Dell PowerEdge R740xd2 EMC Installation and Service Manual - Page 135

Installing a power supply unit blank, Removing a power supply unit

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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 118. Removing a power supply unit blank Next steps Replace a power supply unit blank. Installing a power supply unit blank Prerequisites 1. Follow the safety guidelines listed in Safety instructions. NOTE: If the system is using only one PSU, the PSU must be installed in PSU bay 1 and the PSU blank must be installed in PSU bay 2. Steps Align the PSU blank with the PSU bay and push it into the PSU bay until it clicks into place. Figure 119. Installing a power supply unit blank Next steps Follow the procedure listed in After working inside your system. 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. Installing and removing system components 135

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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 118. Removing a power supply unit blank
Next steps
Replace a power supply unit blank.
Installing a power supply unit blank
Prerequisites
1.
Follow the safety guidelines listed in
Safety instructions
.
NOTE:
If the system is using only one PSU, the PSU must be installed in PSU bay 1 and the PSU blank must be
installed in PSU bay 2.
Steps
Align the PSU blank with the PSU bay and push it into the PSU bay until it clicks into place.
Figure 119. Installing a power supply unit blank
Next steps
Follow the procedure listed in
After working inside your system
.
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.
Installing and removing system components
135