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1. In the management GUI, you can identify the faulty PSU from the Monitoring > Hardware page.
You can also run the mmhealth node show enclosure command on the canister of the affected
enclosure.
To identify the affected enclosure, run the mmhealth cluster show enclosure command. The
faulty enclosure will be in an DEGRADED or FAILED state.
A faulty power supply would be indicated by the power_supply_failed, power_supply_absent,
power_high_power, power_high_current or power_no_power events. In the given example, the
event message shows the psu1_left_id0 power supply needs to be replaced:
mmhealth node show enclosure
Node name:
fab3-1-b.example.com
Component
Status
---------------------------------------------------------------------------------------------
----------------------------------------------
ENCLOSURE
DEGRADED
78E021A
DEGRADED
Event
---------------------------------------------------------------------------------------------
------------------------------
power_supply_failed
psu1_left_id0 is failed
Removing the PSU
2. 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
PSU handle
4
, and the power interposer release tab
Figure 7. Features of a power supply unit
3. Fold out the handle so that it extends perpendicular to the PSU.
4. Holding the PSU handle, press and hold the PSU release tab and steadily pull the handle horizontally
to slide the PSU from the enclosure, as shown in this figure.
Support the PSU with your other hand as it is released from the enclosure.
Status Change
Reasons
1 day ago
power_supply_failed(78E021A)
1 day ago
power_supply_failed(78E021A)
Parameter
Severity
78E021A
WARNING
5
.
Active Since
Event Message
Now
Power supply
1
, LED indicator
2
, PSU 1 release tab
Chapter 2. Servicing 25
3
,
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