Lenovo 804 manual Replacing the USB keyboard or mouse, Installing the front fan assembly

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9.Install the new front fan assembly by aligning the new rubber mounts that came with the new front fan assembly with the corresponding holes in the chassis, and then push the rubber mounts through the holes. Then, carefully pull on the tips of the rubber mounts from the bottom until the new front fan assembly is secured in place.

Note: The new front fan assembly will have four new rubber mounts attached.

Figure 38. Installing the front fan assembly

10.Connect the new front fan assembly cable to the system fan connector on the system board. See “Locating parts on the system board” on page 8.

11.Reinstall the heat sink fan duct. See Figure 20 “Installing the heat sink fan duct” on page 24.

12.Reinstall the hard disk drive. See “Replacing the hard disk drive” on page 34.

What to do next:

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

•To complete the replacement, go to “Completing the parts replacement” on page 40.

Replacing the USB keyboard or mouse

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://support.lenovo.com

Chapter 2. Installing or replacing hardware 39

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Contents ThinkCentre User Guide Second Edition September Copyright Lenovo 2010 Contents Index Important safety information Iv ThinkCentre User Guide Product overview FeaturesInput/Output I/O features System management featuresSecurity features ConnectivitySpecifications Preinstalled software programsPreinstalled operating system Software provided with your Windows operating system Software overviewLenovo ThinkVantage Tools ThinkVantage Productivity CenterThinkVantage Rescue and Recovery Product RecoveryPassword Manager ThinkVantage Client Security SolutionAdobe Reader LocationsConnector Locating connectors and parts on the rear of your computerLocating parts on the system board Locating componentsSystem board part locations Locating internal drivesDrive bay locations Installing or replacing hardware Installing or replacing hardwareInstalling external options Handling static-sensitive devicesRemoving the computer cover Removing the computer coverRemoving the front bezel Removing and reinstalling the front bezelReinstalling the front bezel Accessing the system board components and drivesPivoting the drive bay assembly upward Installing or replacing a PCI cardThinkCentre User Guide Removing the PCI card What to do next Installing or replacing a memory moduleRemoving the memory module Installing the memory module Replacing the batteryRemoving the old battery Replacing the heat sink and fan assemblyRemoving the heat sink fan duct Screws that secure the heat sink and fan assembly Replacing the microprocessor Installing the heat sink fan ductAccessing the microprocessor Removing the microprocessor Replacing the power supply assembly Removing the heat sink fan duct Removing the power supply assembly Installing the power supply assembly Replacing the optical drive Removing the optical drive screws Slide the optical drive out of the front of the computer Replacing the hard disk drive Installing the optical drivePivoting the drive bay assembly Removing the hard disk drive Installing the hard disk drive Replacing the front fan assemblyRemoving the front fan assembly Replacing the USB keyboard or mouse Installing the front fan assemblyConnecting the USB keyboard or mouse Completing the parts replacementObtaining device drivers Basic security featuresIntegrated cable lock Installing an integrated cable lockPassword protection Erasing a lost or forgotten password clearing CmosPadlock ThinkCentre User Guide Recovery information Creating and using recovery mediaCreating recovery media Using recovery media Performing backup and recovery operationsOn the Rescue and Recovery menu, click Restore your system Performing a backup operation Performing a recovery operationClick the Restore your system from a backup icon Creating and using a rescue medium Using the Rescue and Recovery workspaceCreating a rescue medium Using a rescue mediumSolving recovery problems Installing or reinstalling device driversStarting the Setup Utility program Using the Setup Utility programViewing or changing settings Using passwordsPower-on password Password considerationsAdministrator password Setting, changing, or deleting a 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 Updating flashing the Bios from your operating system Recovering from a Post and Bios update failureClick Downloads and drivers Updating system programs ThinkCentre User Guide Basic troubleshooting Troubleshooting and diagnostic programsDiagnostic programs PC-Doctor for Rescue and RecoveryLenovo ThinkVantage Toolbox PC-Doctor for DOS Cleaning an optical mouseThinkCentre User Guide Information resources Getting information, help, and serviceOnline Books folder Lenovo ThinkVantage ToolsSafety and warranty Access HelpThinkVantage Productivity Center Lenovo WelcomeHelp and service Using the documentation and diagnostic programsLenovo Support Web site Using other services Calling for servicePurchasing additional services ThinkCentre User Guide Appendix A. Notices European conformance CE mark Trademarks Television output noticeAppendix A. Notices ThinkCentre User Guide CRU IndexKeyboard, replacing Lenovo Customer Support Center Set Power-On Password ThinkCentre User Guide Page 71Y8530