Return The System To Service - Nortel SONET AccessNode User Manual

9-18 Replacing the low-voltage disconnect unit
Procedure 9-6

Return the system to service

Use this procedure to return the system to service after replacing an LVD unit
in the modular business package (MBP).
If you can not successfully complete this procedure, contact your next level of
support.
Requirements
There are no specific requirements for performing this procedure. However,
if you use procedures in other documents, those documents will list any
requirements, tools, materials or other documentation.
Tools and materials
No tools or materials are required to perform this procedure.
Documentation references
Before beginning this procedure, obtain and have on-site the following
documents that you may need to restore the system to service:
•
•
Action
Step
1
2
3
4
5
AccessNode P0904244 Issue 1.0
Alarm and Trouble Clearing Procedures, 323-3001-543, in Maintenance,
Volume 5A
Recovery Procedures, 323-3001-545, in Maintenance, Volume 5C
Action
Ensure that all circuit breakers on the rectifiers are ON and all BEM circuit
breakers are ON.
Ensure that all circuit breakers on the dc distribution unit are ON.
Turn all circuit breakers on the BIP to the ON position.
Observe all alarm indicators throughout the system.
Note: Allow the system to stabilize for 25 minutes.
If an alarm is present, troubleshoot the alarm condition according to the
procedures listed in Alarm and Trouble Clearing Procedures , 323-3001-543,
in Maintenance , Volume 5A and in Recovery Procedures , 323-3001-545, in
Maintenance , Volume 5C.
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