II. System Components

Rear Cooling Fan Control Board

The rear fans are controlled and monitored by a control board. The fan control board requires power input from the power supply which allows the individual fans to obtain their power when connected to the control board. The control board also sends fan status information to the LEDs located on the front of the server and to the ASMA software. The fan control board’s cable connections are shown below.

Components .II

Fan control board with cable connections

Rear Cooling Fan Control Board Layout

The rear fan control board, although small, has many functions as shown.

 

 

 

 

 

 

 

Fan power connector

 

 

 

 

 

 

 

(Reserved Connector)

 

 

 

 

 

Power input connector

 

 

 

 

Fan status signal connector

 

 

 

Fan control settings

 

 

 

16

AP2500 Hardware Reference Guide