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Lenovo 1987, 1993, 1995, 1986, 1985 Locating parts on the system board, System board part locations

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

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Locating parts on the system board

Figure 4 “System board part locations” on page 12 shows the locations of the parts on the system board.

Figure 4. System board part locations

1Microprocessor

2Microprocessor fan connector

3Memory slot 1 (DIMM1)

4Memory slot 2 (DIMM3)

5Memory slot 3 (DIMM2)

6Memory slot 4 (DIMM4)

7Thermal sensor connector

824-pin power connector

9Clear CMOS (Complementary Metal Oxide Semiconductor) /Recovery jumper

10Battery

11Power fan connector

12Parallel connector

13SATA 3.0 connectors (4)

14Front panel connector (for connecting LED indicators and power switch)

15Front USB connector 1 (for connecting USB ports 1 and 2 on the front bezel)

16Front USB connectors 2 and 3 (for connecting additional USB devices)

17Cover presence switch connector (Intrusion switch connector)

18Serial (COM2) connector

19Internal speaker connector

20Front audio connector

21PCI card slot

22PCI Express x1 card slots (2)

23PCI Express x16 graphics card slot

24System fan connector

25PS/2 keyboard and mouse connector

264-pin power connector

12ThinkCentre User Guide

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Lenovo 1987, 1993, 1995, 1986, 1985, 1994, 1982, 1983, 1990, 1992 Locating parts on the system board, System board part locations

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 Power supply Security featuresPreinstalled software programs Preinstalled operating system Specifications Software overviewSoftware provided by Lenovo Lenovo Solution Center Lenovo ThinkVantage ToolsLenovo Welcome Fingerprint Software Product Recovery ThinkVantage Password ManagerThinkVantage Power 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 your computer Frequently asked questionsUsing the keyboard Using Windows shortcut keys Using a fingerprint reader Using the wheel mouseAdjusting audio About your computer audio Setting the volume from the desktop Setting the volume from Control PanelUsing CDs and DVDs Adding the volume icon to the taskbar Playing a CD or DVD Recording a CD or DVD Accessibility and comfort You and your computerArranging your workspace Comfort Glare and lighting Air circulationElectrical outlets and cable lengths Voltage-selection switch Replacement power cordsRegister your computer with Lenovo 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 Windows passwords Configuring the fingerprint readerUsing and understanding firewalls Protecting data against viruses Security ThinkCentre User Guide Installing or replacing hardware Installing or replacing hardwareInstalling external options 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 Password considerations Power-On PasswordAdministrator Password Hard Disk Password Erasing lost or forgotten passwords clearing Cmos Enabling or disabling a device Enabling ErP compliance mode Selecting a startup deviceSelecting a temporary 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 Preventing problems Keeping your computer currentGetting the latest device drivers for your computer Updating your operating system Using System Update Basics Cleaning your computer ComputerKeyboard 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 DVD movie will not play No audio or intermittent audio while playing DVD moviePlayback is very slow or choppy Invalid disc or no disc found message Intermittent problems Keyboard, mouse, or pointing device problemsAll or some keys on the keyboard do not work Monitor problems Wireless keyboard does not workMouse or pointing device 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 Wake on LAN feature is not working Your computer cannot connect to the networkClick Start Control Panel Click Hardware and Sound Adapter stops working for no apparent reason Wireless LAN problem Wireless WAN problemBluetooth problems Option problems An option that was just installed does not workSound does not come from the Bluetooth headphone An option that previously worked does not work now Performance and lockup problems Click Disk CleanupInsufficient free hard disk drive space 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 Help and service Using the documentation and diagnostic programCalling for service Lenovo Support Web site Using other services Purchasing additional services ThinkCentre User Guide Appendix A. Notices 107 Trademarks Appendix B. Regulatory information Export classification noticeTelevision output notice Electronic emissions notices Industry Canada Class B emission compliance statement Additional regulatory information ThinkCentre User Guide Appendix C. Weee and recycling information Important Weee InformationRecycling 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