Chapter 5: Subsystem Maintenance and Upgrading
Replacing
a Faulty PSU
5-13
severe disruptions to the internal airflow and the subsystem will
overheat, possibly causing irreparable damage to some of the subsystem
components.
WARNING!
Although the PSUs are fully redundant, it is not advisable to run the
subsystem with a single PSU for an extended period of time.
5.5.2 Replacing the PSU
WARNING!
Before you install a replacement PSU, be sure that it has the same
warning text on its extraction handle as that shown on the handle of a
remaining PSU. Double-check to avoid mixing a similar yet different
PSU of another Galaxy series.
To replace a PSU, please follow these steps:
Step 1.
Turn off the PSU.
The power switch is located on each PSU’s
rear-facing panel. (See
Figure 5-11
)
Step 2.
Disconnect the power cord
that connects the faulty PSU to the
main power source.
Figure 5-11: Locations of Power Sockets and Power Switches
Step 3.
Remove the PSU retention screw
that secures the extraction
handle to the chassis. (See
Figure 5-12
)
