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Canon printer PIXMA MX850 User Manual

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    107
    Routine Maintenance
    Routine Maintenance
    Replacing an Ink Tank
    This section explains the way to confirm the in k status and the procedure to replace ink tanks.
    When ink runs out or other errors occur, an error  message is displayed on the LCD to inform you of 
    the error. See “An Error Message Is Displayed  on the LCD” on page 133 and confirm how to handle 
    it.
    When printing from your computer, error mess ages appear on your computer screen as well.
    „Getting the Ink Status Information
    You can confirm the status of ink tanks in the following two ways:
    z“With the LCD of this Machine” on page 107
    z “With the Ink Lamps” on page 108
    z With the LCD of this Machine
    Make sure that the machine is turned on, then press the  COPY, FA X , SCAN , or MEMORY 
    CARD  button. The current ink level will be displayed on the LCD for a few seconds.
    (A) Confirm whether any sy mbols are displayed here.
    An error message may be displayed on the LCD during printing.
    Note
    z Be sure to install the ink tanks in the correct order indicated by the label on the Print Head Holder. The 
    machine will not print if an ink tank is installed in the incorrect position.
    z For information on the compatible ink tanks, see the back cover of this guide.
    z If printing becomes faint or white streaks appear despite sufficient ink levels, see “When Printing 
    Becomes Faint or Colors Are Incorrect” on page 114.
    Ink is low. You can continue printing for a while, but we recommend 
    you to have a new ink tank available.
    Ink may have run out. See ““The ink may have run out. Replacing the 
    ink tank is recommended.”” on page 133 and take appropriate action.
    Note
    The ink status information is also displayed on the screen that appears during printing.
    (A) 
    						
    							
    108Routine Maintenance
    zWith the Ink Lamps
    You can confirm the status of each ink tank by  the ink lamps. Open the Scanning Unit (Printer 
    Cover) of the machine to confirm how the ink lamps light or flash.
    z Ink lamp is on  
    The ink tank is correctly set and there is enough ink remaining to print.
    z Ink lamp is flashing  
    Flashing slowly (at around 3-second intervals) ......Repeats
    Ink is low. You can continue printing for a while, but we recommend you to have a new ink 
    tank available.
    Flashing quickly (at around 1-second intervals) ......Repeats
    The ink tank is inserted in the wrong position or it is empty. Ensure that the ink tank is in the 
    correct position as directed by the label on the  Print Head Holder. If the position is correct and 
    its lamp flashes, it is empty. Replace it with a new one.
    z Ink lamp is off  
    The ink tank is not set properly or the function for detecting the remaining ink level is 
    disabled.
    If the ink tank is not set properly, press the   ma rk on the ink tank until the tank clicks into 
    place. If it does not click into place, make  sure that the orange protective cap has been 
    removed from the bottom of the ink tank. See “Prepare the replacement tank.” on page 110.
    If the function for detecting the remaining ink level  is disabled, replace the ink tank with a new 
    one. See “Replacing Ink Tanks” on page 109.
    If the lamps are still off after reinserting the ink tanks, there has been an error and the 
    machine cannot print. Check the error message displayed on the LCD. See “An Error 
    Message Is Displayed on the LCD” on page 133. (B) Empty ink tank.
    Ink has run out. See ““The ink has run out. Replace the ink tank.”” on 
    page 134 and take appropriate action.
    (B) 
    						
    							109 Routine Maintenance
    „Replacing Ink Tanks
    When ink tanks run out of ink, replace them using the following steps.
    1Open the Scanning Unit (Printer Cover) and 
    the Paper Output Tray.
    (1)Make sure the machine is turned on.
    (2)Lift the Scanning Unit (Printer Cover) until it 
    stops.
    The Paper Output Tray will open automatically 
    and the Print Head Holder moves to the center.
    2Open the Inner Cover.
    Important
    Handling Ink
    zTo maintain optimal printing quality, we recommend the use of specified Canon brand ink tanks.
    Refilling ink is not recommended.
    zOnce you remove an ink tank, replace it immediately. Do not leave the machine with ink tanks 
    removed.
    zReplace empty tanks with new ones. Inserting partially used ink tanks may cause the nozzles to 
    clog. Furthermore, with such tanks, the machine will not be able to inform you when to replace 
    the tanks properly.
    zOnce an ink tank has been installed, do not remove it from the machine and leave it out in the 
    open. This will cause the ink tank to dry out, and the machine may not operate properly when it 
    is reinstalled. To maintain optimal printing quality, use an ink tank within six months of first use.
    zColor ink may be consumed even when printing a black-and-white document or when black-
    and-white printing is specified.
    Color ink is also consumed in Print Head Cleaning and Print Head Deep Cleaning, which may 
    be necessary to maintain the machine’s performance. When an ink tank is out of ink, replace it 
    immediately with a new one.
    Caution
    zIf the Document Cover is opened, you cannot 
    open the Scanning Unit (Printer Cover). Be 
    sure to open the Scanning Unit (Printer Cover) 
    with the Document Cover closed.
    zDo not hold the LCD.
    zDo not hold the Print Head Holder to stop or 
    move it.
    Important
    If the Scanning Unit (Printer Cover) is left open for 
    more than 10 minutes, the Print Head Holder 
    moves to the right side. Close and reopen the 
    Scanning Unit (Printer Cover) to return the holder 
    to the center.
    Caution
    Do not touch the metallic parts or other parts 
    inside the machine.
    (A)
    (A) Press the Open button to open the 
    Paper Output Tray if it does not open 
    automatically. 
    						
    							
    110Routine Maintenance
    3Remove the ink tank whose lamp is flashing fast.
    (1)Push the tab and remove the ink tank.
    4Prepare the replacement tank.
    (1)Remove the new ink tank from its packaging.
    (2) Pull the orange tape (C) in the direction of the 
    arrow to peel off the protective film.
    (3) Remove the film (D) completely.
    (4) Remove the orange protective cap from the 
    bottom of the ink tank.
    Discard the cap once it is removed.
    Important
    zHandle ink tanks carefully to avoid staining 
    clothing or the surrounding area.
    z Discard empty ink tanks according to the local 
    laws and regulations regarding disposal of 
    consumables.
    NotezDo not remove more than one ink tank at a 
    time. Be sure to replace ink tanks one by one 
    when replacing more than one ink tank.
    z For details on ink lamp flashing speed, see 
    “Getting the Ink Status Information” on 
    page 107.
    Important
    Make sure that the protective film does not remain 
    on the air hole (E). If the air hole is blocked with 
    the remaining film, ink may leak out or may not 
    eject properly.
    Important
    zDo not touch the electrical contacts (G) on the ink 
    tank. Doing so can cause the machine to 
    malfunction or become unable to print.
    z Be sure to remove the clear film from the ink tank in 
    the exact order shown above, as failure to follow 
    this step may cause the ink to leak and stain your 
    clothes and hands.
    z Do not squeeze the side of ink tanks as this may 
    cause the ink to leak out and stain your clothes and 
    hands.
    z Be careful not to stain your clothes and hands with 
    ink on the removed protective cap.
    z Do not reattach the protective cap once you have 
    removed it. Discard it according to the local laws 
    and regulations regarding disposal of consumables.
    z Do not touch the open ink port once the protective 
    cap is removed, as this may prevent the ink from 
    being ejected properly. 
    (B)
    (B) Do NOT touch the Print Head Lock 
    Lever; remove only the ink tank.
    (D) (C)
    (E)
    (F) (G)
    (F) Carefully hold the protective cap 
    when removing it to prevent the ink 
    from staining your fingers. 
    						
    							111 Routine Maintenance
    5Install the ink tank.
    (1)Insert the front end of the ink tank into the Print 
    Head.
    (2)Press on the   mark on the ink tank until the 
    ink tank snaps firmly into place.
    (3)Make sure that the ink lamp lights up red.
    6Close the Inner Cover.
    Important
    Install all the ink tanks to print. The machine cannot be 
    used unless all the ink tanks are installed.
    Note
    Make sure that the Inner Cover is closed. Printing will 
    not start with the Inner Cover open since paper cannot 
    be fed properly.
    (1)
    (H)
    (H) Make sure the position of the tank 
    matches the label.
    (2) (3) 
    						
    							
    112Routine Maintenance
    7Gently close the Scanning Unit (Printer Cover).
    CautionzBe sure to hold the Scanning Unit (Printer Cover) firmly using both hands, and be careful not to 
    get your fingers caught.
    z Do not hold the LCD.
    Note
    zIf the error message is still displayed after the Scanning Unit (Printer Cover) is closed, see “An 
    Error Message Is Displayed on the LCD” on page 133.
    z When you start printing after replacing the ink tank, Print Head Cleaning is performed 
    automatically. Do not perform any other operations until Print Head Cleaning finishes. Wait until 
    you cannot hear the operation noise. 
    						
    							
    113
    Routine Maintenance
    Keeping the Best Printing Results
    To avoid drying of the Print Head and cl ogging of the nozzles, note the following.
    „When You Turn Off the Machine
    Follow the procedure below to turn off the machine.
    (1) Press the  ON/OFF button to turn off the machine.
    (2) Confirm that all the lamps on  the Operation Panel have gone out.
    This takes a few seconds or as long as around 1 minute. 
    (3) Unplug the power cord from the wall outlet.
    If you are using a power outlet strip, you can switch it off instead.
    When you press the  ON/OFF button to turn off the machine, the machine automatically puts a 
    protective cap on the Print Head to prevent the ink from drying. If you remove the power cord or 
    switch off the power outlet strip before all the lamps on the Operation Panel go out, this capping 
    will not be done properly, causing the Print Head to dry and clog.
    „ When You Are Not Using the Machine for a Long Time
    When you are not using the machine for a long time , print or copy in both black & white and in 
    color, or perform Print Head Cleaning, about once a month to prevent degradation of the Print 
    Head.
    Numerous nozzles are installed in the Print  Head for high-precision printing. Just as the 
    uncapped tip of a ballpoint pen or marker becomes  dry and unusable if it is not used for a long 
    period of time, the print head nozzles become bl ocked by dried ink. Periodically printing or 
    cleaning the Print Head can prevent this blockage.
    If you have not used the machine for a long time,  print out the nozzle check pattern to check the 
    print head condition before printing. See “Printing the Nozzle Check Pattern” on page 115.
    Note
    z Ink may blur depending on the paper in the following cases:
    – Printed area is traced with a highlight pen or paint-stick
    – Printed area is stained with water or sweat
    z If the print head nozzles get clogged, printouts will become faint or particular colors will not be printed 
    properly. For details, see “When Printing Becomes Faint or Colors Are Incorrect” on page 114. 
    						
    							
    114Routine Maintenance
    When Printing Becomes Fain t or Colors Are Incorrect
    When printing becomes faint or colors are incorrect  even if ink remains in the ink tanks, the print 
    head nozzles are probably clogged. Print the nozzle c heck pattern to confirm the condition of the 
    nozzles and then perform Print Head Cleaning.
    If print results are not satisfactory, performing Print Head Alignment may improve print quality.
    z If the Ruled Lines Are Shifted
    Note
    Before performing maintenance
    zOpen the Scanning Unit (Printer Cover) and make sure that all lamps for the ink tanks are lit red.
    If not, see “Getting the Ink Status Information” on page 107 and take the appropriate action.
    z Increase the  Print Quality  setting in the printer driver settings.
    For details, refer to the  PC Printing Guide on-screen manual.
    Step 1
    See “Printing the Nozzle Check Pattern” on page 115.
    If lines are missing or if white streaks appearAfter cleaning the 
    Print Head, print 
    and examine the  nozzle check  pattern.
    Step 2
    See “Print Head Cleaning” on page 117.
    If the problem is not resolved after performing 
    Print Head Cleaning twice
    Step 3
    See “Print Head Deep Cleaning” on page 118.
    Note
    If Print Head Deep Cleaning does not resolve the problem, turn off the machine and perform another Print 
    Head Deep Cleaning after 24 hours. If the problem is still not resolved, the Print Head may be damaged. 
    Contact your Canon service representative.
    See “Aligning the Print Head” on page 119.
    Note
    You can also perform the maintenance operation from your computer. For details, refer to the  PC Printing 
    Guide  on-screen manual. 
    						
    							
    115
    Routine Maintenance
    Printing the Nozzle Check Pattern
    Print the nozzle check pattern to determine whet her the ink ejects properly from the print head 
    nozzles.
    1Make sure that the machine is turned on,  and then load a sheet of A4 or Letter-
    sized plain paper in the Rear Tray or Cassette.
    2Open the Paper Output Tray, and then open the Output Tray Extension.
    (1) Press the Open button to open the Paper Output Tray.
    (2) Open the Output Tray Extension.
    3Press the  Feed Switch  to select the paper source where you have loaded paper.
    4Print the nozzle check pattern.
    (1)Press the  Menu button.
    (2) Use the  [ or  ] button to select  Maintenance/settings , then press the OK button.
    The  Maintenance/settings  screen is displayed.
    (3) Use the  [ or  ] button to select  Maintenance, then press the  OK button.
    The  Maintenance  screen is displayed.
    (4) Use the  { or  }
     button to select  Nozzle 
    check , then press the  OK button.
    The pattern print confirmation screen is 
    displayed.
    (5) Use the  { or  }
     button to select  Ye s, then press the  OK button.
    The nozzle check pattern is printed, and the  pattern confirmation screens are displayed 
    alternately.
    5Examine the pattern and take the appropriate action.
    See “Examining the Nozzle Check Pattern” on page 116.
    Note
    Make sure that the Inner Cover is closed. 
    						
    							
    116Routine Maintenance
    Examining the Nozzle Check Pattern
    Examine the nozzle check pattern,  and perform cleaning if necessary.
    1Check the nozzle check pattern you printed.
    (1)Check if lines in this pattern are missing.
    (A) Good
    (B) Lines are missing
    (2) Check if there are white streaks in this pattern.
    (A) Good
    (B) White streaks present
    2The confirmation screens for white streaks and missing lines are displayed 
    alternately. Select the pattern that is closer to the nozzle check pattern that you 
    printed.
    Note
    If the ink level is low, the nozzle check pattern is not printed correctly. Replace the relevant ink tank. See 
    “Replacing an Ink Tank” on page 107.
    (1)
    (2)
    (A) (B)
    (A) (B) 
    						
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