Installing A Power Supply Unit Blank; Removing A Power Supply Unit - Dell EMC PowerEdge R940 Installation And Service Manual

Installing a power supply unit blank

Prerequisites
1 Follow the safety guidelines listed in
2 Install the power supply unit (PSU) blank only in the second PSU bay.
Steps
Align the PSU blank with the PSU slot and push it into the PSU slot until it clicks into place.
Figure 87. Installing a power supply unit blank

Removing a power supply unit

The procedure for removing AC and DC PSUs is identical.
Prerequisites
CAUTION: The system needs one power supply unit (PSU) for normal operation. On power-redundant systems, remove and
replace only one PSU at a time in a system that is powered on.
1 Follow the safety guidelines listed in
2 Disconnect the power cable from the power source and from the PSU you intend to remove, and then remove the cable from the
strap on the PSU handle.
3 Unlatch and lift the optional cable management arm if it interferes with the PSU removal.
For information about the cable management arm, see the system's rack documentation at Dell.com/poweredgemanuals.
Steps
Press the orange release latch and slide the PSU out of the system by using the PSU handle.
Safety instructions.
Safety instructions.
Installing and removing system components 135