Lenovo 8121, 8119, 8120, 8107, 8105, 8109, 8108 Heat and product ventilation, CD and DVD drive safety

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Batteries can degrade when they are left unused for long periods of time. For some rechargeable batteries (particularly Lithium Ion batteries), leaving a battery unused in a discharged state could increase the risk of a battery short circuit, which could shorten the life of the battery and can also pose a safety hazard. Do not let rechargeable Lithium-Ion batteries completely discharge or store these batteries in a discharged state.

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 notebook 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 restrict or block any ventilation openings.

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-desktop 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

Important safety information

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Contents Page Page Page Page Contents Iv User Guide Conditions that require immediate action Important safety informationService General safety guidelinesPower cords and power adapters Batteries Extension cords and related devicesPlugs and outlets Heat 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 optionsVideo subsystem Operating systems, preinstalled varies by model type Specifications Available options Supported operating positionsHandling static-sensitive devices Locating the connectors on the front of your computer Installing external optionsLocating the connectors on the rear of your computer Obtaining device drivers Connector DescriptionOpening the cover Identifying parts on the system board Locating componentsInstalling memory Installing options What to do next Installing a PCI adapterWhat to do next Security features Installing an optical driveChanging the battery Integrated cable lock Password protectionUser Guide Erasing a lost or forgotten password clearing Cmos Closing the cover and connecting the cables Exiting from the Setup Utility program Using the Setup Utility programStarting 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 Parallel ATA Using Security Profile by DeviceUsing IDE Drives Setup Selecting a startup deviceChanging the startup sequence Selecting a temporary startup deviceUser Guide System programs 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 Tier 2 CRUs Appendix D. Customer replaceable unit CRU parts listTier 1 CRUs User Guide Appendix E. Notices Trademarks Television output noticeIndex BiosPage Page Part Number 39J8083
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