Chapter 3 Servicing Customer Replaceable Devices 3-11
The system Overtemp LED might be lit if a fan fault causes an increase in system
operating temperature. See Section 1.3, “Sun Fire X4150 Server Front Panel Features”
on page 1-6 for more information about identifying and interpreting system LEDs.
3.3.4 Removing a Fan Module
Caution – Hazardous moving parts. Unless the power to the server is completely
shut down, the only service permitted in the fan compartment is the replacement of
the fan modules by trained personnel.
1. Extend the server into the maintenance position.
See Section 2.5, “Extending the Server to the Maintenance Position” on page 2-5.
2. Unlatch the fan module door.
Pull the release tabs back to release the door. Open the top cover toward the rear
of the server.
Note – Close the top cover door after about 60 seconds to maintain airflow in the
server. Leaving the door open for more than 60 seconds while the server is running
might cause the server to overheat and shut down.
3. Identify the faulty fan module with a corresponding Service Required LED.
The Fan Fault LEDs are located on the fan board.
4. Using thumb and forefinger in between the two fans, pull the fan module up
and out of the connector (FIGURE 3-6).
Caution – When changing the fan modules, note that only the fan modules can be
removed or replaced. Do not service any other components in the fan compartment
unless the system is shut down and the power cords are removed.
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