Lenovo ThinkServer TD230 - Guidelines for Servicing Electrical Equipment

4.Removethecover.
5.Checkforanyobviousnon-Lenovoalterations.Usegoodjudgmentastothesafetyofanynon-Lenovo
alterations.
6.Checkinsidetheserverforanyobviousunsafeconditions,suchasmetallings,contamination,wateror
otherliquid,orsignsofreorsmokedamage.
7.Checkforworn,frayed,orpinchedcables.
8.Makesurethatthepower-supplycoverfasteners(screwsorrivets)havenotbeenremovedortampered
with.
Guidelinesforservicingelectricalequipment
Observethefollowingguidelineswhenservicingelectricalequipment:
•Checktheareaforelectricalhazardssuchasmoistoors,nongroundedpowerextensioncords,power
surges,andmissingsafetygrounds.
•Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlesthatarecoveredwithasoft
materialthatdoesnotprovideinsulationfromliveelectricalcurrents.
•Regularlyinspectandmaintainyourelectricalhandtoolsforsafeoperationalcondition.Donotuse
wornorbrokentoolsortesters.
•Donottouchthereectivesurfaceofadentalmirrortoaliveelectricalcircuit.Thesurfaceisconductive
andcancausepersonalinjuryorequipmentdamageifittouchesaliveelectricalcircuit.
•Somerubberoormatscontainsmallconductiveberstodecreaseelectrostaticdischarge.Donotuse
thistypeofmattoprotectyourselffromelectricalshock.
•Donotworkaloneunderhazardousconditionsornearequipmentthathashazardousvoltages.
•Locatetheemergencypower-off(EPO)switch,disconnectingswitch,orelectricaloutletsothatyoucan
turnoffthepowerquicklyintheeventofanelectricalaccident.
•Disconnectallpowerbeforeyouperformamechanicalinspection,worknearpowersupplies,orremove
orinstallmainunits.
•Beforeyouworkontheequipment,disconnectthepowercord.Ifyoucannotdisconnectthepower
cord,havethecustomerpower-offthewallboxthatsuppliespowertotheequipmentandlockthe
wallboxintheoffposition.
•Neverassumethatpowerhasbeendisconnectedfromacircuit.Checkittomakesurethatithasbeen
disconnected.
•Ifyouhavetoworkonequipmentthathasexposedelectricalcircuits,observethefollowingprecautions:
–Makesurethatanotherpersonwhoisfamiliarwiththepower-offcontrolsisnearyouandisavailableto
turnoffthepowerifnecessary.
–Whenyouareworkingwithpowered-onelectricalequipment,useonlyonehand.Keeptheother
handinyourpocketorbehindyourbacktoavoidcreatingacompletecircuitthatcouldcausean
electricalshock.
–Whenyouuseatester,setthecontrolscorrectlyandusetheapprovedprobeleadsandaccessories
forthattester.
–Standonasuitablerubbermattoinsulateyoufromgroundssuchasmetaloorstripsandequipment
frames.
•Useextremecarewhenyoumeasurehighvoltages.
•Toensurepropergroundingofcomponentssuchaspowersupplies,pumps,blowers,fans,andmotor
generators,donotservicethesecomponentsoutsideoftheirnormaloperatinglocations.
•Ifanelectricalaccidentoccurs,usecaution,turnoffthepower,andsendanotherpersontogetmedical
aid.
42ThinkServerTD230HardwareMaintenanceManual