User Manual
Inspectyourdesktopcomputerfordustaccumulationatleastonceeverythreemonths.Beforeinspecting
thecomputer,turnoffthepowerandunplugthecomputer'spowercordfromtheelectricaloutlet;then
removeanydustfromventsandperforationsinthebezel.Ifyounoticeexternaldustaccumulation,then
examineandremovedustfromtheinsideofthecomputerincludingheatsinkinletfins,powersupplyvents,
andfans.Alwaysturnoffandunplugthecomputerbeforeopeningthecover.Ifpossible,avoidoperatingthe
computerwithintwofeetofhigh-trafficareas.Ifyoumustoperatethecomputerinornearahigh-traffic
area,inspectand,ifnecessary,cleanthecomputermorefrequently.
Foryoursafetyandtomaintainoptimumcomputerperformance,alwaysfollowthesebasicprecautions
withyourdesktopcomputer:
•Keepthecoverclosedwheneverthecomputerispluggedin.
•Regularlyinspecttheoutsideofthecomputerfordustaccumulation.
•Removedustfromventsandanyperforationsinthebezel.Morefrequentcleaningsmightberequiredfor
computersindustyorhigh-trafficareas.
•Donotrestrictorblockanyventilationopenings.
•Donotstoreoroperatethecomputerinsidefurniture,asthismightincreasetheriskofoverheating.
•Airflowtemperaturesintothecomputershouldnotexceed35°C(95°F).
•Donotinstallairfiltrationdevices.Theymayinterferewithpropercooling.
Operatingenvironment
Theoptimalenvironmentinwhichtousethecomputeris10°C–35°C(50°F–95°F)withhumidityranging
between35%and80%.Ifthecomputerisstoredortransportedintemperatureslessthan10°C(50°F),allow
thecoldcomputertoriseslowlytoanoptimaloperatingtemperatureof10°C–35°C(50°F–95°F)beforeuse.
Thisprocesscouldtaketwohoursinextremeconditions.Failuretoallowthecomputertorisetoanoptimal
operatingtemperaturebeforeusecouldresultinirreparabledamagetothecomputer.
Ifpossible,placethecomputerinawell-ventilatedanddryareawithoutdirectexposuretosunshine.
Keepelectricalappliancessuchasanelectricfan,radio,high-poweredspeakers,airconditioner,and
microwaveovenawayfromthecomputerbecausethestrongmagneticfieldsgeneratedbytheseappliances
candamagethemonitoranddataonthestoragedrive.
Donotplaceanybeveragesontopoforbesidethecomputerorotherconnecteddevices.Ifliquidisspilled
onorinthecomputeroraconnecteddevice,ashortcircuitorotherdamagemightoccur.
Donoteatorsmokeoveryourkeyboard.Particlesthatfallintoyourkeyboardcancausedamage.
Lasercompliancestatement
CAUTION:
Whenlaserproducts(suchasCD-ROMs,DVDdrives,fiberopticdevices,ortransmitters)are
installed,notethefollowing:
•Donotremovethecovers.Removingthecoversofthelaserproductcouldresultinexposureto
hazardouslaserradiation.Therearenoserviceablepartsinsidethedevice.
•Useofcontrolsoradjustmentsorperformanceofproceduresotherthanthosespecifiedherein
mightresultinhazardousradiationexposure.
viThinkCentreM800andM900UserGuide