User Guide

Replacing the Power Supply: Dell PowerVault 720N, 740N, and 760N Service Manual

Replacing the Power Supply: Dell™ PowerVault™ 720N, 740N, and 760N Service Manual

This section describes the procedures for removing and installing the power supply in the PowerVault 720N, 740, and 760N filers.

NOTE: To maintain UL, CSA, and TUV safety certifications, you must obtain replacement power supplies from Dell.

The following figure shows the power supply location.

1	Two power supplies

To remove a power supply, perform the following steps.

Lift up the clip lock and unplug the AC power cord from the filer power supply(ies), as shown in the following figure.

1 Power supply

2 Power cord clip lock
Put on the antistatic wrist strap and attach the grounding leash to an acceptable grounding unit.
Loosen the power supply thumbscrews by turning each thumbscrew counterclockwise.

CAUTION:The power supply is heavy. Support the bottom of the unit while removing the unit from its bay.

To install a power supply, perform the following steps:

Turn the power supply so that its blind-mate connection faces the power supply bay on the filer.

1	Back of power supply
2	Blind-mate connection to backplane

You can only insert the power supply into the filer power supply bay in one way.

Push the power supply slowly and firmly into the bay until the power supply is firmly seated in the bay.

Turn the thumbscrew clockwise until it stops to secure the power supply in its bay.

NOTE: If the thumbscrews cannot be engaged and you cannot secure the power supply in its bay, the power supply was inserted the wrong way.

Plug the AC power cord into the AC power cord receptacle on the power supply and secure it with the clip lock.

Plug the other end of the AC power cord into the power outlet.

Turn on the filer.