Dell EMC PowerEdge R940xa, Инструкция по установке и обслуживанию, Страница: 140 / 177

Figure 107. Removing a power supply unit blank
Next steps
1. Replace the PSU or the PSU blank .
Installing the power supply unit blank
Prerequisites
1. Follow the safety guidelines listed in Safety instructions .
2. Install the power supply unit (PSU) blank in the available PSU bay.
Steps
Align the PSU blank with the PSU slot and push it into the PSU slot until it clicks into place.
Figure 108. Installing the 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 .
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. Remove the optional strain relief bar and bracket if it interferes with the PSU removal.
For information about the strain relief bar and bracket, see the Rail Installation Guide at www.dell.com/poweredgemanuals .
Steps
1. Press the orange release latch.
2. Slide the PSU out of the system by using the PSU handle.
140 Installing and removing system components