Attention: Static electricity that is released to internal server componentswhen the server is powered-on might cause the server to halt, which mightresult in the loss of data. To avoid this potential problem, always use anelectrostatic-discharge wrist strap or other grounding system when you workinside the server with the power on.2. If only one power supply is installed, turn off the server and peripheral devicesand disconnect all power cords.3. Press the release latch on the hot-swap power supply and pull it out from theserver.4. If you are instructed to return the power supply, follow all packaginginstructions, and use any packaging materials for shipping that are supplied toyou.Replacing a hot-swap power supplyThe following notes describe the type of power supply that the server supportsand other information that you must consider when you replace a power supply:v To confirm that the server supports the power supply that you are installing, seehttp://www.ibm.com/systems/info/x86servers/serverproven/compat/us/.v Before installing an additional power supply or replace a power supply with oneof a different wattage, the user may use the IBM Power Configurator utility todetermine current system power consumption. For more information and todownload the utility, go to http://www-03.ibm.com/systems/bladecenter/resources/powerconfig.htmlv The server comes with one hot-swap 12-volt output power supply that connectsto power supply bay 1. The input voltage is 100 - 127 V ac or 200 - 240 V acauto-sensing.v Power supplies in the server must be with the same power rating or wattage toensure that the server will operate correctly.v Power supply 1 is the default/primary power supply. If power supply 1 fails,you must replace the power supply with the same wattage immediately.v The user can order an optional power supply for redundancy.v These power supplies are designed for parallel operation. In the event of apower-supply failure, the redundant power supply continues to power thesystem. The server supports a maximum of two power supplies.Chapter 6. Removing and replacing components 399
