Step 1
Ensure that the system (earth) ground connection has been made. See the following figure.
Step 2
If necessary, remove the blank power supply filler plate from the chassis power supply bay opening by loosening the
captive installation screws.
Step 3
Verify that power to the DC circuit connected to the power supply you are installing is off. To ensure that power has been
removed from the DC circuits, locate the circuit breakers for the DC circuits, switch the circuit breakers to the OFF
position, and tape the circuit-breaker switches in the OFF position.
Step 4
Grasp the power supply handle with one hand. Place your other hand underneath the power supply. Slide the power
supply into the power supply bay. Make sure that the power supply is fully seated in the bay.
Step 5
Tighten the captive installation screws of the power supply. The recommended maximum torque is 5.5 in.-lb (0.62 N-m).
Figure 22: Install DC Power Supply Module
Remove the AC Power Supply Module
This section describes how to remove and replace the AC power supply.
When you install the unit, the ground connection must always be made first and disconnected last. Statement
1046
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement
1030
Warning
Installation of the equipment must comply with local and national electrical codes. Statement 1074
Warning
Follow these steps to remove and replace the AC power supply:
Cisco NCS 540 Router Hardware Installation Guide
48
Replace Fan Module and Power Supply
Remove the AC Power Supply Module