Lenovo 4105, 4157VJU, 4217 manual Arranging your workspace, Comfort, Glare and lighting

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Chapter 2. Arranging your workspace

To get the most from your computer, arrange both the equipment you use and your work area to suit your needs and the kind of work you do. Your comfort is of foremost importance, but light sources, air circulation, and the location of electrical outlets can also affect the way you arrange your workspace.

Comfort

Although no single working position is ideal for everyone, here are a few guidelines to help you find a position that suits you best.

Sitting in the same position for a long time can cause fatigue. The backrest and seat of your chair should adjust independently and provide good support. The seat should have a curved front to relieve pressure on the thighs. Adjust the seat so that your thighs are parallel to the floor and your feet are either flat on the floor or on a footrest.

When using the keyboard, keep your forearms parallel to the floor and your wrists in a comfortable position. Use a light touch on the keyboard and your hands and fingers relaxed. Change the angle of the keyboard for maximum comfort by adjusting the position of the keyboard feet.

Adjust the monitor so the top of the screen is at, or slightly below, eye level. Place the monitor at a comfortable viewing distance, usually 51 to 61 cm (20 to 24 inches), and position it so you can view it without having to twist your body. Also, position other equipment you use regularly, such as the telephone or a mouse, within easy reach.

Glare and lighting

Position the monitor to minimize glare and reflections from overhead lights, windows, and other light sources. Reflected light from shiny surfaces can cause annoying reflections on your monitor screen. Place the monitor at right angles to windows and other light sources, when possible. Reduce overhead lighting, if necessary, by turning off lights or using lower wattage bulbs. If you install the monitor near a window, use curtains or blinds to block the sunlight. You can adjust the brightness and contrast controls on the monitor as the room lighting changes throughout the day.

Where it is impossible to avoid reflections or to adjust the lighting, an antiglare filter placed over the screen might be helpful. However, these filters might affect the clarity of the image on the screen; try them only after you have exhausted other methods of reducing glare.

Dust buildup compounds problems associated with glare. Remember to clean your monitor screen periodically using a soft cloth as directed in your monitor documentation.

© Copyright Lenovo 2009, 2011

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Contents ThinkStation User Guide Fifth Edition December Copyright Lenovo 2009 Contents Index Iii IntroductionIv ThinkStation User Guide Important safety information ThinkStation User Guide Arranging your workspace ComfortGlare and lighting Electrical outlets and cable lengths Air circulationConnecting your computer Setting up your computerLine Setting up your computer If you have powered speakers with an ac power adapter Turning on computer power Installing other operating systems Finishing the software installationCompleting important tasks Updating your operating systemInstalling the computer on a rack shelf Installing external optionsFeatures Updating your antivirus softwareInput/Output I/O features System management featuresInternal drives Video subsystemSecurity features PowerSoftware programs, preinstalled Operating system, preinstalledSpecifications Software overview Lenovo Solution CenterSoftware provided with your Windows operating system Software provided by LenovoPC-Doctor for Rescue and Recovery Lenovo ThinkVantage ToolboxAdobe Reader Starting the Setup Utility program Using the Setup UtilityViewing and changing settings Using passwordsAdministrator Password User PasswordSetting, changing, and deleting a password Enabling or disabling a deviceExiting from the Setup Utility program Advanced settingsSelecting a startup device Selecting a temporary startup deviceThinkStation User Guide Installing Sata hard disk drives and configuring RAID Installing hard disk drives and configuring RAIDInstalling Sata hard disk drives Select Devices IDE Drives Setup and press EnterDeleting RAID volumes Creating RAID volumesInstalling SAS hard disk drives and configuring RAID Installing SAS hard disk drivesFrom the RAID Config menu, select Create array Entering the Marvell Bios Setup to configure SAS RAIDConfiguring the Marvell Bios Setup to delete an array From the RAID Config menu, select Spare ManagementFrom the RAID Config menu, select Delete array Using system programs Updating flashing the Bios from a discUpdating system programs Updating flashing the Bios from your operating system Recovering from a POST/BIOS update failureClick Downloads and drivers Troubleshooting and diagnostics Basic troubleshootingSymptom Action Diagnostic programs Troubleshooting and diagnostics PC-Doctor for DOS Cleaning an optical mouseTroubleshooting and diagnostics ThinkStation User Guide Creating and using recovery media Recovery informationCreating recovery media Using recovery mediaPerforming a backup operation Performing backup and recovery operationsPerforming a recovery operation Using the Rescue and Recovery workspaceClick the Restore your system from a backup icon Creating and using rescue media Using rescue media Installing or reinstalling device driversCreating rescue media Solving recovery problems Setting a rescue device in the startup sequenceInformation resources Getting information, help, and serviceOnline Books folder Lenovo ThinkVantage ToolsHelp and service Safety and WarrantyUsing the documentation and diagnostic programs Lenovo Support Web siteUsing other services Calling for servicePurchasing additional services Basic AT commands Appendix A. Manual modem commandsExtended AT commands Modem hangs up, returns to the Command Mode after Command Function Modem ignores the DTR signalGuard tone disabled Enable RTS/CTS hardware flow controlFax Class 1 commands MNP/V.42/V.42bis/V.44 commandsFax Class 2 commands Voice commands Appendix B. System memory speed Dimm type and speed PC3-8500U Appendix C. Notices Television output notice European conformance CE mark TrademarksRecycling information for Brazil Appendix C. Notices ThinkStation User Guide Index Lenovo Solution Center Flashing Bios Antivirus software ThinkStation User Guide Page 53Y4306
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