Lenovo ThinkCentre M90 Betriebsanweisung PDF herunterladen (Seite 33)

CAUTION:

Theheatsinkmightbeveryhot.Turnoffthecomputerandwaitthreetoveminutesto

letthecomputercoolbeforeopeningthecomputercover.

Toreplacetheheatsink,dothefollowing:

1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Openthecomputercover.See“Openingthecomputercover”onpage12.

3.Pivottheopticaldrivebayassemblyupward.See“Accessingthesystemboardcomponentsanddrives”

onpage12.

4.Removetheharddiskdrivetoaccesstheheatsink.See“Replacingtheharddiskdrive”onpage18.

5.Carefullyremovethefourscrews1thatsecuretheheatsinktothesystemboard.

Note:Carefullyremovethefourscrewsfromthesystemboardtoavoidanypossibledamagetothe

systemboard.Thefourscrewscannotberemovedfromtheheatsink.

Figure24.Removingtheheatsink

6.Carefullylifttheheatsinkoffthesystemboard.

Notes:

a.Youmighthavetogentlytwisttheheatsinktofreeitfromthemicroprocessor.

b.Donottouchthethermalgreasewhilehandlingtheheatsink.

7.Positionthenewheatsinkonthesystemboardsothatthefourscrewsarealignedwiththeholes

onthesystemboard.

8.Alternatetighteningeachscrewasmallandequalamountuntiltheheatsinkissecuredtothesystem

board.Donotover-tightenthescrews.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage32.

Chapter2.Installingorreplacinghardware25

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Lenovo ThinkCentre M90 Betriebsanweisung Seite 33