User`s guide

– Turns off the SHELF_OK signal
– Activates the audible alarm
– Resets the host controller(s)
If one power supply SBB fails, but four or more power supply SBBs are still
functioning, the EMU generates a fault condition and performs the following
actions:
– Turns on the Shelf Fault (amber) LED on the front of the EMU
– Turns on the Fault (amber) LED located on the upper right corner on the
front of the SW300
• Senses cabinet temperature—The EMU senses two different temperatures:
warning and reset state. Warnings take place when the temperature is above
35°C (95°F). The EMU generates a fault condition and performs the following
actions:
– Turns on the Temperature (amber) LED on the EMU
– Turns on the Fault (amber) LED located on the upper right corner on the
front of the SW300
– Turns the dual speed blowers up to high speed
The SW300 is held in a reset state when the temperature is above 50°C
(122°F). The EMU performs the following actions:
– Turns off the System OK (green) LED located on the upper right corner
on the front of the SW300
– Turns off System OK (green) LED on the EMU
– Turns on the Fault (amber) LED on the EMU
– Turns off the SYSTEM_POWER_OK signal
• Monitors the power supply voltage—The EMU monitors the +12 V dc and +5
V dc cabinet power supplies and if the respective voltage drops below +9.2 V
dc or + 3.9 V dc, the EMU performs the following actions:
– Turns off the System OK (green) LED located on the upper right corner
on the front of the SW300
– Turns off the System OK (green) LED on the EMU
– Turns off the SYSTEM_POWER_OK signal
– Activates the audible alarm
Introduction to the SW300 Enclosure 1–7