Canon I550 I550 Service Manual

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Summary of Contents

Page 1 - Service Manual

i550 / i850 / i950 Service Manual Revision 0 QY8-1385-000 COPYRIGHT © 2002 CANON INC. CANON i550/i850/i950 0902 GR

Page 2

1 - 5 3. Repair Details 3.1 Precautions 3.1.1 Precautions regarding ink stains Be careful not to touch the ink path and stain the printer, work bench

Page 3 - Reference

1 - 6 3.1.5 Do not loosen or remove red screws Do not loosen or remove the red screws below because they cannot be adjusted in the field. (a) Head

Page 4 - II. Table of Contents

1 - 7 3.2 Adjustments 3.2.1 Waste ink counter setting (1) When replacing the logic board, replace the waste ink absorber, depending on the value of t

Page 5 - Maintenance

1 - 8 3.2.3 Applying grease (oil) After disassembly/assembly, apply special tool grease at the locations shown below. Apply a thin layer of greas

Page 6 - <Life>

1 - 9 3.3 Settings 3.3.1 Standalone printer operation This printer has an offline mode which allows the printer operation without connection to a com

Page 7

1 - 10 <i950 Service Mode> Count LED Function Remark 0 Green Power off When there is no head, the carriage returns to the home position an

Page 8

1 - 11 3.3.3 Test print sample (1) i550 Test print sample Figure 1-5 Service Test Print Sample (i550)

Page 9

1 - 12 (1) i850 Test print sample Figure 1-6 Service Test Print Sample (i850)

Page 10 - 3. Repair Details

1 - 13 (1) i950 Test print sample Figure 1-7 Service Test Print Sample (i950)

Page 11

1 - 14 3.3.4 Printing EEPROM information EEPROM print prints the content of the printer internal EEPROM and the EEPROM in the print head. The res

Page 12 - 3.2.2 Resetting EEPROM

This manual has been issued by Canon Inc. to provide the service technicians of this product with the information necessary for qualified persons to

Page 13 - Grease/Oil name Amount

1 - 15 3.4 Verification (1) Print the nozzle check pattern when replacing the print head, sheet feeder unit, purge unit, or carriage unit. (2) Ch

Page 14 - 3.3.2 Service mode functions

3DUWTechnical Reference

Page 15 - <i950 Service Mode>

2 - 1 1. New Technologies ASF features - Retard separation method - Stacking limit: 150 sheets (SK paper) - Stacking height: 13mm - Paper feed roller

Page 16 - 3.3.3 Test print sample

2 - 2 2. Cleaning Mode and Suction Amount Print head cleaning is performed effectively and efficiently depending on conditions in order to prevent pr

Page 17 - Test print sample

2 - 3 3. Print Mode List Table 2-3 Print Mode List (i550) Paper type Quality 5 Quality 4 Quality 3 Quality 2 Quality 1 Plain paper Passes Pig/Y

Page 18 - (1) i950

2 - 4 Table 2-4 Print Mode List (i850) Paper type Quality 5 Quality 4 Quality 3 Quality 2 Quality 1 Plain paper Passes Pig/YMC Resolution Print

Page 19 - <i950>

2 - 5 Table 2-5 Print Mode List (i950) Paper type Quality 5 Quality 4 Quality 3 Quality 2 Quality 1 Plain paper Post card Envelope Passes Number

Page 20 - 3.4 Verification

2-6 Table 2-6 PIXUS 550i/PIXUS 850i/PIXUS 950i Trouble Problems Model Cause Action Manual description Paper moves diagonally/feed error PIXUS55

Page 21 - Technical Reference

3DUWAppendix

Page 22 - 1. New Technologies

3 - 1 1. Block Diagram i550 Block Diagram i850 Block Diagram Serial I/F Power Button Resume Button Door Sensor AS

Page 23

I. Manual Outline This manual is divided into the following three parts to provide information necessary to service the i550, i850, and i950. Par

Page 24 - 3. Print Mode List

3 - 2 i950 Block Diagram ASIC MASKROM 16Mbit USB I/F Motor IC EEPROM 2Kbit LED ASF Motor PG Motor CR Motor LF

Page 25

3 - 3 2. Connector Locations and Pin Layout 2.1 i550 Connector Location and Pin Layout 2.1.1 Logic board Figure 3-1 Logic Board CN201 (Carriage rib

Page 26

3 - 4 CN301 (USB interface connector) Pin No. Signal Name Function 1 2 3 4 USB_VBI USB_DN USB_DP GND Cable power supply Differential data signal Di

Page 27 - Manual description

3 - 5 CN502 (Purge motor connector) Pin No. Signal Name Function 1 2 3 4 PGA PGB PGAN PGBN PG motor phase A PG motor phase B PG motor phase A PG mo

Page 28 - Appendix

3 - 6 2.1.2 Carriage board Figure 3-2 Carriage Board CN01 (Carriage ribbon cable connector) See Page 3-3 (CN201 Carriage ribbon cable connector) C

Page 29 - 1. Block Diagram

3 - 7 2.1.3 Print head Figure 3-3 Print Head Pin No. Signal Name Function 1 ,2 3 4 5, 14, 22 6, 7, 8 9 10 11 12 13 15 16 17 18 19 20 21 23 24

Page 30

3 - 8 2.2 i850 Connector Location and Pin Layout 2.2.1 Logic board Figure 3-4 Logic Board CN201 (Carriage ribbon cable connector) Pin No. Signal Na

Page 31 - Signal Name Function

3 - 9 CN402 (Ink sensor connector) Pin No. Signal Name Function 1 2 3 POW GND INKS Remaining ink sensor side power supply GND Remaining ink sensor

Page 32

3 - 10 CN508 (Purge sensor connector) Pin No. Signal Name Function 1 2 3 POW GND SNS_PG PG sensor illuminating side power supply GND PG sensor outp

Page 33

3 - 11 2.2.3 Print head Figure 3-6 Print Head Pin No. Signal Name Function 1, 2 3 4 5, 14, 22 6, 7, 8 9 10 11 12 13 15 16 17 18 19 20 21 23 24

Page 34

II. Table of Contents Page Part 1: Maintenance 1 - 1 1. Periodic Replacement/Periodic Inspection/Life 1 - 2 2. Troubleshooting List by Error/S

Page 35

3 - 12 2.3 i950 Connector Location and Pin Layout 2.3.1 Logic board Figure 3-7 Logic Board JCR1 (Carriage ribbon cable connector) Pin No. Signal N

Page 36

3 - 13 JCR3 (Carriage ribbon cable connector) Pin No. Signal Name Function 1 - 8 9 10 11 12 13 14 - 20 VH HEYX HELMX HEMX DATAM TSOLMN GND Y heat

Page 37

3 - 14 JLFENC1 (Paper feed motor/LF encoder connector) Pin No. Signal Name Function 1 2 3 4 5 6 LFA LFB GND LF_ENCA EVDD LF_ENCB LF motor phase A L

Page 38

3 - 15 2.3.3 Print head Figure 3-9 Print Head Pin No. Signal Name Function 1, 2, 8 - 13 19, 20 3 4 5 6 7 14 15 16 17 18 21 22 23 24 25, 36 26 27 2

Page 39 - 2.2.3 Print head

3 - 16 2.4 i550 / i850 Printer Specifications <Printer Specifications> Type Desktop serial color bubble jet printer Paper feeding method Auto

Page 40

3 - 17 i950 Printer Specifications <Printer Specifications>Type Desktop-type serial printer Paper feeding method Auto sheet feed Resolution

Page 41

3 - 18

Page 42

3DUWMaintenance

Page 43 - 2.3.3 Print head

1 - 1 1. Periodic Replacement/Periodic Inspection/Life <Periodic replacement> Level Periodic replacement User None Service personnel None &l

Page 44

1-22. Troubleshooting List by Error/Symptom Error codes are displayed on the monitor of the connected computer. Start the status monitor on the hos

Page 45

1-3Error messages are displayed on the monitor of the connected computer. Start the status monitor on the host computer in order to display the err

Page 46

1-4 Symptom Action Assembly/disassembly precautions Adjustment Does not power on Power goes off immediately after power on Replace AC adapter/logic

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