Detecting Fan Module Failure; Removing A Fan Module - Sun Microsystems Sun Fire X4450 Service Manual

3.3.3

Detecting Fan Module Failure

The following LEDs are lit when a fan module fault is detected:
Front and rear Service Required LEDs
■
Top Fan LED on the front of the server
■
Fan Fault LED on or adjacent to the faulty fan module
■
If an overtemperature conditions occurs, the front panel CPU overtemperature LED
becomes lit, a message is displayed on the console and logged by ILOM or ELOM.
The system Overtemp LED might be lit if a fan fault causes an increase in system
operating temperature. See
Features" on page 1-6
Detecting a Faulty Fan Module
FIGURE 3-7
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
Chapter
for more information about system status LEDs.
Section 2.5, "Extending the Server to the Maintenance Position" on page
1, Section 1.3, "Sun Fire X4450 Server Front Panel
Chapter 3 Servicing Customer-Replaceable Devices
2-5.
3-11