Lenovo ThinkServer RD640 - Page 66

1.Removeallmediafromthedrivesandturnoffallattacheddevicesandtheserver.Then,disconnectall
powercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtotheserver.
2.Iftheserverisinstalledinarackcabinet,removetheserverfromtherackcabinetandplaceitonaflat,
clean,andstatic-protectivesurface.SeetheRackInstallationInstructionsthatcomeswiththeserver.
3.Removetheservercover.See“Removingtheservercover”onpage77.
4.Ifnecessary,removethecoolingshroud.See“Removingandreinstallingthecoolingshroud”onpage
82
.
5.LocatetheClearCMOSjumperonthesystemboard.Then,removeanypartsanddisconnectany
cablesthatmightimpedeyouraccesstothejumper.
6.MovetheClearCMOSjumperfromthedefaultnormalposition(pin1andpin2)totheshort-circuited
position(pin2andpin3).
7.Waitmorethan10secondsandthenmovetheClearCMOSjumperbacktothenormalposition(pin1
andpin2).
8.Reinstallanypartsandreconnectanycables.Then,reinstalltheservercover.See“Completingthe
partsreplacement”onpage184.
9.Connecttheservertoanacpowersourceandwaitabout30seconds.Then,turnontheserver.The
BIOSsettingsturntothefactorydefaultsettings.
2TMMEnable/Disablejumper(alsoknownasBMCEnable/Disablejumper)
WhentheTMMEnable/Disablejumperisinthedefaultnormalposition(pin1andpin2),theserverneeds
about30secondsfortheTMMtoinitializewheneveryouconnecttheservertoanacpowersource.Ifyou
pressthepowerswitchonthefrontpanelduringthisperiod,theserverwillnotstartimmediately;itwill
startaftertheTMMinitializationfinishes.
IfyoumovetheTMMEnable/Disablejumpertopin2andpin3,theTMMfunctionisnotavailableandthe
serverwillbedirectlyturnedonwhenyoupressthepowerswitchwithoutwaitingfortheTMMtobeready.
52ThinkServerRD640UserGuideandHardwareMaintenanceManual