Lenovo 3246, 3029, 3054, 3282, 5498, 5474, 5384, 5554, 5450, 3652, 3544 Replacing the internal speaker

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Note: Make sure you note the locations of the cables when you disconnect the cables from the system board.

6. Remove the screw that secures the front audio and USB assembly to the chassis.

Figure 32. Removing the securing screw of the front audio and USB assembly

7.Remove the front audio and USB assembly from the chassis.

8.Install a new front audio and USB assembly into the chassis and align the screw hole in the front audio and USB assembly with the hole in the chassis.

9.Install the screw to secure the new front audio and USB assembly to the chassis.

10.Reconnect the front audio and USB assembly cables to the front audio connector and the front USB connector on the system board. See “Locating parts on the system board” on page 10.

What to do next:

To work with another piece of hardware, go to the appropriate section.

To complete the installation or replacement, go to “Completing the parts replacement” on page 38.

Replacing the internal speaker

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to:

http://www.lenovo.com/support

This section provides instructions on how to replace the internal speaker.

Note: Not all computers have the internal speaker.

To replace the internal speaker, do the following:

1. Turn off the computer and disconnect all power cords from electrical outlets.

Chapter 2. Installing or replacing hardware 35

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Contents ThinkCentre User Guide Page ThinkCentre User Guide First Edition October Copyright Lenovo Contents Appendix A. Notices Important safety information Viii ThinkCentre User Guide Product overview FeaturesInput/Output I/O features Preinstalled software programs SpecificationsSoftware provided by Lenovo Software overviewThinkVantage Productivity Center Adobe Reader Locations Locating connectors on the front of your computerAntivirus software Front connector locations Locating connectors on the rear of your computerUSB connectors Component locations Locating componentsSystem board parts locations Locating parts on the system boardDrive bay locations Locating internal drivesThinkCentre User Guide Handling static-sensitive devices Installing or replacing hardwareInstalling or replacing hardware Installing external optionsRemoving the computer cover Removing the computer coverInstalling or replacing a PCI card Removing and reinstalling the front bezelOpening the PCI card latch Removing a PCI card What to do next Installing or replacing a memory moduleOpen the retaining clips Installing a memory module Installing or replacing the optical driveRemoving the optical drive Installing the optical drive Replacing the batteryInstall a new battery Removing the screws for the power supply assembly Replacing the power supply assemblyReplacing the heat sink and fan assembly Replacing the primary hard disk drive Removing the heat sink and fan assemblyRemoving the primary hard disk drive Installing the hard disk drive into the bracket Removing the secondary hard disk drive Replacing the secondary hard disk driveInstalling the secondary hard disk drive Removing the front fan assembly Replacing the front fan assembly Installing the front fan assembly Replacing the rear fan assemblyRemoving the rear fan assembly Installing the rear fan assembly Replacing the front audio and USB assemblyReplacing the internal speaker Removing the old internal speaker Replacing the keyboard or mouse Installing a new internal speakerConnecting the USB keyboard or mouse Completing the parts replacementIntegrated cable lock Installing security featuresIntegrated cable lock PadlockErasing lost or forgotten passwords clearing Cmos Password protectionThinkCentre User Guide Creating and using recovery media Recovery informationCreating recovery media Performing backup and recovery operations Using recovery mediaPerforming a backup operation Using the Rescue and Recovery workspace Performing a recovery operationCreating a rescue medium Creating and using a rescue mediumInstalling or reinstalling device drivers Using a rescue mediumSolving recovery problems Using passwords Using the Setup Utility programStarting the Setup Utility program Viewing and changing settingsSetting, changing, and deleting a password Power-On PasswordAdministrator Password Hard Disk PasswordSelecting or changing the startup device sequence Exiting from the Setup Utility programSelecting a startup device Selecting a temporary startup deviceThinkCentre User Guide Updating flashing the Bios from a disc Using system programsUpdating system programs Recovering from a POST/BIOS update failure Updating flashing the Bios from your operating systemBasic troubleshooting Troubleshooting and diagnosticsLenovo ThinkVantage Toolbox Diagnostic programsPC-Doctor for DOS PC-Doctor for Rescue and RecoveryCleaning an optical mouse Lenovo ThinkVantage Tools Getting information, help, and serviceInformation resources Online Books folderSafety and Warranty Access HelpLenovo Welcome Using the documentation and diagnostic programs Help and serviceCalling for service Purchasing additional services Using other servicesAppendix A. Notices European conformance CE mark Trademarks Television output noticeCRU IndexMemory module PCI card Security features Page ThinkCentre User Guide Page 71Y7146