Maintenance
Replacing a Power Supply Unit
R&S VENICE S
156
User Manual | 2906.2506.02 - 01
Replacing a Power Supply Unit
Requirements: Follow the safety guidelines listed in "Safety Instructions" on page 152
and "Safety and regulatory information" (page 7).
If applicable, remove the system from the rack.
Verify that both PSUs are of the same type and have the same
maximum output power, that is listed on the PSU label (shown in watts).
PSU Mismatch Conditions
Mixing PSUs from previous generations of
systems can result in a PSU mismatch condition or
failure to turn on.
If two PSUs are used, they must be of the same
maximum output power.
For AC PSUs, use only PSUs with the
Extended Power Performance (EPP) label on
the back.
Data Loss
The system needs one power supply for normal
operation.
On power-redundant systems, remove and
replace only one power supply at a time in a
system that is powered on.
You may have to unlatch and lift the optional cable management
arm if it interferes with power supply removal.
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