AP2500 Hardware Reference Guide
17
II. Components
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.
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)
SET2 SET3
SET4
Number of Fans
ON
ON
ON
1
ON
ON
OFF
2 (Default)
ON
OFF
ON
3
ON
OFF
OFF
4
OFF ON
ON
5
OFF ON
OFF
6
OFF OFF
ON
7
OFF OFF
OFF
8
The control boards mount with
the component side face down
Removing the front
fan module
The front fan module frame
