55
Cooling Fans
The TDZ 2000 GX1 has three cooling fans. One is inside the power supply; the others are
mounted in the chassis. All fans are 12 VDC. The fans pressurize the chassis and force
warm air out from the vents. Hardware controls the dynamic speed of each two-wire fan.
See the System Board Manual for connector locations and fan cable pinouts. See also
Chapter 2, “Servicing the System,” for details on replacing the chassis fans.
The table below summarizes fan information.
Fan
Location
Size
Airflow
Devices Cooled
Chassis fan 1
Bottom front
120 mm
Into the chassis
Option cards
Chassis fan 2
Top rear
120 mm
Into the chassis
Processors, drives
Power supply
Power supply
80 mm
Out of the chassis
Power supply
The two chassis fans (CFAN172) are field replaceable.
The power supply fan is not field replaceable. If the fan requires replacement, you must
replace the power supply.
Arrows on each fan indicate airflow direction and rotation, as in the following illustration.
Airflow
Rotation
Side view of fan
Ensure that you install each chassis fan with the airflow direction arrow pointing toward the
inside of the chassis.
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