Fan-Tray Assembly
The fan-tray assembly is located at the bottom of the ONS 15454 bay assembly. The fan tray is a removable
drawer that holds fans and fan-control circuitry for the ONS 15454. The front door can be left in place or
removed before installing the fan-tray assembly. After you install the fan tray, you should only need to access
it if a fan failure occurs or if you need to replace or clean the fan-tray air filter.
The front of the fan-tray assembly has an LCD screen that provides slot- and port-level information for all
ONS 15454 card slots, including the number of Critical, Major, and Minor alarms. For optical cards, you can
use the LCD to determine if a port is in working or protect mode and is active or standby. The LCD also tells
you whether the software load is SONET or SDH and the software version number.
Note: The 15454-SA-ANSI or 15454-SA-HD shelf assembly and 15454-FTA3 or 15454-CC-FTA fan-tray
assembly are required with any ONS 15454 that has XC10G or XC-VXC-10G cards.
Caution! The 15454-FTA3-T fan-tray assembly can only be installed in ONS 15454 Release 3.1 and later
shelf assemblies (15454-SA-ANSI, P/N: 800-19857; 15454-SA-HD, P/N: 800-24848). The fan-tray
assembly has a pin that prevents it from being installed in ONS 15454 shelf assemblies released before ONS
ONS_15454_Reference_Manual_R8.5.x_--_Shelf_and_Backplane_Hardware
Figure 1-36: Detectable Filler Card Faceplate 48
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