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Module removal and replacement
Removing a PSU module
CAUTION:
Removing a power supply unit significantly disrupts the enclosure’s airflow. Do not remove the PSU until
you have received the replacement module. It is important that all FRU slots are filled when the enclosure is in operation.
Before removing the PSU, disconnect the power from the PSU by physically removing the power source in order to
ensure your system has warning of imminent power shutdown. A faulty PSU must be replaced by a fully operational PSU
as soon as possible. Ensure that you correctly identify the faulty PSU before beginning the step procedure.
1.
Stop all I/O from hosts to the enclosure. See also
.
TIP:
This step is not required for hot-swapping. However, it is required when replacing both PSUs at once.
2.
Use management software to shut down any other system components necessary.
TIP:
This step is not required for hot-swapping. However, it is required when replacing both PSUs at once.
3.
Disconnect the power cable from the PSU power connector to power off the faulty PSU (it has no power switch).
NOTE:
Power cables are typically routed to the PSU from the cable management arm (CMA). Verify that the
180º power cable bends lie flat in the CMA baskets. Ensure that the cable lays flat on the CMA shelf and through
the cable clip assembly. See also
and
“Routing power cords from the power supply units”
for more details.
4.
If replacing a single PSU via hot-swap, proceed to
.
5.
If replacing both PSUs, verify that the enclosure was shut down using management interfaces, and that the enclosure
is powered off.
6.
Verify that the power cord is disconnected.
7.
Grasp the PSU handle latch between the thumb and forefinger and press the latch tab down to unlock the handle.
Revolve the handle out and downward to lever the PSU out of the enclosure as shown in the figure below.
Figure 63 Removing a PSU (1 of 2)
