II. System Components

Rear Cooling Fan Control Board Settings

The rear fan control board has DIP switches to allow controlling the number of fans and the control board.

DIP Switch SET1

Fan control setting

ON (momentarily)

Reset Control Board

 

 

OFF

Normal (Default)

 

 

 

 

 

 

 

Components

SET2

SET3

SET4

Number of Fans

 

 

 

ON

ON

ON

1

 

 

 

 

 

 

 

 

ON

ON

OFF

2 (Default)

 

 

 

 

 

 

 

 

ON

OFF

ON

3

 

II.

 

 

 

 

 

ON

OFF

OFF

4

 

 

 

 

 

 

 

 

 

OFF

ON

ON

5

 

 

 

 

 

 

 

 

 

OFF

ON

OFF

6

 

 

 

 

 

 

 

 

OFF

OFF

ON

7

 

 

 

 

 

 

 

 

OFF

OFF

OFF

8

 

 

 

 

 

 

 

 

Front Cooling Fans

The hard disk drive fan module can be removed by using a small screw driver to push the eject lever in the fan module. The eject lever is behind a small hole as circled below. There are two individual 2 1/4 inch (6cm) fans secured by four screws on each fan. The ASMA software will report an error message when any of these two fans malfunction.

 

 

Removing the front

The control boards mount with The front fan module frame

fan module

the component side face down

AP2500 Hardware Reference Guide

17