Hardware Maintenance Manual

Chapter9.RemovingorreplacingaFRU

ThischapterprovidesinstructionsonhowtoremoveorreplaceaFRU.

CRUstatementforcustomers:

Youcanresolvesomeproblemswithyourproductwithareplacementpartyoucaninstallyourself,calleda“Customer

ReplaceableUnit”or“CRU.”SomeCRUsaredesignatedasself-serviceCRUsandothersaredesignatedas

optional-serviceCRUs.Installationofself-serviceCRUsisyourresponsibility.Foroptional-serviceCRUs,youcan

eitherinstalltheCRUyourselforyoucanrequestthataServiceProviderinstalltheCRUaccordingtothewarranty

serviceforyourproduct.IfyouintendoninstallingtheCRU,LenovowillshiptheCRUtoyou.CRUinformationand

replacementinstructionsareshippedwithyourproductandareavailablefromLenovoatanytimeuponrequest.

YoucanﬁndalistofCRUsforyourproductinthisHardwareMaintenanceManual.Anelectronicversionofthis

manualcanbefoundathttp://www.lenovo.com/support.ClickUserGuides&Manualsandthenfollowthe

on-screeninstructionstoﬁndthemanualforyourproduct.Y oumightberequiredtoreturnthedefectivepartthat

isreplacedbytheCRU.Whenreturnisrequired:(1)returninstructions,aprepaidshippinglabel,andacontainer

willbeincludedwiththereplacementCRU;and(2)youmightbechargedforthereplacementCRUifLenovodoes

notreceivethedefectiveCRUwithinthirty(30)daysofyourreceiptofthereplacementCRU.SeeyourLenovo

LimitedWarrantydocumentationforfulldetails.

Generalguidelines:

WhenremovingorreplacingaFRU,besuretoobservethefollowinggeneralguidelines:

1.Donottrytoserviceanycomputerunlessyouhavebeentrainedandcertiﬁed.Anuntrainedpersonruns

theriskofdamagingparts.

2.BeforereplacinganyFRU,reviewChapter8“FRUreplacementnotices”onpage55.

3.BeginbyremovinganyFRUsthathavetoberemovedbeforereplacingthefailingFRU.SuchFRUsare

listedatthebeginningofeachFRUreplacementprocedure.Removethemintheorderinwhichthey

arelisted.

4.FollowthecorrectsequenceinthestepsforremovingaFRU,asgiveninthedrawingsbythenumbers

insquarecallouts.

5.Whenturningascrew,turnitinthedirectionasgivenbythearrowinthedrawing.

6.WhenremovingaFRU,moveitinthedirectionasgivenbythearrowinthedrawing.

7.T oputthenewFRUinplace,reversetheremovalprocedureandfollowanynotesthatpertainto

replacement.

8.WhenreplacingaFRU,usethecorrectscrewsasshowninthereplacementprocedure.

DANGER

BeforeremovinganyFRU,disablethebuilt-inbattery.See“Disablingthebuilt-inbattery”onpage

60.

Attention:AfterreplacingaFRU,donotturnonthecomputeruntilyouhaveensuredthatallscrews,springs,

andothersmallpartsareinplaceandnonearelooseinsidethecomputer.Verifythisbyshakingthecomputer

gentlyandlisteningforrattlingsounds.Metallicpartsormetalﬂakescancauseelectricalshortcircuits.

Attention:Thesystemboardissensitiveto,andcanbedamagedby,electrostaticdischarge.Before

touchingit,establishpersonalgroundingbytouchingagroundpointwithonehandorbyusingan

electrostaticdischarge(ESD)strap.