TROUBLESHOOTING
System Enclosure 1-7
5.0 TROUBLESHOOTING
The system enclosure provides passive mechanical and electrical connections to the card rack
and power subsystem. It is highly unlikely that the system enclosure will cause a system
failure in the course of normal operation. The most likely cause of damage to a system
enclosure is mechanical damage resulting in a misalignment of racks or an electrical short
circuit within the inter-rack cabling. More specific causes of damage include:
•
Bumping into the enclosure
•
Sudden or sharp pulling on network or EIA/TIA-232 cables attached to the I/O modules
•
Electrical surge or short circuit at power input feeds
•
Short circuit caused by placing or dropping a conductive tool (i.e., screwdriver or pliers)
in the enclosure
•
Electrical surge induced through network connections caused by lightning or high
voltage cross-connection through the MDF/digital cross connector.
To minimize any chance of mechanical or electrical damage to the enclosure, follow the
recommended system clearances and central office practices for handling the MDF/digital
cross connectors and power connections. If mechanical or electrical damage does occur, refer to
the troubleshooting information in the appropriate Cisco Systems technical description for the
damaged component.
6.0 RELATED DOCUMENTS
For additional information regarding the installation and maintenance of the VCO/4K system
enclosure, refer to the following Cisco Systems publications:
•
Cisco VCO/4K Product Overview
•
Cisco VCO/4K Site Preparation Guide
•
Cisco VCO/4K Hardware Planning Guide
•
Cisco VCO/4K Hardware Installation Manual
•
Cisco VCO/4K System Maintenance Manual
