Dell 1950 owner manual Removing a Power Supply

Removing a Power Supply

NOTICE: The system requires one power supply for the system to operate normally. The system is in the redundant mode when two power supplies are installed and both power supplies are connected to an AC power source. Remove and replace only one power supply at a time in a system that is powered on. Operating the system with only one power supply installed and without a power supply blank installed for extended periods of time can cause the system to overheat.

NOTICE: If only one power supply is installed, it must be installed in the left power supply bay (1).

NOTICE: If you connect the system to a power source in the range of 120 to 220 VAC, and if two power supplies are installed, the second power supply serves as a redundant, hot-plug power source.

NOTE: On your rack system, you may have to unlatch and lift the cable management arm if it interferes with power supply removal. For information about the cable management arm, see the system’s Rack Installation Guide.

1If your system has a single 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.

2Disconnect the power cable from the power source.

3Disconnect the power cable from the power supply and remove the cable from the cable retention bracket.

NOTICE: On a rack system, you may need to temporarily unlatch and lift the cable management arm. For information about the cable management arm, see the system’s Rack Installation Guide.

4Release the locking tab on the left side of the power supply by pressing in toward the right until the power supply is released from the chassis. See Figure 3-7.

5Holding the power-supply handle, pull the power supply straight out to clear the chassis.

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Installing System Components