Lenovo M90 Betriebsanweisung PDF herunterladen (Seite 29)

4.DisconnectthefrontaudioandUSBassemblycablesfromthesystemboardandnotethecablesrouting.

See“Locatingpartsonthesystemboard”onpage9.

5.RemovethescrewthatsecuresthefrontaudioandUSBassemblytothechassis.

Figure18.RemovingthefrontaudioandUSBassembly

6.LocatethepowerswitchassemblybesidethefrontaudioandUSBassembly.Removethepowerswitch

assemblybyreleasingthetabthatsecuresthepowerswitchassemblytothechassis.

7.CompletelyremovethefailingfrontaudioandUSBassemblyfromthechassis.

8.InstallthenewfrontaudioandUSBassemblyintothechassisandalignthescrewholeinthefrontaudio

andUSBassemblywiththecorrespondingholeinthechassis.

9.InstallthescrewtosecurethenewfrontaudioandUSBassemblytothechassis.

10.Installthenewpowerswitchassemblyintothechassis.

11.ConnectthefrontUSB,frontpanel,andfrontaudiocablestothesystemboard.See“Locatingpartson

thesystemboard”onpage9.

12.Reinstallthefrontbezel.See“Removingandreinstallingthefrontbezel”onpage12.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage25

Replacingtheacpoweradapter

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”

intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre

SafetyandWarrantyGuide,goto:

http://www.lenovo.com/support

Thissectionprovidesinstructionsonhowtoreplacetheacpoweradapter.

Toreplacetheacpoweradapter,dothefollowing:

Chapter2.Installingorreplacinghardware21

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Lenovo M90 Betriebsanweisung Seite 29