Lexmark C780 Adjusting operator panel brightness and contrast, Disabling operator panel menus

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6 Administrative support

Adjusting operator panel brightness and contrast

The LCD operator panel contrast and brightness can be adjusted through the Utilities menu. For more information, see the Menus and Messages Guide.

The LCD Brightness and LCD Contrast settings are adjusted separately. To change the LCD Brightness or LCD Contrast settings:

1Make sure your printer is on.

2Press on the operator panel.

3Press until Settings appears, and then press .

4Press until Utilities Menu appears, and then press .

5Press until appears next to the LCD setting you want to change, and then press .

6Press to increase the brightness or contrast, or press to decrease the brightness or contrast.

7When the adjustment is complete, press .

This saves this setting as the new user default and the printer returns to Ready.

Disabling operator panel menus

Since many people could be using the printer, an administrator may choose to lock the operator panel menus to keep others from changing menu settings from the operator panel.

To disable the operator panel menus so that changes cannot be made to the printer default settings:

1Turn the printer off.

Note: Disabling the operator panel menus does not prevent access to Print and Hold functionality.

2Press and hold and while turning the printer on.

3Release both buttons when Performing Self Test appears on the display.

The printer performs its power-on sequence, and then Config Menu appears on the first line of the display.

4Press until Panel Menus appears, and then press .

5Press until Disable appears, and then press .

The following messages appear briefly: Submitting Selection and Disabling Menus. The operator panel returns to Panel Menus.

6Press until Exit Config Menus appears, and then press . Activating Menu Changes appears. The menus are disabled.

Resetting the Printer appears briefly followed by a clock. The operator panel then returns to Ready.

Administrative support

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Contents C780, C782 Safety information Edition OctoberTrademarks Contents Contents Installing and removing options Input options Output options Internal optionsInstalling a 2000-sheet drawer Installing and removing optionsContinue with Installing a 500-sheet drawer Installing a 500-sheet drawer Installing a duplex unit Installing the printer Installing an output expander Installing and removing options Installing a 5-bin mailbox Installing and removing options Installing a StapleSmart finisher Installing memory and option cardsRemoving the system board access cover Installing a memory card Installing an option-added firmware card Installing a hard disk Installing and removing options Installing an option card Card FunctionAccessing the printer system board Removing memory and option cardsRemoving memory cards Removing an option card Removing a hard diskInstalling and removing options Reinstalling the system board access cover Removing an option-added firmware cardPrinting Understanding the printer operator panelStatus Indicates Sending a job to print PrintingButton Function Printing from a USB flash memory device Canceling a print job Canceling a job from the printer operator panelCanceling a job from a computer running Windows Canceling a job from a Macintosh computer Printing a menu settingsPrinting a network setup Canceling a job from a Macintosh computer running Mac OSPrinting a font sample list Printing a directory listLoading the trays Loading 500-sheet traysPrinting Loading the 2000-sheet tray Printing Loading the multipurpose feeder Printing Printing on specialty media transparencies, labels, other WindowsLoading the trays Loading the multipurpose feeder Linking trays Mac OSSelect File Print Printing and deleting held jobs Linking output binsHolding a job in the printer Value DescriptionMacintosh Printing confidential jobsWindows Print Time FiltersAt the printer Entering a personal identification number PINEnter PIN Repeat Print Verify PrintReserve Print Copies & Pages or General pop-up menu, choose Job RoutingAt the printer Print All Delete All JobName1 JobName2Tips for successful printing Storing paperStoring supplies Avoiding jams Media guidelines Paper characteristicsWeight PaperMedia specifications Unacceptable paperMedia specifications Selecting paper Storing paperSelecting preprinted forms and letterhead Envelopes Media specifications Printing on letterheadTransparencies Selecting transparenciesLabels Storing media Card stockIdentifying media sources and specifications DimensionsMedia sizes and support Media support by type for optional features Optional Finisher Standard Offset StapleMedia types and weights input options Media types and weights output options Envelopes2Maximum Maximum 2,3Grain long Labels- 2,4Vinyl labels Media capacitiesPaper labels EnvelopesStatus / Supplies Determining the status of suppliesReady. Tray 1 Low, Tray View supplies Y KOrdering supplies Print cartridges Supply Menu selection item What the setting doesConserving supplies Maintaining the printerOrdering a fuser Toner waste containerFuser and ITU Type of fuser Printer voltage Part numberRecycling Lexmark products Ordering an image transfer unit and transfer rollerOrdering staple cartridges Clearing paper jams Identifying jamsAccess doors and trays Clearing paper jamsMessage Check Areas What to do Understanding jam messagesPaper jam messages Expander jams Area MClearing the entire paper path Area aArea B Area C Area DArea T1 Area EArea Tx Area J Area KArea L Clearing mailbox, finisher, or output expander jams Area M Clearing fuser jamsClearing fuser jams Clearing image transfer unit jams Clearing paper jams Clearing paper jams Clearing paper jams If you still need help Adjusting operator panel brightness and contrast Disabling operator panel menusRestoring factory default settings Administrative supportEnabling operator panel menus Adjusting Power Saver Encrypting the diskUsing the secure Embedded Web Server Setting security using the Embedded Web Server EWSSetting the system password Click ConfigurationUsing Secure mode Click TCP/IP Port AccessSupporting IPSec Internet Protocol Security Click Menu Lockout Setup Using 802.1x AuthenticatingClick 802.1x Authentication Locking the operator panel menusClick Confidential Print Setup Black only modeConfidential Print Setup Printing LockoutUsing the Coverage Estimator Size sensingDisabling size sensing Using MarkVision Professional Configuring printer alertsUsing the Setup Menu Using MarkVision MessengerChecking an unresponsive printer Online customer support Calling for serviceSymptom Cause Solution Check the Print as image boxSolving printing problems TroubleshootingSet Page Protect to Off from Print Recovery Solving mailbox problems For more informations, see Clearing mailbox, finisher, orOutput expander jams Area M Solving option problems See Solving high capacity feeder problemsOption Action Solving high capacity feeder problems Problem SolutionSee Loading the trays or Loading Solving paper feed problemsSolving print quality problems Paper pathMultiple times on a Top to Bottom or Left to RightMarks occur repeatedly only in one color Marks occur down the page repeatedly in allTo be replaced Cartridges BCD E What is RGB color? Solving color quality problemsFrequently asked questions FAQ about color printing How does the printer know what color to print?What is Manual Color Correction? Is it possible to increase the gloss in the printed output?Cmyk What are Detailed Color Samples and how do I access them? Electronic emission notices Avis de conformité aux normes de l’industrie du CanadaEuropean Community EC directives conformity 102 Industry Canada compliance statement German GS mark notice Noise emission levelsHinweis zum GS-Zeichen Durchschnittlicher Schallpegel dBA in 1 m UmkreiProduct energy consumption Power SaverMode Description Power consumption Total energy usage106 China RoHS Laser advisory labelPart Name Hazardous Substances or Elements Statement of Limited Warranty Laser notice109 Index Index PIN112