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mp628
Service Manual
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Canon mp628, MP620 Service Manual

MP620 / MP628 Service Manual
Revision 0
QY8-13BZ-000
COPYRIGHTc2008 CANON INC. CANON MP620 072008 XX 0.00-0
Scope
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 © 2008 by Canon Inc. CANON INC. Inkjet Device Quality Assurance Div. 2 451, 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. Serial Number Location
2. LIST OF ERROR DISPLAY / INDICATION
2-1. Operator Call Errors 2-2. Service Call Errors 2-3. Other Error Messages 2-4. Warnings 2-5. Troubleshooting by Symptom
3. REPAIR
3-1. Notes on Service Part Replacement 3-2. Special Notes on Repair Servicing
(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
3-3. Adjustment / Settings
(1) Paper feed motor adjustment (2) Document pressure sheet (sponge sheet) replacement (3) Grease application (4) Ink absorber counter setting (5) User mode (6) Service mode
A: Service mode operation B: LF / Eject correction C: Button and LCD test D: Ink absorber counter setting
3-4. Verification After Repair
(1) Standard inspection flow (2) Service test print (3) Ink absorber counter value print
4. MACHINE TRANSPORTATION
MP620 / MP628
1. MAINTENANCE
1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement
Consumables by Service Engineer
(1) Adjustment
MP620 / MP628 TABLE OF CONTENTS
Adjustment Timing Purpose Tool
Approx.
time
EEPROM initialization
- At logic board replacement To initialize settings
Service Tool
*1
Perform in the service mode.
1 min.
Destination settings (EEPROM settings)
- At logic board replacement To set destination.
Service Tool
*1
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
*1
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
*1
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.
Manual 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.
10 min.
Grease application - At carriage unit replacement
- At Easy-Scroll Wheel
replacement
To maintain sliding properties of the following items:
- Carriage rail
- Wheel base
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
*1
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) position adjustment
- At protection sheet
replacement
- At document bottom cover
replacement
- At scanner unit replacement
To maintain scanning accuracy, hold the sheet with the long side down, then fit its upper left corner to the platen glass reference mark (back left).
None. 1 min.
LF / Eject correction
- At logic board replacement
- At paper feed roller
replacement
To correct line feeding (LF roller diameter).
Service Tool
*1
Perform in the service mode.
5 min. (LF correction and Eject correction is performed
- At logic board replacement
- At platen unit replacement
To correct line feeding (eject roller diameter).
Service Tool
*1
Perform in the service mode.
1 / 44
N: New adjustment item *1: New Service Tool that operates only on 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.
at the same time.)
N
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.
LAN resetting - At logic board replacement
- At WLAN board replacement
To initialize the network setting. None.
Perform in the user mode.
- Machine buttons
- Host computer (IJ Network tool)
1 min.
Wired / Wireless LAN setting information display
- At confirmation of the network setting
To confirm the network setting. None.
Perform in the user mode.
- Machine buttons
- Host computer (IJ Network tool)
1 min.
- The red screws securing the paper feed motor may be loosened only at replacement of the paper feed motor unit.
- For print head alignment, perform the manual print head alignment using plain paper.
2 / 44
1-2. Customer Maintenance
1-3. Special Tools
Adjustment Timing Purpose Tool
Approx.
time
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.
LAN resetting When changing the network setting, etc. To return the LAN setting to
its original state.
- Machine buttons
- Computer (MP driver)
1 min.
Wired / Wireless LAN setting information display
When changing the network setting, etc. To confirm the LAN setting
information.
- Machine buttons
- Computer (MP driver)
1 min.
Name Tool No. Application Remarks
FLOIL KG-107A QY9-0057-000
To the carriage rail sliding portions, and Easy-Scroll Wheel base.
In common with the MP610, etc.
3 / 44
1-4. Serial Number Location
On 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>
4 / 44
2. LIST OF ERROR DISPLAY / INDICATION
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)
MP620 / MP628 TABLE OF CONTENTS
Error
Error codeU No.
Message on the LCD Solution
No paper in the rear tray.
[1000] --- Rear tray.
There is no paper. Load paper and press [OK].
Confirm that the rear tray is selected as the paper source. Set the paper in the rear tray, and 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 as the paper source. Set the paper in the cassette, and press the OK button. Note: Only plain paper can feed from the cassette.
Paper jam. [1300] --- The paper is jammed. Clear the
paper and press [OK].
Remove the jammed paper, and press the OK button.
Paper jam in the rear guide.
[1303] ---
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 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) properly, and confirm that the LED's of all the ink tanks light red.
Print head not installed, or not properly installed.
[1401] U051 Print head is not installed. Install the
print head.
Install the print head properly.
Faulty print head ID. U052 The type of print head is incorrect.
Install the correct print head.
Re-set the print head. If the error is not cleared, the print head may be defective. Replace the print head.
Print head temperature sensor error.
[1403]
Faulty EEPROM data of the print head.
[1405]
Multiple ink tanks of the same color installed.
[1681] 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 in a wrong position.
[1680] U072 Some ink tanks are not installed in
place.
Install the ink tank(s) in the correct position.
Warning: The ink absorber becomes almost full.
[1700,
1701]
--- Contact the support center or service center for ink absorber replacement. Press [OK] to continue printing.
Replace the ink absorber, and reset its counter. [See
3-3. Adjustment / Settings, (6) Service mode.]
Pressing the OK button will exit the error, and enable printing without replacing the ink absorber.
5 / 44
However, when the ink absorber becomes full, no further printing can be performed unless the applicable ink absorber is replaced.
The connected digital camera or digital video camera does not support Camera Direct Printing.
[2001] --- The device may be incompatible.
Remove the device and check the manual supplied with the connected device.
Remove the cable between the camera and the machine.
The remaining ink amount unknown (raw ink present).
[1683] U130 (Applicable ink tank icon)
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 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 not recognized. [1410
to
1419]
U150 The following ink tank cannot be
recognized. (Applicable ink tank icon)
A hardware error occurred in an ink tank (the ink tank LED is turned off). Replace the ink tank(s).
No ink (no raw ink). [1688] U163 Printer detected ink out condition of
the following ink. 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 is
connected. Remove the hub.
Remove the applicable USB hub from the PictBridge (USB) 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.
6 / 44
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) Smearing or scratches on the LF / EJ slit
film;
clean the LF / EJ slit film. (2) Foreign material or paper debris in the LF
drive;
remove foreign material. (3) Cable connection (4) 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
error
[5C00] An error occurred in the purge unit. (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
5 times ASF (cam) sensor
error
[5700] An error occurred in the ASF cam
sensor.
(1) Cable connection (2) Part replacement:
- ASF unit
- PE sensor board unit
- Logic board
6 times Internal temperature
error
[5400] The internal temperature is not
normal.
(1) Cable connection (2) Part replacement:
- Carriage unit
- Logic board
- Print head
7 times Ink absorber full [5B00,
5B01]
The ink absorber is supposed to be full. Message on the LCD:
Ink absorber full. Service required.
Error codes:
(1) Ink absorber condition (2) Part replacement:
- Ink absorber kit
(3) Ink absorber counter value in the EEPROM;
reset the ink absorber counter.
7 / 44
5B00: Main ink absorber is full (overseas). 5B01: Main ink absorber is full (Japan).
8 times Print head
temperature rise error
[5200] The print head temperature
exceeded the specified value.
(1) Print head condition (2) Cable connection (3) Part replacement:
- Print head
- Logic board
9 times EEPROM error [6800,
6801]
A problem occurred in reading from or writing to the EEPROM.
(1) Part replacement:
- Logic board
10 times VH monitor error [B200] The internal temperature exceeded
the specified value.
(1) Part replacement:
- Print head and logic board (Replace them at the same time.)
- Power supply unit
11 times Carriage lift
mechanism error
[5110] The carriage did not move up or
down properly.
(1) Foreign material or paper debris that
obstructs the carriage movement;
remove foreign material.
(2) Part replacement:
- Switch system unit
- Carriage unit
12 times APP position error [6A80] An error occurred in the APP motor. (1) Foreign material or paper debris around the
purge drive system unit;
remove foreign material.
(2) Foreign material or paper debris around the
ASF unit;
remove foreign material. (3) Cable connection (4) Part replacement:
- Purge drive system unit
- Logic board
14 times APP sensor error [6A90] An error occurred during paper
feeding or purging.
Paper feed cam sensor error
[6B10] An error occurred in the paper feed
cam sensor during paper feeding from the cassette, or the paper absorbing a large amount of ink jammed in the PF rear guide.
(1) Jammed paper in the PF rear guide (when a
large amount of ink was absorbed in the paper);
remove the jammed paper and foreign
material. (2) Foreign material or paper debris in the
cassette or in the PF rear guide;
remove foreign material. (3) Part replacement:
- PF pick-up unit
- Logic board
15 times USB Host VBUS
overcurrent
[9000] The USB Host VBUS is overloaded. (1) Part replacement:
- Logic board
16 times Pump roller sensor
error
[5C20] The pump roller position cannot be
detected.
(1) Cable connection (2) Part replacement:
- Purge drive system unit
19 times Ink tank position
sensor error
[6502] None of the ink tank position is
detected.
(1) Ink tank position;
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.
(1) Part replacement:
- Logic board
- WLAN board
21 times Drive switch error [C000] Drive was not switched properly. (1) Foreign material or paper debris in the drive
8 / 44
2-3. Other Error Messages
switch area;
remove foreign material. (2) Part replacement:
- Purge drive system unit
- ASF 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
Flatbed motor error [5012] An error occurred in the scanner
flatbed motor.
(1) Cable connection (2) Part replacement:
- Scanner unit
23 times Valve cam sensor
error
[6C10] The valve cam sensor was faulty at
power-on or when purging was attempted.
(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.
[See 3-3. Adjustment / Settings, (6) Service mode, for details.]
Message on the LCD Cause Solution
The selected paper cannot be fed from cassette. Change the paper source and press [OK].
The paper type being used is not supported for paper feeding from the cassette.
Change the paper source to the rear tray.
Cannot apply the following setting(s). Change the setting(s).
Settings made conflict each other. (e.g. Selecting borderless printing on plain paper)
Change the settings so that they will not conflict each other.
Device memory is full. Cannot continue process. Reduce the number of documents (photos, etc.) to scan or copy.
The memory is not sufficient to do the print job in copying.
Reduce the amount of data to be printed, or print from a computer.
Press [Color]. The Black button was pressed, but it is
invalid.
A temporary error. Press the Color button to continue the operation.
Press [Black]. The Color button was pressed, but it is
invalid.
A temporary error. Press the Black button to continue the operation.
There are no photos in memory card. Supported image files are not in the memory
card.
A temporary error.
- Confirm that supported image files are in the memory card.
- Images with double-byte characters used in the file name (or folder name) may not be recognized. Change the file (or folder) name so that it contains only single-byte alphanumeric characters.
- If images are edited on the computer, print them from the computer.
The value exceeds the number of copies you can print.
During selecting images or specifying the number of copies, the total print quantity
A temporary error. The last operation before the error is cancelled, and the total print
9 / 44
exceeds the prescribed value of 999. quantity returns to the value before the error.
Memory card is not set. Insert the card after checking the direction.
The memory card is not inserted in the slot properly.
Set a memory card properly.
DPOF information is not saved. DPOF print was selected in the menu, but no
DPOF files are contained in the memory card.
A temporary error. The LCD automatically returns to the display before the error occurrence.
The number of copies to print is not set. Input the number of copies using [+]/[-].
Printing was attempted with the print quantity left "0" (zero).
A temporary error. Specify the print quantity.
This layout is available only for A4 or
8.5"x11" (215x279).
In Layout print, "Mixed 1, 2, or 3" which is available only with A4 or Letter size paper is selected, but the paper size is not set to A4 or Letter.
A temporary error. The LCD automatically returns to the display before the error occurrence.
Cannot specify "stickers" and "half­side layout" together. Check markings on handwriting sheet.
The selected layout on the handwriting sheet is not supported for Stickers.
A temporary error. Press the OK button to clear the error. The LCD returns to the display before the error occurrence.
Change the setting after removing the card.
With a memory card inserted in the slot, change of the Read/Write attribute was attempted.
A temporary error. Remove the memory card, then change the Read/Write attribute.
The card is currently writable from PC. Set to [Not writable from PC].
With the memory card set to "Writable from PC," Card Direct printing operation was attempted from the menu.
A temporary error. Remove the memory card, change the memory card setting to Read-only, then perform Card Direct printing.
The paper size is not correct. Check the page size you have set.
Non-supported size of paper for Camera Direct printing via PictBridge connection is selected.
Cancel printing on the digital camera. Confirm the paper size, and print again.
Failed to scan Photo Index Sheet. Check orientation and position, and make sure platen and sheet are clean. <See manual>
The machine failed in scanning the Photo Index Sheet.
Press the OK button to clear the error. Confirm the following, then try again:
- Fill in all the circles on the Photo Index Sheet.
- Place the sheet in the correct orientation and position.
Failed to scan handwriting sheet. Check orientation and position, and make sure platen and sheet are clean.
The machine failed in scanning the handwritten Photo Index Sheet.
Failed to scan Photo Index Sheet. Check for missed and improper markings.
The machine scanned the Photo Index Sheet, but markings in the sheet were incorrect.
Press the OK button to clear the error. Confirm the following, then try again:
- Fill in all the circles on the Photo Index Sheet properly.
- Place the sheet in the correct orientation and position.
Failed to scan handwriting sheet. Check for missed and improper markings.
The machine scanned the handwritten Photo Index Sheet, but markings in the sheet were incorrect.
Failed to scan. Either document cannot be scanned or is not placed on the platen glass.
The machine failed in scanning the document for Fit-to-page copy.
Press the OK button to clear the error. Correct the settings, then try the operation again.
Cover is open. Close cover. The cover was opened during printing. Close the cover. The LCD returns to the
display before the error occurrence.
Scanner is not operating correctly. The CIS cannot detect the home position, or
the scanner unit warming-up is not performed properly at power-on.
Press the OK button to clear the error, and turn the machine off and on again. If the error still occurs, repair servicing is required.
10 / 44
2-4. Warnings
2-5. Troubleshooting by Symptom
Warning Message on the LCD Solution
Low ink "!" is indicated for an applicable ink tank icon in the
Status Monitor.
Since the ink will be used up soon, prepare for a new ink tank.
Print head temperature rise
If the print head temperature does not fall, the print head error will occur.
When the print head temperature falls, the error is automatically cleared. If the print head error is indicated, repair servicing is required.
Protection of excess rise of the print head temperature
If the print head temperature does not fall, the print head error will occur.
If the print head temperature exceeds the specified limit, an intermission is inserted during printing.
Restrictions on paper The current paper cannot be set. Change the size and
type.
Re-select the supported paper type and size.
USB cable not connected Set the PC to start scan. Connect the USB cable, then turn on the computer. Cancellation of image
select information
Reset the selected photo information? Yes No
- Select
Yes
, and press the OK button.
=> The image selection is cancelled, and the
LCD returns to the display before the message was displayed.
- Select No, and press the OK button. => The LCD returns to the display immediately
before the message was displayed.
Do you want to clear the image scanned from the photo? Yes No
Do you want to clear the scanned image and rescan? Yes No
Symptom Solution
Faulty operation 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. A portion of the LCD is not displayed. The display flickers.
(1) Confirm cable connection (LCD FCC and panel harness):
- Harness and connector conditions
- No cable breakage, etc.
(2) Replace the following item(s):
- LCD FFC
- LCD viewer unit
- Panel board
- Logic board
Paper feed problems (multi-feeding, skewed feeding, no feeding).
(1) Examine and remove any foreign material or paper debris. (2) Confirm the PF rear cover and the cassette conditions. (3) Confirm cable connection. (4) 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.
11 / 44
*1: Replace the print head only after the print head deep cleaning is performed 2 times, and when the problem persists.
(2) Replace the following item(s):
- Scanner unit
- Logic board
Unsatisfactory print quality No printing, or no color ejected.
Faint printing, or white lines on printouts. Uneven printing. Improper color hue.
(1) Confirm the ink tank conditions:
- Confirmation of the air-through of an ink tank
(proper removal of the orange tape)
- Re-setting of an ink tank
(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
Paper gets smeared. (1) Clean the inside of the machine.
(2) Perform bottom plate cleaning. (3) Perform paper feed roller cleaning.
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 printouts in the paper feed direction.
(1) Confirm that the LF / EJ slit film is free from smearing or
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
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
Network connection problem No printing. (1) Examine if printing is performed properly via USB
connection. (2) Confirm the network settings. (3) Replace the following item(s):
- Logic board (for wired / wireless LAN)
- WLAN board (for wireless LAN)
<2. LIST OF ERROR DISPLAY / INDICATION>
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