Lenovo ThinkCentre M92p - Heat and Product Ventilation

Plugsandoutlets
Ifareceptacle(poweroutlet)thatyouintendtousewithyourcomputerequipmentappearstobedamaged
orcorroded,donotusetheoutletuntilitisreplacedbyaqualiedelectrician.
Donotbendormodifytheplug.Iftheplugisdamaged,contactthemanufacturertoobtainareplacement.
Donotshareanelectricaloutletwithotherhomeorcommercialappliancesthatdrawlargeamountsof
electricity;otherwise,unstablevoltagemightdamageyourcomputer,data,orattacheddevices.
Someproductsareequippedwithathree-prongedplug.Thisplugtsonlyintoagroundedelectricaloutlet.
Thisisasafetyfeature.Donotdefeatthissafetyfeaturebytryingtoinsertitintoanon-groundedoutlet.If
youcannotinserttheplugintotheoutlet,contactanelectricianforanapprovedoutletadapterortoreplace
theoutletwithonethatenablesthissafetyfeature.Neveroverloadanelectricaloutlet.Theoverallsystem
loadshouldnotexceed80percentofthebranchcircuitrating.Consultanelectricianformoreinformation
ifyouhavequestionsaboutpowerloadsandbranchcircuitratings.
Ensurethatthepoweroutletyouareusingisproperlywired,easilyaccessible,andlocatedclosetothe
equipment.Donotfullyextendpowercordsinawaythatwillstressthecords.
Ensurethatthepoweroutletprovidesthecorrectvoltageandcurrentfortheproductyouareinstalling.
Carefullyconnectanddisconnecttheequipmentfromtheelectricaloutlet.
Externaldevices
DonotconnectordisconnectanyexternaldevicecablesotherthanUniversalSerialBus(USB)and1394
cableswhilethecomputerpowerison;otherwise,youmightdamageyourcomputer.Toavoidpossible
damagetoattacheddevices,waitatleastvesecondsafterthecomputerisshutdowntodisconnect
externaldevices.
Heatandproductventilation
Computers,poweradapters,andmanyaccessoriescangenerateheatwhenturnedonandwhenbatteries
arecharging.Alwaysfollowthesebasicprecautions:
•Donotleaveyourcomputer,poweradapter,oraccessoriesincontactwithyourlaporanypartofyour
bodyforanextendedperiodwhentheproductsarefunctioningorwhenthebatteryischarging.Your
computer,poweradapter,andmanyaccessoriesproducesomeheatduringnormaloperation.Extended
contactwiththebodycouldcausediscomfortor,potentially,askinburn.
•Donotchargethebatteryoroperateyourcomputer,poweradapter,oraccessoriesnearammable
materialsorinexplosiveenvironments.
•Ventilationslots,fans,andheatsinksareprovidedwiththeproductforsafety,comfort,andreliable
operation.Thesefeaturesmightinadvertentlybecomeblockedbyplacingtheproductonabed,sofa,
carpet,orotherexiblesurface.Neverblock,cover,ordisablethesefeatures.
Inspectyourdesktopcomputerfordustaccumulationatleastonceeverythreemonths.Beforeinspecting
yourcomputer,turnoffthepowerandunplugthecomputer'spowercordfromtheelectricaloutlet;then
removeanydustfromventsandperforationsinthebezel.Ifyounoticeexternaldustaccumulation,then
examineandremovedustfromtheinsideofthecomputerincludingheatsinkinletns,powersupplyvents,
andfans.Alwaysturnoffandunplugthecomputerbeforeopeningthecover.Ifpossible,avoidoperating
yourcomputerwithintwofeetofhigh-trafcareas.Ifyoumustoperateyourcomputerinornearahigh-trafc
area,inspectand,ifnecessary,cleanyourcomputermorefrequently.
©CopyrightLenovo2012
vii