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

Steps
If you are installing a second power supply unit, remove the power supply unit blank in the bay by pulling the blank outward.
CAUTION: To ensure proper system cooling, the power supply unit blank must be installed in the second power
supply unit bay in a non-redundant configuration. Remove the power supply unit blank only if you are installing a
second power supply unit.
Figure 93. Removing a power supply unit blank
Next steps
Install the second power supply unit blank.

Installing a power supply unit blank

Prerequisites
1. Follow the safety guidelines listed in
NOTE: 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 94. 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
Safety instructions on page 29.
Safety instructions on page 29.
Installing and removing system components 109