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Nortel Networks 5399 Access Switch Hardware Installation Guide
Chapter 4 Troubleshooting Procedures
4-6
Table 4-2. Troubleshooting Guide (continued)
Power-Up Diagnostic Messages
Power-up diagnostics run when the Remote Access Concentrator is
powered up or reset. During the power-up process the following text is
displayed on the service port terminal:
To enter "Monitor Mode" please depress the SPACE key within
10 seconds.
If you press the space bar within 10 seconds, the following text is
displayed:
Monitor Mode selected, please wait for Confidence tests to
complete.
If you do not press the space bar within the time allotted, the following
text is displayed:
Defaulting to Normal Boot Mode.
If an error occurs during confidence tests, the following message is
displayed:
Fatal Error
Condition Possible Cause Corrective Action
Annunciator is off;
other module
annunciators are on;
chassisLEDsareon.
No power to module
(blown fuse); failed
DC-to-DC converter).
Replace the module.
The Attn and Unit
Module Status
LEDs are amber.
The Remote Access
Concentratordid not pass
its diagnostics or is not
working normally.
Reset the Remote
Access Concentrator.