Shuttle FS56 User Manual page 76

But when the actual CPU temp goes above the pre-selected 72
perature threshold, then CPU fan speed will automatically engage into
normal mode (2nd phase) of about 2500 RPM. Automatically by the
Smart Bios feature, this increase of fan rotation speed will effectively cool
down the CPU temperature. And when the CPU temperature drops back
below the 72
matically shift back to the quiet mode (1st phase) of about 2000 RPM in
order to reduce fan noise level.
Fail-safe mode (4rd phase) Variable Fan Speed and CPU temperature
Control is as predefined at user setting offset 10
of system and CPU operating under extreme working conditions, and if
CPU temperature is raised above 82
the CPU fan in Fail-safe mode to rotate at about 3500 RPM. Please note
that the higher fan speed, the fan cooler will be become slightly noiseier
in order to compensate for the increase in CPU temperature.
Warning : It is Strongly recommended to disable CPU Fan Auto
CPU Voltage
AGP Voltage
+3.3V
+5V
+12V
-12V
ChipSet Voltage
+5VSB
Voltage Battery
System Temperature
CPU Temperature
PWM Temperature
Fan1 Speed
Fan2 Speed
Fan3 Speed
C temperature threshold, CPU fan speed will again auto-
0
Guardian feature, if you wish to use other fan cooler,
allowing the fan to run at its default speed.
- 72 -
C. Where in the event
0
C then the Smart Bios will engage
0
C tem-
0