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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter1 Hardware Installation
Backplane Access
Figure1-11 Removing the lower backplane cover

Procedure: Remove the Lower Backplane Cover

Step 1 Unscrew the five retaining screws that hold the clear plastic cover in place.
Step 2 Grasp the clear plastic cover at each side.
Step 3 Gently pull the cover away from the backplane (shown in Figure 1-11).
1.5.2 Alarm Interface Panel
The AIP is located above the alarm pin field on the lower section of the backplane. The AIP provides
surge protection for the ONS 15454. It also provides an interface from the backplane to the fan-tray
assembly and LCD. The AIP plugs into the backplane using a 96-pin DIN connector and is held in place
with two retaining screws. The panel has a non-volatile memory chip that stores the unique node address
(MAC address).
Note The 5-amp AIP card (73-7665-XX) is required when installing the new fan-tray assembly
(15454-FTA3). See the “Install the Fan-Tray Assembly” procedure on page 1-2 7.
The MAC address identifies the nodes that support circuits . It allows CTC to determine circuit sources,
destinations, and spans. The Timing Communication and Control+ (TCC+) cards in the O NS 15454 also
read the MAC address to store the node database. If the AIP fails, a MAC Fail alarm displays on the CTC
Alarms menu and/or the LCD display on the fan tray w ill go bla nk.
Note A blown fuse on the AIP board can cause the LCD di spla y to g o b lank .
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Retaining
screws