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HP Color LaserJet 2550L User Manual

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    							Repetitive defects on the back
    Marks repeatedly appear at even intervals on the unprinted side of the page.
    ●Internal parts might have toner on them. The problem will likely correct itself after a few
    more pages.
    ●Clean the printer. See 
    Cleaning the printer.
    ●The fuser might be damaged. Contact HP Customer Care. See 
    HP customer care or the
    support flyer that came in the printer box.
    ●If the problem is not resolved, see 
    If the problem is not resolved.
    Misformed characters
    The printed page contains misformed characters.
    ●If characters are improperly formed so that they produce hollow images, the paper might
    be too slick of a paper, such as a photo, glossy, or coated paper. Use a different paper,
    such as high-quality paper intended for laser printers. See 
    Print-media specifications.
    ●If characters are improperly formed so that they produce a wavy effect, the laser
    scanner might need service. Verify that the problem also occurs on the Configuration
    page. If so, contact HP Customer Care. See 
    HP customer care or the support flyer that
    came in the printer box.
    ●If the problem is not resolved, see 
    If the problem is not resolved.
    ENWW Solving print-quality problems111
     
    						
    							Curl or wave
    The printed page is curled or wavy.
    ●Turn over the stack of paper in the tray. Also try rotating the paper 180 degrees in the
    input tray.
    ●Set the correct Type in the printer driver. Heavier paper might take longer to print.
    ●Open the rear output door to print to the straight-through paper path.
    ●Check the paper type and quality. Both high temperature and humidity will cause paper
    curl. Use a different paper, such as high-quality paper intended for laser printers. See
    Print-media specifications.
    ●If the problem is not resolved, see 
    If the problem is not resolved.
    Page skew
    Text or graphics are skewed on the printed page.
    ●Make sure that the paper or other print media is loaded correctly and that the media
    guides are not too tight or too loose against the stack. See 
    Loading trays.
    ●Check the paper type and quality. Use a different paper, such as high-quality paper
    intended for laser printers. See 
    Print-media specifications.
    ●If the problem is not resolved, see 
    If the problem is not resolved.
    112Chapter 7 Problem solvingENWW
     
    						
    							Wrinkles or creases
    The printed page contains wrinkles or creases.
    ●Make sure that paper is loaded properly.
    ●Turn over the stack of paper in the input tray, or try rotating the paper 180 degrees in the
    input tray.
    ●Open the rear output door to print to the straight-through paper path.
    ●Check the paper type and quality. Use a different paper, such as high-quality paper
    intended for laser printers. See 
    Print-media specifications.
    ●If the problem is not resolved, see 
    If the problem is not resolved.
    Toner scatter outline
    Toner appears around the printed characters.
    ●Small amounts of toner scatter are normal for laser printing.
    ●Turn over the stack of paper in the tray.
    ●Perform a calibration. See 
    Calibrating the printer.
    ●If large amounts of toner have scattered around the characters, the paper might have
    high resistivity. Use a different paper, such as high-quality paper intended for laser
    printers. See 
    Print-media specifications.
    ●If the problem is not resolved, see 
    If the problem is not resolved.
    ENWW Solving print-quality problems113
     
    						
    							Random image repetition
    If an image that appears at the top of the page (in solid black) repeats farther down the page
    (in a gray field), the toner might not have been completely erased from the last job. The
    repeated image might be lighter or darker than the field in which it appears.
    ●In your program, change the tone (darkness) of the field that the repeated image
    appears in.
    ●In your program, rotate the whole page 180 degrees to print the lighter image first.
    ●Change the order in which the images are printed. For example, have the lighter image
    at the top of the page, and the darker image farther down the page.
    ●If the defect occurs later in a print job, turn the printer off for 10 minutes, and then turn
    the printer on to restart the print job.
    ●If the problem is not resolved, see 
    If the problem is not resolved.
    If the problem is not resolved
    If the problem is not resolved, try these steps:
    1. Perform a cleaning and calibration. See 
    Cleaning the printer.
    2. Print the Configuration page and Supplies Status page again.
    ●If the pages print correctly, then the problem is with the program, computer, or
    printer driver. Go to the next step.
    ●If the pages do not print correctly, then the problem is with the printer itself. The
    problem might be the fuser. Contact HP Customer Care. See 
    HP customer care or
    the support flyer that came in the printer box.
    3. Change the Type setting in the printer driver, or change the print mode in the HP
    Toolbox. If this step does not help, go to the next step.
    4. If the problem persists, check the paper type and quality. (See 
    Print-media
    specifications.) Use a different paper, such as high-quality paper intended for laser
    printers. Coated and photo papers are not supported.
    5. Print to a different printer.
    ●If the page prints correctly, then the problem is with the printer driver. Uninstall the
    printer driver and reinstall it.
    ●If the page does not print correctly, the problem is with the program or the computer.
    See the documentation for the program or the computer.
    Solving issues with color documents
    This section describes issues that can occur when you print in color.
    114Chapter 7 Problem solvingENWW
     
    						
    							NoteWhenever you are experiencing color-related issues, calibrate the printer before trying any
    other steps. See 
    Calibrating the printer.
    Only black prints
    Missing or incorrect
    colorColor prints
    inconsistently
    Colors do not match
    Color pages have
    inconsistent finish
    Only black prints
    Only black is printing when the document should be printing in color.
    ●Color mode is not selected in your program or printer driver. Select color mode instead
    of grayscale mode.
    ●The correct printer driver is not selected in the program. Select the correct printer driver.
    ●The printer is not properly configured. Verify the printer configuration by printing a
    Configuration page. If no color appears on the Configuration page, contact HP Customer
    Care. See 
    HP customer care or the support flyer that came in the printer box.
    ENWW Solving print-quality problems115
     
    						
    							Missing or incorrect color
    One or more colors are not printing, or are inaccurate.
    ●Perform a calibration. See Calibrating the printer.
    ●You have changed the color settings manually. Return the color setting to Automatic.
    See 
    Changing the color settings.
    ●Make sure that the sealing tape has been completely removed from the print cartridge.
    ●Turn the printer off and then on again.
    ●Your print media does not meet the specifications for this printer. Use a different paper,
    such as a high-quality paper intended for laser printers. See 
    Print-media specifications.
    ●You are operating the printer in excessively humid conditions. Verify that the printer
    environment is within humidity specifications.
    ●A print cartridge might be low. Check the printer control panel, print a Supplies Status
    page, or view the HP Toolbox to see supplies status. (If you are using a non-HP
    cartridge, none of these sources will provide information about a low or empty print
    cartridge.) Replace the print cartridge if it is low or empty.
    Color prints inconsistently
    A color is printing inconsistently after you load a new print cartridge.
    ●Another print cartridge might be low. Check the supplies status lights or HP Toolbox to
    see if a print cartridge is low and replace it if necessary. If you are using a non-HP print
    cartridge, it might be low or empty but you will receive no indication.
    ●Print cartridges might be improperly installed. Remove the print cartridge for the color
    that is printing inconsistently and reinstall it.
    116Chapter 7 Problem solvingENWW
     
    						
    							Colors do not match
    The colors on the printed page do not match the colors as they appear on the screen.
    ●Perform a calibration. See Calibrating the printer.
    ●The colors on your computer monitor differ from the printer output. Try selecting Screen
    Match in the Color tab of the printer driver.
    ●Print the Configuration and Supplies Status pages to ensure that they print correctly. If
    not, the problem is with the printer.
    ●Try printing from a different program or one of the other printer drivers. For example, if
    you are using the PCL 6 printer driver, try the PS printer driver.
    ●Extremely light colors or extremely dark colors on screen are not printing. Your program
    might interpret extremely light colors as white or extremely dark colors as black. If so,
    avoid using extremely light or extremely dark colors.
    ●Other factors, such as the light or paper quality, are affecting the output. Use a different
    paper, such as a high-quality paper intended for laser printers. See 
    Print-media
    specifications and Using color.
    Color pages have inconsistent finish
    The finish on the printed color page is inconsistent.
    ●Use a smooth paper or print media, such as a high-quality paper made for laser printers.
    Generally, the smoother the paper, the better the results. Coated and photo papers are
    not supported. See 
    Print-media specifications.
    ENWW Solving print-quality problems117
     
    						
    							118Chapter 7 Problem solvingENWW
     
    						
    							A
    Accessories and ordering
    information
    The following list of accessories was current at the time of printing. Ordering information and
    availability of the accessories might change during the life of the printer. For the most current
    ordering information, visit the most appropriate of the following websites:
    ●North America: http://www.hp.com/go/ordersupplies-na
    ●Europe and Middle East: http://www.hp.com/go/ordersupplies-emea
    ●Asia Pacific countries/regions: http://www.hp.com/go/ordersupplies-ap
    ●
    Latin America: http://www.hp.com/go/ordersupplies-la
    ENWW119
     
    						
    							Supplies
    Product nameDescriptionPart number
    Black print cartridgeLife of 5,000 pages at 5
    percent coverage.Q3960A
    Cyan print cartridgeLife of 4,000 pages at 5
    percent coverage.Q3961A
    Yellow print cartridgeLife of 4,000 pages at 5
    percent coverage.Q3962A
    Magenta print cartridgeLife of 4,000 pages at 5
    percent coverage.Q3963A
    Cyan print cartridgeLife of 2,000 pages at 5
    percent coverage.Q3971A
    Yellow print cartridgeLife of 2,000 pages at 5
    percent coverage.Q3972A
    Magenta print cartridgeLife of 2,000 pages at 5
    percent coverage.Q3973A
    Imaging drumImaging drum life is 20,000
    pages if printing black only;
    5,000 pages if printing in color.
    Typical life is 6,000 to 8,000
    pages.Q3964A
    120Appendix A Accessories and ordering information ENWW
     
    						
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