Sierra Video Ponderosa 3G Series Routing Switcher Family with MediaNav - Manual (Page 23)

PONDEROSA
17
Redundant Power Supplies
If redundant power supplies are ordered, the frame will contain two complete power
supplies with health monitoring LEDs. If a power supply should fail the other power
supply will automatically take over.
If a non-redundant power supply system is ordered, the redundant power supply slot will
contain a power supply frame with only the fan and health monitoring LEDs. This is
referred to as a “fan sled”. The “Module power” LED will not be lit on the fan sled. The
redundant power AC connection need not be connected for units with non-redundant
power supplies. The fan sled will operate from the primary power supply.
The “Fault” LED (red) turns on if there is a fan failure.