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you to remove the PSU from the subsystem while the subsystem is online.
This should only be done if the PSU has failed and needs to be replaced.
A retention screw at the top of the PSU module secures the PSU to the
enclosure. To remove the PSU, the retention screw must be removed first.
When installing a new PSU module, make sure that the retention screw has
been firmly secured.
PSU specifications are shown in Appendix B.
1.2.8 Cooling Modules
PN: IFT-9273ECFanMod
The AR3016G is equipped with two (2) redundant, dual-fan cooling
modules. They are installed in the slots located in the PSU modules (see
Figure 1-12). Two (2) LEDs indicates the internal cooling fans status.
Intelligent Dual Speed Operation
The cooling fans in the cooling module operate with two rotation speeds.
Under normal operating conditions, the cooling fans run at the low speed,
which is sufficient for maintaining efficient airflow across components.
Under the following conditions, cooling fans raise their rotation speed to
increase the airflow:
1. Component Failure: if one cooling fan, a PSU, or a temperature
2. Elevated Temperature: if the temperature breaches the upper
AR3016G Components
Figure 1-12: Cooling Module
sensor fails, the remaining cooling fan(s) automatically raises its
rotation speed.
threshold set for any of the interior temperature sensors, the cooling
fans automatically raises its rotation speed.
AR3016G
1-11
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