5.Dependingontheheatsinkandfanassemblyyouwanttoreplace,dooneofthefollowing:
•Ifyouarereplacingheatsinkandfanassembly1,gotostep6.
•Ifyouarereplacingheatsinkandfanassembly2,dothefollowing:
a.Removetheopticaldrive.See“Replacingtheopticaldrive”onpage27.
b.Pivottheopticaldrivebracketasshowninthefollowingillustrationandthenremoveitfrom
thechassis.Gotostep6.
Figure27.Removingtheopticaldrivebracket
6.Disconnecttheheatsinkandfanassemblycablefromthesystemboard.Notethecablelocation.
7.Followthissequencetoremovethefourscrewsthatsecuretheheatsinkandfanassemblytothe
systemboard:
a.Partiallyremovescrew1,thenfullyremovescrew2,andthenfullyremovescrew1.
b.Partiallyremovescrew3,thenfullyremovescrew4,andthenfullyremovescrew3.
Note:Carefullyremovethefourscrewsfromthesystemboardtoavoidanypossibledamagetothe
systemboard.Thefourscrewscannotberemovedfromtheheatsinkandfanassembly.
30ThinkStationUserGuide