Table of Contents
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3EM13853AF
Issue 01, September 2007
1-6
The following guidelines and information should be observed during
2.5
troubleshooting:
•
Trouble clearing begins with an analysis of alarm indications. The
proper TAP is referenced in the IXL.
•
Clear upstream problems first. This may also clear downstream
problems.
•
As a rule, no circuit card should be physically removed unless it was
logically removed by entering the appropriate TL1 command.
Exceptions to this are addressed in specific DLPs.
•
To avoid unnecessary service interruption, exercise care when
removing circuit cards, performing commands, and doing other
maintenance tasks.
•
Always follow electrostatic-sensitive device procedures when handling
circuit cards.
•
TL1 commands can be entered directly or in Menu mode as desired.
•
After circuit card replacement, alarms can take up to 120 seconds to
clear. Allow time for the alarm to clear before assuming the
replacement did not clear the trouble.
•
When replacing a circuit card does not clear the trouble, remove the
replacement circuit card and return the original circuit card to service.
•
When TAPs fail to clear the fault, an obscure or multiple fault is
assumed to exist.
Introduction
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