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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