Lenovo System x3250 M5 - System Pulse Leds

Table13.Power-supplyLEDs
ACPower-supplyLEDs
ACDCErrorDescriptionActionNotes
OnOnOff
Normal
operation
OffOffOff
Noacpower
totheserveror
aproblemwith
theacpower
source.
1.Checktheacpowertotheserver.
2.Makesurethatthepowercordis
connectedtoafunctioningpower
source.
3.Restarttheserver.Iftheerrorremains,
checkthepower-supplyLEDs.
4.Iftheproblemremains,replacethe
power-supply.
Thisisanormal
conditionwhenno
acpowerispresent.
OnOffOff
Faultysystem
boardorfaulty
powersupply
1.Turnofftheserveranddisconnect
thepowercordfromtheserver;then,
reconnectthepowercord.
2.Ifthesystemboarderror(fault)LEDis
notlit,replacethepowersupply.
3.(Trainedtechnicianonly)Ifthesystem
boarderrorLEDislit,replacethe
systemboard.
Typicallyindicates
thatapowersupply
isnotfullyseated.
Thisisanormal
conditionbefore
turningonthe
system.
OnOffor
Flashing
On
Faultypower
supply
Replacethepowersupply.
OnOnOn
Powersupply
isfaultybutstill
operational
Replacethepowersupply.
SystempulseLEDs
ThissectiondescribesthesystempulseLEDsonthesystemboardthatmonitorsthesystempower-onand
power-offandbootprogress.
ThefollowingLEDsareonthesystemboardandmonitorthesystempower-onandpower-offsequencing
andbootprogress(see“System-boardLEDs”onpage29forthelocationoftheseLEDs).
Table14.SystempulseLEDs
LEDDescriptionAction
RTMMheartbeat
Power-onandpower-off
sequencing.
1.IftheLEDblinksat1Hz,itisfunctioning
properlyandnoactionisnecessary.
2.IftheLEDisnotblinking,(trainedtechnician
only)replacethesystemboard.
IMM2heartbeatIMM2heartbeatbootprocess.
Thefollowingstepsdescribethedifferentstages
oftheIMM2heartbeatsequencingprocess.
1.WhenthisLEDisblinkingfast
(approximately4Hz),thisindicates
thattheIMM2codeisintheloading
process.
2.WhenthisLEDgoesoffmomentarily,this
indicatesthattheIMM2codehasloaded
completely.
Chapter4.Troubleshooting121