Cisco UBR10012 Quick Start Manual page 68

Troubleshooting
Table 13
Symptom
Fans do not function at startup.
Fan alarm LEDs illuminate.
This applies to both
Note
UBR10-FAN-ASSY= and
UBR10012-FAN-PLUS=
modules.
PRODUCT ID LED/switch on fan
assembly module
(UBR10012-FAN-PLUS=) is green and a
FAN-MISSING alarm is randomly being
triggered.
Cisco uBR10012 Series Universal Broadband Router–Quick Start Guide
68
Troubleshooting Tips (continued)
Action
Verify that the system has power.
1.
Remove the fan assembly module, check the fan cables, and reinsert the
2.
module.
Caution The total service window for removal and replacement of the fan tray
is 3 minutes before possible system shutdown. Therefore, ensure that
you complete the replacement procedure within this time limit to avoid
system shutdown.
If the Single Fan Failure LED is illuminated, one fan has failed, but the
•
system is still able to adequately cool the chassis. The fan assembly module
must be repaired or replaced as soon as possible.
• If the Multiple Fan Failure LED is illuminated, more than one fan has failed,
and the fan assembly module is no longer able to adequately cool the
Cisco uBR10012 chassis. Replace the fan assembly module immediately.
The total service window for removal and replacement of the fan
Caution
module is 3 minutes before possible system shutdown. Ensure that you
complete the replacement procedure within this time limit.
If you are running a Cisco IOS Release that does not support the PRODUCT ID
LED/switch feature, then ensure that the PRODUCT ID LED/switch is not
pressed and is not illuminated. Upgrade to a supported Cisco IOS Release on the
chassis.
If you cannot upgrade to a supported Cisco IOS Release, then ensure that
Note
the PRODUCT ID LED/switch is not pressed and not illuminated (green).
If you are running a Cisco IOS Release that supports this feature, but the
FAN-MISSING alarm is still being triggered, then follow the steps below to clear
the alarm so that the software recognizes the fan module:
Ensure that the PRODUCT ID LED/switch is pressed and illuminated
1.
(green).
Remove the fan assembly module.
2.
Wait for 1 minute and reinsert the fan assembly module.
3.
If the alarm is still being triggered, and the software still does not recognize the
fan, then the fan may be faulty, you may have to replace the fan module.
If none of the above solves the problem, see the
Submitting a Service Request" section on page
"Obtaining Documentation and
71.
OL-24972-01