Solve paper-feed problems, Wrong colors are printing | HP Pro L7400

Wrong colors are printing

Check the print settings

Make sure Print in Grayscale is not selected in the printer driver. For information on changing this setting, see Change print settings.

Check the printheads

Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any problem areas, and perform the recommended actions. For more information, see Print the print quality diagnostic page.

Printout shows bleeding colors

Check the ink cartridges

Make sure ink cartridges have not been tampered with. Refilling processes and the use of incompatible inks can disrupt the intricate printing system and result in reduced print quality and damage to the device or printhead. HP does not guarantee or support refilled ink cartridges. For ordering information, see HP supplies and accessories.

Check the printheads

Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any problem areas, and perform the recommended actions. For more information, see Print the print quality diagnostic page.

Colors do not line up properly

Check the printheads

Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any problem areas, and perform the recommended actions. For more information, see Print the print quality diagnostic page.

Check the graphics placement

Use the zoom or print preview feature of your software to check for gaps in the placement of graphics on the page.

Lines or dots are missing from text or graphics

Check the printheads

Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any problem areas, and perform the recommended actions. For more information, see Print the print quality diagnostic page.

Solve paper-feed problems

For information on resolving jams, see Clear a jam in the device.

Solve paper-feed problems

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HP Pro L7400 manual Solve paper-feed problems, Wrong colors are printing, Printout shows bleeding colors

Contents

HP Officejet Pro L7400 All-in-One series Page HP Officejet Pro L7400 All-in- One series Accessibility Safety informationCopyright information Hewlett-Packard Company notices Contents Scan Configure and manageCopy Maintain and troubleshoot Support and warranty HP supplies and accessories Regulatory information Device specifications Find other resources for the product Get startedResource Description Location Understand the device parts Printing supplies area Front view Label Back viewControl panel buttons and lights Description Recommended Connection information Install the duplexer Install the accessoriesInstall Tray To install the duplexer To install Tray Turn on accessories in the print driver Click Apply Changes To turn on accessories on Windows computersTo turn on accessories on Macintosh computers Use control panel menus Use the deviceControl-panel message types Status messages Error messages Change device settingsCritical error messages To change settings from the control panel Use the HP photo and imaging software Use the HP Solution Center Windows To open the HP Photosmart Software on a Windows computer Load originalsLoad an original on the scanner glass To load an original on the scanner glass Tips for selecting and using print mediaSelect print media Understand specifications for supported media Envelopes Media size TrayStandard media sizes Other media CardsPhoto media Capacity Understand supported media types and weightsTray Type Weight Paper 60 to 105 g/m2 Media Left Right Top Bottom Margin Load mediaSet minimum margins To load Tray 1 main tray To load Tray Follow these steps Configure traysWant to Print on special and custom-sized media To print a borderless document Windows Click Properties or SetupPrint borderless Open the Paper Type/Quality panel To print a borderless document Mac OS Change default settings for all future jobs Windows Change print settingsChange settings Mac OS To change the settings Guidelines for printing on both sides of a Print on both sides duplexingPerform duplexing To print manually on both sides of a page Windows To print automatically on both sides of a page Windows To print manually on both sides of a page Mac OSTo print automatically on both sides of a page Mac OS Open the Two-Sided Printing panel Cancel a print job Copy Change the copy settingsMake copies from the control panel To make a copy from the control panel Set the copy paper type Set the number of copiesSet the copy paper size Change copy speed or quality Paper type Control panel settingTo set the paper type for copies from the control panel To change the copy quality from the control panel To resize a document from the control panel Resize an original to fit onto letter or A4 paperCopy a legal-size document onto letter paper To adjust the copy contrast from the control panel Adjust the lightness and darkness of your copyEnhance blurred areas of your copy To copy a legal-size document onto letter paper Enhance light areas of your copy Cancel a copy jobTo copy a blurred document from the control panel To copy an overexposed photo from the control panel Scan an original Scan Edit a scanned original Scan from a TWAIN-compliant or a WIA-compliant programScan from a TWAIN-compliant program Scan from a WIA-compliant program Edit a scanned photo or graphic Change scan settingsCancel a scan job Manage the device Configure and manageWindows Mac OS Monitor the device Administer the deviceUse device management tools Toolbox tabs Toolbox WindowsOpen the Toolbox HP Printer Utility panels Information and Support panel HP Printer Utility Mac OS HP Instant Support Printer Settings panel MyPrintMileage Understand the self-test diagnostic Understand the self-test diagnostic Direct connection Configure the device Windows Share the device on a locally shared network Connect the device before installing the softwareTo connect the device Share the device on a locally shared network Configure the device Mac OSInstall the software for a direct connection To share the device among computers running Mac OS Uninstall and reinstall the softwareTo uninstall from a Windows computer, method To uninstall from a Windows computer, method Uninstall and reinstall the software Replace the ink cartridges Maintain and troubleshootSupported ink cartridges To replace the ink cartridges Maintain the printheads Check printhead health Print the print quality diagnostic Align the printheads Clean the printhead contacts manually Clean the printheadsTo clean the printhead contacts manually Calibrate the linefeed Maintain the printheads Chapter To replace the printheads Replace the printheads Store printing supplies Clean the scanner glass Clean the deviceTo clean the scanner glass Store ink cartridges Clean the exterior Troubleshooting tips and resourcesSolve printing problems Device is not responding nothing prints Error message appears on control-panel displayDevice shuts down unexpectedly Blank or partial page printed Device does not accept printheadDevice takes a long time to print Something on the page is missing or incorrect Placement of the text or graphics is wrong Poor print quality and unexpected printouts Check the page-orientation settingDevice prints half a page, then ejects the paper Check the media size Meaningless characters print Poor quality printouts Ink is not filling the text or graphics completely Ink is smearingOutput is faded or dull colored Colors are printing as black and white Wrong colors are printing Solve paper-feed problemsPrintout shows bleeding colors Colors do not line up properly Optional Tray 2 cannot be inserted Another paper-feed problem is occurringMedia is not supported for the printer or tray Media is not picked up from a tray No copy came out Solve copy problems Documents are missing or faded Copies are blankSize is reduced Copy quality is poor Copy defects are apparent Solve scan problems Part of the document did not scan or text is missing Scanner did nothingScan takes too long Text cannot be edited Error messages appearScanned image quality is poor Check the originals Scan defects are apparent Hardware installation suggestions Troubleshoot installation issuesSize is reduced Check the hardware connections Verify installation preliminaries Software installation suggestionsCheck the computer system Check the device to ensure the following To clear a jam Clear jamsClear a jam in the device Chapter Tips for avoiding jams Accessories HP supplies and accessoriesOrder printing supplies online Supplies HP media Printheads Support and warranty Hewlett-Packard limited warranty statement Before you call Obtain electronic supportObtain HP telephone support Support process If you have a problem, follow these stepsHP support by phone Phone support period Appendix B Support and warranty Placing a call After the phone support period Additional warranty options Call HP Korea customer support HP Quick Exchange Service Japan To remove ink cartridges before shipment Prepare the device for shipmentRemove the ink cartridges and printheads before shipment To remove the control-panel faceplate Remove the control-panel faceplateTo remove printheads before shipment Pack the device To pack the device Physical specifications Device specificationsProduct features and capacities Processor and memory specifications Device memory System requirementsOperating system compatibility Minimum requirements Copy specifications Print specificationsScan specifications Environmental specifications Electrical specifications Regulatory information FCC statement Toxic and hazardous substance table LED indicator statement Regulatory model number Declaration of conformity Environmental product stewardship program Appendix D Index Symbols/NumericsPage OCR Page Twain 114