Specifications

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Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 3 Maintenance
Electrical Interface Assembly Replacement
Note SMB EIAs support 14 ports per slot when used with a DS-1 card, 12 ports per slot when used with a
DS-3 or EC-1 card, and 6 ports per slot when used with a DS3XM-6 card.
3.14.2 EIA Replacement Procedures
The replacement procedure is the same for all the EIA types. However, installing the AMP Champ EIA
requires the additional step of attaching the fastening plate to the bottom of the connector row. Before
you attach a new EIA, you must remove the backplane cover or EIA already attached to the ONS 15454.
Procedure: Remove the Backplane Cover or EIA
Step 1 To remove the lower backplane cover, loosen the five screws that secure it to the ONS 15454 and pull
the backplane away from the shelf assembly.
Step 2 Loosen the nine perimeter screws that hold the backplane sheet metal cover in place. Do not remove the
interior screws.
Note If you are removing an AMP Champ EIA, remove the fastening plate before proceeding. To
remove the fastening plate, loosen the two thumbscrews.
Step 3 If a backplane cover is attached to the ONS 15454, lift the panel by the bottom to remove it from the
shelf assembly and store the panel for later use.
Step 4 If an EIA is attached to the ONS 15454, lift the EIA handles and gently pull the EIA panel away from
the backplane.
Note Attach backplane sheet metal covers whenever EIAs are not installed.
Procedure: Install the EIAs
Step 1 Line up the connectors on the EIA with the mating connectors on the backplane.
Step 2 Gently push the EIA until both sets of connectors fit together snugly.
Step 3 Replace the nine perimeter screws that you removed while removing the backplane cover.
Step 4 If you are installing an AMP Champ EIA, attach the fastening plate with the two thumbscrews.
Step 5 Reattach the lower backplane cover.
Due to the large number of BNC connectors on the High-Density BNC EIA, you might require a special
tool for inserting and removing BNC EIAs (Figure 3-14). This tool also helps with ONS 15454 patch
panel connections.