User Guide

The Fan Tray 19
Chapter 4
Fan Status LED
During operation, the Fan Status LED provides the following information:
Slot Labels
When the fan tray is installed in the Alcatel Wireless LAN Switch, these labels
name the module slots to the immediate right of the fan tray (see Figure 1-1 on
page 2).
Fans (on side)
Three independent fans provide redundancy for cooling the Alcatel Wireless
LAN Switch cards.
Replacing a Fan Tray
If hot swapping the fan tray, please be aware that there are time-critical
aspects to parts of the procedure. To ensure proper preparation, please read
through all the steps in the procedure before attempting the replacement.
Also, make sure you understand all the precautions in these steps as well as
those on page 6.
TABLE 4-1 Fan Status LED
Status Description
Off The fan tray is not operating.
Green The fan tray is receiving power and all three fans are operating
properly.
Amber One fan has failed, but the remaining two can provide proper
cooling until the fan tray can be conveniently replaced.
Red Two or more fans have failed. Replace the fan tray immediately.
3
4
5
CAUTION—This procedure should be performed by a trained technician.