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Important service information
Usethefollowingstrategytopreventunnecessaryexpenseforreplacingand
servicingFRUs:
• IfyouareinstructedtoreplaceanFRU,butthereplacementdoesnotsolve
theproblem,reinstalltheoriginalFRUbeforeyoucontinue.
• Somecomputers havebothaprocessorboardand asystem board.Ifyou
areinstructedtoreplaceeitherofthem,andreplacingoneofthemdoesnot
solvetheproblem,reinstallthatboard,andthenreplacetheotherone.
• IfanadapteroradeviceconsistsofmorethanoneFRU,anyoftheFRUs
maybethecauseofthe error. Beforereplacing theadapter ordevice,
removetheFRUsonebyonetoseeifthesymptomschange.Replaceonly
theFRUthatchangedthesymptoms.
Attention:Thesetupconfigurationonthecomputeryou areservicingmay
havebeencustomized.RunningAutomaticConfiguration mayalter the
settings.Notethecurrentcongurationsettings(usingtheViewConguration
option);then,whenservice hasbeen completed,verifythatthosesettings
remainineffect.
Strategy for replacing a hard disk drive
Alwaystrytorun alow-level formatbeforereplacingaharddiskdrive.This
willcauseallcustomerdataontheharddisk tobe lost.Make surethatthe
customerhasacurrentbackupofthedatabeforeperformingthisaction.
Attention:Thedrivestartupsequenceinthecomputeryouareservicingmay
havebeenchanged.Beextremelycareful duringwrite operationssuch as
copying,saving,orformatting.Ifyouselectanincorrectdrive,dataorprograms
canbeoverwritten.
Important notice for replacing a system board
Somecomponentsmountedon asystem boardare verysensitive. Improper
handlingcancausedamagetothosecomponents,andmaycauseasystem
malfunction.
Attention:Whenhandlingasystemboard:
• Donotdropthesystemboardorapplyanyexcessiveforcetoit.
• Avoidroughhandlingofanykind.
• Avoidbendingthe systemboardandhardpushingtopreventcrackingat
eachBGA(BallGridArray)chipset.