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Hometabtoapply2tothetextthatyouwanttoappearhere. 4ReplacementProcedures
QosmioF50MaintenanceManual 4-5
BeforeYouBegin
Beforeyoubegintodisassemblethecomputer,keepinmindtheprecautionsandadviceinthis
section.AlwaysbegindisassemblybyremovingtheACadapterandbatterypack.Removethe
optionalpartsandaccessoriesaswell.Theproceduresforremovingthebatterieswillbe
explainedlater.
Disassemblethecomputeronlywhenanabnormalityhasoccurred.
Useonlytherecommendedtools.
Torunandstorethecomputer,besuretoprepareaworkingenvironmentthatisfreefrom:
Dustandcontaminants
Staticelectricity
Extremelyhighorlowtemperaturesandextremelyhighhumidity
RunthediagnostictestsexplainedinChapter2ofthismanualtoidentifytheFRUthathas
probablycausedthesystemfailure.
Performonlytherequiredmachineoperations.Useonlythedisassemblyandreinstallation
proceduresdescribedinthismanual.
Placetheremovedcomponentsinasafeplaceawayfromthecomputersothattheyarenot
damagedorgetinthewayofyoudoingyourwork.
Normally,anumberofscrewsneedtoberemovedorreplacedduringdisassembling.Placethe
removedscrewsinasafeplacesothatyoucaneasilyfindtherightscrewsfortheright
components.
Whenassemblingthecomputer,usethespecifiedscrewstofastenthepartstothespecified
locations.Seetheappropriateexplanationsandfiguresforscrewsizes.
Toavoidpersonalinjury,usecaretohandlecomponentsthathavesharpedgesorcorners.
AfteryouhavereplacedaFRU,checkthattheFRUworkscorrectlytoensurenormalcomputer
operation.