Carrier Access 1750 user manual NIM Replacement

Maintenance and Troubleshooting

NIM Replacement

NIM Replacement

There are no field repairable items on a NIM. In a redundant configuration, replacement of a NIM will not impact user ATM network connectivity. In a single NIM configuration, all ATM connectivity will be disrupted during card replacement. Follow the steps below to replace a NIM.

1.Ensure that a replacement module is available.

2.Remove the chassis front cover. The Broadmore 1750 retains power; individual NIMs may be removed/replaced without power disruption to other modules.

3.Remove the fiber connection and loosen retaining screws at the top and bottom of the NIM to be replaced.

4.Use the installed ejectors to unseat the NIM from the midplane. This is done by simultaneously pushing up on the top ejector and down on the bottom ejector.

5.Remove the defective NIM by pulling it straight out the front.

6.Insert the replacement NIM, ensuring correct alignment with the card guides and midplane connector.

7.Firmly press the new NIM into place so that it is fully seated with the midplane connector. Tighten both retaining screws (finger tight only) and install the fiber connection.

8.The new NIM will automatically configure to the last known configuration of the slot where installed. In a single NIM system (non-redundant), originated SVCs and PVCs will be re-connected per the current connection list. The far end must originate the re-connection of incoming SVCs. Monitor activity for the ATM connection to ensure proper operation

9.Replace the chassis front cover.

10.Return the defective NIM for repair. Contact Customer Service for a Return Material Authorization (RMA) number and detailed procedures.

8-32 Broadmore 1750 - Release 4.6