User Guide
ReplaceableUnits,orCRUs.Lenovoprovidesdocumentationwithinstructionswhenitisappropriatefor
customerstoinstalloptionsorreplaceCRUs.Youmustcloselyfollowallinstructionswheninstallingor
replacingparts.TheOffstateofapowerindicatordoesnotnecessarilymeanthatvoltagelevelsinsidea
productarezero.Beforeyouremovethecoversfromaproductequippedwithapowercord,alwaysmake
surethatthepoweristurnedoffandthattheproductisunpluggedfromanypowersource.Formore
informationonCRUs,refertoChapter6“Replacingdevices”onpage115forthisproduct.Ifyouhaveany
questionsorconcerns,contacttheCustomerSupportCenter.
Althoughtherearenomovingpartsinyourcomputerafterthepowercordhasbeendisconnected,the
followingwarningsarerequiredforyoursafety.
DANGER
Hazardousmovingparts.Keepngersandotherbodypartsaway.
CAUTION:
BeforereplacinganyCRUs,turnoffthecomputerandwaitthreetoveminutestoletthecomputer
coolbeforeopeningthecover.
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