User manual

ideapad 320-17IKB/ideapad 320H-17IKB/ideapad 320L-17IKB/ideapad 320R-17IKB/

ideapad 320E-17IKB/ideapad 320-17ISK/ideapad 320H-17ISK/ideapad 320L-17ISK/

ideapad 320R-17ISK/ideapad 320E-17ISK Hardware Maintenance Manual

Removing and replacing an FRU

Thissectionpresentsexplodedgureswiththeinstructionstoindicate howto

removeandreplacetheFRU.Makesuretoobservethefollowinggeneralrules:

1. Donotattempttoserviceanycomputerunlessyouhavebeentrainedand

certied.Anuntrainedpersonrunstheriskofdamagingparts.

2. BeforereplacinganyFRU,review“FRUreplacementnotices”onpage31.

3. Beginbyremovingany FRUsthathavetobe removedbeforethefailing

FRU.AnyofsuchFRUsarelistedatthetopofthepage.Removethemin

theorderinwhichtheyarelisted.

4. FollowthecorrectsequenceinthestepstoremovetheFRU,asgiveninthe

guresbythenumbersinsquarecallouts.

5. WhenturningascrewtoreplaceanFRU,turnitinthedirectionasgivenby

thearrowinthegure.

6. WhenremovingtheFRU,moveitinthedirectionas givenbythearrowin

thegure.

7. ToputthenewFRUin place,reversetheremovalproceduresandfollow

anyofthenotesthatpertainto replacement.Forinformation about

connectingandarranginginternalcables,see“Locations”onpage62.

8. WhenreplacinganFRU,usethecorrectscrewasshownintheprocedures.

DANGER

Before removing any FRU, turn off the computer, unplug all power cords from

electrical outlets, remove the battery pack, and then disconnect any of the

interconnecting cables.

Attention:AfterreplacinganFRU,donotturnonthecomputeruntilyouhave

madesurethatallscrews,springs,andothersmallpartsareinplaceandnone

areloose insidethecomputer.Verifythis byshakingthe computergentlyand

listeningforrattlingsounds.Metallicpartsormetalakescan causeelectrical

shortcircuits.

Attention:Thesystem boardissensitiveto, andcanbe damagedby,

electrostaticdischarge. Beforetouchingit,establish personalgroundingby

touchingagroundpointwithonehandorusinganelectrostaticdischarge(ESD)

strap(P/N6405959)toremovepotentialshockreasons.