Lenovo E455 Technical Information PDF herunterladen (Seite 69)

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.Y oucanﬁndalistofCRUsforyourproduct

inthisHardwareMaintenanceManual.Anelectronicversionofthismanualisavailablefordownloadingat

http://www.lenovo.com/support.YoumightberequiredtoreturnthedefectiveCRU.Whenreturnisrequired:

(1)returninstructions,aprepaidshippinglabel,andacontainerwillbeincludedwiththereplacement

CRU;and(2)youmightbechargedforthereplacementCRUifLenovodoesnotreceivethedefective

partwithinthirty(30)daysofyourreceiptofthereplacementCRU.SeeyourLenovoLimitedWarranty

documentationforfulldetails.

Generalguidelines

WhenremovingorreplacingaFRU,besuretoobservethefollowinggeneralguidelines:

1.Donottrytoserviceanycomputerunlessyouhavebeentrainedandcertiﬁed.Anuntrainedpersonruns

theriskofdamagingparts.

2.BeforereplacinganyFRU,reviewChapter8“FRUreplacementnotices”onpage59.

3.BeginbyremovinganyFRUsthathavetoberemovedbeforereplacingthefailingFRU.AnysuchFRUs

arelistedatthebeginningofeachFRUreplacementsection.Removethemintheorderinwhichthey

arelisted.

4.FollowthecorrectsequenceinthestepsforremovingaFRU,asgivenintheillustrationsbythe

numbersinsquarecallouts.

5.Whenturningascrew,turnitinthedirectionasgivenbythearrowintheillustration.

6.WhenremovingaFRU,moveitinthedirectionasgivenbythearrowintheillustration.

7.ToputthenewFRUinplace,reversetheremovalprocedureandfollowanynotesthatpertainto

replacement.

8.WhenreplacingaFRU,usethecorrectscrewsasshowninthereplacementprocedures.

DANGER

BeforeremovinganyFRU,turnoffthecomputer,unplugallpowercordsfromelectricaloutlets,

disablethebuilt-inbattery,andthendisconnectanyinterconnectingcables.

Attention:AfterreplacingaFRU,donotturnonthecomputeruntilyouhavemadesurethatallscrews,

springs,andothersmallpartsareinplaceandnonearelooseinsidethecomputer.Verifythisbyshaking

thecomputergentlyandlisteningforrattlingsounds.Metallicpartsormetalﬂakescancauseelectrical

shortcircuits.

Attention:Thesystemboardissensitiveto,andcanbedamagedby,electrostaticdischarge(ESD).

Beforetouchingit,establishpersonalgroundingbytouchingagroundpointwithonehandorbyusingan

electrostaticdischargestrap.

1 2 ... 64 65 66 67 68 69 70 71 72 73 74 ... 103 104

Keine Kommentare

Lenovo E455 Technical Information Seite 69