2 
OFF | The principal switch is in the OFF |
| position. |
The system is in standby mode and | |
| the operating system is halted. The |
| circuit breaker can be turned off. |
DIAGNOSTICS | System is powered on. If system is |
| rebooted, POST will display extended |
| diagnostic messages. |
CYCLING | System or board is operating |
| normally. |
LOCKED | Board: |
| System: running in secure mode and |
| will not respond to commands from |
| the console. The key can be removed. |
UNLOCKED | Board |
| unlocked. |
POWER | Board is receiving DC power. |
SERVICE | System has detected a hardware |
| failure. |
PROTECTIVE EARTH | Earth ground. |
CHASSIS | Frame or chassis ground. |
Safety Precautions and Tools Requirements |
