C-6
SC811 Chassis Manual
JP18
JP40
JP50
JP33
JP34
JP42
JP29
C-7 Front Jumper Locations and Pin Definitions
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.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
Jumper Settings
Jumper
Jumper Settings
Note
JP18
Open: Default
Closed: Reset
Normal
Buzzer reset*
JP29
Open: Default
Closed: Reset
Normal
MG9071 chip reset
Figure C-2: 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. Fan failure
3. System temperature over 45º Celcius.
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Страница 81: ...D 9 Appendix D Backplane Notes...