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S
S
UPER
ERVER 1025C-3 User's Manual
Power Supply Fail Detect
Connect a cable from your power sup-
ply to JPWF1 to provide warning of
power supply failure. This warning sig-
nal is passed through the PWR_LED
pin to indicate of a power failure on the
chassis. See the table on the right for
pin defi nitions.
Alarm Reset
If redundant power supplies are
installed, the system will notify you
when a power module fails. Connect
JAR to a micro-switch to enable you to
turn off the power fail alarm. See the
table on the right for pin defi nitions.
2
PWR I
C
This connector is for I
be used to monitor the status of the
power supply, fan and system tem-
perature. See the table on the right for
pin defi nitions.
2
BPI
C
This connector provides backpanel
2
access for I
C, which may be used to
monitor the status of the power supply,
fan and system temperature. See the
table on the right for pin defi nitions.
2
C, which may
5-16
PWR Supply Fail Detect
Pin Defi nitions (JPWF1)
Pin#
Defi nition
1
PWR 1: Fail
2
PWR 2: Fail
3
PWR 3: Fail
4
Signal: Alarm Reset
Note: This feature is only available when us-
ing Supermicro redundant power supplies.
Alarm Reset Pin Defi nitions
(JAR)
Pin Setting
Defi nition
Pin 1
Ground
Pin 2
+5V
2
PWR I
C
Pin Defi nitions
Pin#
Defi nition
1
Clock
2
Data
3
Power Fail
4
Ground
5
+3.3V
2
BPI
C
Pin Defi nitions
Pin#
Defi nition
1
Clock
2
Data
3
Power Fail
4
Ground
5
+3.3V
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