Manuals / Lenovo / Computer Equipment / Personal Computer

Lenovo 1654, 1938, 1962, 1942, 1837, 1782, 1739, 1762, 1665, 1738, 1664, 1763, 1741, 1677 Using your computer

Models: 1677 1938 1741 1664 1739 1665 1762 1761 1782 1942 1837 1738 1962 1654 1763

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1.Press the brightness-up button. The following six options are displayed:

•Auto adjustment

•Pre-defined color temperature

•Switch to RGB adjustment

•Brightness adjustment

•Default setting

•Exit

2.Press the brightness-down button to move to Brightness adjustment, and then press the brightness-up button. A brightness adjustment slider is displayed.

3.Press the brightness-down button to decrease the brightness level, or press the brightness-up button to increase the brightness level.

4.Wait for five seconds to exit.

Chapter 2. Using your computer 19

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Lenovo 1654, 1938, 1962, 1942, 1837, 1782, 1739, 1762, 1665, 1738, 1664, 1763, 1741, 1677, 1761 manual Using your computer

Contents

ThinkCentre User Guide Second Edition October Copyright Lenovo Contents Appendix A. Notices Static electricity prevention Important safety informationService and upgrades Extension cords and related devices Power cords and power adapters Heat and product ventilation Plugs and outletsExternal devices Operating environment Modem safety information Laser compliance statement Power supply statementCleaning and maintenance Viii ThinkCentre User Guide Product overview Features Color temperature adjustment System management featuresInput/Output I/O features Power supply Preinstalled operating system Preinstalled software programs Software provided by Lenovo SpecificationsSoftware overview ThinkVantage Password Manager Product RecoveryLenovo ThinkVantage Tools Lenovo Welcome Adobe Reader Antivirus software Locations Front connector, control, and indicator locations Rear connector locations Locating connectors on the rear of your computer Connector Description Adjusting the computer stand Machine type and model label Machine type and model label ThinkCentre User Guide Frequently asked questions Using your computerUsing the keyboard Using Windows shortcut keys Using a fingerprint reader Using the blue ThinkVantage buttonUsing the wheel mouse Adjusting audio Setting the volume from Control Panel Setting the volume from the desktopUsing CDs and DVDs Adding the volume icon to the taskbar Recording a CD or DVD Handling and storing CD and DVD mediaPlaying a CD or DVD Color temperature adjustment Using the single-touch and multi-touch featureUsing the single-touch feature Using the multi-touch feature Switching to RGB adjustment Selecting a pre-defined color temperatureMaking brightness adjustment Red-adjustment Green-adjustment Blue-adjustment Exit Using your computer ThinkCentre User Guide You and your computer Accessibility and comfortArranging your workspace Comfort Electrical outlets and cable lengths Glare and lightingAir circulation Replacement power cords Voltage-selection switchRegister your computer with Lenovo Moving your computer to another country or region ThinkCentre User Guide Security Security features Attaching an integrated cable lock Using passwordsBios passwords Setting the fingerprint reader Windows passwordsUsing and understanding firewalls Protecting data against viruses ThinkCentre User Guide Installing external options Installing or replacing hardwareInstalling or replacing hardware Replacing the wireless mouse Replacing the wireless keyboard Opening the battery compartment Obtaining device drivers Closing the battery compartment cover Creating recovery media Recovery informationCreating and using recovery media Performing a backup operation Using recovery mediaPerforming backup and recovery operations Click the Restore your system from a backup icon Performing a recovery operationUsing the Rescue and Recovery workspace Creating a rescue medium Creating and using a rescue mediumUsing a rescue medium Reinstalling preinstalled device drivers Reinstalling preinstalled applications and device driversReinstalling preinstalled applications Solving recovery problems Reinstalling software programsReinstalling device drivers Recovery information ThinkCentre User Guide Viewing and changing settings Using the Setup Utility programStarting the Setup Utility program Power-On Password Password considerationsAdministrator Password Hard Disk Password Selecting a startup device Enabling or disabling a deviceSelecting a temporary startup device Selecting or changing the startup device sequence Exiting from the Setup Utility program Updating system programs Using system programsUpdating flashing the Bios from a disc Click Downloads and drivers Updating flashing the Bios from your operating system Using System Update Preventing problemsKeeping your computer current Getting the latest device drivers for your computer Basics Computer Cleaning your computerKeyboard Optical mouse Moving your computer Good maintenance practicesCleaning a glass-screen surface Basic troubleshooting Troubleshooting and diagnostics Troubleshooting Troubleshooting procedure No audio in Windows Audio problems No audio in DOS applications or games CD problemsSound comes from one external speaker only Black screen instead of DVD video DVD problemsCD or DVD does not work No audio or intermittent audio while playing DVD movie DVD movie will not playPlayback is very slow or choppy Invalid disc or no disc found message All or some keys on the keyboard do not work Intermittent problemsKeyboard, mouse, or pointing device problems Mouse or pointing device does not work Wireless keyboard does not workPointer on the screen does not move smoothly with the mouse Fingerprint reader does not work Image appears to be flickering Monitor problemsWrong characters appear on the screen Image is discolored Networking problemsEthernet problems Your computer cannot connect to the network Wake on LAN feature is not workingClick Start Control Panel Click Hardware and Sound Adapter stops working for no apparent reason Bluetooth problems Wireless LAN problemWireless WAN problem An option that was just installed does not work Option problemsSound does not come from the Bluetooth headphone An option that previously worked does not work now Click Disk Cleanup Performance and lockup problemsInsufficient free hard disk drive space Click Start Computer Excessive number of fragmented files Printer problemsSerial port problems Software does not work as expected Software problems Diagnostic programs USB problems Running the diagnostic program from a diagnostic disc Creating a diagnostic discLenovo ThinkVantage Toolbox PC-Doctor for DOS Getting information, help, and service Using the documentation and diagnostic programs Help and serviceCalling for service Lenovo Support Web site Purchasing additional services Using other services ThinkCentre User Guide Appendix A. Notices Trademarks Export classification notice Appendix B. Regulatory informationTelevision output notice Electronic emissions notices Industry Canada Class B emission compliance statement Additional regulatory information ThinkCentre User Guide Recycling information Appendix C. Weee and recycling informationImportant information for the European Directive 2002/96/EC ThinkCentre User Guide Index Optical mouse cleaning Password Administrator Considerations Page 0B03427