3-8 Sun Fire X4150 Server Service Manual • November 2009
■ If you have cold-plugged the drive:
Restore power to the server. Do the procedure described in Section 6.4,
“Powering On the Server” on page 6-6.
3.2.6 Using Drive Fillers
All drive slots in the Sun Fire X4150 Server must have drive fillers in place during
operation to maintain airflow. To remove fillers, pull the ejector and pull the filler out
of the chassis.
3.3 Servicing Fan Modules
The following topics are covered:
■ Section 3.3.1, “About Sun Fire X4150 Server Fans” on page 3-8
■ Section 3.3.2, “Fan Module LED Reference” on page 3-9
■ Section 3.3.3, “Detecting Fan Module Failure” on page 3-10
■ Section 3.3.4, “Removing a Fan Module” on page 3-11
■ Section 3.3.5, “Installing a Fan Module” on page 3-12
Note – This is a customer-replaceable unit.
3.3.1 About Sun Fire X4150 Server Fans
Seven pairs of fan modules are located under the top cover door, providing N+1
cooling redundancy. Each fan module contains two fans mounted in an integrated,
hot-swappable CRU.
If a fan module fails, replace the fan as soon as possible to maintain server
availability.
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