OCPRF100 MP Server System Technical Product Specification
Revision 1.0
Fans are installed with the connector on the left side facing down. The cavities in the fan bay are keyed to prevent a fan from being installed backwards.
The fan bay is installed after the Profusion carrier assembly is installed and completely seated into the midplane. The fan bay is lowered into the chassis until it is seated on the flanges of the Profusion tray. Two screw holes, one on each side, should now be aligned on the sides of the chassis. Insert screws into these holes to secure the fan bay into the chassis.
The fan bay cover is hinged at the rear and captivated by the system top cover assembly. Tabs in the rear of the fan bay cover engage with slots on the rear of the fan bay to secure the cover in normal operation. The fan bay cover is secured by one noncaptive screw located on the center of the cover’s front flange. Remove the screw, slide the cover forward and lift. The cover remains open while servicing the fans.
To remove the fan bay from the chassis, it is first necessary to remove all individual fans from the fan bay. The fans plug directly into the front panel board and must be removed before the fan bay can be lifted out.
The fan bay cover provides critical electromagnetic interference (EMI) containment. To avoid electrical interference with adjacent equipment, close and secure the fan bay cover during normal system operation.
In systems with only one processor mezzanine board, an air baffle needs to be installed on the vacant side of the CPU retention cage to ensure proper cooling for the installed processors.
2.5Front Panel Board
The FPC board provides power and monitors the tachometer readings from each individual fan within the fan bay. The FPC also serves as a platform for the server controller switches, and supports circuitry required for server management.
The FPC board is located on the same plane as, and connects to the Profusion carrier board via a connector. Both the FPC and Profusion carrier board are mounted to the topside of the Profusion carrier tray. On the left front edge of the FPC board are three push button switches— power, reset, and NMI. Each switch plunger has a small black cap on its end, which is necessary for the proper operation of the buttons on the front bezel.
To install an FPC board, tilt the board forward as shown in Figure
8