In this section:
The Fan Assembly, a Customer Replaceable Unit (CRU), is located on the left side of the chassis and contains three fans, as shown in the figure Fan Assembly. The Fan Assembly product code is SBC-5XXX-FANASSEMBLY.
Fan Assembly
The Fan Assemblies are hot-swappable meaning that a Fan Assembly may be replaced without powering down the SBC 5000 series platform (provided that the fan is replaced within five minutes of removing the original Fan Assembly).
Perform the following steps to replace the Fan Assembly:
Loosen the captive fastener on the Fan Assembly to be removed. Captive screws are spring-loaded and remain in the Fan Assembly face plate as shown in the figure.
Removing the fan assembly
Grab hold of the captive fastener housing and pull it to disengage the Fan Assembly from the chassis.
When a Fan Assembly is nonfunctional or removed, the speed of the two remaining Fan Assemblies increases to compensate for the missing fan.
Install the replacement Fan Assembly into the chassis.
Tighten the captive fastener to 10 inch/lbs using the torque driver.
Verify that the Fan Status LED is green.
Fan status LEDs
Remove the ESD wrist strap from the chassis.
Reinstall the front panel Bezel.
From the application, verify that the Fan Failure alarms are not generated.
Verify that the fan failure LED on the front panel is OFF.
All SBC 5000 series CRUs are shipped in electrostatic discharge bags and should be handled using appropriate ESD precautions.
The storage environment for these CRUs are:
The ESD Susceptibility symbol
warns of the presence of Sonus devices susceptible to electrostatic discharge. Do not handle equipment without wearing a properly grounded ESD wrist strap.