Canon I550 Manuel utilisateur

i550 / i850 / i950

Service Manual

Revision 0

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QY8-1385-000

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This manual has been issued by Canon Inc. to provide the service technicians of this product with the

information necessary for qualified persons to learn technical theory, maintenance, and repair of products.

This manual covers information applicable in all localities where this product is sold. For this reason, this

manual may contain information that is not applicable to your locality.

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This manual could include technical inaccuracies or typographical errors due to improvements or changes

made to this product. When changes are made to the contents of this manual, Canon will release technical

information as the need arises. When substantial changes are made to the contents of this manual over a long

or short period, Canon will issue a revised edition of this manual.

The following do not apply if they do not conform to the laws or regulations of the country where this manual or

product is used.

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Product and brand names appearing in this manual are registered trademarks or trademarks of the respective

holders.

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another language without the written permission of Canon Inc., except in the case of internal business use.

CANON INC.

i Printer Technical Support Dept. 11, 21

16-1, Shimonoge 3-chome, Takatsu-ku, Kawasaki, Kanagawa 213-8512, Japan

I. Manual Outline

This manual is divided into the following three parts to provide information necessary to service the i550, i850,

and i950.

Part 1: Maintenance

This part describes information necessary for troubleshooting the i550, i850, and i950.

Part 2: Technical Reference

This part provides description of new technologies, etc., used in the i550, i850, and i950.

Part 3: Appendix

This part contains block diagrams, pin layouts, and product specification lists.

Reference

This manual does not provide sufficient information for disassembly and assembly.

Refer to the figures in the separate parts catalogue.

II. Table of Contents

Page Part 1: Maintenance

1 - 1 1. Periodic Replacement/Periodic Inspection/Life

1 - 2 2. Troubleshooting List by Error/Symptom

1 - 5 3. Repair Details

1 - 5 3.1 Precautions

1 - 5 3.1.1 Precautions regarding ink stains

1 - 5 3.1.2 Precautions when releasing the carriage lock

1 - 5 3.1.3 Precautions when removing/installing tap screws

1 - 5 3.1.4 Code strip handling precautions

1 - 6 3.1.5 Do not loosen or remove red screws

1 - 6 3.1.6 Logic board removal precautions

1 - 7 3.2 Adjustments

1 - 7 3.2.1 Waste ink counter setting

1 - 7 3.2.2 Resetting EEPROM

1 - 8 3.2.3 Applying grease (oil)

1 - 9 3.3 Settings

1 - 9 3.3.1 Standalone printer operation

1 - 9 3.3.2 Service mode functions

1 - 11 3.3.3 Test print sample

1 - 14 3.3.4 Printing EEPROM information

1 - 15 3.4 Verification

1 - 15 4. Printer Transportation Method

Page Part 2: Technical Reference

2 - 1 1. New Technologies

2 - 2 2. Cleaning Mode and Suction Amount

2 - 3 3. Print Mode List

2 - 6 4. FAQ

Page Part 3: Appendix

3 - 1 1. Block Diagram

3 - 3 2. Connector Locations and Pin Layout

3 - 3 2.1 i550 Connector Locations and Pin Layout

3 - 8 2.2 i850 Connector Locations and Pin Layout

3 - 12 2.3 i950 Connector Locations and Pin Layout

3 - 16 2.4 Product Specification List

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Maintenance

1 - 1

1. Periodic Replacement/Periodic Inspection/Life

Level Periodic replacement

User None

Service personnel None



Level Periodic inspection

User None

Service personnel None

<Life>

(1) Paper feed count:

- Main body -

30,000 sheets (monochrome, 1,500 character standard text pattern printing)

10,000 sheets (printing each color at 7.5% duty)

<i950>

10,000 sheets (Pattern printing each color at 7.5% duty)

(2) 5 years

The life of this product is (1) or (2) above, which ever comes first.

- Print head life -

30,000 sheets: monochrome printing (1,500 character standard text pattern printing)

10,000 sheets: color printing (pattern printing each color at 7.5% duty)

<i950>

9,000 sheets: Pattern printing each color at 7.5% duty (BK, Y, M, C) : 5,000 sheets

1,500 character standard pattern printing (BK) : 2,000 sheets

Photo image (6 colors) : 2,000 sheets

Carriage ribbon cable holder (visible when access cover is opened)

2. Troubleshooting List by Error/Symptom

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Error codes are displayed on the monitor of the connected computer.

Start the status monitor on the host computer in order to display the error codes.



Orange Flash

(Error Code) Error description Action Assembly/disassembly precautions Adjustment

(1000)

No paper error Set paper and press the Resume key

(1300)

Paper jam error Remove paper and press the Resume

key

- Be careful that spurs do not come off

when removing paper

(1601,1611,

1612,1613

1634*1,1635*1)

No ink error Replace and set ink tank(s) - Be careful of ink stains

(1401)

No cartridge error Install head or replace head/logic

board/carriage - Be careful of ink stains

- Be careful of electrostatic damage

- Set waste ink counter (see 3.2.1)*1

- Set destination (see 3.3.2)

(1403,1405

1485*1)

Cartridge error Replace head/carriage/logic board - Be careful of ink stains

- Be careful of electrostatic damage

- Set waste ink counter (see 3.2.1)*1

- Set destination (see 3.3.2)

(1700)

Waste ink full warning Replace waste ink absorber - Be careful of ink stains

- Be careful of electrostatic damage

- Clear EEPROM (see 3.2.2)

*1: i950 only

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Error messages are displayed on the monitor of the connected computer.

Start the status monitor on the host computer in order to display the error messages.

Cyclical flash

(Error Code) Error description Action Assembly/disassembly precautions Adjustment

(5100)

CR error Replace code strip/carriage

unit/logic board - Be careful of electrostatic damage

- Do not loosen or remove red screws

- There must be no grease on code strip

- Apply grease (see 3.2.3)

- Set waste ink counter (see 3.2.1)*2

- Set destination (see 3.3.2)

(6000)

LF error Replace code wheel/LF encoder

unit/logic board - Be careful of electrostatic damage

- Do not loosen or remove red screws

- There must be no grease on code strip

- Apply grease (see 3.2.3)

- Set waste ink counter (see 3.2.1)*2

- Set destination (see 3.3.2)

(5C00)

Recovery system error Replace purge unit/logic board - Be careful of ink stains

- Be careful of electrostatic damage

- Set waste ink counter (see 3.2.1)*2

- Set destination (see 3.3.2)

(5400)

Internal temperature error *1Replace logic board - Be careful of electrostatic damage - Set waste ink counter (see 3.2.1)*2

- Set destination (see 3.3.2)

(5B00)

Waste ink full error Replace waste ink absorber/logic

board - Be careful of ink stains

- Be careful of electrostatic damage

- Do not loosen or remove red screws

- Clear EEPROM (see 3.2.2)

- Set waste ink counter (see 3.2.1)*2

- Set destination (see 3.3.2)

(5200)

Head overheating error Replace head/logic board - Be careful of ink stains

- Be careful of electrostatic damage

- Set waste ink counter (see 3.2.1)*2

- Set destination (see 3.3.2)

(6800)

EEPROM error Replace logic board - Be careful of electrostatic damage - Set waste ink counter (see 3.2.1)*2

- Set destination (see 3.3.2)

(6100)

ROM error *2Replace logic board - Be careful of electrostatic damage - Set waste ink counter (see 3.2.1)*2

- Set destination (see 3.3.2)

(6300)

RAM error *2Replace logic board - Be careful of electrostatic damage - Set waste ink counter (see 3.2.1)*2

- Set destination (see 3.3.2)

Other hardware error *2Replace head/logic board - Be careful of ink stains

- Be careful of electrostatic damage

- Set waste ink counter (see 3.2.1)*2

- Set destination (see 3.3.2)

LED ON*1

(6800)

RAM error Replace logic board - Be careful of electrostatic damage - Set waste ink counter (see 3.2.1)*2

- Set destination (see 3.3.2)

*1: i550/i850 only *2: i950 only

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Symptom Action Assembly/disassembly precautions Adjustment

Does not power on

Power goes off immediately

after power on

Replace AC adapter/logic board - Be careful of electrostatic damage - Set waste ink counter (see

3.2.1)*1

- Set destination (see 3.3.2)

Head not recognized

Does not return to home

position

Remove/install print head or replace print

head/carriage unit - Be careful of ink stains

- Do not loosen or remove red screws

- There must be no grease on code strip

Abnormal noise Remove debris/correct loose parts

Operation

error

Printing stops before

completing

Replace logic board - Be careful of electrostatic damage - Set waste ink counter (see

3.2.1)*1

- Set destination (see 3.3.2)

Multiple sheets are fed

together Replace ASF

Paper does not feed Remove debris/replace ASF - Be careful that spurs do not come off

Feed error

Paper skews Remove debris/adjust paper guide

position

Does not print at all/no color Replace print head/ink tank/logic

board/purge unit - Be careful of ink stains

- Be careful of electrostatic damage

- Set waste ink counter (see

3.2.1)*1

- Set destination (see 3.3.2)

Scratches or white streaks

appear even after cleaning

Lines not in data printed

Remove/install print head or replace print

head/ink tank/purge unit/carriage unit - Be careful of ink stains

- Do not loosen or remove red screws

- There must be no grease on code strip

Paper is soiled Pass few sheets of paper/clean paper path

with cloth or replace platen absorber/

purge unit

- Be careful of ink stains

Spur tracks appear Replace platen unit - Be careful not to bend spur tips

Missing lines Replace ink tank/head - Be careful of ink stains

Bad coloring Replace print head - Be careful of ink stains

Printing overlapped Replace platen unit

Black ink not ejected Refresh print head/replace print head - Be careful of ink stains

result

error

Figures/characters stretched Clean grease on code strip or replace

carriage unit - Do not loosen or remove red screws

- There must be no grease on code strip

*1: i950 only

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, hand, or clothes with ink during repair.

3.1.2 Precautions when releasing the carriage lock

The carriage locks at the capping position when the power is turned off normally, with the cartridge installed

in the carriage.

If the printer does not operate normally, manually release the carriage lock as necessary.

Turn the gear in the figure in the direction of the arrow to release the carriage lock.

Figure 1-1 Releasing Carriage Lock

3.1.3 Precautions when removing/installing tap screws

Tap screws are used to secure the printer unit and the base. When a tap screw is removed, mold scrap may

adhere to the screw threads, which can damage the mold-side threads when the tap-screw is re-fastened.

Therefore, remove the mold scraps adhered to the screw or use a new screw when re-installing.

3.1.4 Code strip handling precautions

1) Do not apply grease to the code strip.

If grease contacts the code strip, the code strip slits may become unreadable, causing errors.

If grease contacts the code strip, wipe off thoroughly with alcohol.



2) Do not bend or scratch the code strip.

Replace the code strip if it is scratched, or bent until it is white.



3) Extend the leaf spring when attaching or removing the code strip.

The code strip is held taut and secured by the leaf spring.

Note that if the spring is stretched too far in the direction of the arrow, it will not properly re-secure the

code strip.

Be careful not to pull too hard on the code strip when installing or removing it.

 

Figure 1-2 Code Strip

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