•Tocompletethereplacement,goto“Completingthepartsreplacement”onpage152.
Installingorreplacingahot-swapredundantpowersupply
Dependingonthemodel,yourservermightcomewithoneortwohot-swapredundantpowersupplies.
Whentheserverispopulatedwithtwohot-swapredundantpowersupplies,theservercanwithstanda
powerlossfromeitherpowersupply.Thishelpsyouavoidsignificantinterruptiontotheoperationofthe
serverwhenapowersupplyfails.Youcanreplacethefailinghot-swapredundantpowersupplywithout
turningofftheserver.
Someservermodelscomewithonlyonepowersupply.Youcanpurchaseahot-swapredundantpower
supplyfromtheLenovoWebsiteat:
http://lenovoquickpick.com/usa/home/thinkserver/rack-and-tower-server
CAUTION:
Hazardousmovingparts.Keepfingersandotherbodypartsaway.
CAUTION:
Neverremovethecoveronapowersupplyoranypartthathasthefollowinglabelattached.
Hazardousvoltage,current,andenergylevelsarepresentinsideanycomponentthathasthislabel
attached.Therearenoserviceablepartsinsidethesecomponents.Ifyoususpectaproblemwith
oneoftheseparts,contactaservicetechnician.
Notes:
•TomaintaintheEMIintegrityandcoolingoftheserver,installanewpowersupplyassoonasyouremove
thefailingone.Covertheotherbaywithashieldifyoujustuseonepowersupplytoprovidepower.
•Useanydocumentationthatcomeswiththenewpowersupplyandfollowthoseinstructionsinaddition
totheinstructionsinthistopic.
Installingahot-swapredundantpowersupply
Attention:Donotopenyourserverorattemptanyrepairbeforereadingandunderstanding“Safetyinformation”
onpageiiiand“Guidelines”onpage59.
Beforeyoubegin,printalltherelatedinstructionsorensurethatyoucanviewthePDFversiononanother
computerforreference.
Toinstallahot-swapredundantpowersupply,dothefollowing:
120ThinkServerRD550UserGuideandHardwareMaintenanceManual
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