9
Caution – If the left green LED is lit, do not remove the board. Electrical
!shorting will result, damaging the board and the system. For the CPU/Memory and I/O boards:
•If the yellow LED (middle LED) is continuously lit (not flashing) the board requires service.
•If the left and right green LEDs are off, the board is ready for removal.
•If no LEDs are flashing, the system is hung.
•If no LEDs are lit, there is no electrical power to the board.
Table
Table 9-2 Board Status LED Codes
Power | Service | Cycling |
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| Condition |
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Off | Off | Off | Board has no electrical power. | ||
Off | On | Off | Board is in low power mode, can be unplugged. | ||
Off | Off | Flashing | Undefined. | ||
Off | On | Flashing | Undefined. | ||
On | Off | Off | System is hanging, either in POST/OBP or OS. | ||
On | Off | On | Hung in OS. | ||
On | On | Off | (Hung in POST/OBP) or (hung in OS and failed | ||
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| component on board). |
On | On | On | (Hung in POST/OBP) or (hung in OS and failed | ||
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| component on board). |
On | Off | Flashing | OS running. System is operating normally. | ||
On | On | Flashing | OS running and failed component on board. | ||
On | Flash | Off | Slow flash = POST. Fast flash = OBP. | ||
On | Flash | On | OS or OBP error. | ||
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Ultra Enterprise 6000/5000/4000 Systems |
