Lenovo TS140 Spezifikationen Seite 52

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Youdonothavetoturnofftheservertoinstallorreplaceahot-swapredundantpowersupply,a
hot-swapharddiskdrive,orahot-plugUSBdevice.However,youmustturnofftheserverbefore
performinganystepthatinvolvesinstalling,removing,orreplacingadaptercablesornon-hot-swap
devicesorcomponents.
ToviewtheLEDsonthesystemboardandinternalcomponents,leavetheserverconnectedtopower.
Whenyouarefinishedworkingontheserver,reinstallallsafetyshields,guards,labels,andgroundwires.
Whenworkinginsidetheserver,youmightfindsometaskseasierifyoulaytheserveronitsside.
Handlingstatic-sensitivedevices
Attention:Donotopenthestatic-protectivepackagethatcontainsthenewpartuntilthedefectiveparthasbeen
removedfromtheserverandyouarereadytoinstallthenewpart.Staticelectricity,althoughharmlesstoyou,
canseriouslydamageservercomponentsandparts.
Anyserverpartcontainingtransistorsorintegratedcircuits(ICs)shouldbeconsideredsensitiveto
electrostaticdischarge(ESD).ESDdamagecanoccurwhenthereisadifferenceinchargebetweenobjects.
ProtectagainstESDdamagebyequalizingthechargesothatthemachine,thepart,theworkmat,andthe
personhandlingthepartareallatthesamecharge.
Notes:
Useproduct-specificESDprocedureswhentheyexceedtherequirementsnotedhere.
EnsurethattheESDprotectivedevicesyouusehavebeencertified(ISO9000)asfullyeffective.
Whenyouhandleserverpartsandcomponents,taketheseprecautionstoavoidstatic-electricitydamage:
Limityourmovement.Movementcancausestaticelectricitytobuilduparoundyou.
Alwayscarefullyhandlethepartsandothercomponents(suchasPCIExpresscards,memorymodules,
systemboards,andmicroprocessors)byedgesorframe.Donottouchsolderjoints,pins,orexposed
circuitry.
Donotleavethedevicewhereotherscanhandleandpossiblydamagethedevice.
Beforeyoureplaceanewpart,touchthestatic-protectivepackagecontainingthenewparttoan
unpaintedmetalpartoftheserverforatleasttwoseconds.Thisreducesstaticelectricityfromthe
packageandyourbody.
Removethenewpartfromthestatic-protectivepackageanddirectlyinstallitintheserverwithout
placingitonanyothersurface.Ifitishardforyoutodothisinyourspecificsituation,placethe
static-protectivepackageofthenewpartonasmooth,levelsurface,andthenplacethenewparton
thestatic-protectivepackage.
Donotplacethepartontheservercoverorothermetalsurface.
Takeadditionalcarewhenhandlingdevicesduringcoldweather.Heatingreducesindoorhumidity
andincreasesstaticelectricity.
Useagroundedworkmattoprovideastatic-freeworksurface.Thematisespeciallyusefulwhen
handlingESD-sensitivedevices.
Preventthepartfromtouchingyourclothing.Mostclothingisinsulativeandretainsachargeeven
whenyouarewearingawriststrap.
Theuseofagroundingsystemisrecommended.Forexample,itisrecommendedtowearanelectrostatic
discharge(ESD)wriststrap,ifoneisavailable.EnsurethatyouworkinanESD-safearea.Selecta
groundingsystem,suchasthoselistedbelow,toprovideprotectionthatmeetsthespecificservice
requirement.
Note:TheuseofagroundingsystemtoguardagainstESDdamageisdesirablebutnotnecessary.
38ThinkServerTS140HardwareMaintenanceManual
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