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Lenovo 8146, 8423, 8427, 8422, 8143, 8144, 8097 manual Power supply statement

Models: 8144 8097 8143 8422 8427 8423 8146

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Power supply statement

Never remove the cover on a power supply or any part that has the following label attached.

Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician.

xiiUser Guide

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Lenovo 8146, 8423, 8427, 8422, 8143, 8144, 8097 manual Power supply statement

Contents

User Guide Types 8097, 8143, 8144 Types 8422, 8423 Page User Guide Types 8097, 8143, 8144 Types 8422, 8423 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 ventilationTo connect To disconnect Additional safety informationLithium battery notice Modem safety information Laser compliance statementPower supply statement Overview Information resourcesXiv User Guide Installing options FeaturesMemory Operating systems, preinstalled varies by model type Available options Specifications Handling static-sensitive devices Installing external optionsTools required 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 a memory module What to do next Installing adapters Installing internal drives Drive specifications Installing a drive in bay 1 or bay Installing a hard disk drive in bay Installing options Connecting drives Connecting the first optical driveConnecting a serial ATA hard disk drive Installing security featuresPadlock Password protectionChanging the battery Erasing a lost or forgotten password clearing Cmos Replacing the cover and connecting the cables Viewing and changing settings Using the Setup Utility programStarting the Setup Utility program Using passwordsIDE Drive User Password User PasswordAdministrator Password IDE Drive Master PasswordSelecting a startup device Setting, changing, and deleting a passwordUsing Security Profile by Device Changing the startup sequence Exiting from the Setup Utility programSelecting a temporary startup device Appendix A. Updating system programs Updating flashing Bios from a diskette or CD-ROMUpdating flashing Bios from your operating system System programsRecovering from a POST/BIOS update failure Cleaning a mouse with a ball Appendix B. Cleaning the mouseCleaning an optical mouse 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 Page Page Part Number 19R0450