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SC113 Chassis Manual
Front Jumper Locations and Settings
M H5
C137
C4
M H6
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 identified 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.
Jumper
Open: Default
JP18
Closed: Reset
Open: Default
JP29
Closed: Reset
*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
+12V
GND
GND
M H3
1
J P13
BUZZER RST
1
Figure C-2: Front Jumpers
Jumper Settings
Jumper Settings
JP33
+5V
+12V
GND
GND
+5V
M H4
SB#2
J P52
I 2C#2
J P45
U18
Buzzer reset*
MG9072 chip reset
C-6
JP29
9072 RST
UPGRADE
J P46
1
2
M H2
SB#1
J P33: M ODE SEL
J P29
5
6
1- 2: SGPI O
2- 3: I 2C
48
33
49
J P33
64
REV 1.02
I 2C#1
3
2
Connector
Pins
Jumper
3
2
Setting
Note
M H1
1
1
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