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140 Sun Enterprise 220R Server Owner’s Guide • October 1999
The following table provides error code definitions.
Note – The Caps Lock LED blinks on and off to indicate that the POST diagnostics
are running; all other keys are off. When the LED lights steadily, it indicates an error.
Caps Lock Compose Scroll Lock Num Lock Failing FRU
On Off Off Off Main logic board
Off On Off Off CPU module 0
Off On On Off CPU module 1
On Off Off On No memory detected
On On On On Memory bank 0
On On Off On Memory bank 1
On On On Off Memory bank 2
On On On On Memory bank 3
Off Off Off On NVRAM