Acer LE1, 8920 Series manual Finding your comfort zone, Taking care of your vision

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If you have these symptoms, or any other recurring or persistent discomfort and/or pain related to computer use, consult a physician immediately and inform your company's health and safety department.

The following section provides tips for more comfortable computer use.

Finding your comfort zone

Find your comfort zone by adjusting the viewing angle of the monitor, using a footrest, or raising your sitting height to achieve maximum comfort. Observe the following tips:

refrain from staying too long in one fixed posture

avoid slouching forward and/or leaning backward

stand up and walk around regularly to remove the strain on your leg muscles

take short rests to relax your neck and shoulders

avoid tensing your muscles or shrugging your shoulders

install the external display, keyboard and mouse properly and within comfortable reach

if you view your monitor more than your documents, place the display at the center of your desk to minimize neck strain

Taking care of your vision

Long viewing hours, wearing incorrect glasses or contact lenses, glare, excessive room lighting, poorly focused screens, very small typefaces and low-contrast displays could stress your eyes. The following sections provide suggestions on how to reduce eyestrain.

Eyes

Rest your eyes frequently.

Give your eyes regular breaks by looking away from the monitor and focusing on a distant point.

Blink frequently to keep your eyes from drying out.

Display

Keep your display clean.

Keep your head at a higher level than the top edge of the display so your eyes point downward when looking at the middle of the display.

Adjust the display brightness and/or contrast to a comfortable level for enhanced text readability and graphics clarity.

Eliminate glare and reflections by:

placing your display in such a way that the side faces the window or any light source

minimizing room light by using drapes, shades or blinds

using a task light

changing the display's viewing angle

using a glare-reduction filter

using a display visor, such as a piece of cardboard extended from the

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Contents Users Guide Aspire 8920 SeriesPage Turning the product off before cleaning Information for your safety and comfortSafety instructions Using electrical power Product servicing Guidelines for safe battery usagePotentially explosive environments Replacing the battery packMedical devices Additional safety informationTelephone line safety Operating environmentPotentially explosive environments VehiclesMercury advisory Emergency calls Disposal instructionsTips and information for comfortable use Taking care of your vision Finding your comfort zoneXii Developing good work habitsXiii Turning your computer on and off Basic care and tips for using your computerFirst things first Your guidesTaking care of your AC adapter Taking care of your computerPlease refer to Frequently asked questions on Taking care of your battery packCleaning and servicing Contents Video Securing your computer Troubleshooting To launch Acer Empowering Technology Acer Empowering TechnologyLaunching Acer Empowering Technology To launch Acer Empowering Technology applications Click Create a new password Empowering Technology passwordTo set the Empowering Technology password Click OK to set the password Acer eAudio Management To switch between power plans Acer ePower ManagementUsing power plans To create a new power planBattery status To edit a power planTo delete a power plan Empowering Technology Acer eDataSecurity Management for selected models Empowering Technology Acer eRecovery Management Acer eSettings Management Lets you set an asset tag for your system Windows Mobility Center Top view Your Acer notebook tourIcon Item Description # Icon Description Closed front viewIcon Description Left viewRight view Rear view Base view Wlan SpecificationsEnglish Function Description IndicatorsIcon Function Description Easy-launch buttonsTouchpad Function Left Right Main touchpad 2 Center button Button Touchpad basicsFunction Left Right Main touchpad Center button Button Fn + F12 Using the keyboardLock keys and separate numeric keypad Lock key DescriptionKeyDescription Windows keysHotkeys Hotkey Icon Function Description Fn + ← Euro symbolSpecial keys US dollar signEjecting the optical CD or DVD drive tray Using a computer security lockChannel AudioAcer CineDash media console TubaAcer PureZone Using Dolby Home Theater for surround/multi-channel soundSet playback as digital output Display VideoAcer Bio-Protection for selected models Using the system utilitiesAcer GridVista dual-display compatible Launch Manager No audio is heard from the computer Frequently asked questionsNothing appears on the screen Printer does not work Want to set up my location to use the internal modemKeyboard does not respond English Before you call Requesting serviceInternational Travelers Warranty ITW Maximizing the batterys life Battery packBattery pack characteristics Installing and removing the battery pack Optimising battery life Charging the batteryChecking the battery level Situation Recommended Action Battery-low warningAcer Arcade Deluxe Player controls General controlsCinema Navigation controlsPlaying a video file VideosRecent Videos Advanced Live UpdateSettings HomeMediaDVD PhotoAbout AlbumsHelp Editing Pictures Slideshow settingsBackground mode MusicPreparing the computer Disconnecting from the desktopTaking your notebook PC with you Moving aroundWhat to take with you Taking the computer homeWhat to bring to meetings Special considerations Setting up a home officeTraveling with the computer What to bring with you Traveling internationally with the computerSecuring your computer Using a computer security lockUsing passwords Setting passwords Entering passwordsFax/data modem Expanding through optionsConnectivity options Consumer Infrared CIR Built-in network featureHigh-Definition Multimedia Interface Universal Serial Bus USBEjecting an ExpressCard ExpressCardInserting an ExpressCard Installing memory Acer DVB-T digital antenna Connecting your TV and AV-in cables for selected modelsPAL/SECAM and Ntsc systems To set up the antenna AV-in cable Password Bios utilityBoot sequence Enable disk-to-disk recoveryRegion code Country or region Using softwarePlaying DVD movies Power management Burn backup discs Acer eRecovery ManagementManage user backups Create a user backupRestore Error messages Corrective action Troubleshooting tipsError messages English Operation conditions Regulations and safety noticesFCC notice Declaration of Conformity for EU countries Modem noticesRemarque à lintention des utilisateurs canadiens List of applicable countries TBREnglish Macrovision copyright protection notice Laser compliance statementLCD pixel statement Article 3.1b EMC Article 3.1a Health and SafetyRadio device regulatory notice General European Union EUFCC RF safety requirement English LCD panel ergonomic specifications CD-ROM IndexEnglish