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Cisco 8500 Series Wireless Controller Installation Guide
Chapter 1 Cisco 8500 Series Wireless Controller Installation Guide
Front Panel
• NMI button: This button is used to force a nonmaskable interrupt to the microprocessor. This button
is not currently used by the Cisco 8500 Series Wireless Controller. Press this button only when
directed by the Cisco TAC personnel.
• Checkpoint code display: This display provides a checkpoint code that indicates the point at which
the system stopped during the boot block and POST. A checkpoint code is either a byte or a word
value that is produced by UEFI. The display does not provide error codes or suggest components to
be replaced.
• Reset button: Press this button to reset the controller and run the power-on self-test (POST). You
might have to use a pen or the end of a straightened paper clip to press the button. The Reset button
is in the lower-right corner of the light path diagnostics panel.
Ta ble 1-1 Light path diagnostics panel LEDs
Follow the suggested actions in the order in which they are listed in the Action column until the
problem is solved.
LED Description Action
None, but the
system error LED is
lit.
An error occurred and cannot be
isolated. The error is not
represented by a path.
Contact Cisco TAC for assistance.
OVER SPEC The power supplies are using
more power than their maximum
rating.
Contact Cisco TAC for assistance.
LOG An error occurred. Check the IMM system event log and the
system-error log for information about the
error and then determine the next steps. If
needed, contact Cisco TAC.
LINK Reserved.
PS Power supply 1 or 2 has failed. 1. Check the power supply that has a lit
amber LED (see
Power-supply LEDs,
page 1-27).
2. Make sure that the power supplies are
seated correctly.
3. Remove one of the power supplies to
isolate the failed power supply.
4. Replace the failed power supply.
PCI An error has occurred on a PCI
bus or on the system board. An
additional LED is lit next to a
failing PCI slot.
Contact Cisco TAC for assistance.
SP A service processor error has
been detected.
1. Shut down the system and remove the
power cords from the controller; then,
reconnect the controller to power and
restart it.
2. If the problem does not go away, contact
Cisco TAC for assistance.