CHAPTER 4: Installing Components

11Push down the heat sink retaining levers (3) and lock them under the retaining hooks on the heat sink socket.

12Follow the instructions in “Closing the server case” on page 30.

Replacing a power supply module

Caution

The power supplies in this server contain no user-serviceable parts. Only a qualified computer technician should service the power supplies.

Your server comes with 3-wire AC power cords fitted with the correct plug style for your region. If this plug does not match the connector on your surge protector, UPS, or wall outlet, do not attempt to modify the plug in any way. Use a surge protector, UPS, or wall outlet that is appropriate for the supplied AC power cords.

Your server uses as many as two 650 W hot-swappable power supply modules. If your server has both power supply modules installed, the modules act as redundant, hot-swappable power supplies. If one of the two power supplies fails, the other power supply supports the server while you replace the failed power supply. You do not need to turn off the server or disconnect peripheral devices to replace a failed redundant power supply.

If your server is only equipped with a single power supply, the server must be turned off and the AC power cord removed before replacing it.

To replace a power supply module:

1If your server is equipped with more than one power supply module, determine which power supply module has failed (the LED on the power supply will be orange).

2If your server has only one power supply module installed, make sure that you turn off the server, then unplug the power cord before continuing.

- OR -

If your server has two power supply modules installed, you do not need to turn off the power to the server before continuing.

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