the problem, replace the BJ cartridge with a new one.
Use paper of B5 size or larger for the nozzle check pattern printing. If you use smaller paper, the platen may be smeared with ink.
To abort the nozzle check pattern printing, press the POWER button. The printer will switch itself off after ejecting the paper.

Black BJ Cartridge

Color BJ Cartridge

Large dot printing

Printed with the first nozzle Printed with the first nozzle Yellow Cyan 48 nozzles 48 nozzles
Black 160 nozzles Printed with the 48th nozzle Printed with the 160th nozzle

Magenta 48 nozzles

Small-dot printing
Printed with the first nozzle
Printed with the 160th nozzle
Printed with the 48th nozzle

360-dpi vertical

180-dpi horizontal forward
180-dpi horizontal reverse
360-dpi horizontal forward
360-dpi horizontal reverse
720-dpi horizontal forward
720-dpi horizontal reverse

180-dpi bi-directional

360-dpi bi-directional
Figure 3-15 Nozzle Check Pattern Print (Sample for Black/Color Cartridge) 3.5.3 Roller cleaning

3.6.2 Service/factory test print
The service/factory test print displays, in the header portion, such information as the control ROM version, model setting, total sheets passed, and total waste ink absorbed.
Currently installed left and right cartridges Model ROM version
Total number of pages passed when using Photo/Color cartridge Total number of pages passed when using Black/Color cartridge
ROM Ver Vx.xx BJF600 Use Head <BC-xx,BC-xx> HeadTemp0=xxx.x HeadTemp1=xxx.x EnvironmentTemp=xxx.x Bk=xxxxxxxxxx Cl=xxxxxxxxxx Ph=xxxxxxxxxx Factory Area=xx xx xx xx xx xx xx xx LostInkCount =xx.x% Destination =xx
Total waste ink amount (absorption ratio of the waste ink absorber : % )
Figure 3-16 Service/Factory Test Print
3.6.3 EEPROM information print
The EEPROM stores such information as function settings, total sheets passed with the Black/Color or Photo/Color cartridges, total waste ink absorbed, and records the last three errors recoverable only by service personnel. The information stored in the EEPROM is printed out as a hexadecimal dump in the EEPROM information print. The EEPROM information is useful especially for knowing how heavily the printer has been used.
- EEPROM Information <Hex.> Address +0 +1 +2 +3 +00 0A 2A 6C B7 AB 0A 1D 3C 000000A0 0C 000000B000000C000000DAB 98 000000E000000FD6 67
+6A BC 0C 0C 04 0B 1A 36 7C

+6 BE00 0C 0C 00 BB 73

+A44 1B 08 2E FF

+0C FD 01

+9 0C 54 DD 00 1A FF

+A 9F AA 00 0C D30 FF

+B 40 A0 0C 00 2F 0C C6 6B 30 FF
+C 09 1E 00 0A 83 0C FF FF

+D 0A 34 FF FF

+E 1C DA 00 0C FF FF
+F 28 3C 44 B0C 61 E3 F0 FF
Last error record Second error record Third error record from the last from the last
Error records are printed, in error code, for the last three errors which are recoverable only by service personnel except for ROM/RAM errors in the order that the latest error first and the oldest error last.

PeriphClk Host Ack

Data (1~8) PeriphAck ReverseRequest AckReverse

Byte0 Data

Byte1 Cmd

Reverse transfer phase

Figure 4-11 Interface Timing (ECP mode, reverse transfer)
2.2 Print Control 2.2.1 Print mode
The printer adjusts the carriage action and paper feed action according to the installed cartridges, selected print media, printing quality, print data, etc. to ensure high quality printing free from diffusion and density variations. Multiple passes are used to provide staggered print timing with multiple nozzles used to print one luster, so that the quantities of discharge that vary from nozzle to nozzle will be smoothed out to minimize density variations. It is smear-free because it is not until the ink for the last pass printed is fused on the paper that the next pass is printed. Printing can be divided up to a maximum 8 passes, depending on the print media.

2.2.2 Multi-drop print

The BJ cartridges used in this printer incorporate drop-modulation technology, allowing two ink drop sizes, large and small, to be ejected. This allows small dots to be selectively used for printing in low-density areas to lessen granularity, while large dots can be used in high-density areas to offer high speed printing. In the 720 dpi and 1440 dpi print modes, only small dots are used continuously to provide highly detailed printing.

2.2.3 Photo-print

The photo-print uses both the Photo BJ cartridge, which uses low density ink, and the Color BJ cartridge to provide printing with up to 6 colors of ink. By printing in lowdensity image areas with ink of 1/3 normal ink density (photo-cyan and photo magenta), printing with rich gradation and suppressed graininess is possible. In the photo-print mode, each pixel is converted into a maximum of 4 values (expressed by two bits), so that for each 360 dpi pixel, up to 4 gradations of each color can be printed in a combination of large and small dots. The 6 ink colors of the Photo BJ cartridge and Color BJ cartridge allow a more dynamic range of printing colors, thus providing higher printing density using less ink than would have been possible with 4 low-density ink colors.

Signal Circuit Print Circuit Board Ultra-thin Wire Connection Wire Connection Protective Bond Silicon Plate Aluminum Plate Heater Plate Bubble Jet Nozzle (1) Heater Driving Begins (2) Heater Is Driven (3) Heater Driving Stops (4) Bubbles Contract to form an Ink Drop Ink Filter Joint Pipe Plastic Cover Common Ink Chamber (5) Ink Drop Is Ejected Face Plate (part of plastic cover) Ink Channel Connected to Ink Sponge
Figure 4-16 Bubble Jet Nozzle (part)
b) Nozzle arrangement The bubble jet nozzles are lined up vertically at 1/360 inch pitch in one column. Color and Photo BJ cartridge have 8 dummy nozzles separating the nozzles of each color.

Photo BJ Cartridge

160th nozzle
160th nozzle 48 nozzles 48 photo-black nozzles 8 dummy nozzles 48 photo-cyan nozzles 8 dummy nozzles

48 photo-magenta nozzles

48 cyan nozzles 8 dummy nozzles

48 magenta nozzles

8 dummy nozzles 1st nozzle 1st nozzle 48 yellow nozzles

1st nozzle

Figure 4-17 Nozzle Arrangement
c) Signal contacts The bubble jet head signal contacts, in touch with the carriage contacts, transmit control signals such as print signals to the bubble jet nozzles.
Figure 4-18 Signal Contacts 4-22
TABLE 4-2 SIGNAL CONTACTS
Signal IN/OUT HVH OUT SUBH0 OUT (SUBH1) VHG. 5 ,7, 8, 10 HDATA0 IN/OUT 9 (HDATA1) HSEL1B0 OUT 11 (HSEL1B1) HVDD OUT 12 HCLOCK0 IN/OUT 13 (HCLOCK1) LGND OUT 14, 16 HSEL1A0 OUT 15 (HSEL1A1) HSEL2A0 OUT 17 (HSEL2A1) OUT HSEL2B(HSEL2B1) OUT HLAH 19 OUT ODD 20 EVEN OUT 21 BENB0 OUT 22 BENB1 OUT 23 HENB0 OUT 24 (HENB4) HENB1 OUT 25 (HENB5) HENB2 OUT 26 (HENB4) HENB(HENB5) DIR OUT 28 HRSTX OUT 29 DIA0 IN 30 (DIA1) DIK0 IN 31 (DIK1).. 32 Pin No 1, 2, 3 4, 6 Function Head drive voltage (VH) Sub-heater drive signal
GND for Head drive voltage (VHGND) Serial data (including head identification and rank resistance) sent in synchronization with the clock signal (H_CLK) Rear nozzle heater select signal for upper nozzles (1-8, 1724,., 145-152) Head logic drive voltage (+5 V) Clock signal for serial data transmission GND for head logic drive voltage (HVDD) Front nozzle heater select signal for upper nozzles (1-8, 1724,., 145-152) Front nozzle heater select signal for lower nozzles (9-16, 25-32,., 153-160) Rear nozzle heater select signal for lower nozzles (9-16, 2532,., 153-160) Serial data latch timing signal Odd-number nozzles select signal Even-number nozzles select signal Signal to generate heater enable decoder outputs Signal to generate heater enable decoder outputs Rear heater drive signal for nozzles 1-112 (or 1-144) Front heater drive signal for nozzles 1-112 (or 1-144) Rear heater drive signal for nozzles 1-112 (or 1-144) Front heater drive signal for nozzles 1-112 (or 1-144) Rear heater drive signal for nozzles 113-160 Front heater drive signal for nozzles 113-160 Serial data input/output direction control signal Reset signal Head temperature (diode) sensor's anode line Head temperature (diode) sensor's cathode line Not used

c) BJ cartridge maintenance By controlling the carriage position, wiping and cleaning operations will be performed on the BJ cartridge. During capping, as the carriage travels left to right, the notch on the carriage causes the purge section wiper flag to move, raising the wiper and capping the cartridge. When the carriage travels right to left, the cartridge is wiped clean, after which the hook unit on the carriage unlocks the wiper latch, lowering wiper.
Wiper Flag Hook Notch Wiper Latch
Figure 4-27 BJ Cartridge Maintenance
d) Paper feed motor drive switching unit Depending on the carriage position, the drive switching unit switches the paper feed motor's drive power over to drive the purge unit or the auto-sheet feeder. The slide arm that travels in sync with the carriage action controls the operation of the selector flag.
Slide Arm Flag Clamp Selector Flag
Drive Input Gear ASF Drive Gear

Purge Drive Gear

Figure 4-28 Drive Switching Unit
When the purge unit is driven, the flag clamp on the slide arm secures the selector flag. Turning the paper feed roller in the direction of paper feed transmits the driving power to the purge unit's drive gear without causing the ASF drive gear to turn. When the auto-sheet feeder is driven, the paper feed unit will be turned in the opposite direction of paper feed once to allow the flag to move toward the slide arm as the selector arm moves to the position where it supports the selector flag. With the selector flag supported, turning the paper feed unit in the direction of paper feed causes the ASF drive gear to start turning, and with it, pick-up operations commence. When the slide arm moves out of the position where it supports the flag, the ASF drive gear automatically stops turning when the pick-up action is complete.

Slide Arm

Selector Flag (when ASF is driven)
Selector Flag (when purge is driven)
Figure 4-29 Operation of the Drive Switching Unit 4-35
4 PRINTER'S ELECTRICAL SYSTEM

4.1 Overview

The electronics of this printer can be functionally divided into the control unit and the power supply unit. The control section converts the input data from the host computer into print signals or printer control signals, and drives the BJ cartridges and motors while monitoring all the sensors. The power supply unit converts the AC power into DC power, and has the control board convert this DC power into each specific voltage supplied to drive motors, ICs, BJ cartridges, etc.

4.3 Power Supply Unit 4.3.1 Power Supply Unit Block Diagram
Carriage Motor (VM) Paper Feed Motor (VM) BJ Cartridge (HVH)

AC100V

HVCONT(+24VDC output control signal)

+5V DC

Control ROM DC/DC Converter DRAM Printer Controller
+5V DC +5V DC(RGM5/RGV5I) Print Position Sensor (VSEN) Home Position Sensor (VSEN) Ink Sensor (VSEN) BJ Cartridge (HVDD) Parallel Interface (VIF)

+3V RGV3/inRGV3)

Figure 4-34 Power Supply Unit Block Diagram 4.3.2 Construction of Power Supply Unit
The power supply unit converts AC power line voltage into DC voltages that drive motors, ICs, BJ cartridges, etc. a) AC adapter Converts the AC line voltage into 2 groups of DC voltages, +24 VDC, and +5 VDC. The output of +24 VDC is controlled by the output signal (HVCONT) from the printer controller. The +24 VDC is used to drive the head, and carriage motor/paper feed motor as HVH, and VM, respectively. Note that there is no output of HVH if the head is at the replacement position or at home position. The +5 VDC is always output by the adapter. Except for sensors, driver ICs, and BJ cartridges, all hardware components are active while AC power is supplied. b) DC/DC converter Located on the control board to convert +5V to RGV5/RGV5I(+5 VDC) and RGV3/inRGV3(+3.3 VDC) and output them. RGV5/RGV5I is used as the drive power for EEPROM and reset, and power voltages for HVDD, VIF, and VSEN. Note that the output of power voltages of HVDD, VIF, and VSEN are controlled by printer controller. RGV3/inRGV3 is used as power for the printer controller, MPU, DRAM, and control ROM, and as pull-up for switches. The +3.3VDC is intended to reduce power consumption when the printer is switched off as compared with +5 VDC.

EEPROM

5. DETECTION FUNCTIONS
5.1 Detection with Sensors
This printer has the following sensors detect the printer's status.
Cover Sensor Paper End Sensor
Print Position Sensor Home Position Sensor Ink Sensor
Figure 4-35 Sensor Positions 5.1.1 Home position sensor
This photointerruptor-type sensor detects the chassis' home position edge and capping position edge to find the carriage's position. When the carriage finds the capping position edge, the printer confirms capping and locks the carriage. The carriage uses the position detected by the home position edge as the reference to determine its home position.

5.1.2 Paper end sensor

This photointerruptor-type sensor uses its flag to check for the end of the paper passed through the paper feed unit to determine if there is paper. If there is no paper, the paper sensor arm closes the sensor; if there is paper, it opens indicating that there is paper.

5.1.3 Print position sensor
Consists of a red LED and photosensor, and sees the reflection density of the printing patterns, each printed slightly displaced from one another vertically and horizontally for each printing mode. The voltage varying with the reflection density is fed into the MPU as an analog input which is converted into a digital value by the built-in A/D converter. Based on the calculated compensation value, the printer performs optimum printing position correction for both heads and for bi-directional printing. Be careful not to open the front cover during measurement, as external light may make accurate measurement impossible. For more on automatic printing position compensation, refer to Part 4: 2.3 Automatic Printing Position Alignment Function (page 4-15).

5.1.4 Ink sensor

Consists of an LED and photosensor to optically check for ink in the ink chamber part of the ink tank. At the ink chamber bottom is a protrusion that acts as a prism. If ink is present in the chamber, the refraction rates of ink and the prism resin are nearly equal, producing less reflection. If there little ink left, the difference in refraction rate between the ink and the resin increases so that more incident light to the sensor will be reflected, thus increasing the intensity of reflected light. The printer decides whether there is any ink in the ink chamber or not based on the difference in the amount of reflection. The MPU, then, detects the voltage varying with reflection, and the the A/D converter converts this analog voltage to a digital value. When the printer decides that there is no ink left in the ink chamber, it generates a message on the status monitor telling that ink is running low in the relevant ink chamber. After the printer has decided that no ink is left, it starts counting the number of dots equivalent to the amount of ink absorbed in the sponge (20% of the ink) to detect "ink-out." This detection takes place when the power is on, the front cover is closed, after pumping operations are completed, or after a specified number of dots have been printed. Do not open the front cover while measurement is going on, as external light can make accurate measurement impossible. Note that ink tank presence cannot be detected. If no ink tank is installed, the printer will determine that ink is present.

6.2.2 Action

a) Error indications

1. ROM Error

<Cause> ROM cannot be read during initialization. <Suspected parts> Control ROM <Measure> Replace the ROM or control board. <Cause> RAM cannot be read or written. <Suspected parts> DRAM, print controller <Measure> Replace the control board. <Cause> EEPROM cannot be written. <Suspected parts> EEPROM, print controller <Measure> Replace the control board.

2. RAM Error

3. EEPROM Error
Error indications may fail if the ROM or RAM error occurs.

4. Home Position Error

<Measure>
<Cause> The home position sensor fails to detect the home

position.

<Suspected parts> Home position sensor, carriage motor,
paper feed motor, control board, carriage ribbon cable, and carriage board

Visual check

No Repair or replace faulty part
Open the cover and switch on
Check the carriage for smooth motion
Visually check the carriage's motion.
No Check the carriage motor
Measurement points Normal value CN402 1-3 Approx.3 Pin No. 2-4 Disconnect the carriage motor cable from the control board before checking. No Replace the carriage motor
To page 5-21 (1) To next page
Visually check operation of paper feed unit
No Check the paper feed motor
Measurement points Normal value 1-3 CN403 2-4 Approx.3 Pin Disconnect the paper feed motor cable from the control board before checking. OK? Yes To page 5-21 (1) Visually check that carriage is unlocked Visually check that carriage is unlocked. No
Replace the paper feed motor

Unlocked?

No 1. Replace the ASF drive gear unit 2. Replace the purge unit
1. Replace the carriage board 2. Replace the carriage ribbon cable

HVCONT check

HVCONT (+24 VDC output control signal) for output (CN401).
+5VDC HVCONT GND +24VDC GND

RGV105

Beeper

BZ601 CO11PA-Z BZ 8

RGV3 CP320 MA<9.0> MD<15.0> 16

DRAM(16Mbit) IC302

F8302 8K1608H5121 UPD42518165-A60-7JF VCC I/O 1 I/O 2 I/O 3 I/O 4 Vss I/O 5 I/O 6 I/O I/O 8 NC GND I/O 16 I/O 15 I/O 14 I/O 13 GND I/O 12 I/O 11 I/O 10 I/O 9 NC 40

F8301 8K1608H5121

NC NC WE/ RAS/ NC NC A0 A1 A2 A3 Vcc
NC LCAS/ UCAS/ DE/ A9 A8 A7 A6 A5 A4 GND
C318 1000p,50V C319 0.1m,25V RGV5
3.3V VDD 5V VDD A9 A8 A7 A6 A5 A4 A3 A2 A1 PB3 PB2 PB1 PB0 CPU WRMX CPU WRLX CPU RDX CPU CSX2 CPU CSX1 WAITX RSTX U OCX0 U OCX1 CPU CSX3 3.3V VDD VSS SELIN FAULT INIT AFXT SLCT PE BUSY ACX STB IF D7 IF D6 IF D5 IF D4 IF D3 IF D2 IF D1 5V VDD IF D0 VSS D0 D1 D2 D3 5V VDD 3.3V VDD
VSS VSS SV VDD DEX SHC PF1/SIN ST7/SOT RAM-A5 RAM-A6 RAM-A7 RAM-A8 RAM-A9 WEX UCASX1 LCASX0 RASX1 RASX0 RAM-D15 RAM-D14 RAM-D13 RAM-D12 RAM-D11 RAM-D10 RAM-D9 RAM-D8 VSS 3.3V VDD RAM-D7 RAM-D6 RAM-D5 RAM-D4 RAM-D3 RAM-D2 RAM-D1 RAM-D0 SCK NTEST2 A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 SV VDD VSS VSS

Printer Controller IC301

UPD82634GD-001-ML

Buttons

VSS VSS SV VDD HSEL1A1 HSEL1B1 HSEL2A1 HSEL2B1 BZ ST6 ST5 ST4 ST3 TST1 X0 X1 VSS ITEST ST2 ST1 ST0 PA3 PA2 PA1 PA0 PC3 VSS 3.3V VDD DSYS CLK PC2 PC1 PC0 ANC IINT 3 IINT 2 IINT 1 IINT 0 D15 D14 D13 D12 D11 VSS D10 D9 D8 D7 D6 D5 D4 5V VDD VSS VSS
C311 1000p,50V STATUS<7.0> inRGV3

R302 0.1A

R301 1M,1/16W X301 OUT OUT GND CSTX2500MV01
ST0 ST1 ST2 ST3 ST4 ST5 ST6 ST7
CP301 CP302 CP303 CP304 CP305 CP306 CP307 CP308

10p,50V

PA<3.0>

LEDPA0 R609

POWER(GREEN)
180.1/10W 1 PC<3.0>

PA1 SEC2494C

R610 180.1/10W

RESUME(ORANGE)

VSEN1 INT<3.0>

<01-A4>

R605 39K,1/16W R606 390,1/16W
R617 10K,1/16W C605 100p,50V PS601 GP15059C

2 RGV3 C309 1000p 50V

103 104

RGV3 RGV51

<01-B8>
D<15.0> IFD<7.0>
<01-B2> <04-F4>

R442 0.1A
1 <02-F5> LFCNT<2.0> 2 R414 1,1,1/4W,G, 3216 C407 100m,35V R426 1,1,/4W,G, 3216 CN4 LFA LFB LFA LFB + C408 0.1m,25V

ZD402 RD3,0581

ZD403 RD3,0581

C402 680p,50V

C403 680p,50V

IF PW C

FB602 BK1608HS601 R601 47K,1/16W

FA1A4P VIF <04-C2>

R441 0.1A

C405 0.033m,50V

R412 1,1,1/4W,G, 3216

C421 0.01m,50V

MRESTX <02-F5>
R425 1,1,/4W,G, 3216 C420 0.01m,50V RGV51
SNS PW C1 R602 47K,1/16W FA1A4P VSEN1

C406 100m,35V

C422 100p,50V

C423 100p,50V

C424 100p,50V

C425 100p,50V

CARRIAGE BOARD 05

HVH C1 220m,35V

HVH HVH HVH SUBH0 LGND SUBH0 LGND LGND HDATA0 HGND HSEL1B0 HVDD HCLOCK0 LGND HSEL1A0 LGND HSEL2A0 HSEL2B0 HLAT ODD EVEN BENB0 BENB1 HENB0 HENB1 HENB2 HENB3 DIR HRSTX DIA0 DIK0 RANK0 N.C. N.C

C2 220m,35V

C4 0.1m,50V
HCLOCK0 LGND HDATA0 LGND HSEL1A0 HSEL1B0 HSEL2A0 HSEL2B0 LGND HLAT ODD EVEN BENB0 BENB1 HENB0 HENB1 HENB2 HENB3 DIR HRSTX SNSG DIA0 DIK0 HPA HPC REGA REGC RANK0

C3 0.1m,50V

HPSEN OP1SOO5C 1 3

REGA SNSG REGC LGND

C5 0.1m,50V 31 HVH HVH HVH SUBH1 HGND SUBH1 HGND HGND HDATA1 HGND HSEL1B1 HVDD HCLOCK1 LGND HSEL1A1 LGND HSEL2A1 HSEL2B1 HLAT ODD EVEN BENB0 BENB1 HENB4 HENB5 HENB4 HENB5 DIR HRSTX DIA1 DIK1
HCLOCK1 LGND HDATA1 LGND HSEL1A1 HSEL1B1 HSEL2A1 HSEL2B1 LGND HENB4 HENB5 HENB4 HENB5 SNSG DIA1 DIK1 N.C. RNAK1

32 RANKN.C. 34 N.C.

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