Frame Fan Failure

In order to diagnose and repair a cooling fan failure, you must identify the fan that the switcher is reporting as failed on the Status Menu, and replace the fan.

All the fans on the 4RU Fan and 8RU Fan boards are assigned a number. This number is what is reported on the menu for which fan has failed.

Figure 1. 4RU Fan Board
Figure 2. 8RU Fan Board