Nortel Networks 400 4.0 Restarting the system after maintenance, To shut down the system hardware

232Chapter 20 Preparing hardware for maintenance or upgrades

To shut down the system hardware

Warning: Remove all of the connections to the BCM system before you power down the system.

Failure to disconnect lines before you power down the system can cause damage to the system.

1Remove the DS256 cables from the front of the BCM main unit and, if present, the expansion unit. This includes the data connections on the MSC.

Mark the cables to ensure correct reconnection.

Warning: You must disconnect power from the main unit after you have performed an Element Manager shutdown. The main unit cannot start operating again until after power has been disconnected and then reconnected.

2Turn off the power switch located at the back of the BCM main unit and expansion unit.

3Disconnect the BCM main unit and expansion unit power cords from the AC outlet.

4Ensure you have room to access the part you are working on. Remove the BCM main unit from the rack, if necessary.

Restarting the system after maintenance

When you finish your shutdown maintenance procedure, restart the BCM system in the order described in this section.

To restore the system to operation

1Ensure that all cables inside the housing are connected snugly to the correct boards, and excess cables are bundled neatly, out of the way.

2Replace the bezel on the BCM main unit, if you removed it.

3Replace the main unit top cover and replace the screws.

4If you removed the BCM main unit from the rack or wall, replace it.

5Plug the expansion unit, if there is one, into the AC power source.

6Plug the BCM main unit into the AC power source.

7Turn on the power switch on the BCM main unit. The BCM system starts booting.

Warning: When you restart the system, all IP clients, voice mail, and VoIP ports are not available until the system services restart.

N0060612