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QFX5100 - AC Power supply may falsely detect an error and shut down

  [TSB16732] Show Article Properties


Alert Type:
PSN - Product Support Notification
Product Affected:
JPSU-850W-AC-AFI REV 2 or earlier
JPSU-850W-AC-AFO REV 2 or earlier
Alert Description:

QFX5100 AC Power supplies may falsely detect an error and shut down under certain temperature fluctuations.

Due to an incorrect algorithm in the firmware, the reported AC Power supply may falsely detect an error and shut itself down under certain temperature fluctuations.
If both power supplies shut down due to this false detection, it will cause the device to reboot.

Power Supplies Affected:
  • JPSU-850W-AC-AFI      Revision 2 or earlier
  • JPSU-850W-AC-AFO    Revision 2 or earlier

This issue is resolved by PR1062224.

Solution:


PR1062224 fixes this problem for the power supplies listed.

If you have either of these power supplies installed, the fix is to upgrade Junos Software to one of the releases mentioned below. 

You can access PR1062224 using the link under Related Links at the bottom of this page.

Junos Software Releases with Fix:
  • 13.2X51-D38 and above Service Release
  • 14.1X53-D26 and above Service Release
  • 15.1R2 and above Maintenance Release
  • All later releases

Please contact the Juniper Technical Assistance Center (JTAC) for additional details, or if there are questions concerning this TSB.
Implementation:

The fix for PR1062224 has been implemented and is deployed via a Junos Software release.

Junos Software Releases with Fix:
  • 13.2X51-D38 and above Service Release
  • 14.1X53-D26 and above Service Release
  • 15.1R2 and above Maintenance Release
  • All later releases
A link to PR1062224 can be found below.

Please contact the Juniper Technical Assistance Center (JTAC) for additional details, or if there are questions concerning this TSB.
Related Links: