Chapter 9. Removing or replacing a FRU
This chapter provides instructions on how to remove or replace a FRU.
CRU statement for customers:
You can resolve some problems with your product with a replacement part you can install yourself, called
a “Customer
Replaceable
Unit” or “CRU.” Some CRUs are designated as self-service CRUs and others
are designated as optional-service CRUs. Installation of self-service CRUs is your responsibility. For
optional-service CRUs, you can either install the CRU yourself or you can request that a Service Provider
install the CRU according to the warranty service for your prod uct. If you intend on installing the CRU,
Lenovo will ship the CRU to you. CRU information and replacement instructions are shipped with your
product and are available from Lenovo at any time upon request. You can find a list of CRUs for your product
in this Hardware Maintenance Manual. You might be required to return the defective CRU. When return is
required:(1) return instructions, a prepaid shipping label, and a container will be included with the
replacement CRU; and (2) you might be charged for the replacement CRU if Lenovo does not receive the
defective part within thirty (30) days of your receipt of the replacement CRU. See your Lenovo Limited
Warranty documentation for full details.
Generalguidelines
WhenremovingorreplacingaFRU,besuretoobservethefollowinggeneralguidelines:
1.Donottrytoserviceanycomputerunlessyouhavebeentrainedandcertified.Anuntrainedpersonruns
theriskofdamagingparts.
2.BeforereplacinganyFRU,reviewChapter8“FRUreplacementnotices”onpage55.
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.
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