Carrier Access 1750 user manual CPU IOM Replacement, Fan Replacement

Maintenance and Troubleshooting

CPU IOM Replacement

9.Return the defective CPU card for repair. Contact Customer Service for an RMA number and detailed procedures.

CPU IOM Replacement

There are no field-repairable items on the CPU IOM. This module does contain a unique part of the Ethernet address such that the Broadmore 1750 system must be alerted to the module change in order to restore service. Only replace the standby CPU or CPU IOM on a redundant system. This will ensure correct programming of the IP, CIP, LANE and ATM address information.

1.Ensure that you have a replacement CPU IOM with remote reboot jumpers set correctly.

2.Follow the CAMMI sequence on the next page to signal CPU IOM removal.

3.Loosen top and bottom retaining screws, use ejectors to unseat the module, and pull it straight out to remove.

4.Insert the replacement CPU IOM, ensuring alignment with the guides and midplane connector. Tighten both retaining screws (finger tight only).

5.Return the defective CPU IOM for repair. Contact Customer Service for an RMA number and detailed procedures.

Fan Replacement

There are no field-repairable items on the fan tray assembly. The air filters are removable for routine cleaning. Removal and replacement of the fan assembly will not impact normal Broadmore 1750 operations. This replacement should be completed quickly to avoid possible overheating of Broadmore 1750 components. Follow the steps below to replace the fan assembly.

1.Ensure that you have a replacement fan tray assembly.

2.Loosen retaining screws on both sides of the fan assembly to be replaced.

3.Remove the defective fan assembly from below the chassis by pulling it straight out.

4.Insert the replacement fan assembly, ensuring alignment in the side guides.

8-36 Broadmore 1750 - Release 4.6