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Appendix A Replacing and Upgrading FRUs
A.3 Replacing a Cooling Fan Module
The cooling fan modules on the DSN-4000 series are hot-swappable and can be replaced
while the system is running, without shutting down the system or removing the enclosure
from the rack.
To remove a cooling fan module:
1.
Verify that the Fan Status LED is red to identify which cooling fan module has failed.
2.
Loosen the two thumbscrews for the cooling fan module, as shown in Figure A-2.
3.
Remove the cooling fan module from the Controller module.
Figure A-2. Removing a Cooling Fan Module
To install a replacement cooling fan module:
1.
Align the tabs on the side of the cooling fan module with the slots in the controller
module rear panel, to ensure that the fan is installed in the correct orientation.
2.
Slide the cooling fan module into the opening in the Controller module until it is fully
seated.
3.
Tighten both of the thumbscrews.
4.
Verify that the Fan Status LED is green.
Thumbscrew
Thumbscrew
Thumbscrew
Thumbscrew
Cooling Fan
Module with
Fans 0 and 1
Cooling Fan
Module with
Fans 2 and 3
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