SUPER MICRO Computer sc827 user manual To modify the operation of the backplane

SC827 Chassis Manual

D-6 Front Jumpers and Pin Definitions

JP30

JP69

+

FAN4

FAN3

SPI

FAN2

Buzzer

BAR CODE

MB-D

+

FAN1

SAS827B

MB-B

REV 1.01

DESIGNED IN USA

+

+

+

+

+

+

BUZZER RESET

JP36JP35

+

JP18

+

DEBUG

TO PS

+

MB-A

J21

JF5-AB

+

JF6-CD

+

MB-C

Figure D-3: Front Jumpers

Explanation of Jumpers	3	2	1
	Connector
To modify the operation of the backplane,	Pins
jumpers can be used to choose between
optional settings. Jumpers create shorts
between two pins to change the function	Jumper
of the connector. Pin 1 is identified with
a square solder pad on the printed circuit	3	2	1
board. Note: On two pin jumpers, "Closed"
	Setting
means the jumper is on and "Open" means

the jumper is off the pins.

Jumper Settings

Jumper

JP18

JP30

JP35

JP36

JP69

Jumper Settings

Open: Buzzer disabled

1-2: Buzzer enabled (Default)

2-3: Test setting Overheat Settings Open: 45º Celsius

1-2: 50º Celcius (Default)

2-3: 55º Celcius

Open: Default

Closed: LED test

Open: Default , multiple power button functionality

Closed: Single power button functionality

Notes

*Buzzer reset

Backplane overheat settings

LED testing

Any power button

FW upgrade connector

*The buzzer sound indicates that a condition requiring immediate attention has occurred.

The backplane buzzer alarm is triggered by the following condition:

1.Backplane temperature over 45º, 50º or 55º Celsius, depending upon the overheat setting selected. See the table above for details.

D-6