Lenovo ThinkStation S20 - Chapter 5. Customer Replaceable Units (Crus)

Chapter5.CustomerReplaceableUnits(CRUs)
CustomerReplaceableUnits(CRUs)arecomputerpartsthatcanbeupgraded
orreplacedbythecustomer.TherearetwotypesofCRUs:Self-serviceand
Optional-service.Self-serviceCRUsareeasytoinstall.Theymightbestandalone,
latched,orrequireascrewdrivertoremoveamaximumoftwoscrews.However,
Optional-serviceCRUsrequiresometechnicalskillsandinsomecasesmight
alsorequiresimpletools,suchasascrewdriver.However,bothSelf-serviceand
Optional-serviceCRUsaresafeforthecustomertoremove.
CustomersareresponsibleforreplacingallSelf-serviceCRUs.Optional-service
CRUscanberemovedandinstalledbycustomersorbyaLenovoservice
technicianduringthewarrantyperiod.Lenovodesktopandworkstationcomputers
containbothSelf-serviceandOptional-serviceCRUs.
•Self-serviceCRUs:TheseCRUsunplugoraresecuredbynomorethantwo
screws.ExamplesofthesetypesofCRUsincludethekeyboard,themouse,
anyUSBdevice,andthepowercord.OtherSelf-serviceCRUsdepending
onproductdesignmightincludememorymodules,adaptercards,harddisk
drives,andopticaldrives.
•Optional-serviceCRUs:TheseCRUsareisolatedpartswithinthecomputer
andareconcealedbyanaccesspanelthatistypicallysecuredbymorethan
twoscrews.Oncetheaccesspanelisremoved,thespecicCRUisvisible.
•BothtypesofCRUsarelistedinthetablesonthefollowingpage.
TheThinkStationHardwareInstallationandReplacementGuideprovides
instructionsforreplacingSelf-serviceandOptional-serviceCRUs.Refertothe
followingtablefortheCRUinformationinyourThinkStationHardwareInstallation
andReplacementGuide.IfyourcomputermodelhasaWindows7operating
system,youcanviewthepublicationbyclickingStart➙HelpandSupport➙
LenovoUserGuide.Double-clickthepublicationforyourcomputer.Youcanalso
accessthepublicationontheLenovoSupportWebsiteat:
http://www.lenovo.com/ThinkStationUserGuides
Note:UseonlycomputerpartsprovidedbyLenovo.RefertoChapter3
“LenovoLimitedWarranty”onpage19
forwarrantyinformationaboutthe
CRUsforyourmachinetype.
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