# a
lerts show current
Object Message
--------- -----------------
Encl=1:PowerSupply=2 EVT-ENVIRONMENT-00026: Power supply has failed
--------- -----------------
3. Enter the enclosure show powersupply command to check the status of each power supply.
# e
nclosure show powersupply
This command may take up to a minute to complete. Please wait...
--------- ----------- ------- ------
Enclosure Description Status
--------- -------------- -------
1 Power module 1 OK
1 Power module 2 FAILED
--------- -------------- -------
4. Map the number of the failed PSU to the physical location of that power supply.
As seen from the back of the system, both power supplies are on the right--hand side of the system. Power supply 1 is the
left-hand PSU, and power supply 2 is the right-hand PSU.
Remove a power supply
Prerequisites
Follow the safety guidelines listed in Safety instructions on page 13.
About this task
The technical white paper Servicing and Replacing Power Supplies for DellEMC PowerEdge R940/R740/R740xd Systems with
Single and Dual CMA Solutions provides additional details about removing power supplies with the cable management arms
installed on the back of the system.
Steps
1. Disconnect the power cable from the power source and from the PSU you intend to remove, and then remove the cable
from the strap on the PSU handle.
2. Press the release latch and slide the PSU out of the system by using the PSU handle.
32 Replace a Power Supply
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