Lenovo System x3500 M4 - Page 170

Table27.Powerproblemsandactions
SymptomAction
Thepower-controlbuttondoes
notwork,andtheresetbutton
doesnotwork(theserverdoes
notstart).
Note:Thepower-control
buttonwillnotfunctionuntil
approximately5to10seconds
aftertheserverhasbeen
connectedtopower.
1.Makesurethatthepower-controlbuttonisworkingcorrectly:
a.Disconnecttheserverpowercords.
b.Reconnectthepowercords.
c.(Trainedtechnicianonly)Reseattheoperatorinformationpanelcable,and
thenrepeatsteps1aand1b.
•(Trainedtechnicianonly)Iftheserverstarts,reseattheoperatorinformation
panel.Iftheproblemremains,replacetheoperatorinformationpanel.
•Iftheserverdoesnotstart,bypassthepower-controlbuttonbyusingthe
forcepower-onjumper(see“System-boardswitchesandjumpers”on
page29
).Iftheserverstarts,reseattheoperatorinformationpanel.Ifthe
problemremains,replacetheoperatorinformationpanel.
2.Makesurethat:
a.Thepowercordsarecorrectlyconnectedtotheserverandtoaworking
electricaloutlet.
b.Thetypeofmemorythatisinstallediscorrect.
c.TheDIMMisfullyseated.
d.TheLEDsonthepowersupplydonotindicateaproblem.
e.Themicroprocessorsareinstalledinthecorrectsequence.
3.Reseatthefollowingcomponents:
a.DIMMs
b.(Trainedtechnicianonly)Powerswitchconnector
c.(Trainedtechnicianonly)Powerbackplane
4.Replacethefollowingcomponentsoneatatime,intheordershown,restarting
theservereachtime:
a.DIMMs
b.(Trainedtechnicianonly)Powerswitchconnector
c.(Trainedtechnicianonly)Powerbackplane
d.(Trainedtechnicianonly)Systemboard
5.Ifyoujustinstalledanoptionaldevice,removeit,andrestarttheserver.If
theservernowstarts,youmighthaveinstalledmoredevicesthanthepower
supplysupports.
6.See“Power-supplyLEDs”onpage139.
7.See“Solvingundeterminedproblems”onpage161.
Theserverdoesnotturnoff.
1.DeterminewhetheryouareusinganAdvancedConfigurationandPower
Interface(ACPI)oranon-ACPIoperatingsystem.Ifyouareusinganon-ACPI
operatingsystem,completethefollowingsteps:
a.PressCtrl+Alt+Delete.
b.Turnofftheserverbypressingthepower-controlbuttonfor5seconds.
c.Restarttheserver.
d.IftheserverfailsPOSTandthepower-controlbuttondoesnotwork,
disconnectthepowercordfor5seconds;then,reconnectthepowercord
andrestarttheserver.
2.IftheproblemremainsorifyouareusinganACPI-awareoperatingsystem,
suspectthesystemboard.
Theserverunexpectedlyshuts
down,andtheLEDsonthe
See“Solvingundeterminedproblems”onpage161
.
156Systemx3500M4InstallationandServiceGuide