E-4
SPARC Enterprise M3000 Server Service Manual • January 2009
On: Indicates that the contact is closed.
Off: Indicates that the contact is open.
Note 1: Use a UPS that can normally supply power from the battery at least 10 to 60 seconds after *BTL is turned on.
Note 2: Use a UPS that can normally supply power from the battery within 2 seconds of a momentary commercial power interruption
even if *ACOFF is not turned on.
*ACOFF
Indicates that a power failure has occurred in the
commercial power supply connected to the UPS.
9
Normal state: Off
Abnormal state: On
(Note 2)
SG
Signal ground
5
ER
(Equipment Ready)
Indicates that the server is operating
1
Do not connect
anything to this pin.
TABLE E-1
Signal Line Definitions
(Continued)
Signal name
Definitions
Pin number
Remarks
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