Lenovo ThinkCentre M91p - Replacing the Front Audio and USB Assembly

8.Connectthenewsystemfanassemblycabletothesystemfanconnectoronthesystemboard.See
“Locatingpartsonthesystemboard”onpage12.
9.Reinstalltheharddiskdrive.See“Replacingtheharddiskdrive”onpage50.
Whattodonext:
•Toworkwithanotherpieceofhardware,gototheappropriatesection.
•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage69
.
ReplacingthefrontaudioandUSBassembly
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagevii.
ThissectionprovidesinstructionsonhowtoreplacethefrontaudioandUSBassembly.
ToreplacethefrontaudioandUSBassembly,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Openthecomputercover.See“Openingthecomputercover”onpage30.
3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage30.
4.PivottheopticaldrivebayupwardanddisconnectthefrontaudioandUSBassemblycablesfromthe
systemboardandnotethecablesrouting.See“Locatingpartsonthesystemboard”onpage12
.
5.RemovethescrewthatsecuresthefrontaudioandUSBassemblybracket.Thenremovethefront
audioandUSBassemblybracketfromthechassis.
Figure47.RemovingthefrontaudioandUSBassembly
62ThinkCentreUserGuide