
SC733 Chassis Manual
D-2
1
2
3
4
No. Jumper Description Setting
1 JP18 Buzzer Reset* Alarm Reset Header
2 JP25 Overheat Temperature Open: 45ºC
Pins 1-2: 50º C (Default)
Pins 2-3: 55º C
3 JP26 SATA Drive Activity Drive Activity
4 JP28 Fan Sense Pins 1-2: Enable
Pins 2-3: Diable (Default)
Figure D-1: SATA-733 Backplane
*The buzzer sound indicates that a condition requiring immediate attention has
occurred.
The buzzer alarm is triggered by the following conditions:
Hard drive failure1.
Fan failure2.
System temperature over 45º Celsius.3.
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