Lexmark 340, 342n manual How to clean the printhead lens

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Troubleshooting

How to clean the printhead lens

You can solve some print quality problems by cleaning the printhead lens.

1Turn the printer off.

2Open the front cover by pressing the button on the left side of the printer and lowering the cover.

Print quality problems

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Contents E340, E342n Licensing notice Edition noticeEdition June United Kingdom Telecommunications Act Conventions Safety informationLaser notice Electronic emission noticesPrinter energy consumption Statement of Limited Warranty Additional rights Limitation of liabilityContents Print media tasks and tips ContentsHow to install options Troubleshooting 104 Printer overview Printer overview Installing printer software using the drivers CD Before installing printer softwareInstalling printer software through the Add Printer Wizard WindowsInstalling software for local printing Installing optional printer softwareLocal Printer Settings Utility Macintosh`Creating a desktop printer icon Mac OS UNIX/LinuxFor Mac OS 9.0 Open Apple LaserWriter Double-clickDesktop Printer UtilityShared printing Installing software for direct printingInstalling software for network printing Setting up shared printingInstalling software on the computer attached to the printer Connecting other network computers to the printerHelpful tips for network printing Go to Verifying the IP settings onAssigning a printer IP address Close Network Neighborhood or My Network PlacesPrinting setup pages Verifying the IP settings Printing a network setupGo on to Verifying the IP settings on Mac OS Install a custom PPD fileCreate a desktop printer NetWare What types of print media can be loaded? Print media tasks and tipsPrint media tasks and tips Where can print media be loaded in the printer?Paper Tips on choosing the right print mediaPreprinted forms and letterhead TransparenciesLabels Card stock Tips on storing print media and suppliesStoring paper Storing suppliesTips on preventing jams How to load the 250-sheet and 550-sheet trays Print media tasks and tips Insert the tray Extend the paper support on the output bin Attaching the dust cover Extending the tray for legal or folio size paperHow to use the rear exit How to load the manual feederHow to use the rear exit How to clear paper jams Print media tasks and tips Print media tasks and tips Printing tasks How to manually feed a print jobPrinting tasks Portrait How to print on both sides of the paper manual duplexLandscape Printing tasks Across Down How to print multiple page images on one page N-up printingHow to print a booklet How to print a poster How to print using an overlay or a watermark How to print on letterheadUsing an overlay Click Watermark Using a watermarkCanceling a job from a Macintosh computer How to cancel a print jobFrom the printer operator panel From a Windows computerHow to access the system board How to install optionsHow to install options See Recognizing installed options How to add a memory cardHow to add a flash card How to install a 550-sheet drawer Click File Æ Properties Click the Install Options tab Recognizing installed optionsIndicator light Using the operator panelUnderstanding the operator panel ButtonsMenus Disabled Using the operator panel to change printer settingsMenus Disabled Using the printer menus Custom Types Paper MenuPaper Size Paper Texture Paper SourcePaper Type Setup Paper WeightSubstitute Size UniversalFinishing Menu Multipage View Multipage PrintSeparator SheetsJob Menu Utilities MenuPrint Buffer Reset PrinterQuality Menu Print ResolutionPictureGrade Toner DarknessSetup Menu Print Area ProtectFit to WholeToner Alarm Print TimeoutWait Timeout PrinterPCL Emul Menu Pitch Symbol SetPoint Size Tray RenumberPostScript Menu Print PS ErrorPpds Menu Font PriorityLines per Inch Character SetFormat TrayParallel Menu SmartSwitch Parallel ModeNetwork Menu ProtocolNetwork Buffer Std Net SetupUSB Menu USB Buffer See also How to cancel a print job Canceling JobSee also How to change a toner Activating Menu ChangesUnderstanding the printer messages Printing Menu Settings Power SaverNot Ready Performing Self TestSee also Using the operator panel to Resetting the PrinterChange printer settings Restoring Factory DefaultsRes Save Off Deficient Ppds Font ErrorMemory Insufficient CollationService ErrorFlash Full Unformatted FlashMac Binary PS NPA ModeSet Card Speed Parallel Mode Understanding the printer configuration menusProtocol Defaults Reset FactoryReset PhotoconductorSoftware and network tasks Printing the menu settings and network setup pagesVerifying the IP settings How to configure for TCP/IPPrinting the Print Quality Test Pages Assigning a printer IP addressUsing the printer resident Web World Wide What supplies do I need and how do I order them?For the USA and Canada3 For Europe, the Middle East, and Africa4Supplies information How to conserve suppliesFor Latin America6 Checking the toner and photoconductor levels How to know when you need new suppliesHow to change a toner cartridge Supplies information Supplies information Recycling Lexmark products How to change a photoconductor kit 100 101 Enabling the menus Disabling the operator panel menusAdministration Restoring factory default settingsPanel to change printer settings Click Printer Software General problemsTroubleshooting Print quality problems Print too light When you handle the sheetsPrint too dark Transparency print quality is poorUneven printing Ghost ImagesIncorrect margins Skewed printHow to clean the printhead lens 110 111 Index Index 114 115 116 TCP/IP 118

342n, 340 specifications

The Lexmark 340n and 342n are part of Lexmark's robust line of monochrome laser printers designed for small to medium-sized businesses. These models are well-known for their reliability, advanced features, and the ability to efficiently handle a high volume of printing tasks.

The Lexmark 340n offers print speeds of up to 35 pages per minute (ppm), making it a strong contender for busy work environments where time is of the essence. It features a first-page-out time of less than 6.5 seconds, ensuring that users do not have to wait long to retrieve their documents. The 342n model similarly aligns with these performance metrics but provides enhanced capabilities, particularly in terms of memory and optional print finishing features.

One of the standout characteristics of these printers is their excellent print quality. Both models utilize Lexmark's Advanced Toner technology, which helps produce crisp text and sharp images, with a print resolution of up to 1200 x 1200 dots per inch (dpi). This makes them suitable for printing professional documents, reports, and presentations.

Connectivity options are abundant in these models, allowing users to integrate them seamlessly into their existing network infrastructure. The printers support USB, Ethernet, and optional wireless connections, providing flexibility for different workplace setups. Additionally, the Lexmark 340n and 342n are compatible with various mobile printing solutions, such as Apple AirPrint and Google Cloud Print, enabling users to print directly from their smartphones and tablets.

Another important feature is the user-friendly control panel, which includes a 2-line LCD display for easy navigation through settings and functions. Both models also have a standard paper capacity of 250 sheets, which can be expanded with optional trays, making them capable of handling larger print jobs without frequent paper replenishment.

Furthermore, they are designed with energy efficiency in mind. The models comply with Energy Star certification standards, minimizing power consumption during operation and standby modes. This not only reduces operational costs but also supports environmentally friendly practices within the workplace.

In summary, the Lexmark 340n and 342n printers are equipped with a combination of speed, quality, and connectivity that meets the demands of modern businesses. With their advanced features and robust performance, these printers are ideal choices for organizations looking to optimize their printing processes while maintaining high standards of output quality.