Lexmark C770 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 C770, C772 Safety information Edition MarchTrademarks Contents Contents Input options Output optionsInternal options Installing 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 expanderInstalling an output expander Installing a 5-bin mailbox Installing a StapleSmart finisher Installing memory and option cards Removing the system board access coverInstalling a memory card Installing a firmware card Installing a hard disk Installing an option card Card FunctionConnector Accessing the printer system board Removing memory and option cardsRemoving memory cards Removing an option cardInstalling and removing options Removing a hard disk Removing a firmware card Reinstalling the system board access cover Printing Understanding the printer operator panelOperator panel buttons PrintingStatus Indicates Sending a job to print Button FunctionPrinting 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 trays Printing Loading the 2000-sheet tray Printing Loading the multipurpose feeder Printing Mac OS Printing on specialty media transparencies, labels, otherWindows Loading the trays Loading the multipurpose feederLinking trays Select File PrintPrinting 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 RoutingPrint All Delete All JobName1 JobName2 Tips for successful printing Storing paperStoring supplies Avoiding jams Paper characteristics Media guidelinesPaper Media specifications Media specifications Unacceptable paper Storing paperSelecting paper Printing on letterhead TransparenciesSelecting preprinted forms and letterhead Media source or process Print side TopMedia specifications Selecting transparencies EnvelopesLabels Identifying media sources and specifications Storing mediaCard stock Dimensions Media sizes and supportMedia support by type for optional features Media types and weights input options Media types and weights output options MaximumMaximum2,4 Vinyl labels Media capacitiesPaper labels Banner paperStatus / 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 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 LockoutAligning the image transfer unit Using 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 pathMarks occur down the page repeatedly in all Marks occur repeatedly only in one colorMultiple times on a ColorsTo 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?What are Detailed Color Samples and how do I access them? RGB101 Industry Canada compliance statement With a network cable installedElectronic emission notices Avis de conformité aux normes de l’industrie du CanadaWithout a network cable installed Korean MIC statement104 Hinweis zum GS-Zeichen Noise emission levelsGerman GS mark notice Durchschnittlicher Schallpegel dBA in 1 m UmkreiProduct energy consumption Power SaverMode Description Power consumption Total energy usageLaser advisory label Laser noticeStatement of Limited Warranty Lexmark International, Inc. Lexington, KY109 Index Index PIN112

C772, C770 specifications

The Lexmark C770 and C772 series of printers are robust color laser printers designed for medium to large workgroups that demand high-quality printing along with impressive speed and efficiency. These models stand out due to their impressive set of features and advanced technologies, catering to a range of business printing needs.

One of the hallmarks of the Lexmark C770 and C772 is their print quality. With a resolution of up to 1200 x 1200 dpi, these printers deliver sharp text and vibrant color graphics, making them ideal for producing professional-looking documents, presentations, and marketing materials. Additionally, the printers utilize Lexmark's unique Unison toner technology, which ensures consistent, high-quality printing throughout the life of the cartridge, reducing the need for frequent replacements and maximizing productivity.

Speed is another significant advantage of the C770 and C772 series. Both models are capable of printing at impressive speeds of up to 35 pages per minute for black and white prints and slightly lower for color documents. This rapid output allows businesses to meet tight deadlines without compromising on quality. Furthermore, the first-page-out time is notably fast, ensuring that users do not waste time waiting for their documents.

Connectivity options are extensive with the C770 and C772. These printers support USB, Ethernet, and optional wireless connections, enabling seamless integration into various network environments. This flexibility allows multiple users and devices to access the printer, facilitating collaboration and streamlining workflows.

Additionally, user-friendly features such as a large, intuitive LCD screen and an easy-to-navigate interface simplify printer management and operation. The printers also support advanced finishing options, including duplex printing, which saves paper and reduces costs, making them environmentally friendly choices for businesses.

Moreover, security features are incorporated to protect sensitive data, with options for secure printing and data encryption. This makes these printers suitable for environments where confidentiality is crucial.

In summary, the Lexmark C770 and C772 series are powerful color laser printers that combine exceptional print quality, impressive speed, versatile connectivity, and advanced features, making them a worthy investment for businesses looking to enhance their printing capabilities.
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