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
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