Canon PIXMA MP640 Manuel utilisateur

MP640 / MP648

Service Manual

Revision 0

QY8-13CN-000

COPYRIGHTc2009 CANON INC. CANON MP640 082009 XX 0.00-0

Scope

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, installation, maintenance, and repair of products. The manual

covers information applicable in all regions where the product is sold. For this reason, it may contain information that is

not applicable to your region.

This manual does not provide sufficient information for disassembly and reassembly procedures.

Refer to the graphics in the separate Parts Catalog.

Revision

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

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

When substantial changes are made to the contents of the manual, Canon will issue a revised edition.

The following do not apply if they do not conform to the laws and regulations of the region where the manual or product is

used:

Trademarks

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

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

CANON INC.

Inkjet Device Market Support Management Div.

451, Tsukagoshi 3-chome, Saiwai-ku, Kawasaki-shi, Kanagawa 212-8530, Japan

TABLE OF CONTENTS

1. MAINTENANCE

1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement Consumables by Service

Engineer

1-2. Customer Maintenance

1-3. Special Tools

1-4. Sensors

1-5. Serial Number Location

2. LIST OF ERROR DISPLAY / TROUBLESHOOTING

2-1. Operator Call Errors

2-2. Service Call Errors

2-3. Troubleshooting by Symptom

3. REPAIR

3-1. Major Replacement Parts

3-2. Part Replacement Procedures

(1) External housing, scanner unit, and document cover removal

(2) Operation panel removal

(3) Cable wiring and connection

(4) Emblem removal

(5) Carriage unlocking

(6) ASF unit removal

(7) Carriage unit removal

(8) Spur unit and platen unit removal

(9) Purge drive system unit (right plate) and switch system unit (left plate) removal

(10) Engine unit reassembly

(11) Ink absorber replacement

4. ADJUSTMENT / SETTINGS

4-1. User Mode

4-2. Service Mode

(1) Service mode operation procedures

(2) Service Tool functions

(3) LF / Eject correction

(4) Button and LCD test

(5) Ink absorber counter setting

(6) DVD / CD print position correction

4-3. Grease Application

MP640 / MP648

4-4. Special Notes on Servicing

(1) For smeared printing, uneven printing, or non-ejection of ink

(2) Paper feed motor adjustment

(3) Carriage unit replacement

(4) Document pressure sheet (sponge sheet) replacement

(5) Ink absorber counter setting

4-5. Verification After Repair

(1) Standard inspection flow

(2) Service test print

(3) Ink absorber counter value print

5. MACHINE TRANSPORTATION

1. MAINTENANCE

1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement Consumables

by Service Engineer

(1) Adjustment

MP640 / MP648 TABLE OF CONTENTS

Adjustment Timing Purpose Tool Approx.

time

EEPROM

initialization - At logic board replacement To initialize settings Service Tool*2

Perform in the service

mode.

1 min.

Destination

settings

(EEPROM

settings)

- At logic board replacement To set destination. Service Tool*2

Perform in the service

mode.

1 min.

Ink absorber

counter resetting

(EEPROM

settings)

- At logic board replacement

- At ink absorber replacement To reset the ink absorber

counter. Service Tool*2

Perform in the service

mode.

1 min.

Ink absorber

counter value

setting

(EEPROM

settings)

- At logic board replacement To set the ink amount data in

the ink absorber to the ink

absorber counter.

Service Tool*2

Perform in the service

mode.

1 min.

Ink absorber

replacement - When the ink absorber

becomes full To replace the ink absorber

with a new one. Screwdriver, a pair of

tweezers, etc. 15 min.

Paper feed motor

position

adjustment

- At paper feed motor

replacement To adjust the belt tension.

(Position the paper feed motor

so that the belt is stretched

tight.)

None. 5 min.

CD / DVD

detection sensor

light volume

correction*1

- At carriage unit replacement

- At logic board replacement To correct the light volume for

the CD / DVD detection

sensor.

Service Tool*2

Perform in the service

mode.

5 min.

Automatic print

head alignment - At print head replacement

- At logic board replacement

- When print quality is not

satisfying

To secure the dot placement

accuracy. None.

Perform in the user

mode.

5 min.

Manual print head

alignment 10 min.

Grease application - At carriage unit replacement

- At Easy-Scroll Wheel

replacement

To maintain sliding properties

of the carriage rail. FLOIL KG-107A 1 min.

Ink system

function check - At logic board replacement

- At spur unit replacement

- At carriage unit replacement

To maintain detection

functionality for presence of

the ink tanks and each ink tank

position.

Service Tool*2

Perform in the service

mode.

1 min.

LCD language

settings - At logic board replacement To set the language to be

displayed on the LCD. None.

Perform in the user

mode.

1 min.

Platen glass

protection sheet

(document

pressure sheet)

- At protection sheet

replacement

- At document bottom cover

replacement

To maintain scanning

accuracy, hold the sheet with

the long side down, then fit its

upper left corner to the platen

None. 1 min.

1 / 54

N: New adjustment item

*1: Only for CD / DVD printing supported regions.

*2: Install the Service Tool to a pre-registered computer.

(2) Periodic maintenance

No periodic maintenance is necessary.

(3) Periodic replacement parts

There are no parts in this machine that require periodic replacement by a service engineer.

(4) Replacement consumables

There are no consumables that require replacement by a service engineer.

position

adjustment - At scanner unit replacement glass reference mark (back

left).

LF / Eject

correction - At logic board replacement

- At paper feed roller

replacement

To correct line feeding (LF

roller diameter). Service Tool*2

Perform in the service

mode.

5 min.

(LF

correction

and Eject

correction

performed

at the

same

time.)

- At logic board replacement

- At platen unit replacement To correct line feeding (eject

roller diameter). Service Tool*2

Perform in the service

mode.

Carriage rail

position

adjustment

- At carriage unit replacement

- At carriage unit removal To set the carriage rail to the

original position prior to

removal or replacement of the

carriage unit, put a mark on the

main chassis before removal of

the carriage unit.

None. 1 min.

N CD / DVD print

position

adjustment

- At logic board replacement

- When printing shifts from

the correct position

To set the center of CD / DVD

printing. Service Tool*2

Perform in the service

mode.

Varies

depending

on the

degree of

print shift.

- The screws securing the paper feed motor may be loosened only at replacement of the paper feed motor

unit.

- For the automatic print head alignment, use Matte Photo Paper (MP-101), which is packed with the

machine before shipment. If Matte Photo Paper (MP-101) is not available, perform manual print head

alignment using plain paper.

2 / 54

1-2. Customer Maintenance

Adjustment Timing Purpose Tool Approx.

time

Automatic print

head alignment - At print head replacement

- When print quality is not satisfying

(uneven printing, etc.)

To ensure accurate dot

placement. - Machine

buttons

- 1 sheet of Matte

Photo Paper

(MP-101)

- Computer (MP

driver)

5 min.

Manual print head

alignment - At print head replacement

- When print quality is not satisfying

(uneven printing, etc.)

To ensure accurate dot

placement. - Machine

buttons

- Computer (MP

driver)

10 min.

Print head

cleaning When print quality is not satisfying. To improve nozzle

conditions. - Machine

buttons

- Computer (MP

driver)

1 min.

Print head deep

cleaning When print quality is not satisfying, and not

improved by print head cleaning. To improve nozzle

conditions. - Machine

buttons

- Computer (MP

driver)

2 min.

Ink tank

replacement When an ink tank becomes empty. ("No ink

error" displayed on the monitor or on the

machine LCD, or short flashing of an ink

tank LED)

To replace the empty ink

tank. --- 1 min.

Paper feed roller

cleaning - When paper does not feed properly.

- When the front side of the paper is

smeared.

To clean the paper feed

rollers of the selected paper

source (rear tray or

cassette).

- Machine

buttons

- Computer (MP

driver)

2 min.

Bottom plate

cleaning When the back side of the paper is smeared. To clean the platen ribs.

(Feed the paper from the

rear tray.)

- Machine

buttons

- Computer (MP

driver)

1 min.

Scanning area

cleaning When the platen glass or document pressure

sheet is dirty. To clean the platen glass

and pressure sheet. Soft, dry, and

clean lint-free

cloth.

1 min.

Exterior cleaning When necessary To clean the machine

exterior, or to wipe off

dusts.

Soft, dry, and

clean lint-free

cloth.

1 min.

3 / 54

1-3. Special Tools

1-4. Sensors

Click on the image to enlarge it.

Name Tool No. Application Remarks

FLOIL KG-107A QY9-0057-000 To the carriage rail sliding portions. In common with the MP610, etc.

No. Sensor Function Possible problems

1Scanner open sensor Detects opening and closing of the

scanning unit (cover). - The carriage does not move to the center even when

the scanning unit is opened.

2FB encoder sensor Detects rotation of the scanner motor,

and controls scanning operation. - Faulty scanner

- FB motor error

- Faulty scanned or copied images

3Inner cover sensor Detects opening and closing of the inner

cover. - The inner cover is open when it should be closed.

- The inner cover is closed when it should be opened.

4PE sensor Detects the leading and trailing edges of

paper. - No paper

- Paper jam

5ASF cam sensor Detects the position of the ASF cam (for

paper feeding from the rear tray). - ASF cam sensor error

- Paper feeding problem

6APP encoder sensor Detects rotation of the APP encoder, and

controls paper feeding and purging

operation.

- APP sensor error

- APP position error

7Carriage encoder

sensor Detects the position of the carriage. - Carriage position error

- Printing shifts from the correct position.

- Uneven printing

- Strange noise

8Temperature & Ink

amount sensor Detects the temperature of the inside of

the machine and the remaining ink

amount.

- Internal temperature error

- Low-ink or out-of-ink warning

9Ink sensor Detects the position of an ink tank. - Wrong position of an ink tank

- Installation of multiple ink tanks of the same color

- No recognition of an ink tank

10 LF encoder sensor Detects rotation of the LF encoder, and

controls paper feeding. - LF position error

- Uneven printing

11 Eject encoder sensor Detects rotation of the eject encoder, and

controls paper feeding. - LF position error

- Uneven printing

12 Valve cam sensor Detects the position of the purge valve

cam, and controls purging operation. - Valve cam sensor error

13 Pump roller sensor Detects the position of the pump roller,

and controls purging operation. - Pump roller sensor error

14 Purge cam sensor Detects the position of the purge main

cam, and controls purging operation. - PG cam sensor error

4 / 54

5 / 54

6 / 54

1-5. Serial Number Location

On the inner guide over the upper portion of the spur holder (visible when the scanning unit (cover) is opened)

When the machine power is OFF. When the machine power is ON.

<1. MAINTENANCE>

7 / 54

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