Troubleshooting scan-quality issues, 201 | HP T2500 instruction

23 Troubleshooting scan-quality issues

●Random vertical lines

●Wrinkles or folds

●Line discontinuities

●Grain in area fills when scanning plain paper

●Small color differences between adjacent CIS modules

●Vertical light lines at the intersection between CIS modules

●Variable line thickness or missing lines

●Inaccurately reproduced colors

●Color fringing

●Clipping in dark or light areas

●Flare in the image when scanning glossy originals

●Vertical red and green bands over white or black background

●The stop-start effect

●Vibration

●Horizontal periodical banding

●Defocus, blurring and fading colors

●Incorrect paper advance, skew during scanning, or horizontal wrinkles

●Vertical black band 20 cm wide

●The scanner damages some originals

●Completely wrong colors

●Vertical distortion

●Object replication (ghosting)

●Clipping or incorrect scale factor when down-scaling in copies and prints

●Incorrect edge detection, mostly when scanning tracing paper

●A copied or scanned image is very skewed

In this chapter the most common defects and failure modes are shown, sorted by relevance and frequency of appearance. A defect is a common image artifact that usually appears when using any CIS scanner. These are

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HP T2500 manual Troubleshooting scan-quality issues, 201

Contents

Designjet T2500 eMultifunction Series Legal notices Table of contents Network configuration 103 151 121136 140 172 166182 201 200220 239 226230 236 250 247 Introduction Printer servicing Safety precautionsMains connection Printer operation HP Start-Up Kit Using this guideUse and maintenance Troubleshooting Index Accessories, support and specificationsPrinter models Glossary Printer’s main features Printer’s main features Front view Printer’s main components Printer’s main components Power switch Power socketRear view Communication ports Front panel Home screen dynamic icons Left and right fixed iconsFollowing items are displayed only on the home screen Information screen dynamic icons Sleep modeInformation screen To reach the information screen, press on the home screen Printer software Web ServicesPrinter software HP Designjet ePrint & Share Turn the printer on and off Printer’s internal prints To turn it back on, use the power switch at the rearPrinter’s internal prints Enww Installing the software Using IPv6 Network configurationConnect the printer to your network Your printer supports IPSec Using IPSecPrinter software installation Connect a computer to the printer by network Windows Bonjour connection Uninstall the printer software WindowsOpen the Mac OS X HP Designjet Installer Connect a computer to the printer by network Mac OS Click Continue TCP/IP connection Uninstall the printer software Mac OS Setting up the printer Introduction Set up your Web-connected printerWeb Services manual configuration Configure the printer’s Internet connection Configure firmware updates Scan to FTP folder Configure a scan-to-network or scan-to-FTP folderPrint quality Choose between Best, Normal, and Fast Scan to network folder Configure a scan-to-network or scan-to-FTP folder Check the Share this folder box Example Create a scan-to-network folder under Windows Example Create a scan-to-network folder under Mac OS Enww Paper mismatch action Roll switching optionsPreferences Paper options Roll switching options Paper suitability options Nest options Wait time Turn nesting on and off Each case, you must set the following options Turn usage information on and offTurn e-mail notifications on and off Turn alerts on and off To access alert settings under Mac OS Control access to the printerFront-panel security settings To access alert settings under Windows Disable your HP ePrint Center connection Embedded Web Server security settingsRequire account ID Set Windows driver preferences Network configuration Tools for preconfiguration Preconfigure network settings if requiredVerify correct operation Add the printer to your network system Troubleshooting Link configuration methods Reset network parameters Control network protocols Enable or disable network protocolsControl network protocols Front-panel menu items Dhcp Renew DHCPV6 Policy Front-panel menu items Ipsec Embedded services TCP/IPv4 Supported network protocols Personalizing the printer Personalizing the printer Access the Embedded Web Server Access the HP UtilityChange the language of the front-panel display Change the language of the HP Utility Change the sleep mode settingChange the auto-off setting Change the loudspeaker volume Change the front-panel display brightness Configure network settingsChange the units of measurement Select one of the following options Change the graphic language settingNetwork connectivity Gigabit Ethernet Modify configuration Manage printer security Change your printer’s email address Paper handling Paper handling Open the roll cover General adviceGeneral advice Load a roll onto the spindle Enww Load a roll onto the spindle Load a roll into the printer Load a roll into the printer Is not in the list on You may need to open the roll cover Quick procedure with paper on the rollFront panel procedure with paper on the roll Unload a roll Load a single sheet Stacker Manual printing with the stacker open Enww Basket Paper presetsView information about the paper Printing preferences Paper options Printing paper info Printing paper infoMove the paper Maintain paper Turn the automatic cutter on and off Press , then , then Setup Print retrieval Retrieval timeChange the drying time Change the retrieval time Feed and cut the paper Uses of a multiroll printer Working with two rollsHow the printer allocates jobs to paper rolls Economically on Roll switching policy doesnt matter Printing Print from a USB flash drive Then , then Print from USB preferences Advanced print settings Print from a computer using a printer driver Select paper size Select print qualityPaper size can be specified in the following ways Use the Windows printer driver Advanced print settingsUse Windows forms Use the Embedded Web Server Select margins optionsPrint on loaded paper Use the Mac OS X printer driver Change the treatment of overlapping lines Rescale a print Print a draft Preview a print You can specify high-quality printing in the following ways High-quality printing Print with no margins Print in gray shadesPrint with crop lines Nest jobs to save roll paper Use paper economically Nesting on Paper saved by nesting When does the printer try to nest pages? Paper options Roll protection Use ink economicallyRoll protection Unattended printing/overnight printing Print from iOS with AirPrint 1Recommended settings for unattended printing Print from iOS with AirPrint Paper types suitable for scanning ScanningScan to file Scan to file Then Scan preferences Preferences De-skew Off Copying Then Copy preferences Web-connected printing Web-connected printing Print through the Cloud with HP Designjet ePrint & Share Enable Cloud printing for your printer Print from a smartphone or tablet Print by email Enww View and print from the HP Designjet ePrint & Share website Enww Press the HP ePrint & Share icon Scan to an email address Press the Scan icon on the front panels home screen Sign in using your registered email address and password Enww Enww Share files in your Online Print History Web-connected printing 103 Job queue management Job preview Select when to print a job in the queueJob queue in the front panel Job queue Delete a job from the queue Pause a job in the queueReprint a job from the queue Save a scanned job to another destination Job queue in the Embedded Web Server or HP Utility Reprint or copy a job in the queue Printing Drying Cutting paper Ejecting Job status messages Empty job The job does not contain anything to print Canceled The job has been canceled by the printerCanceled by user Printed Color management Color management Summary of the color management process How colors are representedColor calibration Color management options Color management from printer drivers Printer emulation You can adjust the colors of your print as follows Color adjustment options Printing in grayscale You can adjust the gray balance of your print under Windows HP Professional Pantone Emulation Color management from printer drivers PostScript printers Cmyk color emulation Color emulation Submit Job options Color management from the Embedded Web Server Printing preferences Color options Color management from the front panel Color management and the scanner 121 Practical printing examples Print from Adobe Acrobat Print from Adobe Acrobat Print from Autodesk AutoCAD Print from Autodesk AutoCAD Enww Using clip contents by margins Using printer emulationPrint from Adobe Photoshop Enww Print and scale from Microsoft Office Using PowerPoint Enww Select File Page Setup Print Using Project Practical printing examples Using Excel Enww Enww Retrieving printer usage information Retrieving printer usage information Check usage statistics Get printer accounting informationCheck usage statistics for a job Accounting statistics with the Embedded Web Server Set Send accounting files to EnabledRequest accounting data by email Accounting statistics with the HP Utility Request accounting data by email Handling ink cartridges and printhead Handling ink cartridges and printhead Remove an ink cartridge HP Utility proceduresAbout the ink cartridges Check the ink cartridges status Insert an ink cartridge Insert an ink cartridge About the printhead Safe modeCheck the printhead status Remove the printhead Status, see Front-panel error messages on Enww Enww Lift the printhead out of the carriage Insert the printhead Insert the printhead Storage of anonymous usage information 151 Printer maintenance Move or store the printer Clean the exterior of the printerCheck printer status Maintain the ink cartridges Important notes Update the firmwareAutomatic firmware updates Manual firmware updates Printer maintenance kits Update the softwareSecure File Erase Security Disk Wipe Scanner maintenance Scanner maintenance Clean the scanner’s glass plate Enww Clean the pressure rollers and the feed rollers Replace the scanner’s glass plate Replace the scanner’s glass plate Enww Enww Enww To calibrate the scanner Calibrate the scannerIf calibration fails Supplies and accessories Supplies and accessories Following ink supplies can be ordered for your printer How to order supplies and accessoriesOrder ink supplies Order paper Roll paper 3Roll paper Following accessories can be ordered for your printer Introduction to the accessoriesOrder accessories PostScript Upgrade Spindle Spindle Adaptor Kit Troubleshooting paper issues Troubleshooting paper issues Unsuccessful sheet load Paper loading error messagesPaper cannot be loaded successfully Unsuccessful roll load Photo paper Black ink is easily removed when touchedPaper type is not in the list Transparent or translucent film Printer printed on the wrong paper type When is a job put on hold for paper?An on hold for paper message Paper has jammed in the print platen Paper has jammed in the print platen Enww Enww Paper has jammed in the stacker Print remains in the printer after printing has completed Printer displays out of paper when paper is availablePrinter reports unexpectedly that the stacker is full Prints do not fall neatly into the basket Troubleshooting print-quality issues Troubleshooting print-quality issues 183 When you have any print-quality problem Print-quality troubleshooting wizardRecalibrate the paper advance Recalibrating the paper advance procedure Horizontal lines across the image banding Return to default calibration Lines are too thick, too thin or missing Lines print double or in the wrong colors Lines appear stepped or jagged Lines are blurred Lines are discontinuous Whole image is blurry or grainy Line lengths are inaccurate Ink marks on the paper This problem can occur for several different reasonsPaper is not flat Print is scuffed or scratched Other smears on the paper Black ink comes off when you touch the print Vertical bands of different colors Edges of objects are stepped or not sharpEdges of objects are darker than expected Horizontal lines at the end of a cut sheet print Colors are inaccurate White spots on the print Image is incomplete clipped at the bottom Colors are fadingImage is clipped Some objects are missing from the printed image Image Diagnostics Print Image Diagnostics Print Corrective action If you still have a problemHere is an example of the same printhead in a bad state If you still have a problem Cannot access the network folder Troubleshooting scanner issuesScanning to file is slow 201 Troubleshooting scan-quality issues Actions Troubleshooting scan-quality issuesRandom vertical lines Wrinkles or folds Line discontinuities Grain in area fills when scanning plain paper Small color differences between adjacent CIS modules Vertical light lines at the intersection between CIS modules Inaccurately reproduced colors Variable line thickness or missing lines Clipping in dark or light areas Color fringing Clipping in dark or light areas Vertical red and green bands over white or black background Flare in the image when scanning glossy originalsStop-start effect Vibration Vibration Defocus, blurring and fading colors Horizontal periodical banding Defocus, blurring and fading colors Enww Original Scan affected by a CIS failing module Vertical black band 20 cm wide Completely wrong colors Scanner damages some originals Object replication ghosting Vertical distortion Incorrect edge detection, mostly when scanning tracing paper Copied or scanned image is very skewed Scanner diagnostic plot Scanner diagnostic plot Resolution Visual check for errors while printing the diagnostic sheet Alignment Loss of shadow or highlight details Maintenance Clean printheadsPrinter banding Scan Scan or copy the diagnostic plotStreaks Grain Monitor calibration Save the diagnostic plot for future useCopy Troubleshooting ink cartridge and printhead issues Troubleshooting ink cartridge and printhead issues Ink cartridge status messages Cannot insert an ink cartridgeCannot insert the printhead Align the printhead Clean the printhead On page 145 and Insert the printhead on Printhead status messages Troubleshooting general printer issues Troubleshooting general printer issues Printer does not print Printer will not start Communication failures between computer and printer Restore factory settingsPrinter seems slow Printer behaves strangely Cannot access the Embedded Web Server Cannot access the HP UtilityCannot connect to the Internet Alerts Web Services issues Automatic file system checkAll tests Alerts Options on Front-panel error messages Front-panel error messages 237 2Numerical error codes Using a USB flash drive System error logUsing the Embedded Web Server 239 HP Customer Care HP Start-Up Kit Introduction HP Professional ServicesHP Care Packs and Warranty Extensions HP Support Center Convenient, easy to use HP InstallationHP Proactive Support Customer Self Repair Contact HP Support How to contact HP Support 243 Printer specifications Printer specifications Functional specifications Scanner resolutions 200, 300, 600 ppi Physical specificationsFor a list of supported papers, see Order paper on Acoustic specifications Memory specificationsPower specifications Environmental specifications Glossary Hi-Speed USB FirmwareGamut Gigabit Ethernet Printhead PaperPlaten Printer driver Index Setup Paper size Print connectivity configUsage 137 Reset paper advance Specification 244 Speaker volume Status 141 Unit selection 229 Printhead cleaner Download presets Economical usePaper not in list 174 Presets Print on loaded paper 170 Power On/off 246 Printing resolutions Spindle Clean glass plate 157101 Network settings Sheet paper Load Sleep mode Slow printing 232 Smartphone Software Software update 154