Canon MP640 - PIXMA Color Inkjet Service manual

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.
Copyright
All rights reserved. No parts of this manual may be reproduced in any form or by any means or translated into another
language without the written permission of Canon Inc., except in the case of internal business use.
Copyright © 2009 by Canon Inc.
CANON INC.
Inkjet Device Market Support Management Div.
451, Tsukagoshi 3-chome, Saiwai-ku, Kawasaki-shi, Kanagawa 212-8530, Japan
MP640 / MP648
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
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
<TABLE OF CONTENTS>
MP640 / MP648
TABLE OF CONTENTS
1. MAINTENANCE
1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement Consumables
by Service Engineer
(1) Adjustment
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 To reset the ink absorber
- At ink absorber replacement 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 To correct the light volume for Service Tool*2
- At logic board replacement the CD / DVD detection
Perform in the service
sensor.
mode.
Automatic print
head alignment
- At print head replacement
- At logic board replacement
- When print quality is not
Manual print head
satisfying
alignment
To secure the dot placement
accuracy.
Grease application - At carriage unit replacement To maintain sliding properties
- At Easy-Scroll Wheel
of the carriage rail.
replacement
5 min.
None.
Perform in the user
mode.
5 min.
FLOIL KG-107A
1 min.
10 min.
Ink system
function check
- At logic board replacement To maintain detection
Service Tool*2
- At spur unit replacement
functionality for presence of
Perform in the service
- At carriage unit replacement the ink tanks and each ink tank mode.
position.
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
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.
- 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
N CD / DVD print
position
adjustment
- At carriage unit replacement To set the carriage rail to the
None.
- At carriage unit removal
original position prior to
removal or replacement of the
carriage unit, put a mark on the
main chassis before removal of
the carriage unit.
- At logic board replacement
- When printing shifts from
the correct position
To set the center of CD / DVD Service Tool*2
printing.
Perform in the service
mode.
5 min.
(LF
correction
and Eject
correction
is
performed
at the
same
time.)
1 min.
Varies
depending
on the
degree of
print shift.
N: New adjustment item
*1: Only for CD / DVD printing supported regions.
*2: Install the Service Tool to a pre-registered computer.
- 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) 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.
2 / 54
1-2. Customer Maintenance
Adjustment
Automatic print
head alignment
Timing
Purpose
Tool
Approx.
time
- At print head replacement
- When print quality is not satisfying
(uneven printing, etc.)
To ensure accurate dot
placement.
- Machine
5 min.
buttons
- 1 sheet of Matte
Photo Paper
(MP-101)
- Computer (MP
driver)
Manual print head - At print head replacement
alignment
- 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 To improve nozzle
improved by print head cleaning.
conditions.
- Machine
buttons
- Computer (MP
driver)
2 min.
Ink tank
replacement
When an ink tank becomes empty. ("No ink To replace the empty ink
error" displayed on the monitor or on the
tank.
machine LCD, or short flashing of an ink
tank LED)
---
1 min.
Paper feed roller
cleaning
- When paper does not feed properly.
- When the front side of the paper is
smeared.
- 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 To clean the platen glass
sheet is dirty.
and pressure sheet.
Soft, dry, and
clean lint-free
cloth.
1 min.
Exterior cleaning
When necessary
Soft, dry, and
clean lint-free
cloth.
1 min.
To clean the paper feed
rollers of the selected paper
source (rear tray or
cassette).
To clean the machine
exterior, or to wipe off
dusts.
3 / 54
1-3. Special Tools
Name
FLOIL KG-107A
Tool No.
QY9-0057-000
Application
Remarks
To the carriage rail sliding portions.
In common with the MP610, etc.
1-4. Sensors
No.
Sensor
Function
Possible problems
1
Scanner 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.
2
FB encoder sensor
Detects rotation of the scanner motor,
and controls scanning operation.
- Faulty scanner
- FB motor error
- Faulty scanned or copied images
3
Inner 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.
4
PE sensor
Detects the leading and trailing edges of
paper.
- No paper
- Paper jam
5
ASF cam sensor
Detects the position of the ASF cam (for
paper feeding from the rear tray).
- ASF cam sensor error
- Paper feeding problem
6
APP encoder sensor
Detects rotation of the APP encoder, and - APP sensor error
controls paper feeding and purging
- APP position error
operation.
7
Carriage encoder
sensor
Detects the position of the carriage.
- Carriage position error
- Printing shifts from the correct position.
- Uneven printing
- Strange noise
8
Temperature & 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
9
Ink 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 - LF position error
controls paper feeding.
- 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
Click on the image to enlarge it.
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
MP640 / MP648
TABLE OF CONTENTS
2. LIST OF ERROR DISPLAY / TROUBLESHOOTING
Errors and warnings are displayed by the following ways:
1. Operator call errors are indicated by the Alarm LED lit in orange, and the error and its solution are displayed on the
LCD in text and by icon.
2. Messages during printing from a computer are displayed on the MP driver Status Monitor.
3. Error codes (the latest 10 error codes at the maximum) are printed in the "operator call/service call error record" area in
EEPROM information print
Buttons valid when an operator call error occurs:
1. ON button: To turn the machine off and on again.
2. OK button: To clear and recover from an error. In some operator call errors, the error will automatically be cleared
when the cause of the error is eliminated, and pressing the OK button may not be necessary.
3. Stop button: To cancel the job at error occurrence, and to clear the error.
2-1. Operator Call Errors (by Alarm LED Lit in Orange)
Error
code
U
No.
No paper in the
rear tray.
[1000]
---
Rear tray.
There is no paper. Load
paper and press [OK].
No CD / DVD
tray*1.
[1001]
---
There is no CD-R tray.
Set the CD / DVD tray, and press the - CD-R tray
Attach the tray and press OK button.
- Carriage unit
[OK].
No CD / DVD*1.
[1002]
---
Printable disc is not set.
Correctly place a disc in
the CD-R tray and press
[OK].
Set a printable disk in the CD / DVD - CD-R tray
tray, and insert the CD / DVD tray in - Carriage unit
the proper position. Then, press the
OK button.
No paper in the
cassette.
[1003]
---
Cassette.
There is no paper. Load
paper and press [OK].
Confirm that the cassette is selected - Pick-up arm unit
as the paper source. Set the paper in - Pressure roller unit
the cassette, and press the OK button. - Cassette unit
Error
Message on the LCD
Solution
Confirm that the rear tray is selected
as the paper source. Set the paper in
the rear tray, and press the OK
button.
Parts that are likely to
be faulty
- ASF unit
- Pressure roller unit
- PE sensor board unit
Note that the cassette is for plain
paper only.
Paper jam.
[1300]
---
The paper is jammed.
Remove the jammed paper and press - Pick-up arm unit
Clear the paper and press the OK button.
- ASF unit
[OK].
- Pressure roller unit
- Cassette unit
- Rear guide unit
Paper jam in the
rear guide.
[1303]
---
Paper jam in the
under guide.
[1304]
---
Ink may have run
out.
[1600]
U041 The following ink may
have run out. Replacing
the ink tank is
recommended.
Replace the applicable ink tank, or
- Spur unit
press the OK button to clear the error
without ink tank replacement. When
the error is cleared by pressing the
OK button, ink may run out during
printing.
Ink tank not
installed.
[1660]
U043 The following ink tank
cannot be recognized.
(Applicable ink tank
icon)
Install the applicable ink tank(s)
- Ink tank
properly, and confirm that the LED's - Carriage unit
of all the ink tanks light red.
Print head not
[1401]
U051 Print head is not
Install the print head properly.
8 / 54
- Print head
installed, or not
properly
installed.
installed. Install the print
head.
Faulty print head
ID.
Print head
temperature
sensor error.
[1403]
Faulty EEPROM
data of the print
head.
[1405]
U052 The type of print head is
incorrect. Install the
correct print head.
- Carriage unit
Re-set the print head. If the error is
not cleared, the print head may be
defective. Replace the print head.
- Print head
- Carriage unit
Inner cover error. [1841*2,
1846*2,
1851*1,
1856*1,]
---
Inner cover is open.
Close the inner cover, and press the
Close the inner cover and OK button.
press [OK].
[1850*1,
1855*1]
---
Open the inner cover,
place the CD-R tray and
press [OK].
Open the inner cover which functions - Spur unit
as the CD / DVD tray feeder, set the - Inner cover unit
CD / DVD tray in the feeder, and
press the OK button.
Time-out in CD / [1830*1]
DVD print
operation.
---
Timeout error has
occurred. Press [OK].
A prescribed period of time (12
minutes) has elapsed without any
printing since printing was attempted.
Press the Stop button to clear the
error.
- Spur unit
- Inner cover unit
Multiple ink tanks [1487]
of the same color
installed.
U071 More than one ink tank
of the following color is
installed.
Replace the wrong ink tank(s) with
the correct one(s).
- Ink tank
Ink tank in a
wrong position.
U072 Some ink tanks are not
installed in place.
Install the ink tank(s) in the correct
position.
- Ink tank
[1680]
Warning: The ink [1700]
absorber becomes
almost full.
---
The ink absorber is
almost full. Press [OK] to
continue printing.
Contact the service center
for replacement.
The connected
digital camera or
digital video
camera does not
support Camera
Direct Printing.
[2001]
---
The device may be
Remove the cable between the
incompatible. Remove
camera and the machine.
the device and check the
manual supplied with the
connected device.
Automatic duplex [1310]
printing cannot be
performed.
---
This paper is not
compatible with duplex
printing. Remove the
paper and press [OK].
The paper length is not supported for - Duplex printing feed
duplex printing.
roller unit
Press the OK button to eject the
- PE sensor board unit
paper being used at error occurrence.
Data which was to be printed on the
back side of paper at error occurrence
is skipped (not printed).
Failed in
automatic print
head alignment.
---
Auto head align has
failed. Press [OK] and
repeat operation. <See
manual>
Press the OK button to clear the
error, then perform the automatic
print head alignment again.
(In the MP640 / MP648, use Matte
Photo Paper MP-101.)
[2500]
Replace the ink absorber, and reset
The ink absorber will
its counter. [See 4-2. Service Mode.] become full soon (service
Pressing the OK button will exit the call error).
error, and enable printing without
replacing the ink absorber. However,
when the ink absorber becomes full,
no further printing can be performed
unless the applicable ink absorber is
replaced.
9 / 54
- Carriage unit
- Print head
- Purge drive system unit
The remaining ink [1683]
amount unknown
(raw ink present).
U130 The remaining level of
the following ink cannot
be correctly detected.
Replace the ink tank.
An ink tank which has once been
empty is installed. Replace the
applicable ink tank with a new one.
Printing with a once-empty ink tank
can damage the machine.
To continue printing without
replacing the ink tank(s), press the
Stop button for 5 sec. or longer to
disable the function to detect the
remaining ink amount. After the
operation, it is recorded in the
machine EEPROM that the function
to detect the remaining ink amount
was disabled.
- Ink tank
- Spur unit
Ink tank not
recognized.
[1684]
U140 The following ink tank
cannot be recognized.
(Applicable ink tank
icon)
A non-supported ink tank (an ink
tank that is sold in a different region
from where the machine was
purchased) is installed (the ink tank
LED is turned off). Install the
supported ink tanks.
- Ink tank
Ink tank not
recognized.
[1682]
U150 The following ink tank
cannot be recognized.
(Applicable ink tank
icon)
A hardware error occurred in an ink - Ink tank
tank (the ink tank LED is turned off).
Replace the ink tank(s).
No ink (no raw
ink).
[1688]
U163 The following ink has run
out. Replace the ink tank
(Applicable ink tank
icon)
Replace the empty ink tank(s), and
close the scanning unit (cover).
Printing with an empty ink tank can
damage the machine.
To continue printing without
replacing the ink tank(s), press the
Stop button for 5 sec. or longer to
disable the function to detect the
remaining ink amount. After the
operation, it is recorded in the
machine that the function to detect
the remaining ink amount was
disabled.
Non-supported
hub.
[2002]
---
An unsupported USB hub Remove the applicable USB hub
is connected. Remove the from the PictBridge (USB)
hub.
connector.
Time-out for the
scanner device.
[2700]
---
Timeout error has
occurred. Press [OK].
The buffer became full in the middle
of scanning operation, and 60
minutes have elapsed since then,
making re-scanning unstable. Press
the OK button to clear the error.
*1: Only for models supporting CD / DVD printing.
*2: Only for models not supporting CD / DVD printing.
10 / 54
- Ink tank
- Spur unit
2-2. Service Call Errors (by Cyclic Blinking of Alarm and Power LEDs)
Service call errors are indicated by the number of cycles the Alarm and Power LEDs blink, and the corresponding error code
with the message, "Printer error has occurred. Turn off power then back on again. If problem persists, see the manual." is
displayed on the LCD.
Cycles
of
blinking
of Alarm
and
Power
LEDs
Error
Error
code
Conditions
Solution
(Check points and replacement items)
2 times
Carriage error
[5100]
An error occurred in the
carriage encoder signal.
(1) Smearing or scratches on the carriage slit film;
clean the timing slit film.
(2) Foreign material or paper debris that obstructs the
carriage movement;
remove foreign material.
(3) Ink tank conditions;
re-set the ink tanks.
(4) Cable connection
(5) Part replacement:
- Timing slit disk film
- Carriage unit
- Logic board
- Carriage motor
3 times
Line feed error
[6000]
An error occurred in the LF
encoder signal.
(1) Front door operation (opening and closing) during
printing
(2) Smearing or scratches on the LF / EJ slit film;
clean the LF / EJ slit film.
(3) Foreign material or paper debris in the LF drive;
remove foreign material.
(4) Cable connection
(5) Part replacement:
- LF / EJ slit film
- LF / EJ timing sensor unit
- Paper feed roller unit
- Logic board
- Paper feed motor
4 times
Purge cam sensor [5C00] An error occurred in the
error
purge unit.
5 times
ASF (cam) sensor [5700]
error
An error occurred in the ASF (1) Cable connection
cam sensor (during paper
(2) Part replacement:
feeding from the rear tray).
- ASF unit
- PE sensor board unit
- Logic board
6 times
Internal
[5400]
temperature error
The internal temperature is
not normal.
7 times
Ink absorber full
(1) Foreign material or paper debris around the purge
drive system unit;
remove foreign material.
(2) Cable connection
(3) Part replacement:
- Purge drive system unit
- Logic board
(1) Cable connection
(2) Part replacement:
- Carriage unit
- Logic board
- Print head
[5B00, The ink absorber is supposed (1) Ink absorber condition
5B01] to be full.
(2) Part replacement:
Message on the LCD:
- Ink absorber kit and double-sided adhesive tape
Ink absorber full. Contact (3) Ink absorber counter value in the EEPROM;
11 / 54
the service center for
replacement.
Error codes:
5B00: Main ink absorber
is full (overseas).
5B01: Main ink absorber
is full (Japan).
reset the ink absorber counter.
8 times
Print head
temperature rise
error
[5200]
The print head temperature
(1) Print head condition
exceeded the specified value. (2) Head contact pin condition of the carriage unit
(3) Cable connection
(4) Part replacement:
- Print head
- Logic board
- Carriage unit
9 times
EEPROM error
[6800,
6801]
A problem occurred in
(1) Part replacement:
reading from or writing to the
- Logic board
EEPROM.
10 times
VH monitor error [B200] The internal temperature
(1) Head contact pin condition of the carriage unit
exceeded the specified value. (2) Cable connection (especially the carriage FFC)
(3) Part replacement:
- Print head and logic board (Replace them at the
same time.)
- Power supply unit
- Carriage unit
11 times
Carriage lift
mechanism error
[5110]
12 times
APP position
error
14 times
APP sensor error
[6A80] An error occurred in the APP (1) Foreign material or paper debris around the purge
motor.
drive system unit;
remove foreign material, and confirm that the
ink absorber right beneath the purge drive
system unit stays in place and does not contact
the unit.
(2)
Foreign
material or paper debris around the ASF unit;
[6A90] An error occurred during
remove
foreign material.
paper feeding or purging.
(3) Cable connection
(4) Part replacement:
- Purge drive system unit
- Logic board
The carriage did not move up (1) Foreign material or paper debris that obstructs the
or down properly.
carriage movement;
remove foreign material.
(2) Part replacement:
- Switch system unit
- Carriage unit
Paper feed cam
sensor error
[6B10] An error occurred in the paper (1) Jammed paper in the PF rear guide (when a large
feed cam sensor during paper
amount of ink was absorbed in the paper);
feeding from the cassette, or
remove the jammed paper and foreign material.
the paper absorbing a large
(2) Foreign material or paper debris in the cassette or in
amount of ink jammed in the
the PF rear guide;
PF rear guide.
remove foreign material.
(3) Part replacement:
- PF pick-up unit
- Logic board
15 times
USB host Vbus
overcurrent
[9000]
16 times
Pump roller
sensor error
[5C20] The pump roller position
cannot be detected.
17 times
Paper eject
[6010]
The USB host Vbus
overloaded.
(1) Part replacement:
- Logic board
(1) Cable connection
(2) Part replacement:
- Purge drive system unit
An error occurred in the paper (1) Smearing or scratches on the LF / EJ slit film;
12 / 54
encoder error
eject encoder signal.
clean the LF / EJ slit film.
(2) Foreign material or paper debris in the paper path;
remove foreign material.
(3) Cable connection
(4) Part replacement:
- LF / EJ slit film
- LF / EJ timing sensor unit
- Platen unit
- Logic board
- Paper feed motor
19 times
Ink tank position
sensor error
[6502]
None of the ink tank position (1) Ink tank position;
is detected.
confirm the ink tank position.
(2) Re-set or replacement of ink tanks
(3) Cable connection
(4) Part replacement:
- Spur unit
- Logic board
20 times
Other errors
[6500]
An unidentified error or a
network error occurred.
21 times
Drive switch error [C000] Drive was not switched
properly.
(1) Foreign material or paper debris in the drive switch
area;
remove foreign material.
(2) Ink tank conditions;
confirm that the ink tanks are seated properly, or
re-set the ink tanks properly.
(3) Part replacement:
- Purge drive system unit
- ASF unit
- Carriage unit
22 times
Scanner error
[5011]
An error occurred in the
scanner.
(1) Document pressure sheet conditions
(2) Cable connection
(3) Part replacement:
- Document pressure sheet (sponge sheet)
- Scanner unit
- Logic board
FB motor error
[5012]
An error occurred in the
scanner FB motor.
(1) Cable connection
(2) Part replacement:
- Scanner unit
Scanner electric
circuit error
[5050]
The AFE was faulty.
(1) Cable connection
(2) Part replacement:
- Scanner unit
23 times
Valve cam sensor [6C10] The valve cam sensor was
error
faulty at power-on or when
purging was attempted.
(1) Part replacement:
- Logic board
- WLAN board
(1) Foreign material or paper debris around the purge
drive system unit;
remove foreign material.
(2) Cable connection
(3) Part replacement:
- Purge drive system unit
- Logic board
Before replacement of the logic board ass'y, check the ink absorber counter value (by service test print or
EEPROM information print). If the counter value is 7% or more, also replace the ink absorber kit when
replacing the logic board ass'y. If the counter value is less than 7%, register the current ink absorber
counter value to the replaced new logic board instead. [See 4-2. Service Mode, for details.]
13 / 54
2-3. Troubleshooting by Symptom
Symptom
Faulty operation
Solution
The power does not turn on.
The power turns off immediately
after power-on.
(1) Confirm connection of the power supply unit:
- Harness and connector conditions
(2) Replace the following item(s):
- Logic board
- Power supply unit
- Panel board
A strange noise occurs.
(1) Examine and remove any foreign material or paper debris.
(2) Replace the following item(s):
- The part generating the strange noise
- Logic board
The LCD does not display properly. (1) Confirm cable connection (LCD FFC and panel harness):
A portion of the LCD is not
- Harness and connector conditions
displayed.
- No cable breakage, etc.
The display flickers.
(2) Replace the following item(s):
- LCD FFC
- LCD viewer unit
- Panel board
- Logic board
Paper feed problems (multi-feeding, (1) Examine and remove any foreign material or paper debris.
skewed feeding, no feeding).
(2) Confirm that the paper guides are set properly.
(3) Confirm the PF rear cover and the cassette conditions.
(4) Confirm cable connection.
(5) Replace the following item(s):
- ASF unit (for paper feeding error from the rear tray)
- PF pick-up unit (for paper feeding error from the cassette)
- PE sensor board
- Pressure roller unit
- Cassette unit
Faulty scanning (no scanning,
strange noise).
(1) Confirm cable connection (scanner motor cable and CIS
FFC):
- Harness and connector conditions
- No cable breakage, etc.
(2) Replace the following item(s):
- Scanner unit
- Logic board
The CD / DVD tray is not pulled in (1) Confirm the reflector of the back of the CD / DVD tray:
the feeder.
- Cleaning of the reflector
(2) Replace the following item(s):
- Logic board
- CD-R tray
- Platen unit
Unsatisfactory print quality No printing, or no color ejected.
Faint printing, or white lines on
printouts.
Uneven printing.
Improper color hue.
Paper gets smeared.
(1) Confirm the ink tank conditions:
- Confirmation of the air-through of an ink tank
- Re-setting of an ink tank
- Whether the ink tank is Canon-genuine one or not
- Whether the ink tank is refilled one or not
(2) Remove foreign material from the purge unit caps, if any.
(3) Perform cleaning or deep cleaning of the print head.
(4) Perform print head alignment.
(5) Replace the following item(s):
- Print head*1, and ink tanks
- Logic board
- Purge drive system unit
(1) Clean the inside of the machine.
(2) Perform bottom plate cleaning.
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(3) Perform paper feed roller cleaning.
(5) Replace the following item(s):
- Pressure roller unit (if smearing is heavy)
- Print head*1 (when smearing is caused by the print head)
The back side of paper gets
smeared.
(1) Clean the inside of the machine.
(2) Perform bottom plate cleaning.
(3) Examine the platen ink absorber.
(4) Examine the paper eject roller.
(5) Replace the following item(s):
- The part in the paper path causing the smearing
Graphic or text is enlarged on
printouts in the carriage movement
direction.
(1) Confirm that the carriage slit film is free from smearing or
scratches:
- Cleaning of the timing slit film.
(2) Replace the following item(s):
- Timing slit film
- Carriage unit
- Logic board
- Scanner unit (for copying)
Graphic or text is enlarged on
(1) Confirm that the LF / EJ slit film is free from smearing or
printouts in the paper feed direction. scratches:
- Cleaning of the LF / EJ slit film..
(2) Replace the following item(s):
- LF / EJ slit film
- LF / EJ timing sensor unit
- Platen unit
- Logic board
- Scanner unit (for copying)
Faulty scanning
Streaks or smears on the printed
CD / DVD.
(1) Confirm that the CD or DVD is a recommended one or not,
and change the printer driver settings accordingly.
(2) Replace the following item(s):
- CD-R tray
- Pressure roller unit (if smearing is heavy)
- Platen unit
No scanning.
(1) Replace the following item(s):
- Scanner unit
- Logic board
Streaks or smears on the scanned
image.
(1) Clean the platen glass and the document pressure sheet.
(2) Confirm the position of the document pressure sheet.
(3) Replace the following item(s):
- Scanner unit
- Document pressure sheet
- Logic board
*1: Replace the print head only after the print head deep cleaning is performed 2 times, and when the problem persists.
*2: Only for CD / DVD printing supported regions.
<2. LIST OF ERROR DISPLAY / TROUBLESHOOTING>
15 / 54
MP640 / MP648
TABLE OF CONTENTS
3. REPAIR
3-1. Major Replacement Parts
Recommended removal
procedure*1 / Notes on
replacement*2
Service
part
Logic board
ass'y
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Cassette unit
Left and right side covers
Document pressure plate unit
Scanner unit
Main case
Rear cover
Logic board ass'y
- Before removal of the logic board ass'y,
remove the power cord, and allow for
approx. 1 minute (for discharge of
capacitor's accumulated charges), to
prevent damages to the logic board
ass'y.
- Before replacement, check the ink
absorber counter value (by service test
print or EEPROM information print).
Absorber kit (1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
Cassette unit
Left and right side covers
Document pressure plate unit
Scanner unit
Main case
Rear cover
Print unit
Ink absorber
Adjustment / settings
After replacement:
1. Initialize the EEPROM.
2. Set the ink absorber counter
value.
3. Set the destination in the
EEPROM.
4. Correct the CD / DVD and
automatic print head alignment
sensors.
5. Check the ink system function.
6. Perform LF / Eject correction
(only when streaks or uneven
printing occurs).
7. Perform button and LCD test.
Perform 1 to 7 in the service
mode.
[See 4-2. Service Mode, for
details.]
8. Perform print head alignment
in the user mode.
9. Set the language displayed on
the LCD in the user mode.
Operation check
- EEPROM information print
- Service test print
- Printing via USB connection
- Copying
- Direct printing from a digital
camera (PictBridge)
- Ink absorber counter value
After replacement:
1. Reset the ink absorber counter. print (After the ink absorber
counter is reset, the counter
[See 4-2. Service Mode, for
value is printed
details.]
automatically.)
- See 3-2. Part Replacement Procedures,
(11) Ink absorber replacement, for
details.
Carriage unit (1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
Cassette unit
Left and right side covers
Document pressure plate unit
Scanner unit
Main case
Rear cover
Timing slit strap
Carriage rail
Carriage unit
At replacement:
1. Apply grease to the sliding
portions of the carriage rail.
[See 4-3. Grease Application,
for details.]
2. Check the ink system
function.
[See 4-2. Service Mode, for
details.]
3. Perform print head alignment
- Before removal of the carriage rail, put a
in the user mode.
mark of the carriage rail position.
- Keep the timing slit strap (carriage
encoder film) free from stain or damage.
When returning the strap, make sure of
its orientation (left and right, front and
16 / 54
- Service test print (Confirm
CD / DVD sensor correction
value, automatic print head
alignment sensor value, and
ink system function.)
back).
- See 3-2. Part Replacement Procedures,
(7) Carriage unit removal, for details.
Switch
system unit
(1) Cassette unit
(2) Left and right side covers
(3) Document pressure plate unit
(4) Scanner unit
(5) Main case
(6) Rear cover
(7) Print unit
(8) See 3-2. Part Replacement
Procedures.
At replacement:
1. Adjust the paper feed motor.
[See 4-4. Special Notes on
Servicing, (2) Paper feed
motor adjustment, for details.]
- EEPROM information print
- Service test print
Paper feed
motor
- The screws securing the paper feed
motor are allowed to be loosened only
for paper feed motor replacement. (DO
NOT loosen them in any other cases.)
- See 3-2. Part Replacement Procedures,
(9) Purge drive system unit (right plate)
and switch system unit (left plate)
removal, for details.
- See 3-2. Part Replacement Procedures,
(10) Engine unit reassembly, for details.
Platen unit
(1) Cassette unit
(2) Left and right side covers
(3) Document pressure plate unit
(4) Scanner unit
(5) Main case
(6) Rear cover
(7) Print unit
(8) See 3-2. Part Replacement
Procedures, from this step.
After replacement:
1. Perform LF / Eject correction
in the service mode (only
when uneven printing or
streaks appear on printouts
after replacement).
[See 4-2. Service Mode, for
details.]
- EEPROM information print
- Service test print
Spur unit
(1) Cassette unit
(2) Left and right side covers
(3) Document pressure plate unit
(4) Scanner unit
(5) Main case
(6) Rear cover
(7) Print unit
(8) See 3-2. Part Replacement
Procedures.
- EEPROM information print
After replacement:
1. Check the ink system function. - Service test print
2. Perform LF / Eject correction
in the service mode (only
when uneven printing or
streaks appear on printouts
after replacement).
[See 4-2. Service Mode, for
details.]
- DO NOT contact the spur edges.
Purge drive
system unit
(1) Cassette unit
(2) Left and right side covers
(3) Document pressure plate unit
(4) Scanner unit
(5) Main case
(6) Rear cover
(7) Print unit
(8) See 3-2. Part Replacement
Procedures.
- Service test print
After replacement:
1. Confirm the purging operation
and the machine operation.
[See 4-5. Verification After
Repair for details.]
- See 3-2. Part Replacement Procedures,
(9) Purge drive system unit (right plate)
and switch system unit (left plate)
removal, for details.
- See 3-2. Part Replacement Procedures,
(10) Engine unit reassembly, for details.
17 / 54
Carriage rail See 3-2. Part Replacement Procedures,
and main
and Parts Catalog.
chassis
Idler pulley
parallel pin
At replacement:
1. Apply grease to the sliding
portions.
[See 4-3. Grease Application,
for details.]
- Service test print
APP code
wheel gear
shaft
Document
pressure
sheet
Document
bottom
cover
(1)
(2)
(3)
(4)
Cassette unit
Left and right side covers
Document pressure plate unit
Scanner unit
- Service test print
At replacement:
1. Confirm the document
pressure plate sheet position.
[See 4-4. Special Notes on
Servicing, (4) Document
pressure sheet replacement, for
details.]
(1)
(2)
(3)
(4)
Right side cover
Document pressure plate unit
Panel board
LCD viewer
- Service test print
At replacement:
1. Perform button and LCD test.
[See 4-2. Service Mode, for
details.]
Scanner unit
Panel board
ass'y
LCD viewer
unit
- Be cautious not to scratch or damage the
LCD cable.
Timing slit
strip film
Timing slit
disk feed
film
Timing slit
disk eject
film
See 3-2. Part Replacement Procedures,
and Parts Catalog.
- Upon contact with the film, wipe the
film with ethanol.
- Confirm no grease is on the film. (Wipe
off any grease thoroughly with
ethanol.)
- Do not bend the film.
Print head
Wireless
LAN board
ass'y
(1)
(2)
(3)
(4)
(5)
(6)
Cassette unit
Left and right side covers
Document pressure plate unit
Scanner unit
Main case
WLAN board
After replacement:
1. Perform print head alignment
in the user mode.
2. Perform LF / Eject correction
in the service mode (only
when uneven printing or
streaks appear on printouts
after replacement).
[See 4-2. Service Mode, for
details.]
- EEPROM information print
- Service test print
After replacement:
1. Perform print head alignment
in the user mode.
- Service test print
After replacement:
1. Reset the LAN settings in the
user mode.
2. Print the EEPROM
information in the service
mode to confirm that the
WLAN MAC address is
properly updated.
- EEPROM information print
- Service test print
18 / 54
*1: To reassemble the unit after replacement, follow the procedures in the reverse order.
*2: General notes:
- Make sure that the flexible cables and wires in the harness are in the proper position and connected correctly. See 32. Part Replacement Procedures or the Parts Catalog for details.
- Do not drop the ferrite core, which may cause damage.
- Protect electrical parts from damage due to static electricity.
- Before removing a unit, after removing the power cord, allow the machine to sit for approx. 1 minute (for capacitor
discharging to protect the logic board ass'y from damages).
- Do not touch the timing slit strip film, timing slit disk feed film, and timing slit disk eject film. No grease or
abrasion is allowed.
- Protect the units from soiled with ink.
- Protect the housing from scratches.
- For the MP640 / MP648 automatic print head alignment, use Matte Photo Paper (MP-101) to ensure alignment
accuracy.
- Exercise caution with the screws, as follows:
i. The screws of the paper feed motor may be loosened only at replacement of the paper feed motor unit
(DO NOT loosen them in other cases).
ii. Before loosening the 3 screws that fix the carriage rail to the main chassis, mark the screw positions so
that the carriage rail will be re-attached to the main chassis in its original position. [See 3-2. Part
Replacement Procedures, (7) Carriage unit removal, for details.]
<3-1. Major Replacement Parts>
19 / 54
MP640 / MP648 --- 3. REPAIR
3-2. Part Replacement Procedures
TABLE OF CONTENTS
(Click on the image to enlarge it.)
Be sure to protect the machine from static electricity in repair servicing, especially for the LCD, operation panel board, scanner
unit, logic board, card board, IrDA board, PE sensor board, and WLAN board.
Some of the photos are of the iP4600, iP4700, and MP630, since their structures are same.
(1) External housing, scanner unit, and document cover removal
1) Remove the cassette.
2) Open the front door and scanner unit, then remove the side cover R (2 screws).
<The scanner unit hinges are fitted in the right and left side covers.>
20 / 54
3) Remove the scanner cable, panel cable, FB encoder cable, and core.
<The core is fixed on the rib of the sub-case (back of the main case).>
4) Remove the side cover L, scanner unit, then document pressure plate unit (2 screws).
<While holding the scanner unit, remove the side cover L, then disengage the scanner unit from the scanner support
arm.>
21 / 54
5) Remove the main case and sub-case (no screws).
22 / 54
23 / 54
(2) Operation panel removal
1) Separate the document pressure plate from the scanner unit.
<While pushing the hinge edge inward, pull the plate upward to separate it from the scanner unit.>
<Remove the panel cable from the scanner unit. It will make it easier if the cable core is removed first.>
2) Remove the panel cover.
<Insert a pair of tweezers through into the hole in the bottom of the document pressure plate, and push the panel cover
to release it from the plate base.>
3) Remove the top cover from the base (9 screws).
<There are 2 claws at the center of the top cover where the document pressure sheet (sponge sheet) is attached.>
24 / 54
4) Remove the operation panel unit from the base (4 screws).
<For the hinge cable core position and cable layout, see the photos below. Use the longnose pliers in disengaging the
hinge and in releasing the spring.>
5) Remove the panel board (10 screws).
6) When replacing the Easy-Scroll Wheel, always replace the entire wheel with a new one, since grease is already applied to it.
25 / 54
(3) Cable wiring and connection
1) Wiring on the right side
2) Wiring of the ink sensor cable and the inner cover open sensor cable
3) Wiring on the left side. Pass the ground cable through the hole to hook it on the side of the bottom case.
26 / 54
(4) Emblem removal
Push the emblem bottom to remove from the double-sided adhesive tape.
(5) Carriage unlocking
1) Rotate the APP motor drive gear toward the back of the machine to unlock the carriage.
Slide the carriage to the left (the opposite of the home position).
27 / 54
(6) ASF unit removal
1) Remove the PE sensor board first, then remove 1 screw from the left plate (the left side of the ASF unit), and 2 screws
from the right plate (the right side of the ASF unit).
28 / 54
(7) Carriage unit removal
1) On the main chassis, mark the positions of the screws that fix the carriage rail to the main chassis (3 points for each
screw: the left, right, and center).
2) Remove the timing slit film. Be cautious to keep it free from any grease or damage.
3) Pass the head of a flat-blade screwdriver through the hole of the main chassis, and press the carriage belt to release it
from the pulley. Be cautious to keep it free from any grease.
29 / 54
4) Remove the carriage cable holder from the front chassis. Remove 3 screws that fix the carriage rail to the main
chassis, then slowly put down the carriage rail.
5) Remove the carriage unit. Be cautious that the grease will not attach to any parts.
If the carriage unit is not necessary to be replaced, parts under the purge drive system unit, etc. can be
replaced without removing the carriage rail. While holding a set of a) main chassis, b) carriage rail, and c)
carriage unit together, just remove the screws from the left and right plates. This way, you just have to
reassemble the set of units (marking of the carriage rail position to the main chassis is not necessary).
30 / 54
(8) Spur unit and platen unit removal
1) Remove the ink sensor and the inner cover sensor from the front chassis (1 screw each).
2) From the left and right sides of the spur unit, release the springs (2 on the left side, 1 on the right side). Then, slowly
pull the spur unit upward to remove it from the platen unit.
31 / 54
3) Remove the front chassis (3 screws).
4) Unlock the paper eject roller gear. While raising the front of the platen unit, remove the platen unit from the printer
unit.
32 / 54
(9) Purge drive system unit (right plate) and switch system unit (left plate) removal
1) Release the springs of the carriage motor cable, duplex printing paper feed roller, cassette feed roller, cassette feed
guide, and paper guide unit (both sides). (See the Parts Catalog for details.)
2) Remove the springs (left and right) from the pressure roller unit.
3) Remove the screws that fix the units to the main chassis (2 on the right, 3 on the left).
33 / 54
4) Separate the main chassis from the switch system unit and the purge drive system unit.
Switch system unit:
Purge drive system unit:
34 / 54
(10) Engine unit reassembly
After repair, reassemble each unit of the printer engine on the bottom case in the procedures listed below.
Depending on the replaced unit, some steps can be omitted. For specific part names and locations, refer to the Parts Catalog.
1) Install the switch system unit in the bottom case, and fasten the screws.
2) Attach the duplex print paper feed roller unit to the purge drive system unit, and fix them to the bottom case with the screws.
3) Attach the cassette feed guide.
4) Install the cassette feed roller unit.
5) Install the paper feed roller unit and attach the paper feed belt.
6) Attach the paper guide unit to the paper feed roller, and attach the springs to each side of the guide unit. (Hook the other end of
each spring on the protrusion of the right and left plates respectively.)
7) Install the platen unit and the spur unit.
8) Connect the springs on each side of the spur holder to the switch system unit and the purge drive system unit respectively.
9) Attach the inner cover and the release arm.
10) Fix the pressure roller unit to the main chassis (screw it to the right and left plates).
11) Attach the carriage unit and the carriage rail to align with the marks on the main chassis.
12) Hook the torsion springs of the pressure roller unit to the main chassis, then the springs kept at the right and left plates in step
6) to the main chassis.
<Spring location>
13) While being cautious not to damage the carriage FFC, install the front chassis and the ground chassis.
14) Attach the ink sensor board to the front chassis.
15) Install the ASF unit and attach the PE sensor board.
16) Install the main PCB chassis.
17) Arrange each harness.
18) Attach the carriage encoder.
19) Install the logic board.
35 / 54
(11) Ink absorber replacement
If the ink absorber alone needs to be replaced (because the ink absorber becomes full, etc.) and no other engine parts are replaced,
the ink absorber can be replaced only by separating the print unit from the bottom case. It is not necessary to disassemble the
whole engine unit.
1) Disconnect the DC harness from the logic board (right side of the machine).
2) Disconnect the ground cable from the front chassis (left side of the machine).
3) Remove a total of 6 screws that fix the switch system unit to the bottom case, and the purge drive system unit to the
bottom case.
Specific screw location:
Photo of the iP4600 (same engine as the MP640 / MP648):
36 / 54
4) Slowly lift the print unit to separate it from the bottom case.
5) Remove the paper separation slope, since a portion of the ink absorber lies under it.
6) Replace the ink absorber.
Confirm that the replaced new ink absorber completely fits in place and is not lifted or dislocated.
7) While being cautious of the ink tube and each harness location, return the print unit to the bottom case, and fasten the
screws (removed in step 2).
8) Properly arrange and connect the harnesses, install the scanner unit, and attach the document pressure plate unit and
external housing.
After replacement of the ink absorber, reset the ink absorber counter (or set the appropriate counter value) in
the service mode.
For details, see 4-2. Service Mode.
<3-2. Part Replacement Procedures>
37 / 54
MP640 / MP648
TABLE OF CONTENTS
4. ADJUSTMENT / SETTINGS
4-1. User Mode
Function
Nozzle check
pattern printing
Procedures
Perform via the machine
operation panel, or from the MP
driver Maintenance tab.
Remarks
Set a sheet of plain paper (A4 or Letter) in the cassette, or the rear tray
if selected.
Print head
- Cleaning both Black and Color:
manual cleaning
Perform via the machine
operation panel.
- Cleaning Black or Color
separately, or both Black and
Color:
Perform from the MP driver
Maintenance tab.
Unclogging of the print head nozzles, and maintenance to keep the
print head conditions good.
If there is a missing portion or white streaks in the nozzle check pattern
printout, perform this cleaning.
Print head deep
cleaning
If print head manual cleaning is not effective, perform this cleaning.
Since the deep cleaning consumes more ink than regular cleaning, it is
recommended to perform deep cleaning only when necessary.
Perform via the machine
operation panel, or from the MP
driver Maintenance tab.
Automatic print Perform via the machine
head alignment operation panel, or from the MP
driver Maintenance tab.
Set a sheet of Matte Photo Paper MP-101 (A4) in the rear tray. If the
automatic print head alignment is not effective, perform manual print
head alignment.
Manual print
head alignment
Set 3 sheets of plain paper (A4 or Letter) in the cassette, or the rear
tray if selected.
Perform via the machine
operation panel, or from the MP
driver Maintenance tab.
Print head
Perform via the machine
alignment value operation panel, or from the MP
printing
driver Maintenance tab.
Confirmation of the current print head alignment values.
Paper feed roller Perform via the machine
cleaning
operation panel, or from the MP
driver Maintenance tab.
The paper feed rollers of the selected paper source (the rear tray or the
cassette) rotate while being pushed to the paper lifting plate. Since the
rollers will wear out in this cleaning, it is recommended that you
perform this only when necessary.
Bottom plate
cleaning
Cleaning of the platen ribs when the back side of paper gets smeared.
Fold a sheet of plain paper (A4 or Letter) in half crosswise, then unfold
and set it in the rear tray with the folded ridge facing down. (No paper
feeding from the cassette)
Perform via the machine
operation panel, or from the MP
driver Maintenance tab.
38 / 54
4-2. Service Mode
(1) Service mode operation procedures
Use the Service Tool on the connected computer.
1) Start the machine in the service mode.
i. With the machine power turned off, while pressing the Stop button, press and hold the ON button. (DO NOT release the
buttons.)
ii. When the Power LED lights in green, while holding the ON button, release the Stop button. (DO NOT release the
ON button.)
iii. While holding the ON button, press the Stop button 2 times, and then release both the ON and Stop buttons. (Each
time the Stop button is pressed, the Alarm and Power LEDs light alternately, Alarm in orange and Power in
green, starting with Alarm LED.)
iv. When the Power LED lights in green and the machine displays "Service Mode Idle," the machine is ready for the
service mode operation.
2) Start the Service Tool on the connected computer.
i. When a button is clicked in the Service Tool dialog box, that function is performed. During operation of the selected
function, all the Service Tool buttons are dimmed and inactive.
ii. When the operation is completed, "A function was finished." is displayed, and another function can be selected.
iii. If a non-supported function is selected, "Error!" is displayed. Click OK in the error message dialog box to exit the
error.
39 / 54
(2) Service Tool functions
Service Tool screen: Version 1.05
No.
Name
(1) Test Print
Function
Service test print
Remarks
Paper (2 sheets) will feed from the rear tray.
Service test print items:
- Model name
- ROM version
- USB serial number
- EEPROM information
- Process inspection information
- Barcode (model name + destination + machine serial number)
- Ink system function check result
- CD / DVD sensor check result (printed on the second sheet)
(2) EEPROM
EEPROM information print
The dialog box opens to select the paper source. Select Rear tray
or Cassette, and click OK.
EEPROM information print items:
- Model name
- ROM version
- Ink absorber counter value (ink amount in the ink absorber)
- Print information
- Error information, etc.
(3) CD-R
CD-R check pattern print
For refurbishment use. Not used in servicing.
40 / 54
(4) LF / Eject
LF / Eject correction pattern
print
Perform LF / Eject correction only when streaks or uneven
printing occurs after the repair. See "LF / Eject Correction" below.
(5) Nozzle check
Nozzle check pattern print
The dialog box opens to select the paper source. Select Rear tray
or Cassette, and click OK.
(6) Integration
Successive print of (1) service
test pattern, (2) EEPROM
information, and (5) nozzle
check pattern
Paper will feed from the rear tray.
(7) Left Margin
Left margin pattern print
Not used.
(8) Deep Cleaning
Print head deep cleaning
Cleaning of both Black and Color at the same time
(9) Main
Main ink absorber counter
resetting
Set a sheet of A4 or Letter sized plain paper. After the ink
absorber counter is reset, the counter value is printed
automatically.
Platen ink absorber counter
resetting
Not used.
(10) EEPROM Clear
EEPROM initialization
The following items are NOT initialized, and the shipment arrival
flag is not on:
- USB serial number
- Destination settings
- Record of ink absorber counter resetting and setting
- Record of repair at the production site
- CD / DVD print position correction value
- LF / Eject correction values
- Left margin correction value
- Production site E-MIP correction value and enabling of it
- Endurance correction value and enabling of it
- Record of disabling the function to detect the remaining ink
amount
- Ink absorber counter value (ink amount in the ink absorber)
(11) Panel Check
Button and LCD test
See "Button and LCD Test" below.
(12) Set Destination
Destination settings
Select the destination, and click Set.
ASA, AUS, BRA, CHN, CND, EUR, JPN, KOR, LTN, TWN,
USA
(13) CD-R Correction
CD / DVD print position
correction (X and Y direction)
To be used with (3) CD-R check pattern print, mainly in
refurbishment operation.
Platen
The reference center in the X direction and in the Y direction can
be adjusted respectively. (Adjustable range between -1.0 mm to
+1.0 mm, in 0.1 mm increment)
(14) LF / EJECT
Correction
LF / Eject correction value
setting
Set the correction value according to the result of (4) LF / Eject
correction pattern print. See "LF / Eject Correction" below.
(15) Left Margin
Correction
Left margin correction value
setting
Not used.
(16) Ink Absorber
Counter
Ink absorber counter setting
See "Ink Absorber Counter Setting" below.
(17) Wetting Liquid
Counter
Wetting liquid counter setting
Not used.
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(3) LF / Eject correction
After replacement of the feed roller, platen unit, LF / Eject encoder, carriage encoder film, or logic board in repair servicing or in
refurbishment operation, perform the adjustment to maintain the optimal print image quality.
If the print quality is considered unaffected by replacement of those parts, it is not necessary to perform LF / Eject correction.
1) Print the LF / Eject correction pattern.
Click LF/EJECT of the Service Tool on the connected computer, select the paper source and the paper type, and print the
pattern. 5 sheets of A4 paper will be used for the pattern printing.
- Paper source: Select either Rear tray or Cassette.
- Media type: Select one from HR-101, GF-500/Office Planner, HP Bright White, and Canon
Extra/STEINBEIS.
2) When printing is finished, "A function was finished" is displayed on the computer, and the machine returns to be ready for
selection of another function.
3) In the printout, determine the Pattern No. in which streaks or lines are the least noticeable for the LF check pattern and the Eject
check pattern respectively.
(LF Pattern No. 0 to 4, Eject Pattern No. 0 to 4)
4) Select and set the correction values.
In the LF/EJECT Correction section of the Service Tool, select the Pattern No. (from 0 to 4) determined in step 3) for LF and
EJECT respectively, and click Set.
5) The selected LF and Eject correction values are written to the EEPROM, making the E-MIP correction value (which was set at
shipment from the production site) invalid.
Note: At the production site, the E-MIP correction, which is equivalent to the LF / Eject correction, is performed
using the special tool, and the E-MIP correction value is written to the EEPROM as the valid data.
When LF / Eject correction is performed, the LF / Eject correction values become valid instead of the E-MIP
correction value (thus, in the initial EEPROM information print, "LF = *" and "EJ = *" are printed, but the
selected values are printed after the LF / Eject correction).
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(4) Button and LCD test
Confirm the operation after replacement of the operation panel board or LCD unit.
1) Click Panel Check of the Service Tool on the connected computer. The machine LCD turns blue, waiting for a button to be
pressed.
2) Press each button of the operation panel, to see if every button functions properly.
3) The LCD is divided into 16 segments, representing each button. The color of a segment corresponding to the pressed button
changes to red. If 2 or more buttons are pressed at the same time, only one of them is considered to be pressed, and the other
buttons are ignored.
1. ON button
10. Stop button
2. Back button
11. NAVI button
3. OK button
12. HOME button
4. Up cursor button
13. Left function button
5. Down cursor button
14. Right function button
6. Left cursor button
7. Right cursor button
15. + button
16. - button
8. Black button
9. Color button
4) Easy-Scroll Wheel check
4-1) Rotate the Easy-Scroll Wheel clockwise step by step. The LCD is divided into 6 segments, representing each step. The
color of a segment corresponding to the step changes from red to green. If the wheel is rotated counterclockwise before
clockwise round completes, the color of segment(s) corresponding to the number of steps the wheel is rotated
counterclockwise returns to red. If the wheel keeps rotated clockwise over 1 round (6 steps), the color of segment(s)
corresponding to the extra number of steps returns to red, starting with the "Start" segment in the figure below.
4-2) When the Easy-Scroll Wheel is rotated clockwise 1 round (6 steps), press the OK button.
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4-3) Rotate the Easy-Scroll Wheel counterclockwise step by step. The LCD is divided into 6 segments, representing each step.
The color of a segment corresponding to the step changes from green to blue. If the wheel is rotated clockwise before
counterclockwise round completes, the color of segment(s) corresponding to the number of steps the wheel is rotated
clockwise returns to green. If the wheel keeps rotated counterclockwise over 1 round (6 steps), the color of segment(s)
corresponding to the extra number of steps returns to green, starting with the "Start" segment in the figure below.
4-4) When the Easy-Scroll Wheel is rotated counterclockwise 1 round (6 steps, and all the segments are in blue), press the OK
button. The color pattern is displayed on the LCD. If there is any segment that is not in blue when the OK button is
pressed, the display remains unchanged.
5) Transparent pattern display check
5-1) Press the OK button. "OK1" in white is displayed on the black background. If the result is not good, "NG1" in black is
displayed on the white background (transparent color) immediately after "OK1." Wait for approx. 2 seconds.
5-2) Press the OK button. "OK2" in black is displayed on the white background. If the result is not good, "NG2" in white is
displayed on the black background (transparent color) immediately after "OK2."
5-3) Press the OK button. The machine returns to be ready for selection of another function ("Service Mode Idle" is displayed
on the LCD).
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(5) Ink absorber counter setting
Set the ink absorber counter value to a new EEPROM after the logic board is replaced in servicing.
1) Before replacement of the logic board, check the ink absorber counter value in EEPROM information print.
2) After replacement of the logic board, the ink absorber counter value should be set in the service mode using the Service Tool.
In the Ink Absorber Counter section of the Service Tool, select Main from the Absorber pull-down menu.
From the Counter Value(%) pull-down menu, select the value (in 10% increments) which is the closest to the actual counter
value confirmed before replacement of the logic board, and click Set.
3) Print EEPROM information to confirm that the value is properly set to the EEPROM.
(6) DVD / CD print position correction
Set the DVD / CD print position value to a new EEPROM after the logic board is replaced in servicing.
This function can be also used in solving user complaints in the field, however, use of the application software is recommended
for solution of user complaints.
1) Before replacement of the logic board, check the DVD / CD print position value in EEPROM information print.
2) After replacement of the logic board, set the DVD / CD print position value in the service mode using the Service Tool, CD-R
Correction section.
3) If the DVD / CD print position value from the original logic board is not available due to the logic board failure, etc., print the
CD-R check pattern and confirm that the intersection of the X axis and Y axis is at the center of a DVD / CD.
<4-1. User Mode & 4-2. Service Mode>
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MP640 / MP648 --- 4. ADJUSTMENT / SETTINGS
TABLE OF CONTENTS
4-3. Grease Application
No
Part name
Where to apply grease / oil
Drawing
No.
Grease
Grease
amount
(mg)
Number of
drops x
location
1
Carriage rail
The surface where the carriage unit slides
(1)
Floil KG107A
230 to 290
---
2
Carriage rail
The surface where the carriage unit slides
(2)
Floil KG107A
180 to 220
---
3
Carriage rail
The surface where the carriage unit slides
(3)
Floil KG107A
180 to 220
---
4
Main chassis
The surface where the carriage unit slides
(4)
Floil KG107A
230 to 290
---
5
Parallel pin
The pin surface which contacts the idler
pulley hole
(5)
Floil KG107A
9 to 18
1x1
6
APP code wheel
gear shaft
APP code wheel gear sliding portion (the
entire surface)
(6)
Floil KG107A
9 to 18
1x1
1 drop = 9 to 18 mg
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4-4. Special Notes on Servicing
(1) For smeared printing, uneven printing, or non-ejection of ink
When smeared printing, uneven printing, or non-ejection of ink occurs, print the nozzle check pattern to determine whether the
print head is faulty or not.
< Procedures >
0) Using the tool print head, confirm that the test printer (to be used to examine the print head in question) operates properly, then
install the print head in question in that test printer.
1) Print the nozzle check pattern (in the user mode or in the service mode).
2) If there is a missing portion in the printed pattern, perform the print head cleaning (2 times at the maximum), and print the
nozzle check pattern again.
3) If the problem persists even after the print head cleaning is performed 2 times, perform the print head deep cleaning, then print
the nozzle check pattern again.
4) If the problem is still not resolved, i) turn off the machine and leave it for 24 hours or longer, ii) perform the print head
cleaning, and iii) print the nozzle check pattern again.
5) If the problem still persists after steps 1) to 4), the print head may be faulty. Replace the print head.
(2) Paper feed motor adjustment
1) When attaching the motor, fasten the screws so that the belt is properly stretched (in the direction indicated by the blue arrow in
the photo below).
2) After replacement, be sure to perform the service test print, and confirm that no strange noise or faulty print operation (due to
dislocation of the belt or gear, or out-of-phase motor, etc.) occurs.
The screws securing the paper feed motor may be loosened only at replacement of the paper feed motor
unit. DO NOT loosen them in other cases.
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(3) Carriage unit replacement
To replace the carriage, the carriage rail must be removed from the main chassis (by removing the screws).
Before removing the screws, put a mark on the main chassis to indicate the carriage rail position.
After replacing the carriage, return the carriage rail to the original position while aligning the rail to the mark on the chassis.
(4) Document pressure sheet (sponge sheet) replacement
1) Peel off the cover sheet from the double-sided adhesive tape on the back of the document pressure sheet.
With the long-side down, position the upper-left corner of the document pressure sheet at the scanning reference point on the
platen glass (back left where the red lines cross in the photo above).
2) Slowly close the document pressure plate while maintaining the hinge position. The document pressure sheet will attach to the
plate frame.
3) Open the plate to confirm the following:
- No extension of the sponge edges over the mold part of the upper scanner cover.
- No gap between the platen glass reference edges and the corresponding sponge edges.
- No shades or streaks in monochrome test printing without a document on the platen glass.
(5) Ink absorber counter setting
Before replacement of the logic board, check the ink absorber counter value, and register it to the replaced new logic board. (The
value can be set in 10% increments.)
In addition, according to the ink absorber counter value, replace the ink absorber (ink absorber kit). When the ink absorber is
replaced, reset the applicable ink absorber counter (to 0%). See 4-2. Service Mode, for details.
<4-3. Grease Application & 4-4. Special Notes on Servicing>
49 / 54
MP640 / MP648 --- 4. ADJUSTMENT / SETTINGS
TABLE OF CONTENTS
4-5. Verification After Repair
(1) Standard inspection flow
In each step below, confirm that printing is performed properly and the machine operates properly without any strange noise.
EEPROM information print
<Check point>
- The information must be printed properly.
<Additional verification to be made> See 3-1. Major Replacement Parts.
- At logic board replacement
- At ink absorber replacement
- At platen unit or spur unit replacement
- At operation panel or LCD replacement
- At wireless LAN board replacement
Nozzle check pattern print
<Check point>
- The pattern must be printed properly. (The pattern can be printed in the user mode, or in the service
mode with the Service Tool version 1.05 or later.)
Copy function
<Check point>
- Copying must be performed properly.
<Additional verification to be made> See 3-1. Major Replacement Parts.
- At document pressure sheet or scanner unit replacement
Communication with a connected computer
<Check point>
- Via USB connection to the computer, printing from the computer must be performed properly
(paper feeding from the rear tray and from the cassette respectively).
<Additional verification to be made>
- For repair of a specific problem, confirm the applicable specific function in the user mode.
PictBridge, IrDA communication, Bluetooth communication, DVD / CD printing, LAN functionality,
Copy function, Scan function, Scan-to-Memory function, Card Direct printing
PictBridge,
IrDA, Bluetooth
DVD / CD printing
LAN / WLAN
Power-off in the service mode
<Check point>
- The paper lifting plate must be in the raised position.
External and internal appearance
<Check point>
- No grease, oil, or smearing on the timing slit strip film.
- No lifting of the platen ink absorber.
- No foreign material or dislocation of any part inside the machine.
- No damage or scratches that will affect the functionality.
Packaging
<Check point> See 5. MACHINE TRANSPORTATION.
- The carriage must be locked in the home position.
50 / 54
Copy,
Scan,
Scan-toMemory
Card Direct
(2) Service test print
<Service test print sample>
- First page:
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- Second page:
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(3) Ink absorber counter value print
<Print sample>
<4-5. Verification After Repair>
53 / 54
MP640 / MP648
TABLE OF CONTENTS
5. MACHINE TRANSPORTATION
This section describes the procedures for transporting the machine for returning after repair, etc.
1) In the service mode, press the ON button to finish the mode, and confirm that the paper lifting plate of the rear tray is raised.
2) Keep the print head and ink tanks installed in the carriage.
See Caution 1 below.
3) Turn off the machine by pressing the ON button to securely lock the carriage in the home position. (When the machine is turned
off, the carriage is automatically locked in place.)
See Caution 2 below.
(1) If the print head is removed from the machine and left alone by itself, ink (the pigment-based black
ink in particular) is likely to dry. For this reason, keep the print head installed in the machine even
during transportation.
(2) Securely lock the carriage in the home position, to prevent the carriage from moving and applying
stress to the carriage flexible cable, or causing ink leakage, during transportation. Make sure that the
carriage is locked in place at power-off.
- If the print head must be removed from the machine and transported alone, attach the protective cap (used when the
packing was opened) to the print head (to protect the print head face from damage due to shocks).
<5. MACHINE TRANSPORTATION>
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