ThinkPad E550 - Chapter 9. FRU Removal and Replacement; General FRU Removal and Replacement Guidelines

Chapter9.RemovingorreplacingaFRU
ThischapterprovidesinstructionsonhowtoremoveorreplaceaFRU.
CRUstatementforcustomers:
Youcanresolvesomeproblemswithyourproductwithareplacementpartyoucaninstallyourself,called
a“CustomerReplaceableUnit”or“CRU.”SomeCRUsaredesignatedasself-serviceCRUsandothers
aredesignatedasoptional-serviceCRUs.Installationofself-serviceCRUsisyourresponsibility.For
optional-serviceCRUs,youcaneitherinstalltheCRUyourselforyoucanrequestthataServiceProvider
installtheCRUaccordingtothewarrantyserviceforyourproduct.IfyouintendoninstallingtheCRU,
LenovowillshiptheCRUtoyou.CRUinformationandreplacementinstructionsareshippedwithyour
productandareavailablefromLenovoatanytimeuponrequest.YoucanfindalistofCRUsforyour
productinthisHardwareMaintenanceManual.Anelectronicversionofthismanualcanbefoundat
http://www.lenovo.com/support.ClickUserGuides&Manualsandthenfollowtheon-screeninstructions
tofindthemanualforyourproduct.YoumightberequiredtoreturnthedefectiveCRU.Whenreturn
isrequired:(1)returninstructions,aprepaidshippinglabel,andacontainerwillbeincludedwiththe
replacementCRU;and(2)youmightbechargedforthereplacementCRUifLenovodoesnotreceivethe
defectiveCRUwithinthirty(30)daysofyourreceiptofthereplacementCRU.SeeyourLenovoLimited
Warrantydocumentationforfulldetails.
Generalguidelines
WhenremovingorreplacingaFRU,besuretoobservethefollowinggeneralguidelines:
1.Donottrytoserviceanycomputerunlessyouhavebeentrainedandcertified.Anuntrainedpersonruns
theriskofdamagingparts.
2.BeforereplacinganyFRU,reviewChapter8“FRUreplacementnotices”onpage61.
3.BeginbyremovinganyFRUsthathavetoberemovedbeforereplacingthefailingFRU.Anysuch
FRUsarelistedatthebeginningofeachFRUreplacementprocedure.Removethemintheorderin
whichtheyarelisted.
4.FollowthecorrectsequenceinthestepsforremovingaFRU,asgiveninthedrawingsbythenumbers
insquarecallouts.
5.Whenturningascrew,turnitinthedirectionasgivenbythearrowinthedrawing.
6.WhenremovingaFRU,moveitinthedirectionasgivenbythearrowinthedrawing.
7.ToputthenewFRUinplace,reversetheremovalprocedureandfollowanynotesthatpertainto
replacement.Forinformationaboutconnectingandarranginginternalcables,seeChapter7“Locations”
onpage53.
8.WhenreplacingaFRU,usethecorrectscrewsasshowninthereplacementprocedure.
DANGER
BeforeremovinganyFRU,turnoffthecomputer,unplugallpowercordsfromelectricaloutlets,
removethebatterypack,andthendisconnectanyinterconnectingcables.
Attention:
•AfterreplacingaFRU,donotturnonthecomputeruntilyouhavemadesurethatallscrews,springs,and
othersmallpartsareinplaceandnonearelooseinsidethecomputer.Verifythisbyshakingthecomputer
gentlyandlisteningforrattlingsounds.Metallicpartsormetalflakescancauseelectricalshortcircuits.
•Thesystemboardissensitiveto,andcanbedamagedby,ESD.Beforetouchingit,establishpersonal
groundingbytouchingagroundpointwithonehandorbyusinganESDstrap.
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