Lenovo 8146, 8423, 8427 Important safety information, Conditions that require immediate action

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Important safety information

Note

Please read important safety information first.

This information can help you safely use your ThinkCentre® or ThinkPad® personal computer. Follow and retain all information included with your computer. The information in this document does not alter the terms of your purchase agreement or the Lenovo™ Statement of Limited Warranty.

Customer safety is important. Our products are developed to be safe and effective. However, personal computers are electronic devices. Power cords, power adapters, and other features can create potential safety risks that can result in physical injury or property damage, especially if misused. To reduce these risks, follow the instructions included with your product, observe all warnings on the product and in the operating instructions, and review the information included in this document carefully. By carefully following the information contained in this document and provided with your product, you can help protect yourself from hazards and create a safer computer work environment.

Note: This information includes references to power adapters and batteries. In addition to mobile personal computers, some products (such as speakers and monitors) ship with external power adapters. If you have such a product, this information applies to your product. In addition, your computer product may contain a coin-sized internal battery that provides power to your system clock even when the machine is unplugged, so the battery safety information applies to all computers.

Conditions that require immediate action

Products can become damaged due to misuse or neglect. Some product damage is serious enough that the product should not be used again until it has been inspected and, if necessary, repaired by an authorized servicer.

As with any electronic device, pay close attention to the product when it is turned on. On very rare occasions, you might notice an odor or see a puff of smoke or sparks vent from your machine. Or you might hear sounds like popping, cracking or hissing. These conditions might merely mean that an internal electronic component has failed in a safe and controlled manner. Or, they might indicate a potential safety issue. However, do not take risks or attempt to diagnose the situation yourself.

Frequently inspect your computer and its components for damage or wear or signs of danger. If you have any question about the condition of a component, do not use the product. Contact the Customer Support Center or the product manufacturer for instructions on how to inspect the product and have it repaired, if necessary.

In the unlikely event that you notice any of the conditions listed below, or if you have any safety concerns with your product, stop using the product and unplug it from the power source and telecommunication lines until you can

© Lenovo 2005. Portions © IBM Corp. 2005.

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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 Conditions that require immediate action Important safety informationService General safety guidelinesExtension cords and related devices Power cords and power adaptersBatteries Plugs and outletsHeat and product ventilation CD and DVD drive safetyLithium battery notice Additional safety informationTo connect To disconnect Laser compliance statement Modem safety informationPower supply statement Information resources OverviewXiv User Guide Features Installing optionsMemory Operating systems, preinstalled varies by model type Available options Specifications Tools required Installing external optionsHandling static-sensitive devices Locating the connectors on the front of your computer Locating the connectors on the rear of your computer Obtaining device drivers Connector DescriptionRemoving the cover Identifying parts on the system board Locating componentsInstalling 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 the first optical drive Connecting drivesInstalling security features Connecting a serial ATA hard disk driveChanging the battery Password protectionPadlock Erasing a lost or forgotten password clearing Cmos Replacing the cover and connecting the cables Using passwords Using the Setup Utility programStarting the Setup Utility program Viewing and changing settingsIDE Drive Master Password User PasswordAdministrator Password IDE Drive User PasswordUsing Security Profile by Device Setting, changing, and deleting a passwordSelecting a startup device Selecting a temporary startup device Exiting from the Setup Utility programChanging the startup sequence System programs Updating flashing Bios from a diskette or CD-ROMUpdating flashing Bios from your operating system Appendix A. Updating system programsRecovering from a POST/BIOS update failure Cleaning an optical mouse Appendix B. Cleaning the mouseCleaning a mouse with a ball User Guide Basic AT commands Appendix C. Manual modem commandsInternal speaker on until carrier detected Low speaker volumeSet Pulse dial as default Set Tone Dial as defaultExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 2 commands Fax Class 1 commandsVoice commands Appendix C. Manual modem commands User Guide Appendix D. Notices Trademarks Television output noticeIndex Page Page Part Number 19R0450
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