If the LEDs indicate a power problem, see the
section.
If you are installing a redundant DC power supply, ensure that each power supply is connected to a separate
power source to prevent power loss during a power failure.
If you are installing a redundant DC power supply, repeat these steps for the second power source.
Removing and Replacing the DC Power Supply
This section provides information about removing and replacing the DC power supply in the Cisco NCS 4216.
The Cisco NCS 4216 power supplies are hot-swappable. If you have installed redundant power supply modules,
you can replace a single power supply without interrupting power to the router.
Note
To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after a power supply
has been removed or replaced.
Caution
When you install the unit, the ground connection must always be made first and disconnected last. Statement
1046
Warning
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
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 DC power supply on the Cisco NCS 4216:
Procedure
Step 1
Before servicing the power supply, switch off the circuit breaker in your equipment area. As an additional
precaution, tape the circuit-breaker switch in the Off position.
Step 2
Slip on the ESD-preventive wrist strap that was included in the accessory kit.
Step 3
Switch the power supply circuit-breaker switch to the Off (O) position.
Installing the Cisco NCS 4216
38
Installing the Cisco NCS 4216
Removing and Replacing the DC Power Supply
