Sun Microsystems 2000E installation manual Bottom Top Power Supply

2

	Sense cable to top power supply
Sense cable to bottom power supply	Sense cable to backplane

Power supply adapter board

LEDs (2 each)

Bottom	Top
Power Supply	Power Supply

Figure 2-23Power Supply Adapter Board LEDs

Table 2-1LED Status Indicators

Location	LED	Condition
Front panel	Left LED	On — DC power supply is receiving AC current.
	(green)	Off — There is no DC power.
	Middle LED	On — (first 60 seconds) Self tests are running.
	(yellow)	Off — (after self tests end) No hardware failures.
		On — (after self tests end) Hardware failure was detected.
	Right LED	Off — (first 60 seconds) Self tests are running.
	(green)	On — (after self tests end) System is running.
		Off — (after self tests end) System cannot run; repair is needed.
All system boards	Lower 8 LEDs	During POST, LEDs cycle on and off in irregular pattern.
Master system board only	Lower 8 LEDs	After POST, LEDs display cyclic pattern.
All slave system boards	Lower 8 LEDs	After POST, LEDs display solid pattern until boot is ended, then LEDs
		display same cycling pattern as master board. After boot ends, for boards
		without SPARC modules, LEDs continue to display solid pattern. After
		boot ends, LEDs on failed boards should be OFF.
Power supply adapter	Left LED	On — bottom power supply failed, or the circuit breaker (breaker box)
board (redundant-		tripped.
capable chassis only)	Right LED	Off — top power supply fail, or the circuit breaker (breaker box) tripped.

Power Supply Installation 2-25