You can remove and replace either of the two hot-swap redundant power supply units
(PSUs) in the node. These redundant power supplies operate in parallel, one continuing
to power the node if the other fails.
About this task
Notes:
Do not insert a PSU if the PSU slot does not contain a power interposer.
Do not operate the node without a power interposer and PSU in a PSU slot for longer
than 5 minutes. Operating for longer than this period might cause the node to shut
down due to overheating.
Remove the replacement PSU from its packaging and have it available before carrying out
this procedure.
No tools are required to complete this task. Do not remove or loosen any screws.
Although many components are hot-swappable, they are intended to be used only when your
system is not active (no I/O operations). If your system is powered on and processing I/O
operations, go to the management GUI and follow the fix procedures. Initiating the replacement
actions without the assistance of the fix procedures can result in loss of data or loss of
access to data.
Be careful when you are replacing the hardware components that are located in the back of
the system. Do not inadvertently disturb or remove any cables that you are not instructed to
remove.
When you replace this part, you must follow recommended procedures for handling
electrostatic discharge (ESD)-sensitive devices.
Procedure
Identify the location of the PSU that requires service. The Event Log contains the node MTM and
serial number and the number of the PSU. Looking at the back of the node, PSU 1 is on the left and
PSU 2 is on the right
Removing the PSU
Release the cable retention clip and disconnect the power cord from the power supply unit
that you are replacing.
This figure shows the location of the cable retention clip 1 ,
LED indicator 2 , PSU 1 release tab 3 ,
PSU handle 4 , and the power interposer release tab
5 . Figure 1. Features of a power supply unit
Fold out the handle so that it extends perpendicular to the PSU.
Holding the PSU handle, press and hold the PSU release tab and steadily pull the handle
horizontally to slide the PSU from the node, as shown in this figure.
Support the PSU with your other hand as it is released from the node.
Figure 2. Removing the power supply unit
Important: Insert the replacement PSU within 5 minutes; otherwise, the system may
overheat and shut down.
Replacing the PSU
Fold out the handle so that it extends perpendicular to the PSU.
While keeping the PSU handle extended and supporting the PSU, slide the power supply into
the node until the release tab engages with a click.
Connect the power cord to the power supply and to a properly grounded electrical outlet.
Secure the cable with the cable retention clip on the rear of the power supply unit.
Note: After the power cord is connected to the electrical outlet, make sure that
the LED indicator on the PSU is lit.
When you replace this part, you must follow recommended procedures for handling
electrostatic discharge (ESD)-sensitive devices.
Important: Insert the replacement PSU within 5 minutes; otherwise, the system may overheat and shut down.