Chapter 5: Subsystem Maintenance
Subsystem Maintenance
5-15
Figure 5-20: Label on the PSU Handle
•
Immediate replacement:
When a PSU fails, it should be replaced
immediately. However, do not remove the PSU module unless a
replacement is readily available. Removing a PSU without a
replacement will cause severe disruptions to the internal airflow and the
subsystem will overheat, possibly causing irreparable damage to some
of the subsystem components.
5.6.2 Replacing the PSU Module
WARNING!
Although the PSU modules are fully redundant, it is not advisable to run
the
A16F-R2422
with a single PSU module for an extended period of
time. If the second PSU module fails, the subsystem will be shut down.
To replace a PSU, please follow these steps:
Step 1.
Turn off the PSU.
Using the power switch can be found on the
right side of each PSU module. (See
Figure 5-21
)
Step 2.
Remove the power cable
that connects the A16F-R2422 to the main
power source. The power socket is found on the left side of each
power supply module. (See
Figure 5-21
)
Figure 5-21: Power Sockets and Power Switches
Step 3.
Remove the PSU retention screw
at the top right-hand side of the
PSU. (See
Figure 5-22
)
