Guest

Cisco ONS 15454 Series Multiservice Provisioning Platforms

Field Notice: FN - 27415 - ONG ONS15454 Protective Cover For The Power, Alarming and WireWrap Pin Assembly on The Back of The Shelf


Updated October 25, 2005

November 21, 2003



NOTICE:

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Products Affected

Product HW Rev.
15454-4SA-1BNC1   C0  
15454-SA-ANSI   H0  
15454-SA-HDAHDB2   D0  

Problem Description

With the metal alarm cover, there is a potential of some alarm pins on the alarm pin wire-wrap block shorting against the pins.
With external pressure on the metal cover, bogus alarms may occur. These alarms will clear when pressure is removed or if the cover is removed from the assembly.  

Background

There was a a change that was made to the Power, Alarm, and Wirewrap protective cover.
The cover was originally plastic and was replaced with a metal cover.
The problem was noticed only after the assemblies were shipping to customers and some customers would see this issue.
The cover did not have the proper clearance for the assembly and the cover could be pushed in toward the pins and a short could occur.

Problem Symptoms

Bogus alarms.
Shorting of supply voltage to external alarms.

Workaround/Solution

Disable control outputs on contact closures.
Replace the existing Metal cover and revert back to the original Plastic cover.

DO NOT SEND BACK THE SHELF ASSEMBLY OR THE DEFECTIVE COVER.

A new kit will be sent with everything needed to fix this issue.  

For More Information