Bridgeport Interact 24vdc power supply.

Hi all, I'm new to the forum, have just purchased a 1984 bridgeport interact series 1 with heidenhain tnc145 controller. I'm getting the relay error, estops are ok but I'm not convinced the 24vdc power supply is functioning. Can anyone post a pic of it to confirm I'm testing the correct part? I am running a transwave static phase converter for it doesn't show any output but I assume that is because of the relay error so motor etc isn't drawing a current.

Any help you can give to resolve my issue is appreciated as I'm dieing to play.