SUPER MICRO Computer AS1011M-T2 System Fan Failure, Replacing System Fans, Removing a fan

Chapter 6: Advanced Chassis Setup

6-3 System Fans

Two 4-cm fans provide the cooling for the 1011M-T2. Each fan unit is actually made up of two fans joined back-to-back, which rotate in opposite directions. This counter- rotating action generates exceptional airfl ow and works to dampen vibration levels. These fans can adjust their speed according to the heat level sensed in the system, which results in more efficient and quieter fan operation. Fan speed is controlled by a setting in BIOS (see Chapter 7). Each fan in a set has its own separate tachometer. An air shroud is also included with the system to optimize airfl ow.

Note: It is very important that the chassis top cover is properly installed for the airfl ow to circulate properly through the chassis and cool the components.

System Fan Failure

If a fan fails, the remaining fans will ramp up to full speed and the overheat/fan fail LED on the control panel will blink on and off. Replace any failed fan at your earliest convenience with the same type and model (the system can continue to run with a failed fan). Remove the top chassis cover (refer to page 6-7) while the system is still running to determine which fan unit has failed, then power down the system to replace it. Removing the power cord(s) is also recommended as a safety precaution.

Replacing System Fans

1. Removing a fan

With the system powered down, fi rst unplug the failed fan cable from the mother- board. Grasp the failed fan unit and lift it out of the chassis.

2. Installing a new fan

Replace the failed fan with an identical 4-cm, 12 volt fan (p/n FAN-0087). At the bottom of each fan unit there are four small rubber pieces that help position the fan into place in the chassis. Remove these from the failed fan and attach them to the new fan (new fans do not include this piece). Then place the new fan in the housing with the fan wiring toward the motherboard. Reconnect the fan wiring to the same fan header you removed it from. Power up the system and check that the fan is working properly and that the LED on the control panel has turned off. Finish by replacing the chassis cover.

6-3