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SC827 Chassis Manual |
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| JP30 |
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| JP69 |
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| + | FAN4 |
| FAN3 |
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| SPI |
| FAN2 |
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Buzzer |
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| BAR CODE |
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| + | FAN1 | ||
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| SAS827B |
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| REV 1.01 |
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| DESIGNED IN USA |
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| BUZZER RESET |
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| JP36JP35 |
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| JP18 | + |
| DEBUG | TO PS | + | |||
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| J21 |
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Figure D-3: Front Jumpers
Explanation of Jumpers | 3 | 2 | 1 | |
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| Connector |
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To modify the operation of the backplane, | Pins |
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jumpers can be used to choose between |
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optional settings. Jumpers create shorts |
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between two pins to change the function | Jumper |
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of the connector. Pin 1 is identified with |
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a square solder pad on the printed circuit | 3 | 2 | 1 | |
board. Note: On two pin jumpers, "Closed" | ||||
Setting |
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means the jumper is on and "Open" means |
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the jumper is off the pins.
Jumper Settings
Jumper
JP18
JP30
JP35
JP36
JP69
Jumper Settings
Open: Buzzer disabled
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.