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Cisco Port Adapters

Field Notice: FN - 29396 - PA-MC-E3 May experience Loss Of Signal (LOS)


Revised November 17, 2006

August 12, 2005


Products Affected

Product

Top Assembly

Printed Circuit Assembly

Part Number

Rev.

Part Number

Rev.

PA-MC-E3=

800-02757-06 and lower

-

73-2410-06 and lower

-

PA-MC-E3

800-02757-06 and lower

-

73-2410-06 and lower

-

Serial Numbers

Random #

31909394
31909397
31909402
33370816
33370817
33370820
33370822
33370829
33370835
33370837
33370845
33370848
33370852
33370856
33371492
33371497
33371499
33371502
33371504
33371505
33371506
33371509
33371511
33371519
33371523
33371524
33371526
33371529
33371531
33371533
33371535
33371537
33371538
33371541
33371542
33371544
33371547
31909381
31909383
31909386
31909387
31909390
31909395
31909398
31909400
31909401
31909404
31909406
33370801
33370802
33370803
33370804
33370805
33370806
33370808
33370809
33370813
33370814
33370815
33370818
33370819
33370821
33370824
33370826
33370827
33370828
33370831
33370833
33370834
33370836
33370838
33370840
33370841
33370844
33370854
33370858
33370860
33370862
33371496
33371501
33371507
31909380
31909382
31909384
31909385
31909388
31909389
31909391
31909392
31909393
31909396
31909399
33370807
33370810
33370823
33370825
33370830
33370839
33370842
33370843
33370846
33370847
33370851
33370853
33370857
33370859
33370861
33371493
33371494
33371495
33371498
33371500
33371503
33371525
33371539
33371540
33371548

Problem Description

The PA-MC-E3 Port Adapters with Serial Numbers listed in the above table, have been identified to have the potential to experience LOS (Loss Of Signal) instability.

Background

The problem is caused by incorrect assembly of a component. The component orientation on the board is rotated by 180 degrees. More detail is provided below in the How to Identify Hardware Levels section. The incorrect orientation of the component causes lower power output levels. As a result the port adapter may not be able to drive an E3 signal over entire length of the cable.

Problem Symptoms

The remote device may log errors or indicate LOS (loss of signal).

Workaround/Solution

Workaround:

None

Solution:

RMA the affected PA-MC-E3 using the following instructions.

Service Level: Mfg New - 3rd Bus Day NON BILLABLE 
     Failure Class: Administrative Request 
     Failure Code: Field Notice Alert

Note:  If the Top Assembly and the Printed Circuit Assembly number for your PA-MC-E3 Port Adapter with a matching Serial Number from the above list is (800-02757-07) and (73-2410-07) and higher respectively then the PA has been upgraded to include the required corrections.

How To Identify Hardware Levels

Use the command show diag slot# [details] [summary] to see details of version and type of Port Adapter.

Router# show diag 
Slot 0: 
Physical slot 0, ~physical slot 0xF, logical slot 0, CBus 1 
Microcode Status 0x4 
Master Enable, LED, WCS Loaded 
Board is analyzed 
Pending I/O Status: Console I/O, Debug I/O 
EEPROM format version 1 
C5IP controller, HW rev 1.0, board revision A0 
Serial number: 00000001 Part number: 73-2410-07 
Test history: 0x00 RMA number: 00-00-00 
Flags: cisco 7000 board; 7500 compatible 
EEPROM contents (hex): 
0x20: 01 1C 01 00 00 00 00 01 00 00 00 01 00 00 00 00 
0x30: 50 00 00 00 00 00 00 00 00 00 00 78 00 00 00 00 
[Additional display text omitted]

Note: The graphics are included to allow visual identification of incorrectly installed transformer. The transformer orientation is rotated by 180 degrees.

fn29396_ii71r4-1.bmp

Revision History

Revision

Date

Comment

1.1

17-NOV-2006

Added Product Number to Products Affected

1.0

12-AUG-2005

Initial Public Release

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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