Installing a AC power supply unit
Prerequisites
1. Follow the safety guidelines listed in
on page 65.
2. For systems that support redundant PSU, ensure that both the PSUs are of the same type and have the same maximum output
power.
NOTE:
The maximum output power (shown in watts) is listed on the PSU label.
Steps
Slide the PSU into the system until the PSU is fully seated and the release latch snaps into place.
Figure 44. Installing a power supply unit
Next steps
1. Connect the power cable to the PSU, and plug the cable into a power outlet.
CAUTION:
When connecting the power cable to the PSU, secure the cable to the PSU with the strap.
NOTE:
When installing, hot swapping, or hot adding a new PSU, wait for 15 seconds for the system to recognize the
PSU and determine its status. The PSU redundancy may not occur until discovery is complete. Wait until the new
PSU is discovered and enabled before you remove the other PSU. The PSU status indicator turns green to signify
that the PSU is functioning properly.
Removing a DC power supply unit
Prerequisites
NOTE:
For equipment using –(48–60) V DC power supply units (PSUs), a qualified electrician must perform all
connections to DC power and to safety grounds. Do not attempt connecting to DC power or installing grounds yourself.
All electrical wiring must comply with applicable local or national codes and practices. Damage due to servicing that is
not authorized by Dell is not covered by your warranty. Read and follow all safety instructions that came with the
product.
CAUTION:
The system needs one PSU for normal operation. On power-redundant systems, remove and replace only one
PSU at a time in a system that is powered on.
84
Installing and removing system components
Summary of Contents for 7CX5T
Page 21: ...Figure 16 Configuration and layout Dell EMC PowerEdge T640 overview 21 ...
Page 22: ...Figure 17 Electrical overview 22 Dell EMC PowerEdge T640 overview ...
Page 23: ...Figure 18 Memory information Dell EMC PowerEdge T640 overview 23 ...
Page 24: ...Figure 19 System tasks 24 Dell EMC PowerEdge T640 overview ...
