User's Manual

Chapter9.RemovingandreplacingaFRU

ThischapterpresentsdirectionsanddrawingsforuseinremovingandreplacingaFRU.Besuretoobserve

thefollowinggeneralrules:

1.Donottrytoserviceanycomputerunlessyouhavebeentrainedandcertied.Anuntrainedpersonruns

theriskofdamagingparts.

2.BeforereplacinganyFRU,reviewFRUreplacementnotices.

3.BeginbyremovinganyFRUsthathavetoberemovedbeforethefailingFRU.AnysuchFRUsarelisted

atthetopofthepage.Removethemintheorderinwhichtheyarelisted.

4.FollowthecorrectsequenceinthestepsforremovingtheFRU,asgiveninthedrawingsbythe

numbersinsquarecallouts.

5.WhenturningascrewtoreplaceaFRU,turnitinthedirectionasgivenbythearrowinthedrawing.

6.WhenremovingtheFRU,moveitinthedirectionasgivenbythearrowinthedrawing.

7.T oputthenewFRUinplace,reversetheremovalprocedureandfollowanynotesthatpertainto

replacement.Forinformationaboutconnectingandarranginginternalcables,seeLocations.

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).