Carrier Access Broadmore 1750 - Manual (Page 220)

8-32 Broadmore 1750 - Release 4.6
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.