Lenovo ThinkCentre M90p - Heat and Product Ventilation

damaged,orifyounoticeanydischargefromyourbatteryorthebuildupofforeign
materialsonthebatteryleads,stopusingthebatteryandobtainareplacement
fromthebatterymanufacturer.
Batteriescandegradewhentheyareleftunusedforlongperiodsoftime.For
somerechargeablebatteries(particularlyLithiumIonbatteries),leavingabattery
unusedinadischargedstatecouldincreasetheriskofabatteryshortcircuit,
whichcouldshortenthelifeofthebatteryandcanalsoposeasafetyhazard.Do
notletrechargeableLithium-Ionbatteriescompletelydischargeorstorethese
batteriesinadischargedstate.
Heatandproductventilation
Computers,poweradapters,andmanyaccessoriescangenerateheatwhen
turnedonandwhenbatteriesarecharging.Alwaysfollowthesebasicprecautions:
•Donotleaveyourcomputer,poweradapter,oraccessoriesincontactwith
yourlaporanypartofyourbodyforanextendedperiodwhentheproducts
arefunctioningorwhenthebatteryischarging.Yourcomputer,poweradapter,
andmanyaccessoriesproducesomeheatduringnormaloperation.Extended
contactwiththebodycouldcausediscomfortor,potentially,askinburn.
•Donotchargethebatteryoroperateyourcomputer,poweradapter,or
accessoriesnearammablematerialsorinexplosiveenvironments.
•Ventilationslots,fans,andheatsinksareprovidedwiththeproductforsafety,
comfort,andreliableoperation.Thesefeaturesmightinadvertentlybecome
blockedbyplacingtheproductonabed,sofa,carpet,orotherexiblesurface.
Neverblock,cover,ordisablethesefeatures.
Inspectyourdesktopcomputerfordustaccumulationatleastonceeverythree
months.Beforeinspectingyourcomputer,turnoffthepowerandunplugthe
computer'spowercordfromtheelectricaloutlet;thenremoveanydustfrom
ventsandperforationsinthebezel.Ifyounoticeexternaldustaccumulation,then
examineandremovedustfromtheinsideofthecomputerincludingheatsinkinlet
ns,powersupplyvents,andfans.Alwaysturnoffandunplugthecomputer
beforeopeningthecover.Ifpossible,avoidoperatingyourcomputerwithin
twofeetofhigh-trafcareas.Ifyoumustoperateyourcomputerinorneara
high-trafcarea,inspectand,ifnecessary,cleanyourcomputermorefrequently.
Foryoursafetyandtomaintainoptimumcomputerperformance,alwaysfollow
thesebasicprecautionswithyourdesktopcomputer:
•Keepthecoverclosedwheneverthecomputerispluggedin.
•Regularlyinspecttheoutsideofthecomputerfordustaccumulation.
•Removedustfromventsandanyperforationsinthebezel.Morefrequent
cleaningsmightberequiredforcomputersindustyorhigh-trafcareas.
•Donotrestrictorblockanyventilationopenings.
•Donotstoreoroperateyourcomputerinsidefurniture,asthismightincrease
theriskofoverheating.
Chapter1.Importantsafetyinformation7