Dell PowerEdge 2450 Installation And Troubleshooting Manual page 61

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Three cooling fans are installed in the PowerEdge 2450 system chassis. (Fan 1 is the
outermost fan in the fan assembly.) If you observe that one of the cooling fans is not
operating or if the Dell Hardware Instrumentation Package (HIP) server-management
application issues a fan-related error message, perform the following steps to trouble-
shoot the problem:
1. Turn off the system, including any attached peripherals, and disconnect the sys-
tem from its electrical outlet.
2. Open the computer doors.
See "Opening the Computer Doors" found earlier in this chapter.
3. Unplug the fan power wiring harness from the interposer board by pressing the
release tab on the power cable connector.
4. Remove the retention pin from the chassis and lift the fan assembly out of the
system (see Figure 7-6).
cooling fan assembly
retention pin
fan assembly power connector
on interposer board

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5. To replace an individual fan, perform the following steps:
a. Separate the two halves of the fan assembly by pressing the locking tabs at
each end of the assembly.
b. Remove the faulty fan and disconnect it from the fan power wiring harness.
Checking Inside the Computer 7-11