CHAPTER 4: Installing Components www.gateway.com52Replacing a power supply moduleCautionThe power supplies in this server containno user-serviceable parts. Only aqualified computer technician shouldservice the power supplies.Your server comes with 3-wire AC powercords fitted with the correct plug style foryour region. If this plug does not matchthe connector on your surge protector,UPS, or wall outlet, do not attempt tomodify the plug in any way. Use a surgeprotector, UPS, or wall outlet that isappropriate for the supplied AC powercords.Your server uses as many as two 700 W hot-swappable power supply modules.If your server has both power supply modules installed, the modules act asredundant, hot-swappable power supplies. If one of the two power suppliesfails, the other power supply supports the server while you replace the failedpower supply. You do not need to turn off the server or disconnect peripheraldevices to replace a failed redundant power supply.If your server is only equipped with a single power supply, the server must beturned off and the AC power cord removed before replacing it.To replace a power supply module:1 If your server is equipped with more than one power supply module,determine which power supply module has failed (the LED on the powersupply will be orange).2 If your server has only one power supply module installed, make sure thatyou turn off the server, then unplug the power cord before continuing.- OR -If your server has two power supply modules installed, you do not needto turn off the power to the server before continuing.3 Press the retaining clip (1) on the power supply to the left to release thepower supply module (2) from the chassis.4 Pull the power supply module straight out of the server with the handle.It may take considerable force to remove.5 Push the new power supply module into the server, with the retaining clipon the right, until it locks into place.6 Reconnect the AC power cord for the new power supply module.