Lenovo TS440 Specifications Page 78

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Backupallimportantdatabeforeyoumakechangestodrives.
Haveasmallflat-bladescrewdriveravailable.
Youdonothavetoturnofftheservertoinstallorreplaceahot-swapredundantpowersupply,hot-swap
harddiskdrives,orhot-plugUSBdevices.However,youmustturnofftheserverbeforeperforming
anystepsthatinvolveinstalling,removing,orreplacingadaptercablesornon-hot-swapdevicesor
components.
ToviewtheLEDsonthesystemboardandinternalcomponents,leavetheserverconnectedtopower.
Whenyouarefinishedworkingontheserver,reinstallallsafetyshields,guards,labels,andgroundwires.
Whenworkinginsidetheserver,youmightfindsometaskseasierifyoulaytheserveronitsside.
Handlingstatic-sensitivedevices
Attention:Donotopenthestatic-protectivepackagethatcontainsthenewpartuntilthedefectiveparthasbeen
removedfromtheserverandyouarereadytoinstallthenewpart.Staticelectricity,althoughharmlesstoyou,
canseriouslydamageservercomponentsandparts.
Whenyouhandleserverpartsandcomponents,taketheseprecautionstoavoidstatic-electricitydamage:
Limityourmovement.Movementcancausestaticelectricitytobuilduparoundyou.
Theuseofagroundingsystemisrecommended.Forexample,wearanelectrostaticdischarge(ESD)
wriststrap,ifoneisavailable.EnsurethatyouworkinanESD-safearea.
Alwayscarefullyhandlethepartsandothercomponents(suchasPCIcards,memorymodules,system
boards,andmicroprocessors)byitsedgesoritsframe.Donottouchsolderjoints,pins,orexposed
circuitry.
Donotleavethedevicewhereotherscanhandleanddamageit.
Beforeyoureplaceanewpart,touchthestatic-protectivepackagecontainingthenewparttoan
unpaintedmetalpartoftheserverforatleasttwoseconds.Thisreducesstaticelectricityfromthe
packageandyourbody.
Removethenewpartfromthestatic-protectivepackageanddirectlyinstallitintheserverwithout
placingitonanyothersurface.Ifitishardforyoutodothisinyourspecificsituation,placethe
static-protectivepackageofthenewpartonasmooth,levelsurface,andthenplacethenewparton
thestatic-protectivepackage.
Donotplacethepartontheservercoverorothermetalsurface.
Takeadditionalcarewhenhandlingdevicesduringcoldweather.Heatingreducesindoorhumidity
andincreasesstaticelectricity.
Systemreliabilityguidelines
Tohelpensurepropercoolingandsystemreliability,ensurethatyoufollowtheseguidelines:
Eachofthedrivebayshasadriveoradummytrayinstalled;orthereisanelectromagneticinterface(EMI)
protectivepanelorEMIshieldinstalledtoprotectthedrivecage.
Iftheserverhasredundantpower,eachofthepowersupplybayhasaredundantpowersupplyinstalled,
oronebayhasaredundantpowersupplywhiletheotherbayiscoveredbyashield.
Leaveadequatespacearoundtheservertoensurethattheservercoolingsystemworkswell.Leave
approximately50mm(2inches)ofopenspacearoundthefrontandrearoftheserver.Donotplace
objectsinfrontofthefans.Forpropercoolingandairflow,installtheservercoverbeforeyouturnon
theserver.Operatingtheserverforextendedperiodsoftime(morethan30minutes)withtheserver
coverremovedmightdamageservercomponents.
Properlyroutethecables.Forsomeoptions,suchasPCIcards,followthecablinginstructionsthatcome
withtheoptionsinadditiontotheinstructionsinthismanual.
66ThinkServerTS440HardwareMaintenanceManual
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