Installing A Dc Power Supply Module - Cisco NCS 4201 Hardware Installation Manual

Installing the Cisco NCS 4201

Installing a DC Power Supply Module

Note Open and remove the door before performing this procedure. See
Perform the following procedure to install a power supply module:
Step 1 Ensure that the system (earth) ground connection has been made. For ground connection installation instructions, see the
Installing the Chassis Ground Connection
Step 2 If present, 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 metal tab with one hand. Place your other hand underneath the power supply. Slide the power
supply into the power supply bay as shown in figure below. Make sure that the power supply is fully seated in the bay.
Figure 17: Installing a DC Power Supply
Step 5
Tighten the captive installation screw of the power supply. The recommended maximum torque is 5.5 in.-lb (.62 N-m).
If you are installing a redundant DC power supply, repeat these steps for the second power source too.
section.
Cisco NCS 4201 Hardware Installation Guide
Installing a DC Power Supply Module
Removing the Front Door section.
45