Trouble with the EM55 at Hadersdorf/Kamp, Lower Austria, in 2019

Here is a short posting with two year old pictures of the EM55-type interlocking machine at Hadersdorf/Kamp in Lower Austria. I had visited my mother, and before leaving from Hadersdorf, I looked into the traffic bureau. There, two signal technicians had worked for more than six hours on locating a problem with a signal, with—at the time of my visit—no tangible result. One of the two graciously took photos with his smartphone, which you can see below:

Opened EM 55, traffic bureau Hadersdorf, 2019

Opened EM 55, traffic bureau Hadersdorf, 2019

Opened EM 55, traffic bureau Hadersdorf, 2019

Opened EM 55, traffic bureau Hadersdorf, 2019

Opened EM 55, traffic bureau Hadersdorf, 2019

Here is part of the circuit diagram, studied by the technician to understand what's going on:

Part of the EM55's circuit diagram, traffic bureau Hadersdorf, 2019

The interlocking is still operational as of today, but its end of life will come in 2022 or 2023 at the latest.