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S
UPER
S
ERVER 1027R-73DARF User's Manual
T-SGPIO Headers
The SGPIO (Serial General Purpose
Input/Output) headers are used to
communicate with the enclosure
management chip on the backplane.
See the table on the right for pin
definitions.
T-SGPIO Header
Pin Definitions
Pin# Definition
Pin Definition
1
NC
2
NC
3
Ground
4
DATA Out
5
Load
6
Ground
7
Clock
8
NC
Internal Buzzer (SP1)
Pin Definition
Pin# Definitions
Pin 1
Pos. (+)
Beep In
Pin 2
Neg. (-)
Alarm
Speaker
Power LED/Speaker
On the JD1 header, pins 1-3 are for
a power LED and pins 4-7 are for the
speaker. Close pins 4-7 with a jumper
to use an external speaker. If you wish
to use the onboard speaker, please
close pins 6-7. See the table on the
right for speaker pin definitions.
Speaker Connector
Pin Settings
Pin Setting Definition
Pins 4-7
External Speaker
Pins 6-7
Internal Speaker
Internal Speaker
The internal speaker, located at SP1,
can be used to provide audible indica-
tions for various beep codes. See the
table on the right for pin definitions..
PWR LED Connector
Pin Definitions
Pin Setting Definition
Pin 1
Anode (+)
Pin2
Cathode (-)
Pin3
NA
Overheat/Fan Fail LED
The JOH1 header is used to connect
an LED indicator to provide warnings
of chassis overheating and fan failure.
This LED will blink when a fan failure
occurs. Refer to the table on the right
for pin definitions.
OH/Fan Fail LED
Status
State Message
Solid
Overheat
Blinking
Fan Fail
Overheat LED
Pin Definitions
Pin# Definition
1
VDC
2
OH Active
Summary of Contents for 1027R-73DARF
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Page 5: ...Notes Preface v ...
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