Lenovo 8158, 8215, 8157, 8159, 8156, 9210, 9211 Heat and product ventilation, CD and DVD drive safety

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Heat and product ventilation

Computers generate heat when turned on and when batteries are charging. Notebook PCs can generate a significant amount of heat due to their compact size. Always follow these basic precautions:

vDo not leave the base of your computer in contact with your lap or any part of your body for an extended period when the computer is functioning or when the battery is charging. Your computer produces some heat during normal operation. Extended contact with the body could cause discomfort or, potentially, a skin burn.

vDo not operate your computer or charge the battery near flammable materials or in explosive environments.

vVentilation slots, fans and/or heat sinks are provided with the product for safety, comfort, and reliable operation. These features might inadvertently become blocked by placing the product on a bed, sofa, carpet, or other flexible surface. Never block, cover or disable these features.

You should inspect your desktop computer for dust accumulation at least once every three months. Before inspecting your computer, turn off the power and unplug the computer’s power cord from the electrical outlet; then remove any dust from vents and perforations in the bezel. If you notice external dust accumulation, you should also examine and remove dust from the inside of the computer including heat sink inlet fins, power supply vents, and fans. Always turn off and unplug the computer before opening the cover. If possible, avoid operating your computer within 2 feet of high-traffic areas. If you must operate your computer in or near a high-traffic area, you should inspect and, if necessary, clean your computer more frequently.

For your safety and to maintain optimum computer performance, always follow these basic precautions with your desktop computer:

vKeep the cover closed whenever the computer is plugged in.

vRegularly inspect the outside of the computer for dust accumulation.

vRemove dust from vents and any perforations in the bezel. More frequent cleanings might be required for computers in dusty or high-traffic areas.

vDo not block or restrict airflow into the front of the computer.

vDo not block the airflow vents on the back of the computer.

vDo not store or operate your computer inside furniture, as this might increase the risk of overheating.

vAirflow temperatures into the computer should not exceed 35° C (95° F).

vDo not use non-ThinkCentre air filtration devices.

CD and DVD drive safety

CD and DVD drives spin discs at a high speed. If a CD or DVD is cracked or otherwise physically damaged, it is possible for the disc to break apart or even shatter when the CD drive is in use. To protect against possible injury due to this situation, and to reduce the risk of damage to your machine, do the following:

vAlways store CD/DVD discs in their original packaging

vAlways store CD/DVD discs out of direct sunlight and away from direct heat sources

vRemove CD/DVD discs from the computer when not in use

vDo not bend or flex CD/DVD discs, or force them into the computer or their packaging

Important safety information

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Contents Page Page Page Page Contents Iv User Guide Conditions that require immediate action Important safety information Service General safety guidelinesExtension cords and related devices Power cords and power adaptersBatteries Plugs and outletsHeat and product ventilation CD and DVD drive safetyTo connect To disconnect Additional safety informationLithium battery notice Laser compliance statement Modem safety informationPower supply statement Information resources OverviewXiv User Guide Features Installing optionsMemory Expansion Available options Specifications Handling static-sensitive devices Supported operating positionsTools required Installing external options Locating connectors on the rear of your computer Obtaining device drivers Connector DescriptionOpening the cover Locating components Accessing system board components and drives Identifying parts on the system board Installing memory What to do next Installing PCI adaptersInstalling internal drives Drive specifications Installing a drive in bay Installing a diskette drive in bay User Guide Connecting drives Security features Connecting an additional serial ATA hard disk driveChanging the battery Integrated cable lock Password protectionErasing a lost or forgotten password clearing Cmos Closing the cover and connecting the cables User Guide Using passwords Using the Setup UtilityStarting the Setup Utility program Viewing and changing settingsIDE Drive User Password Password considerationsUser Password Administrator PasswordResetting the hard disk drive and power-on password IDE Drive Master PasswordSetting, changing, and deleting a password Changing the startup device sequence Using Security Profile by DeviceSelecting a startup device Selecting a temporary startup deviceExiting from the Setup Utility program Advanced settingsUser Guide System program Updating flashing Bios from a diskette or CD-ROMAppendix A. Updating system programs Recovering from a POST/BIOS update failure Updating flashing Bios from your operating systemCleaning a mouse with a ball Appendix B. Cleaning the mouseCleaning an optical mouse 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 Password lost or forgotten Page Part Number 39J8170
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