User`s manual

Chapter 6: Advanced Chassis Setup

6-3

The control panel LEDs inform you of system status. See "Chapter 3: System In-

terface" for details on the LEDs and the control panel buttons. Details on JF1 can

be found in "Chapter 5: Advanced Serverboard Installation."

6-3 System Cooling

Six heavy-duty fans provide cooling for the chassis. Four fans are located in the

mid-section of the chassis with two fans in the rear. These fans circulate air through

the chassis as a means of lowering the chassis internal temperature.

The fans come pre-installed to the chassis. Each fan is hot-swappable and can be

replaced without removing any connections.

System Fan Failure

Fan speed is controlled by system temperature via a BIOS setting. If a fan fails,

the remaining fans will ramp up to full speed. Replace any failed fan at your earli-

est convenience with the same type and model (the system can continue to run

with a failed fan).

Replacing System Fans

The SC747 chassis contains two types of system fans: mid-system fans and rear

system fans.

Replacing Mid-System Fans

Determine which fan has failed. Because the fans are hot-swappable, the 1.

chassis does not need to be powered-down.

Press the fan release tab and lift the failed fan from the chassis. Mid fans 2.

must be pulled straight out of the chassis (see Figure 6-3).

Place the new fan into the vacant space in the housing while making sure 3.

the arrows on the top of the fan (indicating air direction) point in the same

direction as the arrows on the other fans. As soon as the fan is connected, it

will begin working.

Replacing the Rear System Fan

Determine which fan is not operation1.

Press the rear fan release tab (see Figure 6-4).2.

Pull the fan away from the chassis by pulling out the top ﬁ rst.3.