Apple 21.5" Troubleshooting Guide download pdf (Page 2)

Power specications (27-inch model):

ÂÂ Voltage: 100ÂtoÂ240ÂVÂACÂ

ÂÂ Current:ÂÂ4ÂA,ÂmaximumÂ

ÂÂ Frequency:ÂÂ50ÂtoÂ60ÂHz

WARNING:  YourÂACÂcordÂhasÂaÂthree-wireÂgroundingÂ

plugÂ(aÂplugÂthatÂhasÂaÂthird,ÂgroundingÂpin).ÂThisÂplugÂ

tsÂonlyÂaÂgroundedÂACÂoutlet.ÂIfÂyouÂareÂunableÂtoÂinsertÂ

theÂplugÂintoÂanÂoutletÂbecauseÂtheÂoutletÂisn’tÂgrounded,Â

contactÂaÂlicensedÂelectricianÂtoÂreplaceÂtheÂoutletÂwithÂaÂ

properlyÂgroundedÂoutlet.ÂDoÂnotÂdefeatÂtheÂpurposeÂofÂ

theÂgroundingÂplug.

Hearing damageÂÂPermanentÂhearingÂlossÂmayÂoccurÂifÂ

earbudsÂorÂheadphonesÂareÂusedÂatÂhighÂvolume.ÂYouÂcanÂ

adaptÂoverÂtimeÂtoÂaÂhigherÂvolumeÂofÂsoundÂthatÂmayÂÂ

soundÂnormalÂbutÂcanÂbeÂdamagingÂtoÂyourÂhearing.ÂÂ

IfÂyouÂexperienceÂringingÂinÂyourÂearsÂorÂmuedÂspeech,Â

stopÂlisteningÂandÂhaveÂyourÂhearingÂchecked.ÂTheÂlouderÂ

theÂvolume,ÂtheÂlessÂtimeÂisÂrequiredÂbeforeÂyourÂhearingÂ

couldÂbeÂaected.ÂHearingÂexpertsÂsuggestÂthatÂtoÂprotectÂ

yourÂhearing:

ÂÂ LimitÂtheÂamountÂofÂtimeÂyouÂuseÂearbudsÂorÂheadphonesÂ

atÂhighÂvolume.

ÂÂ AvoidÂturningÂupÂtheÂvolumeÂtoÂblockÂoutÂnoisyÂ

surroundings.Â

ÂÂ TurnÂtheÂvolumeÂdownÂifÂyouÂcan’tÂhearÂpeopleÂspeakingÂ

nearÂyou.

High-risk activitiesÂÂThisÂcomputerÂisÂnotÂintendedÂforÂuseÂ

inÂtheÂoperationÂofÂnuclearÂfacilities,ÂaircraftÂnavigationÂorÂ

communicationsÂsystems,ÂairÂtracÂcontrolÂsystems,ÂorÂforÂanyÂ

otherÂusesÂwhereÂaÂfailureÂofÂtheÂcomputerÂsystemÂcouldÂleadÂ

toÂdeath,ÂpersonalÂinjury,ÂorÂsevereÂenvironmentalÂdamage.

Operating environmentÂÂOperatingÂyourÂiMacÂoutsideÂtheseÂ

rangesÂmayÂaectÂperformance:

Operating temperature:ÂÂ50°ÂtoÂ95°ÂFÂ(10°ÂtoÂ35°ÂC)

Storage temperature:ÂÂ-4°ÂtoÂ113°ÂFÂ(-20°ÂtoÂ45°ÂC)

Relative humidity:ÂÂ5%ÂtoÂ90%Â(noncondensing)

Operating altitude:ÂÂ0ÂtoÂ10,000ÂfeetÂ(0ÂtoÂ3048Âmeters)

DoÂnotÂoperateÂyourÂiMacÂinÂareasÂwithÂsignicantÂamountsÂ

ofÂairborneÂdust,ÂorÂsmokeÂfromÂcigarettes,Âcigars,Âashtrays,Â

stoves,ÂorÂreplaces,ÂorÂnearÂanÂultrasonicÂhumidierÂusingÂ

unlteredÂtapÂwater.ÂTinyÂairborneÂparticlesÂproducedÂbyÂ

smoking,Âcooking,Âburning,ÂorÂusingÂanÂultrasonicÂhumidierÂ

withÂunlteredÂwaterÂmay,ÂinÂrareÂinstances,ÂenterÂtheÂ

ventilationÂopeningsÂofÂyourÂiMacÂand,ÂunderÂcertainÂ

conditions,ÂresultÂinÂaÂslightÂhazeÂonÂtheÂinsideÂsurfaceÂofÂtheÂ

glassÂpanelÂthatÂcoversÂtheÂiMacÂdisplay.

Turning on your iMacÂÂNeverÂturnÂonÂyourÂiMacÂunlessÂallÂ

ofÂitsÂinternalÂandÂexternalÂpartsÂareÂinÂplace.ÂOperatingÂyourÂ

iMacÂwhenÂpartsÂareÂmissingÂmayÂbeÂdangerousÂandÂmayÂ

damageÂyourÂiMac.

ThisÂImportant Product Information Guide containsÂsafety,Â

handling,ÂdisposalÂandÂrecycling,Âregulatory,ÂandÂsoftwareÂ

licenseÂinformation,ÂasÂwellÂasÂtheÂone-yearÂlimitedÂwarrantyÂ

forÂyourÂiMac.ÂYourÂiMacÂmodelÂmightÂnotÂincludeÂallÂofÂtheÂ

featuresÂdescribedÂinÂthisÂdocument.

ÂÂReadÂallÂsafetyÂinformationÂandÂoperatingÂ

instructionsÂbelowÂbeforeÂusingÂiMacÂtoÂavoidÂ

injury.ÂForÂaÂdownloadableÂversionÂofÂtheÂiMacÂ

QuickÂStartÂguide andÂtheÂlatestÂversionÂofÂthisÂ

Important Product Information Guide,Âvisit:ÂÂ

support.apple.com/manuals/imac

Important Safety and Handling

Information

WARNING:  FailureÂtoÂfollowÂtheseÂsafetyÂinstructionsÂcouldÂ

resultÂinÂre,ÂelectricÂshock,ÂorÂotherÂinjuryÂorÂdamageÂtoÂ

iMacÂorÂotherÂproperty.

Proper handling ÂSetÂupÂyourÂiMacÂonÂaÂstableÂworkÂsurface.Â

NeverÂpushÂobjectsÂintoÂtheÂventilationÂopenings.Â

Water and wet locationsÂÂKeepÂyourÂiMacÂawayÂfromÂsourcesÂ

ofÂliquid,ÂsuchÂasÂdrinks,Âwashbasins,Âbathtubs,ÂshowerÂstalls,Â

andÂsoÂon.ÂProtectÂyourÂiMacÂfromÂdampnessÂorÂwetÂweather,Â

suchÂasÂrain,Âsnow,ÂandÂfog.

Power ÂUnplugÂtheÂpowerÂcordÂ(byÂpullingÂtheÂplug,ÂnotÂtheÂ

cord)ÂandÂdisconnectÂtheÂethernetÂcableÂorÂphoneÂcordÂifÂanyÂ

ofÂtheÂfollowingÂconditionsÂexist:

ÂÂ YouÂwantÂtoÂaddÂmemoryÂ(memoryÂisÂuser-replaceableÂinÂ

27-inchÂmodelsÂonly)

ÂÂ TheÂpowerÂcordÂorÂplugÂbecomesÂfrayedÂorÂotherwiseÂ

damaged

ÂÂ YouÂspillÂsomethingÂintoÂtheÂcase

ÂÂ YourÂiMacÂisÂexposedÂtoÂrainÂorÂexcessÂmoisture

ÂÂ YourÂiMacÂhasÂbeenÂdroppedÂorÂtheÂcaseÂhasÂbeenÂ

damaged

ÂÂ YouÂsuspectÂthatÂyourÂiMacÂneedsÂserviceÂorÂrepair

ÂÂ YouÂwantÂtoÂcleanÂtheÂcaseÂ(useÂonlyÂtheÂrecommendedÂ

procedureÂdescribedÂlaterÂinÂthisÂdocument)

Important:ÂÂTheÂonlyÂwayÂtoÂturnÂoÂpowerÂcompletelyÂisÂtoÂ

unplugÂtheÂpowerÂcord.ÂMakeÂsureÂatÂleastÂoneÂendÂofÂtheÂ

powerÂcordÂisÂwithinÂeasyÂreachÂsoÂthatÂyouÂcanÂunplugÂyourÂ

iMacÂwhenÂyouÂneedÂto.

Power specications (21.5-inch model):

ÂÂ Voltage: 100ÂtoÂ240ÂVÂACÂ

ÂÂ Current:ÂÂ3ÂA,ÂmaximumÂ

ÂÂ Frequency:ÂÂ50ÂtoÂ60ÂHz

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Apple 21.5" Troubleshooting Guide Page 2

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