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Cisco 8500 Series Wireless Controller Installation Guide
Chapter 1 Cisco 8500 Series Wireless Controller Installation Guide
Rear Panel
Cisco 8500 Series Wireless Controller Power Features
Specific steps to power-on the Cisco 8500 Series Wireless Controller are provided in Powering On the
Controller, page 1-41.
When the controller is connected to an AC power source, or a DC power for source for the
AIR-CT85DC-K9, but is not turned on, the operating system does not run, and all core logic except for
the service processor (the Integrated Management Module) is shut down; however, the controller can
respond to requests to the service processor, such as a remote request to turn on the controller. The
power-on LED flashes to indicate that the controller is connected to power but is not turned on.
Off Off On No DC power to the
controller or a
problem with the
DC power source,
and the power
supply had detected
an internal
problem.
1. Make sure that the power
cord is connected to a
functioning power source.
2. Replace the power supply.
(see the documentation that
comes with the power supply
instructions).
Off On Off Faulty power
supply
Replace the power supply.
Off On On Faulty power
supply
Replace the power supply.
On Off Off Power supply not
fully seated, faulty
system board, or
faulty power supply
1. (Trained service technician
only) Reseat the power
supply.
2. If a power channel error LED
on the system board is not lit,
replace the power supply
(see the documentation that
comes with the power supply
for instructions).
3. If a power channel error LED
on the system board is lit,
(trained service technician
only) replace the system
board.
Typically indicates
a power supply is
not fully seated.
On Off On Faulty power
supply
Replace the power supply.
On On On Power supply is
faulty but still
operational
Replace the power supply.
Table 1-3 Cisco 8500 Series Wireless Controller DC Power Supply Troubleshooting (AIR-CT85DC-K9) (continued)
DC power-supply LEDs
Description Action NotesIN OK OUT OK Error (!)