Canon PIXMA MX870 Series Service Manual Download Page 36 | Manualshive

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(3) Printer unit removal, and ink absorber replacement

1) Separate the PictBridge chassis from the main PCB chassis. (1 screw)

2) Separate the main PCB chassis from the bottom case. (1 screw)

3) Separate the PCI DC and GND harnesses from the printer unit. (1 screw)

<The GND harness fits to the bottom case rib.>
See "

4-5. Special Notes on Servicing, (7) Power supply unit and modular board replacement

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Summary of Contents for PIXMA MX870 Series

Page 1: ...ght 2010 Canon U S A This technical publication is the proprietary and confidential information of Canon U S A which shall be retained for reference purposes by Authorized Service Facilities of Canon U S A Its unauthorized use is prohibited ...

Page 2: ...ment Procedures 1 External housing scanner unit and document cover removal 2 Operation panel and document feed unit removal 3 Printer unit removal and ink absorber replacement 4 Board 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 4 ...

Page 3: ... sheet replacement 5 Ink absorber counter setting 6 Ink absorber life estimation 7 Power supply unit and modular board replacement 8 Rating label on the bottom case except China 9 PTT label on the bottom case for New Zealand only 10 Speed Dial Utility 4 6 Verification After Repair 1 Standard inspection flow 2 Service test print 3 Ink absorber counter value print 5 MACHINE TRANSPORTATION TABLE OF C...

Page 4: ...on Position the paper feed motor so that the belt is stretched tight None 5 min N Automatic print head alignment At print head replacement At logic board replacement When print quality is not satisfying To secure the dot placement accuracy None Perform in the user mode 6 min Manual print head alignment At print head replacement At logic board replacement When print quality is not satisfying To sec...

Page 5: ...orrection is performed at the same time At logic board replacement At platen unit replacement To correct line feeding eject roller diameter Service Tool 1 Perform in the service mode Carriage rail position adjustment At carriage unit replacement At carriage unit removal To set the carriage rail to the original position prior to removal or replacement of the carriage unit put a mark on the main cha...

Page 6: ... 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 ca...

Page 7: ...sor error Paper feed problem 8 APP encoder sensor Detects the amount of rotation of the APP encoder Controls purging operation and paper feeding from the rear tray or from the cassette APP sensor error APP position error 9 LF encoder sensor Detects the amount of rotation of the LF encoder LF position error Uneven printing 10 Carriage encoder sensor Detects the position of the carriage Carriage pos...

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Page 10: ...erial 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 63 ...

Page 11: ... 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 Pick up arm unit Pressure roller unit Switch system unit Paper feed motor Paper jam 1300 The paper is jammed Clear the paper and press OK Remove the jammed paper or foreign material causing a paper jam paper remainings clips pens etc and press the OK button...

Page 12: ...nting Press the OK button to eject the 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 Duplex feed roller unit PE sensor board Logic board The remaining ink amount unknown raw ink present 1683 U130 Applicable ink tank icon The remaining level of the ink cannot be correctly detected An ink tank which has once bee...

Page 13: ...t in ADF Redo operation after checking document in ADF and pressing OK Remove the paper from the ADF and press the OK button DF unit No paper in the ADF 2802 No document in ADF Press OK and redo operation after setting document Press the OK button to clear the error DF unit Paper in the ADF is too long 2803 Document size is too long Redo operation after checking document on ADF and pressing OK Rem...

Page 14: ...An error occurred in the LF encoder signal 1 Opening and closing of the paper output tray the tray must be opened properly 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 moto...

Page 15: ...l 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 and confirm that the ink absorber right beneath the purge drive system unit stays in place and does not con...

Page 16: ...ink tanks are seated properly or re set the ink tanks properly 3 Part replacement Carriage unit Purge drive system unit ASF unit 22 times Scanner error 5011 An error occurred in the scanner 1 Document pressure sheet conditions 1 Cable connection 2 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 con...

Page 17: ...ax in the B W mode 099 TX RX Transmission terminated mid way by pressing the Stop Reset button 995 TX RX During TX sending Memory transmission reservation cancelled During RX receiving Image data received in the memory cleared Error code TX RX Meaning Solution Parts that are likely to be faulty 100 TX Re transmission of the procedure signal has been attempted the specified number of times but fail...

Page 18: ...ogic board 280 TX Re transmission of the procedure signal has been attempted the specified number of times but failed Try a higher transmission level 281 TX Re transmission of the procedure signal has been attempted the specified number of times but failed Try a higher transmission level 282 TX Re transmission of the procedure signal has been attempted the specified number of times but failed Try ...

Page 19: ...been received Try a higher transmission level 753 TX After transmitting PPS NULL in ECM transmission re transmission of the procedure signal has been attempted the number of specified times but failed or T5 time over 60 sec has occurred Increase the period of time of the T5 time over 754 TX After transmitting PPS NULL in ECM transmission re transmission of the procedure signal has been attempted t...

Page 20: ...transmission level of the receiving machine 772 TX After transmitting EOR NULL in ECM transmission DCN has been received Try a higher transmission level 773 TX After transmitting EOR NULL in ECM transmission re transmission of the procedure signal has been attempted the number of specified times but failed or T5 time over 60 sec has occurred Increase the period of time of the T5 time over 774 TX A...

Page 21: ...s been attempted the number of specified times but failed or T5 time over 60 sec has occurred Increase the period of time of the T5 time over 789 TX After transmitting EOR EOP in ECM transmission ERR has been received Try a higher transmission level 790 RX After receiving EOR EOP in ECM reception ERR has been transmitted Increase the transmission level of the sending machine 791 TX RX During the E...

Page 22: ... 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 DF unit for document scanning error PE sensor board Pressure roller unit Cassette unit Faulty scanning no scanning strange noise 1 Confirm cable connection scanner motor cable a...

Page 23: ...ming 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 ...

Page 24: ...igital camera PictBridge Absorber kit 15 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 Ink absorber See 3 2 Part Replacement Procedures 3 Printer unit removal Ink absorber replacement for details After replacement 1 Reset the ink absorber counter See 4 2 Service Mode for details Ink absorber counter value print Af...

Page 25: ...s 3 Document pressure plate unit 4 Scanner unit 5 Main case 6 Rear cover 7 Print unit 8 See 3 2 Part Replacement Procedures DO NOT contact the spur edges After replacement 1 Check the ink system function 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 ...

Page 26: ...right side covers 3 Document pressure plate unit 4 Scanner unit At replacement 1 Confirm the document pressure plate sheet position See 4 5 Special Notes on Servicing 4 Document pressure sheet replacement for details Service test print Document bottom cover Scanner unit LCD ass y 10 1 Panel cover 2 Operation panel 3 LCD ass y Be cautious not to scratch or damage the LCD cable At replacement 1 Perf...

Page 27: ... similar to that of the MX870 1 External housing scanner unit and document cover removal MX870 3 REPAIR TABLE OF CONTENTS 1 Remove the cassette and the rear guide unit no screws 2 Remove the AC adapter 1 screw Pull out the AC adapter from the bottom of the bottom case The core fits to the AC adapter rib See 4 5 Special Notes on Servicing 7 Power supply unit and modular board replacement 3 Remove t...

Page 28: ...4 Remove the scanner cable LCD cable document feeder harness panel ground harness and core 1 screw The core fits to the main case rib 25 63 ...

Page 29: ...5 Remove the side cover L disengage the scanner support then separate the scanner from the printer 4 screws 26 63 ...

Page 30: ...om the document feeder no screws 7 Remove the emblem Using a pair of tweezers etc push the emblem on the document feed cover side The double sided adhesive tape on the back of the emblem will remove making the emblem free 27 63 ...

Page 31: ...8 Remove the main case no screws 28 63 ...

Page 32: ... 2 Operation panel and document feed unit removal 1 Remove the feed tray panel cover right cover and rear cover no screws Be cautious not to damage the tabs and hooks 29 63 ...

Page 33: ...2 Remove the document feed cover 3 Remove the operation panel eject tray document feed switch and document feed unit 19 screws The core fits to the document feed base rib 30 63 ...

Page 34: ...31 63 ...

Page 35: ...4 Remove the LCD ass y no screws 5 Remove the panel board 11 screws 32 63 ...

Page 36: ...the main PCB chassis 1 screw 2 Separate the main PCB chassis from the bottom case 1 screw 3 Separate the PCI DC and GND harnesses from the printer unit 1 screw The GND harness fits to the bottom case rib See 4 5 Special Notes on Servicing 7 Power supply unit and modular board replacement 33 63 ...

Page 37: ...d as well as the printer unit from the bottom case ink absorbers can be replaced Some of the ink absorbers are under the paper separation slope When the ink absorbers are replaced confirm that the replaced new absorbers fit in place securely and they do not lift After replacement of the ink absorbers reset the ink absorber counter value to zero in the service mode See 4 2 Service Mode for details ...

Page 38: ... 4 Board removal 1 Remove the WLAN board card board main PCB modular board and main PCB chassis 15 screws The core fits to the rib of the harness guide 35 63 ...

Page 39: ...2 Remove the PE sensor board 5 screws 36 63 ...

Page 40: ... removal 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 1 Remove 1 screw from the left plate and 2 screws from the right plate 37 63 ...

Page 41: ...o 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 Using a pair of pliers etc release the left end of the pulley holder spring then remove the carriage belt Be cautious to keep it free from any grease 38 63 ...

Page 42: ...ain chassis Before removing the center screw remove the carriage cable holder from the front chassis After the 3 screws are removed slowly put down the carriage rail 5 Remove the carriage unit Be cautious that the grease will not attach to any parts 39 63 ...

Page 43: ...sensor and the middle front cover 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 40 63 ...

Page 44: ...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 41 63 ...

Page 45: ... 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 42 63 ...

Page 46: ...ler springs both the left and the right ones 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 43 63 ...

Page 47: ... 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 Fix the pressure roller unit to the main chassis screw it to the right and left plates 10 Attach the carriage unit and the carriage rail to align with th...

Page 48: ...intenance tab Set a sheet of plain paper A4 or Letter in the cassette or the rear tray if selected Then scan the printed pattern If the automatic print head alignment is not effective perform manual print head alignment Manual print head alignment Perform via the machine operation panel or from the MP driver Maintenance tab Set 3 sheets of plain paper A4 or Letter in the cassette or the rear tray ...

Page 49: ...nner connect the operation panel unit While holding the ON button press the Stop button 6 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 iv When the Power LED lights in green the machine is ready for the service mode operation Nothing is displayed on the LCD 2 Start the Service T...

Page 50: ... amount in the ink absorber USB serial number Destination EEPROM information Process inspection information Barcode model name destination Ink system function check result 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 Model name ROM version Ink absorber counter value ink amount in the ink absorbe...

Page 51: ...sheet of A4 or Letter sized plain paper After the ink absorber counter is reset the counter value is printed automatically Platen Platen ink absorber counter resetting Not used 12 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 rep...

Page 52: ...isplayed on the LCD 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 respectiv...

Page 53: ... the operation panel to see if every button functions properly 2 2 The LCD is divided into 40 segments representing each button The color of a segment corresponding to the pressed button changes to red 1 ON button 2 Stop button 3 Copy button 4 Fax button 5 Scan button 6 Card button 7 Setup button 8 Black button 9 Color button 10 Left cursor button 11 Right cursor button 12 Up cursor button 13 Down...

Page 54: ... The machine returns to be ready for selection of another function 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 ...

Page 55: ... and turn off the machine PTT parameter mode operation procedures 1 In the user mode press the SCAN button to enter the scan mode and press 9 7 6 9 2 The following message is displayed on the LCD BIT SWITCH menu 3 Each time the right or left cursor button is pressed the menu is changed NUMERIC PARAM menu Note Not used in servicing Note Not used in servicing Note Not used in servicing Note Not used...

Page 56: ...on to save the setting value 6 Press the ON button 2 NUMERIC PARAM 1 In the 2 NUMERIC PARAM menu the following screen is displayed 2 Each time the up or down cursor button or the OK button is pressed the SW changes from 01 to 60 Be cautious not to select the SW numbers which are not used in servicing The SW numbers used in servicing SW 01 02 04 to 09 16 to 24 26 27 30 31 41 42 The SW numbers not u...

Page 57: ... In the user mode press the SCAN button then press 9 7 6 8 2 The PTT parameter mode values are printed For the definition and description of each bit of the SW refer to the G3 Facsimile Service Data Service Handbook English QY8 13BC 010 PTT parameter print sample for the MX870 Japan model 4 3 PTT Parameter Mode 54 63 ...

Page 58: ...90 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 APP code wheel gear shaft APP code wheel gear sliding portion the entire surface 5 Floil KG107A 9 to 18 1 x 1 6 Parallel pin The pin surface ...

Page 59: ...e 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 pr...

Page 60: ... 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 ...

Page 61: ...culated using data of the printer installation date and the current ink counter value Data of the printer installation date is updated when the printer is connected to a computer Note 2 The ink absorber life is calculated based on the user s usage frequency of printing printed items etc before EEPROM information print i e before repair servicing It will vary according to the user s usage after EEP...

Page 62: ...case for New Zealand only When the bottom case is replaced be sure to attach the PTT label from the original bottom case to the replaced new one The PTT label is given to each printer unit respectively thus the label of one unit is valid only for that unit For this reason the label is not available as a service part 10 Speed Dial Utility Speed Dial Utility allows users to back up or edit the regis...

Page 63: ...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 wired wire...

Page 64: ... 2 Service test print Service test print sample unified inspection pattern print 61 63 ...

Page 65: ... 3 Ink absorber counter value print Print sample 4 6 Verification After Repair 62 63 ...

Page 66: ...nt 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 MX870 TABLE OF CONTENTS 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 install...

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