User's Manual (1.0d)

B-6
SC113 Chassis Manual
B-7 Front Jumpers and LED Indicators
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
JP18
Open: Enabled
Closed: Disabled
Buzzer Reset*
JP29
Open: Default
Closed: Reset
MG9072 Chip Reset
C98
C6
C5
C4
C285
C137
JP29
R259
JP33
JP45
JP44
JP46
U18
JP10
JP13
JP51
JP52
J16
J14
J5
J7
J6
J12
J8
J10
MH6
MH5
MH3 MH4 MH2
MH1
64
49
48
33
+
+
+
+
+
1
+
1
2
5 6
1
REV 1.02
GND
+5VGND+12V
+5V
GND
GND+12V
#7
#6
#5
#4
#3 #2
#1
#0
BUZZER RST
I2C#1
SB#2
I2C#2
SB#1
2-3:I2C
1-2:SGPIO
JP33:MODE SEL
9072 RST
UPGRADE
*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. Fan failure
3. System temperature over 45º Celsius.
Figure C-2: Front Jumpers
JP18
JP29