Dell PowerEdge T605 Hardware Owner's Manual (PDF) - Page 76

Removing a Redundant Power Supply NOTICE: The system requires one power supply to operate the system normally. On power-redundant systems, remove and replace only one power supply at a time in a system that is powered on. NOTICE: If you are replacing a redundant power supply while your system is running, make sure that both the power supply status and the AC line status LEDs are green before removing the power supply. See Figure 1-3 to identify the power supply LEDs. If one or both of the LEDs are not green, see "Troubleshooting Redundant Power Supplies" on page 171. 1 If your system has a single hot-plug power supply, turn off the system and all attached peripherals. For a redundant system, you can leave the system running and proceed to the next step. 2 Disconnect the power cable from the power source. 3 Disconnect the power cable from the power supply and remove the cable from the cable retention bracket. 4 Release the locking tab on the power supply by pressing in toward the center of the power supply, and rotate the power-supply handle up until the power supply is released from the chassis. See Figure 3-7. 5 Pull the power supply straight out to clear the chassis. 76 Installing System Components