Canon mp628 Service Manual
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Canon mp628 Service Manual

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MP620 / MP628

Service Manual

Revision 0
QY8-13BZ-000
COPYRIGHTc2008 CANON INC. CANON MP620 072008 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 © 2008 by Canon Inc.
CANON INC.
Inkjet Device Quality Assurance Div. 2
451, Tsukagoshi 3-chome, Saiwai-ku, Kawasaki-shi, Kanagawa 212-8530, Japan

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Summary of Contents for Canon mp628

  • Page 1: Service Manual

    COPYRIGHTc2008 CANON INC. CANON MP620 072008 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.

  • Page 2: Table Of Contents

    MP620 / MP628 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.

  • Page 3: Maintenance

    MP620 / MP628 TABLE OF CONTENTS 1. MAINTENANCE 1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement Consumables by Service Engineer (1) Adjustment Approx. Adjustment Timing Purpose Tool time EEPROM - At logic board replacement To initialize settings 1 min.
  • Page 4 at the same time.) Carriage rail - At carriage unit replacement To set the carriage rail to the None. 1 min. position adjustment - 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.

  • Page 5: Customer Maintenance

    1-2. Customer Maintenance Approx. Adjustment Timing Purpose Tool time Manual print head - At print head replacement To ensure accurate dot - Machine 10 min. alignment - When print quality is not satisfying (uneven placement. buttons printing, etc.) - Computer (MP driver) Print head cleaning When print quality is not satisfying.

  • Page 6: Serial Number Location

    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...

  • Page 7: List Of Error Display / Indication

    MP620 / MP628 TABLE OF CONTENTS 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.
  • Page 8 However, when the ink absorber becomes full, no further printing can be performed unless the applicable ink absorber is replaced. The connected digital [2001] The device may be incompatible. Remove the cable between the camera and the camera or digital video Remove the device and check the machine.

  • Page 9: Service Call Errors

    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 Error...
  • Page 10 5B00: Main ink absorber is full (overseas). 5B01: Main ink absorber is full (Japan). 8 times Print head [5200] The print head temperature (1) Print head condition temperature rise exceeded the specified value. (2) Cable connection error (3) Part replacement: - Print head - Logic board 9 times...

  • Page 11: 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...
  • Page 12 exceeds the prescribed value of 999. quantity returns to the value before the error. Memory card is not set. Insert the card The memory card is not inserted in the slot Set a memory card properly. after checking the direction. properly.

  • Page 13: Warnings

    2-4. Warnings Warning Message on the LCD Solution Low ink "!" is indicated for an applicable ink tank icon in the Since the ink will be used up soon, prepare for a new Status Monitor. ink tank. Print head temperature If the print head temperature does not fall, the print When the print head temperature falls, the error is rise...
  • Page 14 (2) Replace the following item(s): - Scanner unit - Logic board Unsatisfactory print quality No printing, or no color ejected. (1) Confirm the ink tank conditions: Faint printing, or white lines on - Confirmation of the air-through of an ink tank printouts.

  • Page 15: Repair

    MP620 / MP628 TABLE OF CONTENTS 3. REPAIR 3-1. Notes on Service Part Replacement (and Disassembling / Reassembling) Service part Adjustment / settings Operation check Notes on replacement Logic board ass'y - Before removal of the logic board After replacement:...
  • Page 16 Spur unit - DO NOT contact the spur edges. After replacement: - EEPROM information print 1. Check the ink system function. - Service test print 2. Perform LF / Eject correction in the service mode. [See 3-3. Adjustment / Settings, (6) Service mode, for details.] Purge drive system unit...

  • Page 17: Notes On Service Part Replacement

    *1: General notes: - Make sure that the flexible cables and wires in the harness are in the proper position and connected correctly. See 3-2. Special Notes on Repair Servicing 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.
  • Page 18 MP620 / MP628 --- 3. REPAIR TABLE OF CONTENTS 3-2. Special Notes on Repair Servicing (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.
  • Page 19 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).> 17 / 44...
  • Page 20 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.> 18 / 44...
  • Page 21 5) Remove the main case and sub-case. 19 / 44...
  • Page 22 (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.
  • Page 23 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.> 21 / 44...
  • Page 24 5) Remove the panel board (10 screws). 6) Remove the Easy-Scroll Wheel from the panel board. <Be cautious not to touch the grease between the wheel base and the wheel.> 3-3. Adjustment / Settings, (3) Grease application. 22 / 44...
  • Page 25 (3) Cable wiring and connection 1) Wiring on the right side 2) Wiring of the ink sensor cable and the WLAN harness Bottom case and panel cover removed 3) Wiring on the left side. Hook the ground cable on the side of the bottom case. 23 / 44...
  • Page 26 (4) Emblem removal Push the emblem bottom to remove from the double-sided adhesive tape. (5) Carriage unlocking 1) Rotate the drive unit gear toward the back of the machine to unlock the carriage. Slide the carriage to the left (the opposite of the home position). (6) ASF unit removal 1) Remove 1 screw from the left plate, and 2 screws from the right plate.
  • Page 27 (7) Carriage unit removal 1) At first, 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 the film free from any grease or scratches. 25 / 44...
  • Page 28 3) Using a longnose pliers, release the left end of the pulley holder spring, and remove the carriage belt. Be cautious to keep the belt free from any grease. 4) Remove 3 screws that fix the carriage rail to the main chassis. Before removing the center screw, remove the carriage cable holder from the front chassis.
  • Page 29 (8) Spur unit and platen unit removal 1) Remove the ink sensor and the middle front cover from the front chassis. 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.
  • Page 30 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. 28 / 44...
  • Page 31 (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 pressure roller springs (both the left and the right ones).

  • Page 32: Special Notes On Repair Servicing

    3) Remove the screws that fix the units to the main chassis (2 on the right, 3 on the left). 4) Separate the main chassis from the switch system unit and the purge drive system unit. <3-2. Special Notes on Repair Servicing> 30 / 44...

  • Page 33: Adjustment / Settings

    MP620 / MP628 --- 3. REPAIR TABLE OF CONTENTS 3-3. Adjustment / Settings (1) 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).
  • Page 34 (3) Grease application 1) Printer unit Number of Drawing Grease Part name Where to apply grease / oil Grease drops x amount (mg) locations Floil 1 Carriage rail The surface where the carriage unit slides 270 to 330 KG107A Floil 2 Carriage rail The surface where the carriage unit slides 18 to 36...
  • Page 35 2) Operation panel, Easy-Scroll Wheel Grease Number of Drawing Part name Where to apply grease / oil Grease amount drops x (mg) locations Easy-Scroll Wheel Easy-Scroll Wheel sliding portions Floil KG107A 9 to 18 base 1 drop = 9 to 18 mg (4) 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.
  • Page 36 MP620 / MP628 --- 3. REPAIR TABLE OF CONTENTS (5) User mode Function Procedures Remarks Nozzle check pattern printing Perform via the machine operation panel, or from the Set a sheet of plain paper (A4 or Letter) in MP driver Maintenance tab.

  • Page 37: A: Service Mode Operation

    (6) Service mode <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.
  • Page 38 Name Function Remarks (1) Test Print Service test print Paper will feed from the rear tray. Service test print: - Model name - ROM version - Ink absorber counter value (ink amount in the ink absorber) - USB serial number - Destination - EEPROM information - Process inspection information...

  • Page 39: B: Lf / Eject Correction

    - 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, the machine returns to be ready for selection of another function ("Service Mode Idle" is displayed on the LCD).

  • Page 40: C: Button And Lcd Test

    <Button and LCD test> Confirm the operation after replacement of the operation panel unit, 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.
  • Page 41 4-3) Rotate the Easy-Scroll Wheel counterclockwise step by step. The LCD is divided into 16 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.

  • Page 42: D: Ink Absorber Counter Setting

    <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.

  • Page 43: Verification After Repair

    MP620 / MP628 --- 3. REPAIR TABLE OF CONTENTS 3-4. 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>...
  • Page 44 (2) Service test print <Service test print sample> 42 / 44...
  • Page 45 (3) Ink absorber counter value print <Print sample> <3-4. Verification Items> 43 / 44...
  • Page 46 MP620 / MP628 TABLE OF CONTENTS 4. 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.

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Mp620

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