Lenovo 3000 J Series manual Troubleshooting and diagnostics

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7.Look for a build up of dirt on the plastic rollers 3 inside the ball cage. This build up usually appears as a stripe running across the middle of the rollers.

8.If the rollers are dirty, clean them by using a cotton swab soaked in isopropyl (rubbing) alcohol. Turn the rollers with your finger and continue swabbing them until all the dirt is removed. Be sure the rollers are still centered in their channels after you clean them.

9.Remove any fibers from the swab that might be remaining on the rollers.

10.Replace the ball and the retainer ring. Twist the retainer ring to the locked position.

11.Reconnect the mouse cable to the computer.

12.Turn your computer back on.

Chapter 7. Troubleshooting and diagnostics 59

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Contents User Guide Lenovo 3000 J Series Page Lenovo 3000 J Series Page Contents Getting information, help Conditions that require immediate action Important safety informationService and upgrades General safety guidelinesStatic electricity prevention Power cords and power adaptersViii User Guide Plugs and outlets Voltage-selection switchExtension cords and related devices Heat and product ventilation External devicesBatteries Operating environment To connect To disconnect Electrical current safety informationLithium battery notice Laser compliance statement Modem safety informationData safety Power supply statementCleaning and maintenance Additional safety informationIntroduction Xvi User Guide Glare and lighting Arranging your workspaceComfort Electrical outlets and cable lengths Air circulationConnecting your computer Setting up your computerUser Guide Setting up your computer User Guide 1394 User Guide Completing important tasks Turning on powerFinishing the software installation Updating your operating system Installing other operating systemsUpdating your antivirus software Shutting down the computerFeatures Installing optionsMemory Input/output features Available options Handling static-sensitive devices SpecificationsTools required Installing external options Locating the connectors on the front of your computer Locating the connectors on the rear of your computer Connector Description Obtaining device drivers Removing the cover Identifying parts on the system board Locating componentsUser Guide Installing options What to do next Installing memoryInstalling adapters Secure the adapter with the screw as shown Drive specifications Installing internal drivesUser Guide Installing a drive User Guide Installing options Connecting the first CD drive or DVD drive Connecting a serial ATA hard disk drive Installing security featuresPadlock loop Password protectionChanging the battery Installing options Erasing a lost or forgotten password clearing Cmos Replacing the cover and connecting the cables User Guide Creating and using the Product Recovery disc Recovering softwarePerforming backup and recovery operations Using the Rescue and Recovery workspace Creating and using rescue media To create rescue media, do the following Creating and using a Recovery Repair disketteRecovering or installing device drivers Solving recovery problems Setting a rescue device in the startup sequenceUser Guide Starting the Setup Utility program Using the Setup UtilityViewing and changing settings Using passwordsUser Password Password considerationsAdministrator Password Setting, changing, and deleting a passwordSelecting a temporary startup device Using Security Profile by DeviceSelecting a startup device Changing the startup device sequence Advanced settingsExiting from the Setup Utility program Updating system programs Using system programsUpdating flashing Bios from a diskette User Guide Symptom Action Troubleshooting and diagnosticsBasic troubleshooting Diagnostic programs PC-Doctor for DOS PC-Doctor for WindowsCreating diagnostic diskettes Optical mouse Cleaning the mousePC-Doctor for Windows PE Non-optical mouse Troubleshooting and diagnostics User Guide Information resources Getting information, help, and serviceOnline Books folder Lenovo CareWarranty and safety Access HelpCalling for service Help and serviceUsing the documentation and diagnostic programs Purchasing additional services Using other servicesBasic AT commands Appendix A. Manual modem commandsSet Pulse dial as default Low speaker volumeSet Tone Dial as default Internal speaker on until carrier detectedExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 2 commands Fax Class 1 commandsVoice commands Appendix A. Manual modem commands User Guide Appendix B. Notices Trademarks Television output noticeIndex 14, 22, 23 Page Part Number