Lenovo ThinkCentre Edge 91 - Replacing the Heat Sink and Fan Assembly

11.Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage104.
Replacingtheheatsinkandfanassembly
Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Important
safetyinformation”onpage1.
Thissectionprovidesinstructionsonhowtoreplacetheheatsinkandfanassembly.
CAUTION:
Theheatsinkandfanassemblymightbeveryhot.Turnoffthecomputerandwaitthreetove
minutestoletthecomputercoolbeforeremovingthecomputercover.
Toreplacetheheatsinkandfanassembly,dothefollowing:
1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.
2.Removethecomputercover.See“Removingthecomputercover”onpage79.
3.Laythecomputeronitssideforeasieraccesstothesystemboard.
4.Locatetheheatsinkandfanassembly.See“Locatingcomponents”onpage76.
5.Disconnecttheheatsinkandfanassemblycablefromthemicroprocessorfanconnectoronthesystem
board.See“Locatingpartsonthesystemboard”onpage77.
94ThinkCentreHardwareMaintenanceManual