Lenovo ThinkServer RD440 - Removing the server cover

–AttachtheESDgroundcliptoanyframeground,groundbraid,orgreen-wireground.
–Whenworkingonadouble-insulatedorbattery-operatedsystem,useanESDcommongroundor
referencepoint.Youcanusecoaxorconnector-outsideshellsonthesesystems.
–Usethegroundprongoftheacplugonac-operatedservers.
Systemreliabilityguidelines
Tohelpensurepropercoolingandsystemreliability,strictlyfollowtheseguidelines:
•Eachofthedrivebayshasadriveoradummytrayinstalled;orthereisanelectromagneticinterface(EMI)
protectivepanelorEMIshieldinstalledtoprotectthedrivecage.
•Iftheserversupportshot-swapredundantpowersupplies,eachofthepowersupplybayhasaredundant
powersupplyinstalled,oronebayhasaredundantpowersupplyinstalledwhiletheotherbayiscovered
byashield.
•Leaveadequatespacearoundtheservertoensurethattheservercoolingsystemworkswell.Leave
approximately50mm(2inches)ofopenspacearoundthefrontandrearoftheserver.Donotplace
objectsinfrontofthefans.Forpropercoolingandairflow,installtheservercoverbeforeyouturnon
theserver.Operatingtheserverforextendedperiodsoftime(morethan30minutes)withtheserver
coverremovedmightdamageservercomponents.
•Properlyroutethecables.Forsomeoptions,suchasPCIcards,followthecablinginstructionsthatcome
withtheoptionsinadditiontotheinstructionsinthismanual.
•Whenreplacingahot-swapdrive,installthenewhot-swapdrivewithintwominutesofremoval.
•Ifyourserverhasairductsorairbaffles,donotremovethemwhiletheserverisrunning.Operatingthe
serverwithouttheairductsorairbafflesmightcausethemicroprocessorstooverheat.
•Forserversthatsupportuptotwomicroprocessors,ensurethatthesecondmicroprocessorsocket
alwayscontainsamicroprocessororisprotectedbyamicroprocessorsocketcover.
Workinginsidetheserverwiththepoweron
Attention:Staticelectricitythatisreleasedtointernalservercomponentswhentheserveristurnedonmightcause
theservertohalt,whichmightresultinthelossofdata.Toavoidthispotentialproblem,alwaysuseanESDwriststrap
orothergroundingsystemwhenyouworkinsidetheserverwiththepoweron.
Theserversupportshot-swapdevicesandisdesignedtooperatesafelywhileitisturnedonandthecoveris
removed.Followtheseguidelineswhenyouworkinsidetheserverwiththepoweron:
•Avoidwearingloose-fittingclothingonyourforearms.Buttonlong-sleevedshirtsbeforeworkinginside
theserver;donotwearcufflinkswhileyouareworkinginsidetheserver.
•Donotallowyournecktieorscarftohanginsidetheserver.
•Removejewelry,suchasbracelets,necklaces,rings,andloose-fittingwristwatches.
•Removeitemsfromyourshirtpocket,suchaspensandpencils.Theseitemsmightfallintotheserveras
youleanoverit.
•Avoiddroppinganymetallicobjectsintotheserver,suchaspaperclips,hairpins,andscrews.
Removingtheservercover
Attention:Donotopenyourserverorattemptanyrepairbeforereadingandunderstanding“Safetyinformation”
onpageiii
and“Guidelines”onpage87.
Thistopicprovidesinstructionsonhowtoremovetheservercover.
Chapter6.Installing,removing,orreplacinghardware89