Asus AP2500 Hardware Reference Manual - Page 17

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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
SET2 SET3
ON
ON
ON
ON
OFF ON
OFF ON
OFF OFF
OFF OFF

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
fan module
the component side face down
AP2500 Hardware Reference Guide
Normal (Default)
SET4
Number of Fans
ON
ON
1
ON
OFF
2 (Default)
OFF
ON
3
OFF
OFF
4
ON
5
OFF
6
ON
7
OFF
8
The front fan module frame
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