Thefollowingtabledescribestheproblemsthatareindicatedbyvariouscombinationsofthepower-supply
LEDsonadcpowersupplyandsuggestedactionstocorrectthedetectedproblems.
DCpower-supplyLEDs
INOUTError(!)DescriptionActionNotes
OnOn/
Blinking
Off
Normaloperation.
WhentheOUTLED
isblinkingasa1Hz
rate,thePSUisat
STANDBYmode,i.e.
noDCpoweroutput
fromthisPSU
OffOffOff
Noacpowertothe
serveroraproblem
withtheacpower
source.
1.Checktheacpowertothe
server.
2.Makesurethatthepower
cordisconnectedtoa
functioningpowersource.
3.Restarttheserver.Ifthe
errorremains,checkthe
power-supplyLEDs.
4.Iftheproblemremains,
replacethepower-supply.
Thisisanormal
conditionwhennoac
powerispresent.
OffOffOn
Thepowersupply
hasfailed.
Replacethepowersupply.
OffOn/
Blinking
Off
Thepowersupply
hasfailed.
Replacethepowersupply.
OffOn/
Blinking
On
Thepowersupply
hasfailed.
Replacethepowersupply.
OnOffOff
Power-supplynot
fullyseated,faulty
systemboard,or
thepowersupply
hasfailed.
1.Reseatthepowersupply.
2.UsethePowerConfigurator
utilitytoensurecurrent
systempowerconsumption
isunderlimitation.For
moreinformationandto
downloadtheutility,go
tohttp://www.ibm.com/
systems/bladecenter/
resources/powerconfig.html.
3.ChecktheerrorLEDson
thesystemboardandthe
IMM2errormessages.Follow
stepsin“Powerproblems”on
page93
and“Solvingpower
problems”onpage103until
theproblemissolved.
Typicallyindicatesa
power-supplyisnot
fullyseated.
OnOffOn
Thepowersupply
hasfailed.
Replacethepowersupply.
OnOn/
Blinking
On
Thepowersupply
hasfailed.
Replacethepowersupply.
SystempulseLEDs
ThefollowingLEDsareonthesystemboardandmonitorthesystempower-onandpower-offsequencing
andbootprogress(see“System-boardLEDs”onpage37forthelocationoftheseLEDs).
Chapter3.Troubleshooting77