User`s manual

C-6
SC825 Chassis Manual
1
1
16
32
48
BAR CODE
REV 2.0
SAS825TQ
1
GNDGND+12V +5VGNDGND+12V +5V
#2
I C
#1
ACT_IN
JP29:9072 RESET
I C
SIDEBAND #2
SIDEBAND #1
2
2
+
+
+
+
+
+
+
+
+
+
+
+
+
+
1
1
1
16
32
48
GNDGND+12V +5VGNDGND+12V +5V
+
+
+
BAR CODE
+
+
+
REV 2.0
SAS825TQ
#2
2
I C
#1
ACT_IN
JP29:9072 RESET
2
I C
SIDEBAND #2
SIDEBAND #1
+
+
+
+
+
+
+
+
C-7 FrontJumperLocationsandPinDenitions
Explanation of Jumpers
To modify the operation of the backplane,
jumpers can be used to choose between
optional settings. Jumpers create shorts
between two pins to change the function
of the connector. Pin 1 is identied with
a square solder pad on the printed circuit
board. Note: On two pin jumpers, "Closed"
means the jumper is on and "Open" means
the jumper is off the pins.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
Jumper Settings
Jumper Jumper Settings Note
JP29
Open (Jumper off the pins): Default
Closed (Jumper on the pins): Reset
MG9072 chip reset
JP18
Open (Jumper off the pins): Default
Closed (Jumper on the pins): Reset
Buzzer reset*
Figure C-3: Front Jumpers
*The buzzer sound indicates that a condition requiring immediate attention has
occurred.
The buzzer alarm is triggered by the following conditions:
1. Hard drive failure
2. System temperature over 45º Celsius.
JP18
JP29
JP50
JP37
JP38
JP34
JP36
JP43
JP33
JP42
JP41
JP40
Closed, jumper on
Open, jumper off
the pins.
the pins.