•ToviewtheLEDsonthesystemboardandinternalcomponents,leavetheserverconnectedtopower.
•Whenyouarefinishedworkingontheserver,reinstallallsafetyshields,guards,labels,andgroundwires.
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.
–AttachtheESDgroundcliptoanyframeground,groundbraid,orgreen-wireground.
–Whenworkingonadouble-insulatedorbattery-operatedsystem,useanESDcommongroundor
referencepoint.Youcanusecoaxorconnector-outsideshellsonthesesystems.
–Usethegroundprongoftheacplugonac-operatedservers.
54ThinkServerRS140UserGuideandHardwareMaintenanceManual
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