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Installing the DC Power Supply
Step 5
Use a ratcheting torque screwdriver to torque the terminal block plug captive screw (above the installed wire lead) from
4.425 in.-lb (.5 N-m) to 5.310 in-lb (.6 N-m).
Step 6
Repeat Step 4 through Step 5 for the remaining DC input power source wire and the ground wire.
Caution
Secure the wires coming in from the terminal block plug so that they cannot be disturbed by casual contact.
Step 7
Ensure that the terminal block plug is fully seated in the terminal block header on the DC power supply panel. The plug
has a locking feature. You should hear a snap or click when it is installed properly.
Step 8
Use a tie wrap to secure the wires to the rack, so that the wires are not pulled from the terminal block plug by casual
contact. Make sure the tie wrap allows for some slack in the ground wire.
Step 9
Use a tie wrap to secure the wires to the handle. Leave a service loop on the ground wire between the handle and the
connector such that it is the last to receive strain if the wires are pulled.
What to Do Next
This completes the procedure for connecting the DC power supply in the Cisco NCS 4216.
If you are installing a redundant DC power supply, repeat these steps for the second power source.
Activating the DC Power Supply
Perform the following procedure to activate the DC power supply:
SUMMARY STEPS
1. Remove the tape from the circuit-breaker switch handle, and restore power by moving the circuit-breaker
switch handle to the On (|) position.
2. Verify power supply operation by checking if the power supply front panel LEDs are in the following
states:
DETAILED STEPS
Step 1
Remove the tape from the circuit-breaker switch handle, and restore power by moving the circuit-breaker switch handle
to the On (|) position.
Step 2
Verify power supply operation by checking if the power supply front panel LEDs are in the following states:
• INPUT OK LED is green
• OUTPUT FAIL LED is green
If the LEDs indicate a power problem, see the Troubleshooting section.
If you are installing a redundant DC power supply, ensure that each power supply is connected to a separate power source
in order to prevent power loss in the event of a power failure.
If you are installing a redundant DC power supply, repeat these steps for the second power source.
Cisco NCS 4216 Hardware Installation Guide
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Installing the Cisco NCS 4216
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