Figure 19: Air Out Airflow Through 2 U ACX5096 Chassis
Fan Module Status
You can check the status of fan modules through the show system alarms command or
by looking at the LEDs next to each fan module.
Each router has a Status LED (labeled ST) for each fan module on the left side of the
corresponding fan module slot. It indicates the status of all the fan modules.
Table 17 on page 36 describes the Status LED on the fan module in an ACX5000 router.
Table 17: Fan Module LED
DescriptionLED State
The individual fan module is present. After the hardware senses the fan module, software ensures
the airflow is consistent with the other fan modules and that it is functioning correctly.
Solid Green
Indicates one of the following:
•
The fan module is not present.
•
The fan module is not functioning normally.
Blinking Amber
Under normal operating conditions, the fan modules operate at a moderate speed.
Temperature sensors in the chassis monitor the temperature within the chassis.
The system raises an alarm if a fan module fails or if the ambient temperature inside the
chassis rises above the acceptable range. If the temperature inside the chassis rises
above the threshold temperature, the system shuts down automatically.
Related
Documentation
• Field-Replaceable Units in an ACX5000 Router on page 5
• Preventing Electrostatic Discharge Damage to an ACX5000 Router on page 199
• Installing a Fan Module in an ACX5000 Router on page 133
• Removing a Fan Module from an ACX5000 Router on page 134
Copyright © 2015, Juniper Networks, Inc.36
ACX5048 and ACX5096 Universal Access Router
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