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Cisco ONS 15500 Series

Field Notice: FN - 61757 - 15540-LCMB-1400 and 15540-LCMB-1401 - SubSlot Power Failure With Two Transponders Inserted


Updated September 20, 2005
August 02, 2004



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 Top Assembly Comments
Products affected Part #
15540-LCMB-1400  800-17218-01
800-17218-02
800-17218-03
800-17218-04
800-17218-05 
800-17218-06 and later are not affected by this issue. 
15540-LCMB-1401  800-19832-01
800-19832-02
800-19832-03
800-19832-04
800-19832-05 
800-19832-06 and later are not affected by this issue. 
 
 

Problem Description

1) 15540-10GE-03B3xx cards may not function in Subslot 1 of the 15540-LCMB-1400 or 15540-LCMB-1401 Top Assembly Part Numbers listed above. Cards include the 15540-10GE-03B301 through 15540-10GE-03B332 (Top Assembly Number 800-18xxx-03 and later)

2) Either +5V or -5V DC/DC supplies may fail when all daughter cards are removed from the 15540-LCMB-1400 or 15540-LCMB-1401 subslots while the system's power is on.

Background

1) To correct a condition where the voltage drop from the 1.8V DC/DC converter to Subslot 1 is too large to support daughter cards based on UT modules.

2) Replaced DC/DC converters to correct a failure under a no-load condition.

Problem Symptom

1) When a 15540-10GE-03B3xx Universal Transponder (UT) Based daughter cards is present in Subslot 1 of the 15540-LCMB-1400 or 15540-LCMB-1401 Top Assembly Part Numbers listed above the transpoder may not operate correctly. These failures are only seen when using UT-Based 10G Transponders with the voltage trimmed LOW.

2) When a 15540-LCMB-1400 or 15540-LCMB-1401 is powered with no 10G Daughter cards present, or a Daughter card is hot-swapped, the +5V or -5V DC/DC converter may fail due to the no-load condition.

Workaround/Solution

These issues has been corrected through changes to the 15540-LCMB-1400 and 15540-LCMB-1401 assemblies. Upgraded material can be obtained by contacting the Technal Assistance Center to request an return merchandise authorization (RMA).

How to Identify Hardware Levels

To determine the Version of the Linecard Motherboard, use the following commands in privileged EXEC mode:

show hardware detail

or

show hardware linecard slot#

The following is an example of the output of the module in slot 5 using the show hardware linecard slot#

15540# show hardware linecard 5

-------------------------------------------------------------------
Slot Number : 5/*
Controller Type : 0x1012
On-Board Description : ONS15540_XPS_2-10GE/OC192C_TSP_SPLITTER
Orderable Product Number: 15540-LCMB-1400=
Board Part Number : 800-17218-04
Board Revision : A0
Serial Number : CNH0647006X
Manufacturing Date : 05/01/2003
Hardware Version : 4.1
RMA Number :
RMA Failure Code :
Functional Image Version: 3.28
Function-ID : 0
Subcard Power Control : 0:ON, 1:ON, 2:ON, 3:ON
--------------------------------------------------------------------------------

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