Lenovo System x3550 M5 - Intermittent Problems; Keyboard, Mouse, or USB-Device Problems

Intermittentproblems
Usethisinformationtosolveintermittentproblems.
Table11.Intermittentproblemsandactions
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•Ifanactionstepisprecededby“(Trainedtechnicianonly),”thatstepmustbeperformedonlybyatrained
technician.
•GototheSupportWebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,hints,
tips,andnewdevicedriversortosubmitarequestforinformation.
SymptomAction
Aproblemoccursonly
occasionallyandisdifficultto
diagnose.
1.Makesurethat:
•Allcablesandcordsareconnectedsecurelytotherearoftheserverand
attacheddevices.
•Whentheserveristurnedon,airisflowingfromthefangrille.Ifthereis
noairflow,thefanisnotworking.Thiscancausetheservertooverheat
andshutdown.
2.Checkthesystem-errorlogorIMMeventlogs(see“Eventlogs”onpage64).
Theserverresets(restarts)
occasionally.
1.IftheresetoccursduringPOSTandthePOSTwatchdogtimerisenabled(click
SystemSettings➙Recovery➙SystemRecovery➙POSTWatchdogTimer
intheSetupUtilitytoseethePOSTwatchdogsetting),makesurethatsufficient
timeisallowedinthewatchdogtimeoutvalue(POSTWatchdogTimer).Ifthe
servercontinuestoresetduringPOST,seeAppendixB“UEFI/POSTdiagnostic
codes”onpage925andAppendixC“DSAdiagnostictestresults”onpage949.
2.Ifneitherconditionapplies,checkthesystem-errorlogorIMMsystem-event
log(see“Eventlogs”onpage64).
Keyboard,mouse,orUSB-deviceproblems
Usethisinformationtosolvekeyboard,mouse,orUSB-deviceproblems.
Table12.Keyboard,mouse,orUSB-device'ssymptomsandactions
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•Ifanactionstepisprecededby“(Trainedtechnicianonly),”thatstepmustbeperformedonlybyatrained
technician.
•GototheSupportWebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,hints,
tips,andnewdevicedriversortosubmitarequestforinformation.
SymptomAction
Allorsomekeysonthe
keyboarddonotwork.
1.Makesurethat:
•Thekeyboardcableissecurelyconnected.
•Theserverandthemonitorareturnedon.
2.IfyouareusingaUSBkeyboard,runtheSetupUtilityandenabletheoperation.
3.IfyouareusingaUSBkeyboardanditisconnectedtoaUSBhub,disconnect
thekeyboardfromthehubandconnectitdirectlytotheserver.
4.Replacethekeyboard.
ThemouseorUSB-device
doesnotwork.
1.Makesurethat:
•ThemouseorUSBdevicecableissecurelyconnectedtotheserver.
•ThemouseorUSBdevicedriversareinstalledcorrectly.
•Theserverandthemonitorareturnedon.
74LenovoSystemx3550M5InstallationandServiceGuide