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a. Identify the failing fan by pressing the fan identify button (A) shown in Figure 15 on page 15. An
amber left or right fan-fault LED (C) on solid, as shown in Figure 16, indicates the faulty fan.
b. Loosen the thumbscrew (A) that holds the fan in the power-supply assembly, as shown in
Figure 16.
c. Use the recessed fan handle (B) to pull the fan out of the power-supply assembly, as shown in
Figure 16.
If you removed the power supply or fan as part of another service action, or if you want to replace the
power supply or fan that you removed from the expansion unit, see “Replacing a power supply or fan in
a 5802 or 5877 expansion unit with power turned off” on page 21.
Related information
Before you begin
Identifying a failing part
Stopping the system or logical partition
Replacing a power supply or fan in a 5802 or 5877 expansion unit with
the power turned on
Learn how to replace a power supply or power-supply fan in a 5802 or 5877 expansion unit if you
removed a failing part and want to replace the power-supply assembly with the power turned on.
If your system is managed by the Hardware Management Console (HMC), use the HMC to replace a
power supply. For instructions, see Exchanging a part by using the Hardware Management Console.
Figure 16. Removing a power supply fan
16 Power Systems: Power supplies for the 9117-MMB or 9179-MHB