Lenovo 3126, 3120, 3122, 3128 manual Removing the front bezel

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3. Remove the front bezel by releasing the three plastic tabs and pivoting the front bezel outward.

Figure 40. Removing the front bezel

4.Locate the internal speaker. See “Locating components” on page 10.

5.Disconnect the internal speaker cable from the internal speaker connector on the system board. See “Locating parts on the system board” on page 10.

Chapter 2. Installing or replacing hardware 45

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Contents ThinkCentre User Guide Second Edition December Copyright Lenovo Contents Index Important safety information Iv ThinkCentre User Guide Product overview FeaturesConnectivity Preinstalled operating system Specifications Software overviewSoftware provided with your Windows operating system Lenovo ThinkVantage Tools Locations Lenovo Solution CenterFront connector, control, and indicator locations Locating connectors and parts on the rear of your computerConnector Description If you use speech-recognition software Locating parts on the system board Locating componentsSystem board part locations Locating internal drivesDrive bay locations Installing or replacing hardware Installing or replacing hardwareHandling static-sensitive devices Opening the computer cover Installing external optionsRemoving the front bezel Removing and reinstalling the front bezelWhat to do next Accessing the system board components and drivesRemoving a memory module Installing or replacing a memory moduleOpening the retaining clips Installing or replacing a PCI cardRemoving a PCI card Installing the PCI card Installing the card reader Installing or replacing the card readerInstalling the card reader Installing the screw that secures the card reader Replacing the card reader Installing the card reader Replacing the battery Replacing the hard disk drive Removing the old batteryRemoving the hard disk drive Removing the hard disk drive from the bracket Replacing the optical drive Installing the hard disk drivePivoting the optical drive bay Removing the old optical drive Installing a new optical drive Replacing the heat sink and fan assemblyScrews that secure the heat sink and fan assembly Removing the heat sink fan duct Installing the heat sink fan duct Replacing the power supply assemblyInstalling or replacing hardware Removing the heat sink fan duct Power connectors on the system board Installing the power supply assembly Replacing the microprocessor Accessing the microprocessor Installing or replacing hardware Replacing the internal speaker Removing the front bezel Removing the cover presence switch Removing the internal speaker Installing the new internal speaker Reinstalling the cover presence switch Replacing the front audio and USB assemblyRemoving the front audio and USB assembly Replacing the mouse Replacing the keyboardMouse connectors Completing the parts replacementObtaining device drivers Basic security features Password protectionIntegrated cable lock Erasing a lost or forgotten password clearing Cmos Recovery information Creating and using recovery mediaCreating recovery media Using recovery media Performing backup and recovery operationsPerforming a backup operation Using the Rescue and Recovery workspace Performing a recovery operationCreating and using a rescue medium Using a rescue mediumCreating a rescue medium Solving recovery problems Installing or reinstalling device driversThinkCentre User Guide Using passwords Using the Setup Utility programStarting the Setup Utility program Viewing or changing settingsSetting, changing, or deleting a password Password considerationsPower-on password Administrator passwordSelecting a startup device Selecting a temporary startup deviceViewing or changing the startup device sequence Exiting the Setup Utility program Using system programs Updating flashing the Bios from a discUpdating system programs Recovering from a Post and Bios update failure Updating flashing the Bios from your operating systemUpdating system programs ThinkCentre User Guide Basic troubleshooting Troubleshooting and diagnostic programsLenovo Solution Center Diagnostic programsPC-Doctor for DOS Lenovo ThinkVantage ToolboxCleaning the mouse Optical mouseNon-optical mouse Troubleshooting and diagnostic programs ThinkCentre User Guide Lenovo ThinkVantage Tools Getting information, help, and serviceInformation resources Online Books folderLenovo Support Web site Access HelpSafety and warranty Lenovo WelcomeHelp and service Using the documentation and diagnostic programsCalling for service Purchasing additional services Using other servicesAppendix A. Notices Television output notice Trademarks ThinkCentre User Guide CRU IndexInstalling options Memory module PCI card Security features Set Power-On Password ThinkCentre User Guide Page 0A94223