Acer Altos G901 - Manual (Page 101)

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Cooling system fans
The Altos G900 server accommodates six hot-swap fan modules.
Caution! Don't remove a fan module while the server is powered
on unless you have a replacement unit available. Once you
remove a fan module from the system, replace it within five
minutes. Vacant spaces alter airflow patterns in the server system
and can cause overheating and damage to system components.
Checking a fan status indicator
Fault LED indicators for each fan module are located on the fan board.
The indicators are visible through a cutout in the housing of each
module.
The red LEDs light to indicate a fan failure; during normal operation,
the LEDs remain unlit. A fan failure is also indicated by the general
system fault LED located on the front panel.
Label Description Label Description
A Fan board B Fan status LED indicators
Figure 44 - Fan status indicators
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