Lenovo System x3550 M4 - Working Inside the Server with the Power on; Handling Static-Sensitive Devices

•Eachofthepower-supplybayshasapowersupplyorafillerinstalledinit.
•Iftheserverhasredundantpower,eachofthepower-supplybayshasapowersupplyinstalledinit.
•Thereisadequatespacearoundtheservertoallowtheservercoolingsystemtoworkproperly.Leave
approximately50mm(2.0in.)ofopenspacearoundthefrontandrearoftheserver.Donotplace
objectsinfrontofthefans.Forpropercoolingandairflow,replacetheservercoverbeforeyouturnon
theserver.Operatingtheserverforextendedperiodsoftime(morethan30minutes)withtheserver
coverremovedmightdamageservercomponents.
•Youhavefollowedthecablinginstructionsthatcomewithoptionaladapters.
•Youhavereplacedafailedfanwithin48hours.
•Youhavereplacedahot-swapfanwithin30secondsofremoval.
•Youhavereplacedahot-swapdrivewithin2minutesofremoval.
•Youhavereplacedafailedhot-swappowersupplywithin2minutesofremoval.
•Youdonotoperatetheserverwithouttheairbaffleinstalled.Operatingtheserverwithouttheairbaffle
mightcausethemicroprocessortooverheat.
•Microprocessorsocket2alwayscontainseitherasocketcoveroramicroprocessorandheatsink.
•Youhaveinstalledthefourthandsixthfanswhenyouinstalledthesecondmicroprocessoroption.
Workinginsidetheserverwiththepoweron
Usethisinformationwhenworkinginsidetheserverwiththepoweron.
Attention:Staticelectricitythatisreleasedtointernalservercomponentswhentheserverispowered-on
mightcausetheservertohalt,whichmightresultinthelossofdata.Toavoidthispotentialproblem,
alwaysuseanelectrostatic-dischargewriststraporothergroundingsystemwhenyouworkinsidethe
serverwiththepoweron.
Youmighthavetohavetheserverturnedonwhilethecoverisoff,tolookatlightpathdiagnosticsLEDsor
replacehotswapcomponents.Followtheseguidelineswhenyouworkinsideaserverthatisturnedon:
•Avoidwearingloose-fittingclothingonyourforearms.Buttonlong-sleevedshirtsbeforeworkinginside
theserver;donotwearcufflinkswhileyouareworkinginsidetheserver.
•Donotallowyournecktieorscarftohanginsidetheserver.
•Removejewelry,suchasbracelets,necklaces,rings,andloose-fittingwristwatches.
•Removeitemsfromyourshirtpocket,suchaspensandpencils,thatcouldfallintotheserverasyou
leanoverit.
•Avoiddroppinganymetallicobjects,suchaspaperclips,hairpins,andscrews,intotheserver.
Handlingstatic-sensitivedevices
Usethisinformationtohandlestatic-sensitivedevices.
Attention:Staticelectricitycandamagetheserverandotherelectronicdevices.Toavoiddamage,keep
static-sensitivedevicesintheirstatic-protectivepackagesuntilyouarereadytoinstallthem.
Toreducethepossibilityofdamagefromelectrostaticdischarge,observethefollowingprecautions:
•Limityourmovement.Movementcancausestaticelectricitytobuilduparoundyou.
•Theuseofagroundingsystemisrecommended.Forexample,wearanelectrostatic-dischargewrist
strap,ifoneisavailable.Alwaysuseanelectrostatic-dischargewriststraporothergroundingsystem
whenworkinginsidetheserverwiththepoweron.
•Handlethedevicecarefully,holdingitbyitsedgesoritsframe.
Chapter2.Installingoptionaldevices33