IBM 6824, 2289 manual Changing the battery

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1 Padlock loop

2 Integrated cable lock 3 Rope clip

What to do next

vTo work with another option, go to the appropriate section.

vTo complete the installation, go to “Replacing the cover and connecting the cables” on page 21.

Changing the battery

Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as parallel-port assignments (configuration). A battery keeps this information active when you turn off the computer.

The battery normally requires no charging or maintenance throughout its life; however, no battery lasts forever. If the battery fails, the date, time, and configuration information (including passwords) are lost. An error message is displayed when you turn on the computer.

Refer to “Lithium battery notice” on page vi for information about replacing and disposing of the battery.

To change the battery:

1.Turn off the computer and all attached devices.

20User Guide

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Contents User Guide Type 2289 Page User Guide Type 2289 Page Appendix B. Manual modem Iv User Guide Safety Information To connect To disconnectConnexion Déconnexion Lithium battery noticeModem safety information Laser compliance statement Consignes de sécurité relatives au modemViii User Guide Overview Information resourcesUser Guide Installing options FeaturesAudio subsystem Security features Specifications Handling static-sensitive devices Available optionsTools 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 driversRemoving the cover Locating components Identifying parts on the system boardInstalling memory What to do next Installing adapters Installing internal drives Drive specifications Installing a drive Connecting the first IDE CD-ROM drive or DVD-ROM drive Connecting an additional IDE CD-ROM drive or DVD-ROM drive Physical securityChanging the battery Replacing the cover and connecting the cables Erasing a lost or forgotten password clearing Cmos Installing options User Guide Using the IBM Setup Utility program Starting the IBM Setup Utility programViewing and changing settings Exiting from the IBM Setup Utility programUser password Administrator passwordSetting, changing, and deleting a password Using Security Profile by DeviceChanging the startup device sequence Selecting a startup deviceSelecting a temporary startup device User Guide Updating flashing Bios from a diskette Updating flashing Bios from your operating systemAppendix A. Updating System Programs System programsRecovering from a POST/BIOS update failure Appendix B. Manual modem commands Basic AT commandsExtended AT commands Guard tone disabled Enable RTS/CTS hardware flow controlUS setting for off-hook-to-on-hook ratio Force DSR Signal High onFax Class 2 commands MNP/V.42/V.42bis/V.44 commandsFax Class 1 commands Voice commands User Guide Appendix C. System address maps System memory mapAddress map Address range Address range hex Size Description DecimalLPT3 DMA I/O address map Address hex Description Bits Byte pointerAddress hex Description Bits Byte pointer System resource DMA channel Data width System resourceUser Guide Appendix E. Notices Television output noticeTrademarks IBMIndex DVDPage Page Part Number 49P1040