Nortel Networks 5399 Access Switch Hardware Installation Guide
Chapter 4 Troubleshooting Procedures
4-6
Table4-2. TroubleshootingGuide (continued)
Power-UpDiagnostic Messages
Power-updiagnostics run when the Remote Access Concentrator is
powered upor reset. During the power-up process the following text is
displayed on the serviceport terminal:
To enter "Monitor Mode" pleas e depress the SPACE key within
10 seconds.
If you press the spaceba r within10 seconds, the following text is
displayed:
Monitor Mode selected, ple ase wait for Confidence tests to
complete.
If you do not press the spaceba r withinthe time allotted, the following
text is displayed:
Defaulting to Normal Boot Mode.
If an error occurs during confidencetests, the following message is
displayed:
Fatal Error
Condition PossibleCause CorrectiveAction
Annunciatoris off;
othermodule
annunciatorsare on;
chassisLEDsareon.
Nopower to module
(blownfuse); failed
DC-to-DC converter).
Replacethe module.
The Attn and Unit
ModuleStatus
LEDs are amber.
TheRemote Access
Concentratordid not pass
itsdiagnostics or is not
workingnormally.
Resetthe Remote
AccessConcentrator.