i550 / i850 / i950 Service Manual Revision 0 QY8-1385-000 COPYRIGHT © 2002 CANON INC. CANON i550/i850/i950 0902 GR
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
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
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
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
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
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
1 - 11 3.3.3 Test print sample (1) i550 Test print sample Figure 1-5 Service Test Print Sample (i550)
1 - 12 (1) i850 Test print sample Figure 1-6 Service Test Print Sample (i850)
1 - 13 (1) i950 Test print sample Figure 1-7 Service Test Print Sample (i950)
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
This manual has been issued by Canon Inc. to provide the service technicians of this product with the information necessary for qualified persons to
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
3DUWTechnical Reference
2 - 1 1. New Technologies ASF features - Retard separation method - Stacking limit: 150 sheets (SK paper) - Stacking height: 13mm - Paper feed roller
2 - 2 2. Cleaning Mode and Suction Amount Print head cleaning is performed effectively and efficiently depending on conditions in order to prevent pr
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
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
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
2-6 Table 2-6 PIXUS 550i/PIXUS 850i/PIXUS 950i Trouble Problems Model Cause Action Manual description Paper moves diagonally/feed error PIXUS55
3DUWAppendix
3 - 1 1. Block Diagram i550 Block Diagram i850 Block Diagram Serial I/F Power Button Resume Button Door Sensor AS
I. Manual Outline This manual is divided into the following three parts to provide information necessary to service the i550, i850, and i950. Par
3 - 2 i950 Block Diagram ASIC MASKROM 16Mbit USB I/F Motor IC EEPROM 2Kbit LED ASF Motor PG Motor CR Motor LF
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
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
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
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
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
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
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
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
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
II. Table of Contents Page Part 1: Maintenance 1 - 1 1. Periodic Replacement/Periodic Inspection/Life 1 - 2 2. Troubleshooting List by Error/S
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
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
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
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
3 - 16 2.4 i550 / i850 Printer Specifications <Printer Specifications> Type Desktop serial color bubble jet printer Paper feeding method Auto
3 - 17 i950 Printer Specifications <Printer Specifications>Type Desktop-type serial printer Paper feeding method Auto sheet feed Resolution
3 - 18
3DUWMaintenance
1 - 1 1. Periodic Replacement/Periodic Inspection/Life <Periodic replacement> Level Periodic replacement User None Service personnel None &l
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
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
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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