Server User Manual

•Takeadditionalcarewhenhandlingdevicesduringcoldweather.Heatingreducesindoorhumidity

andincreasesstaticelectricity.

Workinginsidetheserverwiththepoweron

Attention:

Staticelectricitythatisreleasedtointernalservercomponentswhentheserveristurnedonmightcausetheserverto

halt,whichmightresultinthelossofdata.Toavoidthispotentialproblem,alwaysuseanelectrostatic-dischargewrist

straporothergroundingsystemwhenyouworkinsidetheserverwiththepoweron.

Theserversupportshot-swapdevicesandisdesignedtooperatesafelywhileitisturnedonandthecoveris

removed.Followtheseguidelineswhenyouworkinsidetheserverwiththepoweron:

•Avoidwearingloose-ttingclothingonyourforearms.Buttonlong-sleevedshirtsbeforeworkinginside

theserver;donotwearcufflinkswhileyouareworkinginsidetheserver.

•Donotallowyournecktieorscarftohanginsidetheserver.

•Removejewelry,suchasbracelets,necklaces,rings,andloose-ttingwristwatches.

•Removeitemsfromyourshirtpocket,suchaspensandpencils.Theseitemsmightfallintotheserveras

youleanoverit.

•Avoiddroppinganymetallicobjectsintotheserver,suchaspaperclips,hairpins,andscrews.

Guidelinesfortrainedservicetechnicians

Thissectioncontainsinformationfortrainedservicetechnicians.

Inspectingforunsafeconditions

UsetheinformationinthissectiontohelpyouidentifypotentialunsafeconditionsinaLenovoproductthat

youareworkingon.EachLenovoproduct,asitwasdesignedandmanufactured,hasrequiredsafetyitems

toprotectusersandservicetechniciansfrominjury.Theinformationinthissectionaddressesonlythose

items.Usegoodjudgmenttoidentifypotentialunsafeconditionsthatmightbecausedbynon-Lenovo

alterationsorattachmentofnon-Lenovofeaturesoroptionsthatarenotaddressedinthissection.Ifyou

identifyanunsafecondition,youmustdeterminehowseriousthehazardisandwhetheryoumustcorrect

theproblembeforeyouworkontheproduct.

Considerthefollowingconditionsandthesafetyhazardsthattheypresent:

•Electricalhazards,especiallyprimarypower.Primaryvoltageontheframecancauseseriousorfatal

electricalshock.

•Explosivehazards,suchasadamagedCRTfaceorabulgingcapacitor.

•Mechanicalhazards,suchaslooseormissinghardware.

Toinspecttheproductforpotentialunsafeconditions,completethefollowingsteps:

1.Makesurethatthepowerisoffandthepowercordisdisconnected.

2.Makesurethattheexteriorcoverisnotdamaged,loose,orbroken,andobserveanysharpedges.

3.Checkthepowercord:

•Makesurethatthethird-wiregroundconnectorisingoodcondition.Useametertomeasure

third-wiregroundcontinuityfor0.1ohmorlessbetweentheexternalgroundpinandtheframeground.

•Makesurethatthepowercordisthecorrecttype.

•Makesurethattheinsulationisnotfrayedorworn.

Chapter5.ReplacingFRUs31