CISCO 15310-MA-FTA

The fan-tray assembly is located at the top of the ONS 15310-MA shelf assembly, under the air filter, rear exhaust, and air inlet. The fan tray is a removable drawer that holds four fans and the fan-control circuitry for the ONS 15310-MA. After you install the fan tray, you should only need to access it if a fan failure occurs. The front of the fan-tray assembly has CRIT, MAJ, and MIN alarm LEDs that indicate that there are Critical, Major, and Minor alarm present on the ONS 15310-MA assembly.