The top three are the same as they are for all Circuit Packs:
Red: Alarm! The system has detected a fault in this circuit pack. The Alarm Log should contain an on-board alarm for this circuit pack or one of the maintenance objects associated with it. The red LED is also lit briefly when a circuit pack is inserted or reset. If the circuit pack passes its initialization tests, the LED is extinguished. If a fault is detected, it remains lit.
Green: Testing. The system is currently running tests on this circuit pack as part of background maintenance or demand testing. This LED is also lit briefly during initialization tests when a circuit pack is inserted or reset.
Yellow: Busy. The circuit pack is currently in use by the system.
The next 4 (Labeled STATUS 1-4) are related to 120A CSU operation. For a complete explanation of their purpose and meaning download the following manual:
regs,
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