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Cisco ONS 15600 Series

Field Notice: *Expired* FN - 60819 - ONS 15600 OC-48 and OC-192 LR Temperature Sensor Module Issue


Revised October 27, 2005

August 30, 2004


NOTICE:

THIS FIELD NOTICE HAS BEEN ARCHIVED AND IS NO LONGER MAINTAINED OR UPDATED BY CISCO.

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

Products Affected

Product Comments
15600-192L4LR1550
Including = suffix
15600-48L16LR1550
Including = suffix

Serial Numbers

Sequential #
[ OC192-LR Boards ] CNH080400UB
CNH080400UD
CNH080400UF
CNH080400UH
CNH080400UJ
CNH080400UK
CNH080400UM
CNH080400UN
CNH080400UP
CNH080400UQ
CNH080600HQ
[ OC48-LR Boards ] CNH080300C6
CNH080300C7
CNH080300C8
CNH080300C9
CNH080300CB
CNH080300CE
CNH080300CL
CNH080300CQ
CNH080300CD
CNH080300CF
CNH080300CG
CNH080300CH
CNH080300CJ
CNH080300CK
CNH080300CM
CNH080300CN
CNH080300CP
CNH080300CR
CNH080501UQ
CNH080501UP
CNH080501UR
CNH080501US
CNH080501UT
CNH080501UU
CNH080501UV
CNH080501UW
CNH080501UX
CNH080501UZ
CNH080501V0
CNH080501V2
CNH080501V3
CNH08080003
CNH08080006
CNH08080007
CNH0808000C

Problem Description

This issue affects only those boards listed in the preceding Serial numbers list.

Due to a documentation error, an incorrect temperature sensing component has been used on affected OC-192 LR and OC-48 assemblies. See Serial Numbers list above.

In some cases, the temp sensor locks up at a given temperature and sends incorrect temperature information. The board may register a temperature that is either higher or lower than the actual temperature on the board. In order for the system to be adversely affected all boards in the system would have to experience this failure.

This is not traffic affecting, but can only be corrected by replacing the temperature sensing component through reworking the assembly.

Background

Given the random nature of this issue, it may never manifest itself in a given system. There have been a total of three failures realized, seen only in modules provided for trials and/or test environments.

Problem Symptoms

Invalid temperature readings may cause incorrect notification for the affected port or module.

Workaround/Solution

Cisco recommends a fix-on-fail strategy for this problem.

As of approximately May 20, 2004 new products that were manufactured under Engineering Change Order (ECO) E078434, which will have a Revision of greater than B0 or deviation D073921 are guaranteed to be free of this problem. Refer to How to Identify Hardware Levels below for instructions on how to view the version and deviation of in-service product.

Service Logistics has known-good inventory at this time. The standard return materials authorization (RMA) process and delivery times are in effect.

Customers seeing this issue should request a replacement RMA of the above referenced products. Please ensure that any boards, for which replacement is sought, are listed by serial number on the Serial Numbers list included in this document. Only those boards listed which do not have deviation D073921 or ECO E078434, which will have a Revision of greater than B0, applied are candidates for replacement under this program.

Note: Products that fall within the serial number range listed above are not affected by this problem if they have deviation D073921 or ECO E078434 applied.

How To Identify Hardware Levels

Only those OC48LR, (15600-48L16LR1550(=) Rev -B0) and OC192LR, (15600-192L4LR1550(=) Rev -B0) modules with serial numbers listed on the preceding Serial Numbers list without the deviation or ECO E078434, which will have a Revision of greater than B0 applied, are affected.

Hardware levels can be determined from within CTC by selecting the Shelf View Inventory tab. From this location the part number and serial number will be visible.

While only the versions of this module listed are possible candidates for this issue, there are two versions of acceptable replacements, one with and one without guide pins. Both versions can be used in all field chassis interchangeably.

Note: Products that fall within the Serial Numbers range listed above are not affected by this problem if they have deviation D073921, evidenced by the presence of a sticker with the Deviation number or ECO E078434, which will have a Revision of greater than B0 applied.

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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