Chapter7.FRUreplacementnotices
ExternalCRUstatementtocustomers:
Someproblemswithyourproductcanberesolvedwithareplacementpartyoucaninstallyourself,called
a“CustomerReplaceableUnit”or“CRU.”SomeCRUsaredesignatedasSelf-serviceCRUsandothers
aredesignatedasOptional-serviceCRUs.InstallationofSelf-serviceCRUsisyourresponsibility;youmay
requestthatLenovoinstallsanOptional-serviceCRUaccordingtothewarrantyserviceforyourproduct.
WhereyouareinstallingtheCRU,LenovowillshiptheCRUtoyou.CRUinformationandreplacement
instructionsareshippedwithyourproductandareavailablefromLenovoatanytimeuponrequest.Youmay
ndalistofCRUsinthepublicationsthatshipwithyourproductorathttp://www.lenovo.com/CRUs.You
mayberequiredtoreturnthedefectivepartthatisreplacedbytheCRU.Whenreturnisrequired:(1)return
instructions,aprepaidshippinglabel,andacontainerwillbeincludedwiththereplacementCRU;and(2)you
maybechargedforthereplacementCRUifLenovodoesnotreceivethedefectivepartwithinthirty(30)days
ofyourreceiptofthereplacementCRU.SeeyourLenovoLimitedWarrantydocumentationforfulldetails.
Thischapterpresentsnoticesrelatedtoremovingandreplacingparts.Readthischaptercarefullybefore
replacinganyFRU.

Screwnotices

Loosescrewscancauseareliabilityproblem.IntheThinkPadNotebook,thisproblemisaddressedwith
specialnylon-coatedscrewsthathavethefollowingcharacteristics:
•Theymaintaintightconnections.
•Theydonoteasilycomeloose,evenwithshockorvibration.
•Theyarehardertotighten.
•Eachoneshouldbeusedonlyonce.
Dothefollowingwhenyouservicethismachine:
•Keepthescrewkit(fortheP/N,see“Miscellaneousparts”onpage127)inyourtoolbag.
•Alwaysusenewscrews.
•Useatorquescrewdriverifyouhaveone.
Tightenscrewsasfollows:
•Plastictoplastic
Turnanadditional90degreesafterthescrewheadtouchesthesurfaceoftheplasticpart:
•Logiccardtoplastic
Turnanadditional180degreesafterthescrewheadtouchesthesurfaceofthelogiccard:
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