Motorola P880 manual Installing/Removing Fan Assemblies

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Installing/Removing Fan Assemblies

The Cajun P880 contains two fan assemblies:

■One large chassis fan tray containing ten fans to cool the logic section of the system.

■One smaller rear fan tray containing four fans, mounted on the lower rear panel to cool the switch elements.

Both fan assemblies are hot-swappable and contain fan management circuitry to:

■Provides power to the fans

■Supplies reduced voltage to the fans, for reduced speed operation

■Provides the Fan OK and present status signal to the CPU

■Forces full fan speed operation, in the event of a fan failure

■Accepts a control signal from the CPU, to force full fan speed in the event of an over-temperature condition.

1 - 18 Cajun P880 Routing Switch Installation Guide