Troubleshooting Blinking PS LED on PXIe Chassis

Updated Jun 29, 2023

Environment

Hardware

  • PXIe-1095
  • PXIe-1086DC

Chassis such as PXIe-1095 and PXIe-1086DC come with two hot-swappable power supplies. For better troubleshooting purposes, they come with blinking PS LED behaviour. In this article, ideas on using this LED behaviour to troubleshoot power supply issues will be shared.

 

Generally, when a chassis with two hot-swappable power supplies has a blinking PS LED, it means one of the power supplies is out of range or faulty. The following suggestion could be performed to narrow down which component of the system is faulty:
  • Ensure the power cord is good and in working condition.
  • Ensure all power connectors are connected to a working power source.
    • If PXIe-1095 have both hot-swappable power supplies inserted but only one is connected to a power source, blinking PS LED is an expected behaviour.
  • Verify in NI MAX which power supply is faulty. The following image illustrates the NI MAX portion showing the power supply status. 
    image.png
  • Exchange the location of the power supplies. If the status in NI MAX is changed with the exchange of power supplies location, the power supply with faulted status is faulty. If the faulted status remains unchanged, the chassis power supply slot is faulty.
  • Use another working power supply on the chassis. If the status is changed to on, the replaced power supply is faulty. If the status remains faulted, the chassis is faulty.