Lenovo ThinkCentre M90p - Replacing the Microprocessor

1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.
2.Openthecomputercover.See“Openingthecomputercover”onpage68.
3.Pivottheopticaldrivebayassemblyupward.
4.Removetheharddiskdrivetoaccesstheheatsink.See“Replacingtheharddiskdrive”onpage84.
5.Carefullyremovethefourscrews1thatsecuretheheatsinktothesystemboard.
Note:Carefullyremovethefourscrewsfromthesystemboardtoavoidanypossibledamagetothe
systemboard.Thefourscrewscannotberemovedfromtheheatsink.
Figure16.Removingtheheatsink
6.Carefullylifttheheatsinkoffthesystemboard.
Notes:
a.Youmighthavetogentlytwisttheheatsinktofreeitfromthemicroprocessor.
b.Donottouchthethermalgreasewhilehandlingtheheatsink.
7.Positionthenewheatsinkonthesystemboardsothatthefourscrewsarealignedwiththeholes
onthesystemboard.
8.Alternatetighteningeachscrewasmallandequalamountuntiltheheatsinkissecuredtothesystem
board.Donotover-tightenthescrews.
9.Goto“Completingthepartsreplacement”onpage93.
Replacingthemicroprocessor
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacethemicroprocessor.
Chapter8.ReplacingFRUs(Machinetype:7536)79