Lenovo 3557, 3034, 6667, 5092, 5226, 4394, 3853, 3692, 3467, 3356, 3307, 3142 Cleaning an optical mouse

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3.Follow the instructions on the screen to select the diagnostic test you want to run. Note: For additional help, press the F1 key.

4.Remove the diagnostic disc from the optical drive when you complete the diagnostic process.

Cleaning an optical mouse

This section provides instructions on how to clean an optical mouse.

An optical mouse uses a light-emitting diode (LED) and an optical sensor to navigate the pointer. If the pointer on the screen does not move smoothly with the optical mouse, you might need to clean the mouse.

To clean an optical mouse, do the following:

1.Turn off your computer.

2.Disconnect the mouse cable from the computer.

3.Turn the mouse upside down to check the lens.

a.If there is a smudge on the lens, gently clean the area with a plain cotton-tipped swab.

b.If there is debris in the lens, gently blow the debris away from the area.

4.Check the surface on which you are using the mouse. If you have a very intricate picture or pattern beneath the mouse, it may be difficult for the digital signal processor (DSP) to determine changes in the mouse position.

5.Reconnect the mouse cable to the computer.

6.Turn your computer back on.

44ThinkCentre User Guide

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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 Features Product overviewExpansion Specifications Preinstalled software programsSoftware overview Software provided by LenovoThinkVantage Productivity Center Adobe Reader Locations Locating connectors on the front of your computerAntivirus software Locating connectors on the rear of your computer Connector DescriptionLocating components Component locationsLocating parts on the system board System board part locationsThinkCentre User Guide Installing or replacing hardware Installing or replacing hardwareInstalling external options Handling static-sensitive devicesRemoving and reinstalling the front bezel Opening the computer coverInstalling or replacing a memory module Removing the front bezelReplacing the hard disk drive What to do nextRemoving the hard disk drive Replacing the optical drive Removing the optical driveReplacing the battery Installing the optical driveRemoving the old battery Replacing the heat sinkReplacing the internal speaker Removing the heat sinkReplacing the front audio and USB assembly Removing the internal speakerReplacing the ac power adapter Removing the front audio and USB assemblyReplacing the ac power adapter bracket Connecting the ac power adapterRemoving the ac power adapter bracket Installing the ac power adapter into the new bracket Completing the parts replacement Replacing the keyboard or mouseInstalling security features Integrated cable lockPassword protection Erasing lost or forgotten passwords clearing CmosThinkCentre User Guide Creating and using recovery media Recovery informationCreating recovery media Performing backup and recovery operations Using recovery mediaPerforming a backup operation Performing a recovery operation Using the Rescue and Recovery workspaceCreating and using a rescue medium Creating a rescue mediumUsing a rescue medium Installing or reinstalling device driversSolving recovery problems Using the Setup Utility program Starting the Setup Utility programViewing and changing settings Using passwordsPower-On Password Administrator PasswordHard Disk Password Setting, changing, and deleting a passwordExiting from the Setup Utility program Selecting a startup deviceSelecting a temporary startup device Selecting or changing the startup device sequenceThinkCentre User Guide Updating flashing the Bios from a disc Using system programsUpdating system programs Updating flashing the Bios from your operating system Recovering from a POST/BIOS update failure Troubleshooting and diagnostics Basic troubleshootingDiagnostic programs Lenovo ThinkVantage ToolboxPC-Doctor for Rescue and Recovery PC-Doctor for DOSCleaning an optical mouse Getting information, help, and service Information resourcesOnline Books folder Lenovo ThinkVantage ToolsSafety and Warranty Access HelpLenovo Welcome Using the documentation and diagnostic programs Help and serviceCalling for service Using other services Purchasing additional servicesAppendix A. Notices Television output notice European conformance CE mark TrademarksIndex CRURescue and Recovery workspace Page ThinkCentre User Guide Page 71Y7204