Hardware Maintenance

Importantserviceinformation
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Usethefollowingstrategytopreventunnecessaryexpenseforreplacingand
servicingFRUs:
• IfyouareinstructedtoreplaceanFRU,butthereplacementdoesnotsolve
theproblem,reinstalltheoriginalFRUbeforeyoucontinue.
• Somecomputershavebothaprocessorboardandamainboard.Ifyouare
instructed
toreplaceeitherofthem,andreplacingoneofthemdoesnotsolve
theproblem,reinstallthatboard,andthenreplacetheotherone.
• IfanadapteroradeviceconsistsofmorethanoneFRU,anyoftheFRUsmay
bethecauseoftheerror.Beforereplacingtheadapterordevice,removethe
FRUsonebyonetoseeifthesymptomschange.ReplaceonlytheFRUthat
changedthesymptoms.
Attention:Thesetupconfigurationonthecomputeryouareservicingmayhave
beencustomized.RunningAutomaticConfigurationmayalterthesettings.Note
thecurrentconfigurationsettings(usingtheViewConfigurationoption);then,
whenservicehasbeencompleted,verifythatthosesettingsremainineffect.
Important notice for replacing a main board
Somecomponentsmountedonamainboardareverysensitive.Improper
handlingcancausedamagetothosecomponents,andmaycauseasystem
malfunction.
Attention:Whenhandlingamainboard:
• Donotdropthemainboardorapplyanyexcessiveforcetoit.
• Avoidroughhandlingofanykind.
• Avoidbendingthemainboardandhardpushingtopreventcrackingateach
BGA(BallGridArray)chipset.