Server User Manual

Symptom
Action
3.Replacethekeyboard.
Themouseorpointingdevicedoesnotwork.1.Makesurethat:
•Themouseorpointingdevicecableissecurely
connectedtotheserver.IftheUSBmouseor
pointingdeviceisconnectedtoaUSBhub,
disconnectthemouseorpointingdevicefromthe
hubandconnectitdirectlytotheserver.
•Themouseorpointingdeviceiscleanandnodust
accumulates.
•Thedevicedriversareinstalledcorrectly.
•TheUSBcontrollerisenabledintheSetupUtility
program.See“UsingtheSetupUtilityprogram”
onpage55
.
2.Restarttheserver.
3.Replacethemouseorpointingdevice.
AUSBdevicedoesnotwork.
1.Makesurethat:
•TheUSBcableissecurelyconnectedtotheserver.
IftheUSBdeviceisconnectedtoaUSBhub,
disconnectthedevicefromthehubandconnect
itdirectlytotheserver.
•Thedevicedriversareinstalledcorrectly.
•TheUSBcontrollerisenabledintheSetupUtility
program.See“UsingtheSetupUtilityprogram”
onpage55
.
2.Restarttheserver.
3.ReplacetheUSBdevice.
POSTerrorcodes
Eachtimeyouturnonthesystem,itperformsaseriesofteststhatcheckstheoperationofthesystemand
options.Thisseriesoftestsiscalledthepower-onself-test(POST).Toassistintroubleshootingasystem
hangduringthePOSTprocess,thePOSTcodediagnosticLEDsonthesystemboardcanbeusedto
identifythelastPOSTprocessexecuted.
Note:ThePOSTcodediagnosticLEDsandPOSTerrorcodeinformationareintendedonlyfortrained
servicepersonnelofLenovo.
Referto“SystemboardLEDs”onpage50
fordetailedinformationaboutthePOSTcodediagnosticLEDs
andPOSTerrorcodes.
Chapter7.Troubleshootinganddiagnostics177