PXI Section of SCXI Combo Chassis Won't Turn On

Updated May 3, 2018

Reported In


  • PXI-1050

Issue Details

I have a combination PXI/SCXI chassis that has worked properly in the past. The SCXI power light comes on, but the PXI light does not. When I run a program or look up the device in NI MAX, I see the error "Unable to connect to real-time target." How do I fix this?


Try the following troubleshooting steps:
  • Remove all cards except for the controller from the chassis. If this fixes it, figure out which card causes the chassis to power on improperly. This card is most likely broken.
  • Try the same setup in a different chassis. If this works properly, the problem is most likely a malfunctioning power supply, and the chassis will need to be sent in for repair. 


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