You will need to replace the rear fan cage if one of the three fan boards fail. The rear fan cage holds all of the rear fans in the Sun Blade 8000 Series Chassis. The fan module board, which is part of the rear fan cage, enables you to connect the rear fans to the midplane using three module board connectors. This connection to the midplane, in turn, supplies power to the fans from the power supplies' connection to the midplane.
To safely remove the rear fan cage from the chassis, you must first power off the system and remove the rear fans.
The rear fan cage is a field-replaceable unit (FRU); only authorized Sun service providers should remove or install the rear fan cage.
Power off the system.
Remove all of the rear fans.
See the fan removal steps in Replace Rear Fan Module.
Locate and disconnect all three of the rear fan cable connectors from the fan module board.
Using a Phillips No. 2 screwdriver, unscrew each of the six screws that attach the rear fan cage to the system chassis.
There are two screws at the far left and far right of the fan cage and two screws at the bottom of the fan cage.
The following illustration shows the rear fan cage in a Sun Blade 8000 Chassis. The rear fan cage in the Sun Blade 8000 P Chassis is in a similar location, below the four inlets on the AC interface module.
Grab the two vertical struts and pull the rear fan cage out of the chassis.
Installation is the reverse of this procedure. To power on the system, see Power On System After Service.