Field Notice: FN - 70277 - DC Power Supply Hardware Component Failure Results in Loss of Power Output - Hardware Upgrade Required

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.

Revision History

Revision	Publish Date	Comments
2.2	16-Dec-22	Updated the Upgrade Program to use Support Case Manager (SCM)
2.1	30-Sep-19	Updated the How to Identify Affected Products Section and Added the Serial Number Validation Section
2.0	25-Feb-19	Updated for External Publication
1.0	27-Jul-18	Initial Release

Products Affected

Affected Product ID	Comments
N9K-PDC-3000W-B=

Defect Information

Defect ID	Headline
CSCvo44733	Nexus 9500 EoR 3000W Power Supply Failure

Problem Description

A 3KW DC power supply hardware component failure results in the loss of power output. This power supply is used in 4-slot, 8-slot, and 16-slot Nexus 9500 modular chassis.

Background

Due to a firmware defect, improper handling of certain internal conditions leads to a component failure. As a result, the power supply does not provide DC output. This is reported as “shutdown” in NX-OS.

Problem Symptom

After the power supply encounters the component failure, the systems flags “shutdown” with the show environment command.

Workaround/Solution

Cisco recommends that the affected power supply with the old firmware Versions 4.0/4.05 be replaced.

How To Identify Affected Products

In order to verify if your product is affected by this issue, use the Serial Number Validation Tool to validate the serial number for your device(s). The serial number for the affected device(s) should be included in the form in this field notice.

After you validate your device(s), use the CLI in order to validate the power supply’s firmware version. The command to display the firmware version is show hardware internal version. The versions P:4.0,S:4.05 are affected with this symptom, while versions P:4.02,S:4.05 are upgraded versions that have been updated with the fix. If you see version information which matches this example output, then your product has the required fix.

This is an example of versions upgraded with the fix:

Serial Number Validation (Cisco Internal Only)

This field notice provides the ability to identify if the serial number(s) of a device are impacted by this issue. To verify enter your serial number(s) at the following link: https://wwwin-cqi.cisco.com/cqi/snv.htm

Serial Number Validation

This field notice provides the ability to identify if the serial number(s) of a device are impacted by this issue. To verify enter your serial number(s) at the following link: https://snvui.cisco.com/snv/FN70277

Upgrade Program Information

Support Case Manager must be used for ordering replacement parts for this Field Notice.

Click on the following link to open Support Case Manager in a new tab:
https://mycase.cloudapps.cisco.com/fieldnotice?fn=FN70277

1. Serial Numbers (SNs) must be provided and be affected.
   • SN Entitlement Check will be performed.
   • Order entry supports up to 50 SNs per request. If you have more than 50, you will need to submit more than 1 request.
2. One ship to address per request.
3. Service Request number (SR#) is not required, but if you have an Existing SR# please enter it for better tracking purposes.

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:

• Open a service request on Cisco.com
• By email
• By telephone

Receive Email Notification For New Field Notices

Cisco Notification Service—Set up a profile to receive email updates about reliability, safety, network security, and end-of-sale issues for the Cisco products you specify.