Technical data

C.1 Troubleshooting Overview
The troubleshooting techniques described in Table C–1 do not identify all
possible problems with the system, nor do the suggested corrective actions
remedy all problems. For additional information, refer to Chapter 2 for
diagnostic testing and test command procedures.
When to Use the Console
If the power-up tests are not successful, then use the console error messages
to identify the failed FRU, or you can run the self-test, system test, and utility
tests in the Digital Services environment to help isolate the failing FRU. The
console error messages are interpreted in Appendix A.
When to Use the Diagnostic LEDs
If the system is unable to set up the console, then use the diagnostic LEDs that
are located on the front of the Model 60 system box and on the rear of the VLC
system box. The diagnostic LEDs are listed in Appendix B.
C.2 Troubleshooting: Symptoms, Causes, and Corrective
Action
The following describes how to use Table C–1, which lists possible symptoms,
causes, and corrective action.
Step Procedure
1 Note the symptoms of the problem.
2 Check the Symptom column in Table C–1 for a match.
3 Check the conditions for that symptom in the Possible Cause column.
Note
If there is more than one possible cause, then check
the possible causes and solutions in the order shown
in the table.
4 Follow the advice in the Corrective Action column.
Table C–1 provides troubleshooting techniques.
C–2 Troubleshooting