Lenovo System x3250 M4 - System Pulse Leds

Table13.Power-supplyLEDs(continued)
ACPower-supplyLEDs
ACDC
Error
DescriptionActionNotes
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.
OnOnOff
Normal
operation
OnOnOn
Powersupply
isfaultybutstill
operational
Replacethepowersupply.
SystempulseLEDs
ThissectiondescribesthesystempulseLEDsonthesystemboardthatmonitorsthesystempower-onand
power-offandbootprogress.
ThefollowingLEDsareonthesystemboardandmonitorthesystempower-onandpower-offsequencing
andbootprogress(see“System-boardLEDs”onpage24
forthelocationoftheseLEDs).
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.
3.WhenthisLEDgoesoffmomentarilyand
thenstartsblinkingslowing(approximately
1Hz),thisindicatesthatIMM2isfully
operational.Youcannowpressthe
power-controlbuttontopower-onthe
server.
4.(Trainedtechnicianonly)IfthisLEDdoes
notblinkwithin30secondsofconnecting
apowersourcetotheserver,replacethe
systemboard.
Chapter4.Troubleshooting95