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Lenovo 1982, 1993, 1995, 1986, 1985, 1987, 1994, 1983, 1990, 1992 manual Removing the front fan assembly

Models: 1992 1990 1983 1982 1994 1987 1985 1986 1995 1993

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5.Release the two tabs 1 that attach the front fan assembly to the chassis as shown and then completely remove the front fan assembly from the chassis.

Figure 41. Removing the front fan assembly

54ThinkCentre User Guide

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Lenovo 1982, 1993, 1995, 1986, 1985, 1987, 1994, 1983, 1990, 1992 manual Removing the front fan assembly

Contents

ThinkCentre User Guide Third Edition June Copyright Lenovo 2011 Contents Appendix A. Notices 107 Index Iv ThinkCentre User Guide Important safety information Service and upgradesStatic electricity prevention Power cords and power adapters Extension cords and related devices Plugs and outlets External devicesHeat and product ventilation Modem safety information Operating environment Power supply statement Cleaning and maintenanceLaser compliance statement ThinkCentre User Guide Features Product overview System management features Input/Output I/O featuresConnectivity Preinstalled software programs Power supplySecurity features Preinstalled operating system Specifications Software overviewSoftware provided by Lenovo Lenovo Welcome Lenovo Solution CenterLenovo ThinkVantage Tools Fingerprint Software ThinkVantage Power Manager Product RecoveryThinkVantage Password Manager ThinkVantage Rescue and Recovery ThinkVantage System Update Adobe Reader Antivirus softwareLocations Front connector, control, and indicator locations Locating connectors on the rear of your computer Rear connector locations Connector Description Locating components Component locations Locating parts on the system board System board part locations Locating internal drives Drive bay locations Machine type and model label Machine type and model label Using the keyboard Using your computerFrequently asked questions Using Windows shortcut keys Adjusting audio Using a fingerprint readerUsing the wheel mouse About your computer audio Using CDs and DVDs Setting the volume from the desktopSetting the volume from Control Panel Adding the volume icon to the taskbar Playing a CD or DVD Recording a CD or DVD Arranging your workspace Accessibility and comfortYou and your computer Comfort Glare and lighting Air circulationElectrical outlets and cable lengths Register your computer with Lenovo Voltage-selection switchReplacement power cords Moving your computer to another country or region ThinkCentre User Guide Security features Security Installing a padlock Locking the computer cover Using passwords Bios passwordsAttaching an integrated cable lock Using and understanding firewalls Windows passwordsConfiguring the fingerprint reader Protecting data against viruses Security ThinkCentre User Guide Installing external options Installing or replacing hardwareInstalling or replacing hardware Handling static-sensitive devices Removing the computer cover Removing the computer cover Removing and reinstalling the front bezel Installing or replacing a PCI cardWhat to do next Opening the PCI card latch Removing a PCI card Installing or replacing a memory module Installing a PCI card Removing a memory module Installing or replacing the optical drive Installing a memory module Removing the optical drive Installing or replacing the card reader Installing the optical drive Installing the card reader Removing the card reader retainer Installing the card reader Replacing the card reader Removing the card reader Replacing the battery Install a new battery Replacing the power supply assembly Replacing the heat sink and fan assembly Removing the screws for the power supply assembly Removing the heat sink and fan assembly Reinstalling the heat sink and fan assembly Replacing the microprocessor Accessing the microprocessor Replacing the primary hard disk drive Removing the primary hard disk drive Installing the primary hard disk drive Replacing the secondary hard disk drive Removing the secondary hard disk drive Replacing the front fan assembly Installing the secondary hard disk drive Removing the front fan assembly Installing the front fan assembly Replacing the rear fan Removing the rear fan Replacing the front audio and USB assembly Installing the rear fan Replacing the internal speaker Removing the old internal speaker Installing a new internal speaker Replacing the keyboard or mouse Completing the parts replacement Connecting the USB keyboard or mouse Reinstalling the computer cover Obtaining device drivers Recovery information Creating and using recovery mediaCreating recovery media Using recovery media Performing backup and recovery operationsPerforming a backup operation Performing a recovery operation Using the Rescue and Recovery workspaceClick the Restore your system from a backup icon Creating and using a rescue medium Using a rescue mediumCreating a rescue medium Reinstalling preinstalled applications and device drivers Reinstalling preinstalled applicationsReinstalling preinstalled device drivers Reinstalling software programs Reinstalling device driversSolving recovery problems Recovery information ThinkCentre User Guide Using the Setup Utility program Starting the Setup Utility programViewing and changing settings Administrator Password Password considerationsPower-On Password Hard Disk Password Erasing lost or forgotten passwords clearing Cmos Enabling or disabling a device Selecting a temporary startup device Enabling ErP compliance modeSelecting a startup device Selecting or changing the startup device sequence Exiting the Setup Utility program ThinkCentre User Guide Using system programs Updating flashing the Bios from a discUpdating system programs Updating flashing the Bios from your operating system Recovering from a POST/BIOS update failureClick Downloads and drivers Getting the latest device drivers for your computer Preventing problemsKeeping your computer current Updating your operating system Using System Update Basics Keyboard Cleaning your computerComputer Optical mouse Good maintenance practices Cleaning a glass-screen surfaceMoving your computer Troubleshooting and diagnostics Basic troubleshooting Troubleshooting procedure Troubleshooting Audio problems No audio in Windows CD problems Sound comes from one external speaker onlyNo audio in DOS applications or games DVD problems CD or DVD does not workBlack screen instead of DVD video Playback is very slow or choppy DVD movie will not playNo audio or intermittent audio while playing DVD movie Invalid disc or no disc found message Intermittent problems Keyboard, mouse, or pointing device problemsAll or some keys on the keyboard do not work Mouse or pointing device does not work Monitor problemsWireless keyboard does not work Pointer on the screen does not move smoothly with the mouse Wrong characters appear on the screen Image appears to be flickering Networking problems Ethernet problemsImage is discolored Click Start Control Panel Click Hardware and Sound Wake on LAN feature is not workingYour computer cannot connect to the network Adapter stops working for no apparent reason Wireless LAN problem Wireless WAN problemBluetooth problems Sound does not come from the Bluetooth headphone Option problemsAn option that was just installed does not work An option that previously worked does not work now Insufficient free hard disk drive space Performance and lockup problemsClick Disk Cleanup Click Start Computer Printer problems Excessive number of fragmented filesInsufficient memory Serial port problems Software problemsSoftware does not work as expected USB problems Diagnostic programs Lenovo Solution Center Lenovo ThinkVantage Toolbox Creating a diagnostic disc Running the diagnostic program from a diagnostic discPC-Doctor for DOS ThinkCentre User Guide Getting information, help, and service Calling for service Help and serviceUsing the documentation and diagnostic program Lenovo Support Web site Using other services Purchasing additional services ThinkCentre User Guide Appendix A. Notices 107 Trademarks Television output notice Appendix B. Regulatory informationExport classification notice Electronic emissions notices Industry Canada Class B emission compliance statement Additional regulatory information ThinkCentre User Guide Recycling information Appendix C. Weee and recycling informationImportant Weee Information 113 Battery recycling information for Taiwan Recycling information for Brazil Battery recycling information for the European Union ThinkCentre User Guide China RoHS Turkish RoHS Ukraine RoHS117 India RoHS Index 119 Memory module 121 ThinkCentre User Guide Page 1P0B07068