Lenovo 8159, 8215, 8157, 8158, 8156, 9210, 9211, 8116, TC A52-8155 manual Installing memory

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Installing memory

Your computer has two connectors for installing double date rate dual inline memory modules (DDR DIMMs) that provide up to a maximum of 4 GB of system memory.

When installing memory modules, the following rules apply:

vUse 1.8 V, 240-pin, double data rate 2 synchronous dynamic random access memory (DDR2 SDRAM).

vUse 256 MB, 512 MB, 1 GB, or 2 GB DIMMs in any combination.

Note: Only DDR2 SDRAM DIMMs can be used.

To install a memory module:

1.Open the computer cover. See “Opening the cover” on page 10.

2.Access the system board. See “Accessing system board components and drives” on page 12.

3.Locate the memory connectors. See “Identifying parts on the system board” on page 13.

4.Open the retaining clips.

5.Position the memory module over the memory connector. Make sure that the notch 1 on the memory module aligns correctly with the connector key2 on the system board. Push the memory module straight down into the connector until the retaining clips close.

6.Reinstall the PCI riser assembly if it was removed.

14User Guide

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Contents Page Page Page Page Contents Iv User Guide Important safety information Conditions that require immediate actionGeneral safety guidelines ServicePower cords and power adapters Extension cords and related devicesPlugs and outlets BatteriesCD and DVD drive safety Heat and product ventilationAdditional safety information Lithium battery noticeTo connect To disconnect Modem safety information Laser compliance statementPower supply statement Overview Information resourcesXiv User Guide Installing options FeaturesMemory Expansion Available options Specifications Supported operating positions Tools requiredHandling static-sensitive devices Installing external options Locating connectors on the rear of your computer Connector Description Obtaining device driversOpening the cover Locating components Accessing system board components and drives Identifying parts on the system board Installing memory Installing PCI adapters What to do nextInstalling internal drives Drive specifications Installing a drive in bay Installing a diskette drive in bay User Guide Connecting drives Connecting an additional serial ATA hard disk drive Security featuresIntegrated cable lock Password protection Changing the batteryErasing a lost or forgotten password clearing Cmos Closing the cover and connecting the cables User Guide Viewing and changing settings Using the Setup UtilityStarting the Setup Utility program Using passwordsAdministrator Password Password considerationsUser Password IDE Drive User PasswordIDE Drive Master Password Setting, changing, and deleting a passwordResetting the hard disk drive and power-on password Selecting a temporary startup device Using Security Profile by DeviceSelecting a startup device Changing the startup device sequenceAdvanced settings Exiting from the Setup Utility programUser Guide Updating flashing Bios from a diskette or CD-ROM Appendix A. Updating system programsSystem program Updating flashing Bios from your operating system Recovering from a POST/BIOS update failureAppendix B. Cleaning the mouse Cleaning an optical mouseCleaning a mouse with a ball User Guide Appendix C. Manual modem commands Basic AT commandsSet Tone Dial as default Low speaker volumeSet Pulse dial as default Internal speaker on until carrier detectedExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 1 commands Fax Class 2 commandsVoice commands Appendix C. Manual modem commands User Guide Appendix D. Notices Television output notice TrademarksIndex Password lost or forgotten Page Part Number 39J8170