Lenovo ThinkStation D20 Manual de usuario descargar pdf (Pagina 38)

1.Removethecomputercover.See“Removingthecomputercover”onpage11.

2.Laythecomputeronitssideforeasieraccesstotheheatsinkandfanassembly.

3.Y ourcomputersupportstwoheatsinkandfanassemblies.Locatetheheatsinkandfanassemblyyou

wanttoreplace.See“Locatingcomponents”onpage7.

4.Removetheheatsinkandfanassemblycablefromthesystemboard.Notethecablelocation.

5.Followthissequencetoremovethefourscrewsthatsecuretheheatsinkandfanassemblytothe

systemboard:

a.Partiallyremovescrew1,thenfullyremovescrew2,andthenfullyremovescrew1.

b.Partiallyremovescrew3,thenfullyremovescrew4,andthenfullyremovescrew3.

Note:Thefourscrewscanberemovedfromthesystemboard,buttheycannotberemovedfromthe

heatsinkandfanassembly.

Figure33.Removingtheheatsinkandfanassembly

6.Carefullylifttheheatsinkandfanassemblyoffthesystemboard.

Notes:

a.Y oumighthavetogentlytwisttheheatsinkandfanassemblytofreeitfromthemicroprocessor.

b.Donottouchthethermalgreasewhilehandlingtheheatsinkandfanassembly.

7.Removetheplasticcoverfromthebottomofthenewheatsinkandfanassemblytoexposethethermal

grease(thiscoverprotectsthethermalgreasefromcontamination).

Notes:

a.Donotremovetheplasticcoveruntilyouarereadytoinstalltheheatsinkandfanassemblyon

themicroprocessor.

b.Donottouchthethermalgreaseontheheatsinkandfanassembly.

c.Donotputtheheatsinkandfanassemblyanywhereexceptonthemicroprocessoraftertheplastic

coverhasbeenremovedandthethermalgreaseexposed.

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Lenovo ThinkStation D20 Manual de usuario Pagina 38