HP Officejet Pro 8500A User Manual
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5.Before installing a printhead, shake the printhead up and down at least six times while the printhead is still in its packaging. 6.Remove the new printhead from its package, and then remove its orange protective caps. CAUTION: Do not shake printheads after the caps are removed. 7.Insert the printhead into its color-coded slot (the label on the printhead must match the label on the printhead latch). Press down firmly on the printhead to ensure proper contact. 8. Pull the printhead latch all the way forward, and then press down to ensure that the latch is engaged correctly. You might have to apply some pressure to engage the latch. 9. Close the top cover. 10. Wait while the printer initializes the printheads and prints the alignment pages. If the printer does not print the pages, start the alignment process manually. For more information, see Toaligntheprintheads. Solve print quality problems 107
Solve paper-feed problems Media is not supported for the printer or tray Use only media that is supported for the printer and the tray being used. For more information, see Mediaspecifications. Media is not picked up from a tray • Make sure media is loaded in the tray. For more information, see Loadmedia. Fan the media before loading. • Make sure the paper guides are set to the correct markings in the tray for the media size you are loading. Also make sure the guides are snug, but not tight, against the stack. • Make sure media in the tray is not curled. Uncurl paper by bending it in the opposite direction of the curl. • When using thin special media, make sure that the tray is completely loaded. If you are using special media that is only available in small quantities, try placing the special media on top of other paper of the same size to help fill the tray. (Some media is picked up more easily if the tray is full.) • If you are using thick special media (such as brochure paper), load media so that the tray is between 1/4 and 3/4 full. If necessary, place the media on top of other paper of the same size so that the stack height is within this range. Media is not coming out correctly • Make sure the output tray extender is fully extended; otherwise, printed pages may fall off the printer. • Remove excess media from the output tray. There is a limit to the number ofsheets the tray can hold. Pages are skewing • Make sure the media loaded in the trays is aligned to the paper guides. If needed, pull out the trays from the printer and reload the media correctly, making sure that the paper guides are aligned correctly. • Load media into the printer only when it is not printing. Chapter 9 108 Solve a problem
Multiple pages are being picked up • Fan the media before loading. • Make sure the paper guides are set to the correct markings in the tray for themedia size you are loading. Also make sure the guides are snug, but not tight, against the stack. • Make sure the tray is not overloaded with paper. • When using thin special media, make sure that the tray is completely loaded. If you are using special media that is only available in small quantities, try placing the special media on top of other paper of the same size to help fill the tray. (Some media is picked up more easily if the tray is full.) • If you are using thick special media (such as brochure paper), load media so that the tray is between 1/4 and 3/4 full. If necessary, place the media on top of other paper of the same size so that the stack height is within this range. • Use HP media for optimum performance and efficiency. Solve copy problems If the following topics do not help, see HPsupport for information about HP support. • Nocopycameout • Copiesareblank • Documentsaremissingorfaded • Sizeisreduced • Copyqualityispoor • Copydefectsareapparent • Theprinterprintshalfa page,thenejectsthepaper • Papermismatch No copy came out • Check the power Make sure that the power cord is securely connected, and the printer turned on. • Check the status of the printer •The printer might be busy with another job. Check the control-panel display for information about the status of jobs. Wait for any job that is processing to finish. • The printer might be jammed. Check for jams. See Clearjams. • Check the trays Make sure that media is loaded. See Loadmedia for more information. Solve copy problems 109
Copies are blank •Check the media The media might not meet Hewlett-Packard media specifications (for example, the media is too moist or too rough). See Mediaspecifications for more information. • Check the settings The contrast setting might be set too light. On the printer control panel, touch Copy , touch Lighter Darker , and then use the arrows to create darker copies. • Check the trays If you are copying from the automatic document feeder (ADF), make sure that the originals have been loaded correctly. For more information, see Loadanoriginalin theautomaticdocumentfeeder(ADF). Documents are missing or faded •Check the media The media might not meet Hewlett-Packard media specifications (for example, the media is too moist or too rough). See Mediaspecifications for more information. • Check the settings The quality setting of Fast (which produces draft-quality copies) might be responsible for the missing or faded documents. Change to the Normal or Best setting. • Check the original •The accuracy of the copy depends on the quality and size of the original. Use theCopy menu to adjust the brightness of the copy. If the original is too light, the copy might not be able to compensate, even if you adjust the contrast. • Colored backgrounds might cause images in the foreground to blend into the background, or the background might appear in a different shade. • If you are copying a borderless original, load the original on the scanner glass, not the ADF. For more information, see Loadanoriginalonthescannerglass. • If you are copying a photo, be sure to load it on the scanner glass as indicated by the icon on the scan bed. Size is reduced • The reduce/enlarge or other copy feature might have been set from the printer control panel to reduce the scanned image. Check the settings for the copy job to make sure that they are for normal size. • The HP software settings might be set to reduce the scanned image. Change the settings, if needed. See the onscreen Help for the HP software for more information. Chapter 9 110 Solve a problem
Copy quality is poor •Take steps to improve the copy quality •Use quality originals. • Load the media correctly. If the media is loaded incorrectly, it might skew, causing unclear images. See Mediaspecifications for more information. • Use or make a carrier sheet to protect your originals. • Check the printer •The scanner lid might not be closed correctly. • The scanner glass or lid backing might need cleaning. See Maintaintheprinter for more information. • The automatic document feeder (ADF) might need cleaning. See Maintainthe printer for more information. • Print a Print Quality Diagnostic Page. Check for nozzle health problems that can cause streaks, wrong colors, and other poor quality copy problems. For more information, see Printheadmaintenance. Copy defects are apparent •Vertical white or faded stripes The media might not meet Hewlett-Packard media specifications (for example, the media is too moist or too rough). See Mediaspecifications for more information. • Too light or dark Try adjusting the contrast and copy-quality settings. • Unwanted lines The scanner glass, lid backing, or frame might need cleaning. See Maintainthe printer for more information. • Black dots or streaks Ink, glue, correction fluid, or an unwanted substance might be on the scanner glass or lid backing. Try cleaning the printer. See Maintaintheprinter for more information. • Copy is slanted or skewed If you are using the automatic document feeder (ADF), check the following: •Make sure that the ADF input tray is not too full. • Make sure that the ADF width adjusters are snug against the sides of the media. • Unclear text •Try adjusting the contrast and copy-quality settings. • The default enhancement setting might not be suitable for the job. Check the setting and change it to enhance text or photographs, if needed. For more information, see Changecopysettings. • Incompletely filled text or graphics Try adjusting the contrast and copy-quality settings. Solve copy problems 111
•Large, black typefaces look splotchy (not smooth) The default enhancement setting might not be suitable for the job. Check the setting and change it to enhance text or photographs, if needed. For more information, see Changecopysettings. • Horizontal grainy or white bands in light-gray to medium-gray areas The default enhancement setting might not be suitable for the job. Check the setting and change it to enhance text or photographs, if needed. For more information, see Changecopysettings. The printer prints half a page, then ejects the paper Check the ink cartridges Make sure the correct ink cartridges are installed and the ink cartridges are not low on ink. For more information, see Printermanagementtools and UnderstandtheSelfTest DiagnosticPage. HP cannot guarantee the quality of non-HP ink cartridges. Paper mismatch Check the settings Verify that the loaded media size and type matches the control panel settings. Solve scan problems If the following topics do not help, see HPsupport for information about HP support. NOTE: If you are starting the scan from a computer, see the HP software Help for troubleshooting information. •Scannerdidnothing • Scantakestoolong • Partofthedocumentdidnotscanortextismissing • Textcannotbeedited • Errormessagesappear • Scannedimagequalityispoor • Scandefectsareapparent Scanner did nothing • Check the original Make sure that the original is loaded correctly. For more information, see Loadan originalonthescannerglass. • Check the printer The printer might be coming out of PowerSave mode after a period of inactivity, which delays processing a short while. Wait until the printer reaches the READY state. Chapter 9 112 Solve a problem
Scan takes too long •Check the settings •If you set the resolution too high, the scan job takes longer and results in larger files. To obtain good results, do not use a resolution that is higher than needed. You can lower the resolution to scan more quickly. • If you acquire an image through TWAIN, you can change the settings so that the original scans in black and white. See the onscreen Help for the TWAIN program for information. • Check the status of the printer If you sent a print or copy job before you tried to scan, the scan starts if the scanner is not busy. However, the printing and scanning processes share memory, which means that the scan might be slower. Part of the document did not scan or text is missing •Check the original •Make sure that you loaded the original correctly. For more information, see Loadanoriginalonthescannerglass. • If you scanned the document from the ADF, try scanning the document directly from the scanner glass. For more information, see Loadanoriginalonthe scannerglass. • Colored backgrounds can cause images in the foreground to blend into the background. Try adjusting the settings before you scan the original, or try enhancing the image after you scan the original. • Check the settings •Make sure that the input media size is large enough for the original that you are scanning. • If you are using the HP Printer Software, the default settings in the HP Printer Software might be set to automatically perform a specific task other than the one that you are attempting. See the onscreen Help for the HP Printer Software for instructions about changing the properties. Text cannot be edited •Check the settings •Make sure that the OCR software is set to edit text. • When you scan the original, make sure that you select a document type that creates editable text. If text is classified as a graphic, it is not converted to text. • Your OCR program might be linked to a word-processing program that does not perform OCR tasks. See the HP software Help for more information about linking programs. • Check the originals •For OCR, the original must be loaded into the ADF with the top forward and face-up. Make sure that you loaded the original correctly. For more information, see Loadanoriginalonthescannerglass. • The OCR program might not recognize text that is tightly spaced. For example, if the text that the OCR program converts has missing or combined characters, "rn" might appear as "m." Solve scan problems 113
•The accuracy of the OCR program depends on the image quality, text size, and structure of the original and the quality of the scan itself. Make sure that your original has good image quality. • Colored backgrounds can cause images in the foreground to blend too much. Try adjusting the settings before you scan the original, or try enhancing the image after you scan the original. If you are performing an OCR operation on an original, any colored text on the original does not scan well, if at all. Error messages appear •Unable to activate TWAIN source or An error occurred while acquiring the image • If you are acquiring an image from another device, such as a digital camera or another scanner, make sure that the other device is TWAIN-compliant. Devices that are not TWAIN-compliant do not work with the HP software provided with the printer. • If you are using a USB connection, make sure that you have connected the USB Device Cable to the correct port on the back of your computer. • Verify that the correct TWAIN source is selected. In the HP software, check the TWAIN source by selecting Select Scanner on the File menu. • Reload document and then restart job Touch OK on the printer control panel, and then reload the remaining documents in the ADF. For more information see Loadanoriginalonthescannerglass. Scanned image quality is poor The original is a second-generation photo or picture Reprinted photographs, such as those in newspapers or magazines, are printed by using tiny dots of ink that make an interpretation of the original photograph, which degrades the quality. Often, the ink dots form unwanted patterns that can be detected when the image is scanned or printed or when the image appears on a screen. If the following suggestions do not solve the problem, you might need to use a better-quality version of the original. • To eliminate the patterns, try reducing the size of the image after scanning. • Print the scanned image to see if the quality is better. • Make sure that the resolution and color settings are correct for the type of scan job. • For best results, use the scanner glass for scanning rather than the ADF. Text or images on the back of a two-sided original appear in the scan Two-sided originals can "bleed" text or images from the back side to the scan if the originals are printed on media that is too thin or too transparent. The scanned image is skewed (crooked) The original might have been loaded incorrectly. Be sure to use the media guides when you load the originals into the ADF. For more information, see Loadanoriginal onthescannerglass. Chapter 9 114 Solve a problem
The image quality is better when printed The image that appears on the screen is not always an accurate representation of the quality of the scan. •Try adjusting your computer monitor settings to use more colors (or levels of gray). On Windows computers, you typically make this adjustment by opening Display on the Windows control panel. • Try adjusting the resolution and color settings. The scanned image shows blots, lines, vertical white stripes, or other defects • If the scanner glass is dirty, the image produced does not have optimum clarity. See Maintaintheprinter for cleaning instructions. • The defects might be on the original and are not a result of the scanning process. Graphics look different from the original Scan at a higher resolution. NOTE: Scanning at high resolution can take a long time, and it can take up a large amount of space on your computer. Take steps to improve the scan quality • Use the glass to scan rather than the ADF. • Use high-quality originals. • Place the media correctly. If the media is placed incorrectly on the scanner glass, it might skew, which causes unclear images. For more information, see Loadan originalonthescannerglass. • Adjust the HP software settings according to how you plan to use the scanned page. • Use or make a carrier sheet to protect your originals. • Clean the scanner glass. See Cleanthescannerglass for more information. Scan defects are apparent • Blank pages Make sure that the original document is placed correctly. Place the original document face down on the flatbed scanner with the top-left corner of the document located in the lower-right corner of the scanner glass. • Too light or dark •Try adjusting the settings. Be sure to use the correct resolution and color settings. • The original image might be very light or dark or might be printed on colored paper. • Unwanted lines Ink, glue, correction fluid, or an unwanted substance might be on the scanner glass. Try cleaning the scanner glass. See Maintaintheprinter for more information. Solve scan problems 115
•Black dots or streaks •Ink, glue, correction fluid, or an unwanted substance might be on the scanner glass; the scanner glass might be dirty or scratched; or the lid backing might be dirty. Try cleaning the scanner glass and lid backing. See Maintaintheprinter for more information. If cleaning does not correct the problem, the scanner glass or lid backing might need to be replaced. • The defects might be on the original and are not a result of the scanning process. • Unclear text Try adjusting the settings. Make sure that the resolution and color settings are correct. • Size is reduced The HP software settings might be set to reduce the scanned image. See the HP printer software Help for more information about changing the settings. Solve fax problems This section contains fax setup troubleshooting information for the printer. If the printer is not set up correctly for faxing, you might experience problems when sending faxes, receiving faxes, or both. If you are having faxing problems, you can print a fax test report to check the status of the printer. The test fails if the printer is not set up correctly for faxing. Perform this test after you have completed setting up the printer for faxing. For more information, see Testfaxsetup. If the test fails, review the report for information on how to fix any problems found. For more information, see Thefaxtestfailed. • Thefaxtestfailed • ThedisplayalwaysshowsPhoneOffHook • Theprinterishavingproblemssendingandreceivingfaxes • Theprinterishavingproblemssendinga manualfax • Theprintercannotreceivefaxes,butcansendfaxes • Theprintercannotsendfaxes,butcanreceivefaxes • Faxtonesarerecordedonmyansweringmachine • Thephonecordthatcamewithmyprinterisnotlongenough • Colorfaxesdonotprint • Thecomputercannotreceivefaxes(FaxtoPCandFaxtoMac) The fax test failed If you ran a fax test and the test failed, review the report for basic information about the error. For more detailed information, check the report to see which part of the test failed, and then review the appropriate topic in this section for solutions to try. This section contains the following topics: • The"FaxHardwareTest"failed • The"FaxConnectedtoActiveTelephoneWallJack"testfailed Chapter 9 116 Solve a problem