1-32
Cisco 8500 Series Wireless Controller Installation Guide
Chapter 1 Cisco 8500 Series Wireless Controller Installation Guide
Replacing a Hot-Swap AC Power Supply
Replacing a Hot-Swap AC Power Supply
The following section describes the type of AC power supply that the controller supports and other
information that you must consider when you replace a failed power supply:
• The Cisco 8500 Series Wireless Controller comes with two 675-watt hot-swap 12-volt output power
supplies that connect to power supply bays 1 and 2. The input voltage is 110 VAC or 220 VAC
auto-sensing.
• Power supply 1 is the default/primary power supply. If power supply 1 fails, you must replace the
power supply immediately.
• You can order replacement power supplies from Cisco. The replacement part PID is
AIR-SRVR-PWR=.
• These power supplies are designed for parallel operation. In the event of a power-supply failure, the
redundant power supply continues to power the system.
Caution The power control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
Caution Never remove the cover on a power supply or any part that has the following label attached. Hazardous
voltage, current, and energy levels are present inside any component that has this label attached. There
are no serviceable parts inside these components. If you suspect a problem with one of these parts,
contact a service technician.
To install a hot-swap power supply, complete the following steps.
Step 1 Read the safety information in General Warnings, Regulatory and Safety, page 1-4.
Step 2 Touch the static-protective package that contains the hot-swap power supply to any unpainted metal
surface on the controller; then, remove the power supply from the package and place it on a
static-protective surface.