Lenovo System x3550 M5 - Page 75

ThefollowingminimumconfigurationisrequiredforthedcLEDonthepowersupplytobelit:
•Powersupply
•Powercord
Note:YoumustturnontheserverforthedcLEDonthepowersupplytobelit.
Thefollowingillustrationshowsthelocationsofthepower-supplyLEDsontheacpowersupply.
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ac
dc
Figure30.acpower-supplyLEDs
Thefollowingtabledescribestheproblemsthatareindicatedbyvariouscombinationsofthepower-supply
LEDsonanacpowersupplyandsuggestedactionstocorrectthedetectedproblems.
acpower-supplyLEDs
acdcError(!)DescriptionActionNotes
OnOn/
Blinking
Off
Normaloperation.
On
Blinking
OffZeroOutputmode
Thezerooutputmode
isusedtoconfigure
thepowersupply
behaviorasstandard
redundantmodeor
zero-outputmode
bythehostsystem.
Whenthepower
supplyisconfigured
tothismode,minimal
powerconsumption
ismaintained.Atthe
sametime,thepower
supplywillkeepits
fanrotating,andthe
PSULEDshouldblink
atarateof1Hz.
Chapter3.Troubleshooting61