Scan problems, Solving scanned image problems | HP 2820, 2840, 2830

Scan problems

This section helps you identify and resolve scanning problems.

Solving scanned image problems

Use the table below to solve image-scan issues.

Problem

The scanned image is of poor quality.

Cause	Solution
The original might be a second-	● To eliminate the patterns,
generation photo or picture.	try reducing the size of the
	image after scanning.

The image that appears on the screen might not be an accurate representation of the quality of the scan.

The original might have been loaded incorrectly.

●Print the scanned image to see if the quality is better.

●Verify that your resolution and color settings are correct for the type of scan job that you are performing. See Scanner resolution and color.

●For best results, use the flatbed scanner for scanning rather than the automatic document feeder (ADF).

●Try adjusting your computer monitor settings to use more colors (or levels of gray). Typically, you make this adjustment by opening Display in Windows Control Panel.

●Try adjusting the resolution and color settings in the scanner software. See Scanner resolution and color.

Use the media guides when you load the originals into the ADF. See To load originals into the automatic document feeder (ADF).

The scanner might be dirty.	Clean the scanner. See To
	clean the scanner glass.
The graphics settings might not	Try changing the graphics
be suitable for the type of scan	settings. See Scanner
job that you are performing.	resolution and color.

ENWW	Scan problems 247

Image 263

HP 2820, 2840, 2830 manual Scan problems, Solving scanned image problems, Cause Solution

Contents

HP Color LaserJet 2820/2830/2840 Page User Guide Copyright and License Trademark Credits Page Customer self-repair Service and supportHP direct ordering for accessories or supplies Software help HP service informationHP service agreements HP Toolbox Table of contents Viii Printing Fax Scan Photo Xii Managing the device and maintenance Xiii Managing supplies Xiv Appendix a Accessories and ordering information Device basics Using the device Quick access to device informationWhere to look for more information Setting up the device Quick access to device information HP Color LaserJet 2830 all-in-one Device configurationsHP Color LaserJet 2820 all-in-one HP Color LaserJet 2840 all-in-one Device features Supplies Energy savingsEconomical printing Online user guide that is compatible with Back view Device partsFront view Interface ports HP Color LaserJet 2820 all-in-one printer, scanner, copier Control panel Enww Software HP Color LaserJet 2820/2830/2840 all-in-one software Printer driversSoftware and supported operating systems Software tips How do I gain access to the device features? Printer drivers Software for WindowsHow do I get the latest printing software? What other software is available? PPDs Mac OS Software for MacintoshHP Toolbox HP Director Embedded Web server EWS Software installationTypical installation Minimum installation Double-clickAdd or Remove Programs Uninstalling the printing softwareUsing Add or Remove Programs to uninstall Uninstalling software for Macintosh Media specifications General guidelines Media Dimensions Weight Capacity Supported media weights and sizesTray 1 specifications Automatic document feeder ADF paper sizes Optional tray 2 specificationsMedia Dimensions Weight or thickness Capacity Printing and storage environment Enww Using the device To load tray Loading traysLoading tray To load optional tray Loading optional tray To load originals onto the flatbed scanner Loading documents to scan To load originals into the automatic document feeder ADF Changing the device control-panel display language Using the device control panelChanging the default media size To change the default paper tray type Using the device volume controlsChanging the default paper tray configuration To change the default paper tray size To change the ring volume of the fax To change the alarm volumeTo change the volume for the fax To change the device control panel key-press volume Enww Printing To print from Windows Printing from Windows To print from the Macintosh OS Printing from the Macintosh OS Selecting a type or size Using the PCL printer-driver Help Windows onlySelecting a source Printing multiple pages on one sheet of paper N-up printing Creating and using watermarksCreating and using Quick Sets Printing in grayscale Reducing or enlarging Fit to Maximizing print speed for letter-size paper Selecting an output location Setting a custom paper size Preprinted forms and letterhead Printing on special mediaGlossy paper Colored paper Heavy paper Envelopes Transparencies HP LaserJet Tough paperLabels Printing on different paper for the first To duplex manually Printing on both sides duplexing manually On the Finishing tab, select Print on Both Sides Printing bookletsTo print booklets Enww Canceling a print job Enww Printing with color Changing the color settings HP ImageREt Using colorMedia selection Manual color options Automatic versus Manual color adjustmentManaging color options Print in Grayscale RGB Color Halftone optionsNeutral Grays Matching colors Copy Starting a copy job Canceling a copy job To adjust the default copy quality Adjusting the copy qualityTo adjust the copy quality for the current job To adjust the default lighter/darker setting Adjusting the lighter/darker contrast settingTo adjust the lighter/darker setting for the current job Reducing or enlarging copies To reduce or enlarge copies for the current job To change the default copy size To change the default copy-collation setting Changing the copy-collation setting To change the number of copies for the current job To change the default number of copiesChanging the number of copies To copy a multiple-page stack of two-sided originals Copying photos, two-sided originals, or booksTo copy a photo To copy a book Fax Changing the silence-detect mode To enter text from the control panel Specifying the fax settings To set the fax header To set the time and date To send a fax to one recipient To adjust the resolution for the current fax jobSending faxes To send a fax to multiple recipients To send a fax by using a group-dial entry To send a fax to a group manually ad hoc faxing To use manual dial with the flatbed scanner Using manual dialTo use manual dial with the automatic document feeder ADF To redial manually Redialing manually To cancel a fax job by using the Fax Job Status Canceling a fax jobTo cancel the current fax job To send a fax from the software Mac OS 10.2 or Sending faxes by using the softwareTo send a fax from the software Windows 2000 or XP Fax Receiving faxes To receive faxes when you hear fax tones To send a fax by dialing from a telephone Sending a fax by dialing from a telephone To change the default light/dark contrast setting Changing the default light/dark contrast setting To change the default resolution setting Changing the default resolution setting To change the default glass-size setting Changing the default glass-size setting To select tone-dialing or pulse-dialing Selecting tone-dialing or pulse-dialing mode To change the redial-on-no-answer option Changing the redial settingsTo change the redial-on-communication-error option To change the redial-on-busy option Receiving faxes to your computer To turn off the receive-to-PC setting from the control panel To set the answer mode Setting the answer mode To change ring patterns for call answering Changing ring patterns for call answering To set the number of rings-to-answer Changing the rings-to-answer settingUsing the rings-to-answer setting Recommended rings-to-answer setting To change autoreduction for incoming faxes Changing autoreduction settings for incoming faxes To block or unblock a fax number Blocking or unblocking fax numbers To program speed-dial entries and one-touch keys To manage group-dial entries To delete speed-dial entries and one-touch keysTo program speed-dial entries or one-touch keys quickly To delete group-dial entries To program group-dial entries To delete all phone book entries To delete an individual from a group-dial entry Button number Characters Using dialing charactersTo insert a pause To set the dial prefix Inserting a dial prefix To send a delayed fax Sending a delayed fax To change the detect-dial-tone setting Changing the detect-dial-tone setting To use billing codes Using billing codesTo change the billing-code setting To reprint a fax To change the fax reprint settingsReprinting a fax To delete faxes from memory Deleting faxes from memory To use fax forwarding Using fax forwarding To make an extension telephone available to receive faxes Making an extension telephone available to receive faxes To poll request a fax from another fax machine Using fax polling To change the silence-detect mode Changing the silence-detect mode To make stamp-received faxes available Creating stamp-received faxes To change the error-correction setting Setting the fax-error-correction mode To change the V.34 setting Changing the V.34 setting Fax 117 Scan Understanding scanning methods Scanning to a folder Scanning from the device control panel WindowsProgramming the device Scan to button Scanning to e-mail Enww Canceling a scan job To view HP Director Scanning by using HP Director Windows Scanning from the device and HP Director Macintosh Scanning to a software program Scanning to a file Using page-by-page scanning To scan from a TWAIN-enabled program Using TWAIN-compliant and WIA-compliant softwareScanning from a TWAIN-enabled program Scanning from a WIA-enabled program Windows XP only Scanning a book Scanning a photo or a bookScanning a photo Enww Readiris Scanning by using optical character recognition OCR software Recommended color settings Scanner resolution and colorResolution and color guidelines Intended use Recommended resolution Color Setting Recommended use Enww 133 10Photo Inserting a memory card Changing default settings Changing job settings Printing photos directly from the memory card Printing photos from a proof sheet Printing an index Photo 141 11How do I? Print How do I? Print on special media, such as glossy or photo paper Print on envelopes and custom media sizes Print on both sides of the paper Click the System Settings tab Enww Network How do I? Set up the device and use it on the networkClick Install HP Color LaserJet Software Faxes Click Password Set my network passwordClick the Network Settings tab Print all the photos that are stored on a memory card Enable or disable memory cardsPhoto How do I? Print a particular photo from a memory card Save photos from a memory card to my computer Use a proof sheet Reduce or enlarge an original Copy How do I? Send a fax from the device Fax How do I? Create a fax cover To change default fax send settingsTo change default fax receive settings Answer Mode Automatic Click Pages in Document Tray Send a fax from my computerTo create a cover page template To create a cover page from a program To send a fax directly from another program Receive faxes to my computerTo send a fax from HP Toolbox To send a fax from the HP LaserJet Send Fax software Click Fax Phone Book Set up speed dialsTo set up speed dials Forward received faxes to another fax number Click Fax Receive Log View and print previously received faxesAdd or delete a contact To add a contact To delete a contact Import contacts from another source Create a new group list Standard Fine Super Fine Photo Save a scan to a folder on my computer Set up the Scan to button on the control panelScan How do I? Scan from the device control panel To add an e-mail address Send a scan to an e-mail messageAdd or edit e-mail addresses for scanning to e-mail Add or edit folders for scanning to a folder To edit a folder To add a folder Receive toner warning e-mail messages from the device Clean the paper pathOther How do I? Receive toner warnings from the device at my computer Replace print cartridges Restore factory-set default settingsClick the Troubleshooting Tools link View the control-panel menu items for the device Enww Replace the imaging drum Enww To clear a media jam inside the device Clear jams To clear output area jams Enww To clear a media jam from the automatic document feeder ADF Enww Click Continue Order new supplies Enww 177 12Managing the device and maintenance Usage ConfigurationInformation pages Demo Supplies Status Enww To view HP Toolbox HP Toolbox Scan to tab Status tabFax tab Documentation tab Troubleshooting tab Print Settings tab Device Settings pagesSystem Settings tab HP Toolbox links Fax Settings tabCopy Settings tab Network Settings tab To view Macintosh Configure Device Macintosh Configure Device Mac OS 10.2 Embedded Web server Features To print the fax activity log Fax logs and reportsPrinting the fax activity log Printing a fax call report To set the print times for the fax call report Setting print times for the fax call reportTo print a fax call report Printing the block-fax list Including the first page of each fax on the fax call reportPrinting a phone book report Printing the billing-code report To print all fax reports Printing all fax reportsTo print the block-fax list To clean the lid backing Cleaning the deviceTo clean the exterior To clean the scanner glass Cleaning the paper path To clean the paper path from the device control panel To clean the paper path from HP Toolbox To change the ADF Changing the automatic document feeder ADF Enww To change the ADF pickup roller assembly See Service and support To clean the ADF pickup roller assembly Enww 201 13Managing supplies Checking status and ordering supplies To check status and order supplies by using HP Toolbox Storing supplies Replacing and recycling supplies HP policy on non-HP supplies Resetting the printer for non-HP supplies HP fraud hotline To replace a print cartridge Changing a print cartridge Enww To change the imaging drum Changing the imaging drum Enww 211 14Troubleshooting Support strategy Possible problems Troubleshooting processTroubleshooting checklist Step Verification step Number Is the power on? Does the device copy? Do information pages print? Does the device print from the computer? Does the device receive Does the device recognize and print from a memory card? Possible problems Solutions Alert and warning messages Control panel messagesAlert and warning messages Communication error Comm. errorDevice error. Enter to Engine error Sending the fax Control panel message Description Fax is busy Canceled sendFax was busy. The device has canceled Fax memory full Canceling recv Fax recv. error Group dial not allowed in group Control panel message Description Fax Send errorMem. low 1 copy Press cancel Fit to Page on flatbed only No fax answer Redial pending No document sent Paper jam in area Proof Sheet Flatbed Only Scanning error Cannot connectControl panel message Description Photo Job Pending Photos Not Found Critical error messages Critical error messages 54.2, 55.1, 59.16, 59.192 Control panel message Description Scanner ErrorErrors Hardware error Fan Error Turn off then on Error Turn off then on Sensor error Control panel message Description Engine errorError Tips to avoid media jams Where to look for jamsClearing jams Media jams occur in the device Few sheets have been printed To clear output area jams Media jams occur in the automatic document feeder ADF Open the ADF cover Enww Improving print quality Print problemsPrint quality problems Identifying and correcting print defects Print-quality checklistGeneral print quality issues Solution Problem Cause Print is light or fadedHP specifications Problem Cause Media might not meet HP specifications Problem Paper tab and set Type is to Printed page contains Solving issues with color documents Device might not be correctly configured Print-media guidelines Media-handling problems Solving print-media problems Problem Cause Solution Performance problems See Media-handling problems Cause Solution Scan problemsSolving scanned image problems Part of the image did not scan Preventing problems Scan quality problems Loaded upside down Solving scan-quality problemsProblem Cause Blank pages Image problems Copy problemsPreventing problems From a faulty paper lot Media guides might be incorrectly adjusted More information Enww Problems receiving faxes Fax problems Fax problems Received while the input tray is Problems sending faxes Faxes stop during sending Voice call problems Print is skewed Pages are curled or wrinkled See Using the device volume controls Proof sheet not printing Memory card problemsMissing or wrong files Index page not printing Proof sheet not scanning Issues with photo printing Wrong photo printed Photo did not print Scanner did not read proof sheet Fax reports Troubleshooting toolsDevice pages and reports Billing-code report Fax activity logFax call report Phone book report To view HP Toolbox Service menuTroubleshooting tab Restoring the factory-set defaults Protocol trace Cleaning the paper pathTo restore the factory-set defaults To clean the paper path Was the device exposed to an electric or magnetic field? Becomes blank 273 Accessories and orderingInformation Product name Description Supplies Product name Description Part number Memory Cable and interface accessories Paper-handling accessories Inkjet paper is not recommended for this device Paper and other print media User-replaceable parts Print problems Language Part number Supplementary documentationUser guides Hewlett-Packard limited warranty statement Service and support Appendix B Service and support Print Cartridge and Imaging Drum Limited Warranty Statement Enww Priority Onsite Service Availability of support and serviceHP maintenance agreements Onsite service agreements Enww Electrical specifications Device specificationsPhysical specifications Supplies specifications SPL-Bystander Position Declared per ISO 9296 Environmental specificationsSound Power Level Declared per ISO 9296 Recommended Operating Storage Introduction Regulatory information Telephone Consumer Protection Act United States IC CS-03 requirements EU statement for telecom operation New Zealand telecom statements HP LaserJet printing supplies Environmental Product Stewardship programOzone production Energy consumption Non-U.S. returns Paper Material restrictions Nederlands Taiwan Product Options Declaration of conformity HP Color LaserJet 2830 and 2840 all-in-one Korean EMI statement Country-/region-specific safety statementsLaser safety statement Canadian DOC statement Laserturvallisuus Luokan 1 Laserlaite Klass 1 Laser Apparat Finnish laser statement ADF Glossary Isdn Twain USB Index Symbols/Numerics Enww Enww Enww Enww ADF Enww Enww Enww See also trays Enww Enww Page Q3948-90901