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S
S
UPER
ERVER 7043M-8/7043M-6 Manual
6-3
System Fans
Two 9-cm chassis cooling fans located between the motherboard and the
drive bays provide cool air intake for the system.
exhaust fan at the rear of the chassis pulls the cooling air through the
system and expels the hot air. The power supply has two fans; a primary
and a secondary.
Fan Failure
Under normal operation, both chassis fans, the exhaust fan and the primary
power supply fan run continuously.
the power fail LED on the control panel will illuminate, an alarm will sound
and the secondary power supply fan will activate. The reset button on the
back of the power supply will disable this alarm. The system can operate
with only one power supply fan, but you should replace the power supply
as soon as possible. Both chassis cooling fans (not the exhaust fan) are
hot-swappable and can be replaced without powering down the system.
Replacing System Fans
1.
Identifying the failed fan:
Inspect the back of the chassis to see if the 12-cm exhaust fan has
failed. You must power down the system to replace this fan. To replace
a failed chassis cooling fan, you must first remove the top/left chassis
cover.
Remove the two screws from the back lip of the top/left cover.
Push in the release tab on the cover and push the cover toward the rear
of the chassis until it stops (after moving about ½ inch). Then lift the
cover up and off the chassis and see which fan has failed.
2.
Removing a hot-plug fan housing:
Depress the locking tab on a chassis cooling fan and pull the unit straight
out by the handle. The fan wiring for these two fans has been designed
to detach automatically. The 12-cm exhaust fan is also in a housing that
can be removed from the chassis (not hot-swappable - see Figure 6-3).
3.
Installing a new system fan:
Replace the failed fan with an identical one (available from Supermicro).
After the new fan has been installed in the original fan housing, reas-
semble the fan housing and plug the housing back into its slot. You
should hear it click into place when fully inserted. Check that the fan is
working properly. Finish by replacing the top/left side chassis panel.
If the primary power supply fan fails,
6-4
A heavy duty 12-cm
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