Apple MacBook Pro (17-inch, Late 2011) User Manual download pdf (Page 74)

74 Chapter 5 Last, but Not Least

Hearing damagePermanenthearinglossmayoccurifearbudsorheadphonesare

usedathighvolume.Youcanadaptovertimetoahighervolumeofsoundthatmay

soundnormalbutcanbedamagingtoyourhearing.Ifyouexperienceringinginyour

earsormuedspeech,stoplisteningandhaveyourhearingchecked.Thelouderthe

volume,thelesstimeisrequiredbeforeyourhearingcouldbeaected.Hearingexperts

suggestthattoprotectyourhearing:

Â Limittheamountoftimeyouuseearbudsorheadphonesathighvolume.

Â Avoidturningupthevolumetoblockoutnoisysurroundings.

Â Turnthevolumedownifyoucan’thearpeoplespeakingnearyou.

High-risk activitiesThiscomputerisnotintendedforuseintheoperationofnuclear

facilities,aircraftnavigationorcommunicationssystems,airtraccontrolsystems,or

foranyotheruseswherethefailureofthecomputercouldleadtodeath,personal

injury,orsevereenvironmentaldamage.

Laser Information for Optical Disc Drives

WARNING: Makingadjustmentsorperformingproceduresotherthanthosespecied

inyourequipment’smanualmayresultinhazardousradiationexposure.

Theopticaldiscdriveinyourcomputercontainsalaserthatissafeinnormalusebut

thatmaybeharmfultoyoureyesifdisassembled.Foryoursafety,havethisequipment

servicedonlybyanAppleAuthorizedServiceProvider.

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Apple MacBook Pro (17-inch, Late 2011) User Manual Page 74