Owners Manual

Table Of Contents
NOTE: When installing, hot-swapping, or hot-adding a new PSU in a system with two PSUs, allow several seconds for
the system to recognize the PSU and determine its status. The PSU status indicator turns green to signify that the PSU
is functioning properly.
Removing a cabled power supply unit
Prerequisites
CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by
your warranty. Read and follow the safety instructions that are shipped with your product.
1. Follow the safety guidelines listed in the Safety instructions section.
2. Follow the procedure listed in the Before working inside your system section.
3. Disconnect the power cable from the power source.
4. Disconnect the power cable from the power supply and remove the straps that bundle and secure the system cables.
NOTE: You may have to unlatch and lift the optional cable management arm if it interferes with the power supply unit
(PSU) removal. For information about the cable management arm, see the systems rack documentation.
Steps
1. Disconnect all the power cables from the PSU to the system board, hard drives, and optical drive.
2. Remove the screw securing the PSU to the chassis, slide and lift the power supply out of the chassis.
Figure 73. Removing a cabled PSU
1.
PSU 2. screw
3. P1 cable connector 4. P2 cable connector
5. P3 cable connector 6. standoff
7. Backplane connector
138 Installing and removing system components