User Guide

Chapter8.RemovingandreplacingaFRU

ThischapterpresentsdirectionsanddrawingsforuseinremovingandreplacingaFRU.Besuretoobserve

thefollowinggeneralrules:

1.Donottrytoserviceanycomputerunlessyouhavebeentrainedandcertied.Anuntrainedpersonruns

theriskofdamagingparts.

2.BeforereplacinganyFRU,reviewChapter7“FRUreplacementnotices”onpage59.

3.BeginbyremovinganyFRUsthathavetoberemovedbeforethefailingFRU.AnysuchFRUsarelisted

atthetopofthepage.Removethemintheorderinwhichtheyarelisted.

4.FollowthecorrectsequenceinthestepsforremovingtheFRU,asgiveninthedrawingsbythe

numbersinsquarecallouts.

5.WhenturningascrewtoreplaceaFRU,turnitinthedirectionasgivenbythearrowinthedrawing.

6.WhenremovingtheFRU,moveitinthedirectionasgivenbythearrowinthedrawing.

7.ToputthenewFRUinplace,reversetheremovalprocedureandfollowanynotesthatpertainto

replacement.Forinformationaboutconnectingandarranginginternalcables,seeChapter9“Locations”

onpage111

8.WhenreplacingaFRU,usethecorrectscrewasshownintheprocedures.

DANGER

BeforeremovinganyFRU,turnoffthecomputer,unplugallpowercordsfromelectricaloutlets,

removethebatterypack,andthendisconnectanyinterconnectingcables.

Attention:AfterreplacingaFRU,donotturnonthecomputeruntilyouhavemadesurethatallscrews,

springs,andothersmallpartsareinplaceandnonearelooseinsidethecomputer.Verifythisbyshaking

thecomputergentlyandlisteningforrattlingsounds.Metallicpartsormetalakescancauseelectrical

shortcircuits.

Attention:Thesystemboardissensitiveto,andcanbedamagedby,electrostaticdischarge.Before

touchingit,establishpersonalgroundingbytouchingagroundpointwithonehandorbyusingan

electrostaticdischarge(ESD)strap(P/N6405959).