Replacing a power cooling module (PCM)
This section provides procedures for replacing a failed power cooling module (PCM). Illustrations in PCM replacement procedures show
rear panel views of the enclosure, with the PCM properly oriented for insertion into the rear panel of the enclosure.
A single PCM is sufficient to maintain operation of the enclosure. You need not halt operations and completely power-off the enclosure
when replacing only one PCM; however, a complete orderly shutdown is required if replacing both units simultaneously.
CAUTION:
Do not remove the cover from the PCM due to danger from electric shock inside. Return the PCM to your supplier for
repair.
Before you begin any of the procedures, see the
..
NOTE:
The illustrations show PCM module replacement within the right slot as you view the enclosure rear panel. To replace a
PCM in the left slot, first rotate the module 180º about its longitudinal axis, so that it properly aligns with its connectors on the
back of the midplane.
Removing a PCM
CAUTION:
Removing a power supply unit significantly disrupts the enclosure’s airflow. Do not remove the PCM until you have
received the replacement module. It is important that all slots are filled when the enclosure is in operation.
Before removing the PCM, disconnect the power from the PCM by either the mains switch (where present) or by physically removing the
power source in order to ensure your system has warning of imminent power shutdown. Ensure that you correctly identify the faulty PCM
before beginning the step procedure.
1
Stop all I/O from hosts to the enclosure. See
Shutting down a controller module
.
NOTE:
This step is not required for hot-swapping. However, it is required when replacing both PCMs at once.
2
Use management software to shut down any other system components necessary.
NOTE:
This step is not required for hot-swapping. However, it is required when replacing both PCMs at once.
3
Switch off the faulty PCM, and disconnect the power supply cable.
4
If replacing a single PCM using hot-swap, proceed to step 6.
5
If replacing both PCMs, verify that the enclosure was shut down using management interfaces, and that the enclosure is powered off.
6
Verify that the power cable is disconnected.
7
Grasp the latch and the side of the PCM handle between thumb and forefinger, squeeze together and open the handle to cam the
PCM out of the enclosure as shown in
Figure 63. Removing a PCM (1 of 2)
.
Module removal and replacement
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