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ideapad 320-14IAP/ideapad 320-14AST/ideapad 320-15IAP/ideapad 320-15AST/ideapad
320-15ABR/ideapad 320-15ABR Touch Hardware Maintenance Manual
Removing and replacing an FRU
Thissectionpresentsexplodedgureswiththeinstructions toindicatehowto
removeandreplacetheFRU.Makesuretoobservethefollowinggeneralrules:
1. Donotattempttoserviceanycomputerunlessyouhavebeentrainedand
certied.Anuntrainedpersonrunstheriskofdamagingparts.
2. BeforereplacinganyFRU,review“FRUreplacementnotices”onpage33.
3. BeginbyremovinganyFRUsthathave toberemovedbeforethefailing
FRU.AnyofsuchFRUsarelistedatthetopofthepage.Removethemin
theorderinwhichtheyarelisted.
4. FollowthecorrectsequenceinthestepstoremovetheFRU,asgiveninthe
guresbythenumbersinsquarecallouts.
5. WhenturningascrewtoreplaceanFRU,turnitinthedirectionasgivenby
thearrowinthegure.
6. WhenremovingtheFRU,moveitinthe directionasgivenbythearrowin
thegure.
7. To putthenewFRUinplace,reversetheremovalproceduresandfollow
anyofthenotesthatpertaintoreplacement.For informationabout
connectingandarranginginternalcables,see“Locations”onpage68.
8. WhenreplacinganFRU,usethecorrectscrewasshownintheprocedures.
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:AfterreplacinganFRU,donotturnonthecomputeruntilyouhave
madesurethatallscrews,springs,andothersmallpartsareinplaceandnone
areloose insidethe computer.Verifythis byshaking thecomputer gentlyand
listeningforrattlingsounds.Metallicpartsormetal akescancauseelectrical
shortcircuits.
Attention:Thesystem boardis sensitiveto, andcan bedamaged by,
electrostaticdischarge. Beforetouching it,establish personalgrounding by
touchingagroundpointwithonehandorusinganelectrostaticdischarge(ESD)
strap(P/N6405959)toremovepotentialshockreasons.