Chassis Cooling Fans - Intergraph RAX Systems System Reference Manual

48
J18 Connector Pinout
Pin Signal
1 +3.3V
2 +3.3V
3 Ground
4 +5.0V
5 Ground
6 +5.0V
7 Ground
J19 Connector Pinout
Pin Signal
1 +3.3V
2 +3.3V
3 Ground
4 Ground
5 +5.0V
6 +5.0V
7 Ground
8 +5V.0

Chassis Cooling Fans

The system has two 12 V DC cooling fans. One fan is mounted in the chassis; the other is
located inside the power supply. The fans pressurize the chassis and force warm air out from
the vents. The table below summarizes fan information.
Fan
Chassis
fan
Power
supply fan
The chassis fan is field replaceable. See Chapter 2, "Servicing the System," for details on
replacing the chassis fan. Ensure that you install the fan with the airflow direction arrow
Pin
8
9
10
11
12
13
14
Pin
9
10
11
12
13
14
15
Size Location
92 mm Behind
peripheral
device bay
92 mm Power supply
Signal Pin
Power Good 15
5.0V Stdby 16
+12.0V 17
+3.3V 18
-12.0V 19
Ground 20
Remote On
Signal Pin
Ground 16
Reserved 17
+5.0V 18
+3.3V 19
Ground 20
Ground 21
Ground 22
Airflow Devices Cooled
Back-to-front Processors, disk
drives
Back-to-bottom Processors,
Power supply
Signal
Ground
Ground
Ground
-5.0V
+5.0V
+5.0V
Signal
+5.0V
Ground
+5.0V
Ground
+5.0V
Ground
+5.0V
Connector
P4, Power
supply
n/a (internal)