4.Pulltheintrusionswitchtoremoveitfromtheheatsinkbr acket.
Figure44.Removingtheintrusionswitch
5.Followthissequencetoremovethefourscrewsthatsecuretheheatsinkandfanassemblytothe
systemboard:
a.Partiallyremovescrew1,thenfullyremovescrew2,andthenfullyremovescrew1.
b.Partiallyremovescrew3,thenfullyremovescrew4,andthenfullyremovescrew3.
Note:Carefullyremovethefourscrewsfromthesystemboardtoavoidanypossibledamagetothe
systemboard.Thefourscrewscannotberemovedfromtheheatsinkandfanassembly.
Figure45.Removingtheheatsink
6.Liftthefailingheatsinkoffthesystemboard.
Notes:
56ThinkCentreUserGuide