2. If only one power supply is installed, turn off the server and peripheral devicesand disconnect all power cords. Meanwhile, if two power supplies are installed,it is not necessary to turn off the server and peripheral devices and disconnectall power cords.3. Hold the power-supply handle and press the orange release latch to the leftsimultaneously.4. Press and hold the orange release tab to the left. Grasp the handle and pull thepower supply out of the server.5. Release the latch and use other hand to provide support to the power supplyas you pull remaining portion out of the bay.6. 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 ac power supplyUse this information to replace a hot-swap ac power supply.About this taskThe following items describe the type of power supply that the server supportsand other information that you must consider when you install 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 The server comes standard with one 750-watt or 900-watt hot-swap powersupply. The input voltage is 110 V ac or 220 V ac auto-sensing.Note: You cannot mix 110 V ac and 220 V ac, or 750-watt and 900-watt powersupplies in the server, it is not supported.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.v The server can run fully configured with one power supply. For redundancysupport, you must install the second hot-swap power supply.Note: You cannot mix high-efficiency and non-high-efficiency power supplies inthe server.Statement 5Figure 114. Power supply removalChapter 6. Removing and replacing components 203
