Acer 7520G, 7220 manual Finding your comfort zone, Taking care of your vision

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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 display's top front edge

Avoid adjusting your display to an awkward viewing angle.

Avoid looking at bright light sources, such as open windows, for extended periods of time.

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Contents Users Guide Aspire 7520G/7520/7220 SeriesPage Page Page Safety instructions Information for your safety and comfortTurning the product off before cleaning Using electrical power Product servicing Guidelines for safe battery usagePotentially explosive environments Replacing the battery packTelephone line safety Additional safety informationOperating environment Medical devicesPotentially explosive environments VehiclesMercury advisory Emergency calls Disposal instructionsXii Tips and information for comfortable useTaking care of your vision Finding your comfort zoneDeveloping good work habits First things first Basic care and tips for using your computerYour guides Turning your computer on and offTaking care of your AC adapter Taking care of your computerCleaning and servicing Taking care of your battery packPlease refer to Frequently asked questions on Contents Using the system utilities Securing your computer Power management Acer eRecovery Management Page Empowering Technology password Acer Empowering TechnologyAcer eNet Management Empowering Technology Using power plans Acer ePower ManagementTo create a new power plan To switch between power plansBattery status To delete a power planAcer eAudio Management Acer ePresentation Management Acer eDataSecurity Management Acer eLock Management Empowering Technology Acer eRecovery Management Empowering Technology Acer eSettings Management Windows Mobility Center Top view Your Acer notebook tourIcon Item Description See Easy-launch buttons on page 26 for Icon Description Closed front viewDVI-D Left viewRear view Right view# Icon Base view Platform SpecificationsStorage Options Compliance Function Description IndicatorsSee Launch Manager on Icon Function Description Easy-launch buttonsTouchpad basics TouchpadFunction Left button Right Main touchpad Center Button Lock keys and separate numeric keypad Using the keyboardLock key Description Fn + F12KeyDescription Windows keysHotkeys Special keys Euro symbolUS dollar sign Ejecting the optical CD or DVD drive tray Using a computer security lockAudio Adjusting the volumeSet playback as digital output Using Dolby Home Theater for surround/multi-channel soundEnglish Acer GridVista dual-display compatible Using the system utilitiesLaunch Manager How do I check for viruses? Norton Internet SecuritySelect Tasks & Scans Nothing appears on the screen Frequently asked questionsNo audio is heard from the computer Keyboard does not respond Want to set up my location to use the internal modemPrinter does not work Recovery CDs International Travelers Warranty ITW Requesting serviceBefore you call Battery pack characteristics Battery packMaximizing the batterys life Installing and removing the battery pack Checking the battery level Charging the batteryOptimising battery life Situation Recommended Action Battery-low warningAcer Arcade for selected models Settings Finding and playing contentDisplay Settings Arcade controls Audio SettingsNavigation controls Player controlsVirtual keyboard Background modeCinema Album Slide Show settingsEditing Pictures Playing a video file VideoCapturing video TV models only SnapshotMusic Time-shift functionality TV for selected modelsRecorded TV TV settingsScheduling recordings Program guideSignal settings Using TeleText functionsChannel settings Recording settingsEnglish Acer Arcade Deluxe for selected models Remote control for selected models Remote functions VideoMagician Starting Acer Arcade DeluxeTV Joy selected models only SportsCap selected models onlyDVDivine DV WizardTaking your notebook PC with you Disconnecting from the desktopMoving around Preparing the computerWhat to bring to meetings Taking the computer homeWhat to take with you Traveling with the computer Setting up a home officeSpecial considerations What to bring with you Traveling internationally with the computerUsing passwords Using a computer security lockSecuring your computer Setting passwords Entering passwordsConnectivity options Expanding through optionsFax/data modem Universal Serial Bus USB Built-in network featureIeee 1394 port Inserting an ExpressCard ExpressCardEjecting an ExpressCard Installing memory PAL/SECAM and Ntsc systems Connecting your TV and AV-in cables for selected modelsAcer DVB-T digital antenna To set up the antenna AV-in cable Boot sequence Bios utilityEnable disk-to-disk recovery PasswordPlaying DVD movies Using softwareRegion code Country or region Power management Create backup Acer eRecovery ManagementRestore and recovery Burn backup discError messages Troubleshooting tipsError messages Corrective action English FCC notice Regulations and safety noticesOperation conditions Remarque à lintention des utilisateurs canadiens Modem noticesDeclaration of Conformity for EU countries List of applicable countries TBREnglish LCD pixel statement Laser compliance statementMacrovision copyright protection notice Radio device regulatory notice General Article 3.1a Health and SafetyEuropean Union EU Article 3.1b EMCEnglish FCC RF safety requirement English ICY70 Federal Communications Comission Declaration of ConformityEN60950-12001 EN600652002 applied to models with TV function Acer Computer Shanghai LimitedLCD panel ergonomic specifications CD-ROM IndexEnglish
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