User`s manual
SC747 Chassis Manual
D-9
D-11 SATA-M35S Front Jumpers and Pin Denitions
JP28
JP18
JP25
Figure D-2: SATA-M35S Front Jumpers
Jumper Settings
Jumper Jumper Settings Note
JP18
Open (jumper off): Buzzer enabled
Closed (jumper on): Buzzer disabled
Buzzer reset*
JP28
1-2: Fan enabled
2-3: Fan disabled
Fan jumper
JP25
Open (jumper off): 45ºC
1-2: 50ºC
2-3: 55ºC
Overheat temperature set-
tings. Buzzer activated at
the temperature indicated.
*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, 50º or 55º Celsius.