Sun Microsystems 220R service manual Power Supply LEDs

Caps Lock	Compose	Scroll Lock	Num Lock	Failing FRU
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

Note - The Caps Lock LED flashes on and off to indicate that POST diagnostics are running; all other LEDs are off. When the LED lights steadily, it indicates an error.

7.12.1.3Power Supply LEDs

Power supply LEDs are visible from the front of the system when the doors are open. The following figure shows the LEDs on the power supply in bay 1.

214 Sun Enterprise 220R Server Service Manual ♦ January 2000, Revision A