Lenovo A1000L Important service information

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system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 system board
Somecomponentsmountedonasystemboardareverysensitive.Improper
handlingcancausedamagetothosecomponents,andmaycauseasystem
malfunction.
Attention:Whenhandlingasystemboard:
•Donotdropthesystemboardorapplyanyexcessiveforcetoit.
•Avoidroughhandlingofanykind.
•Avoidbendingthesystemboardandhardpu shingtopreventcrackingat
eachBGA(BallGridArray)chipset.