[maen291]

Hello
I have a heidenhain TNC 121 with this user manual but its language is Germany and that is not helpful.
https://manualzz.com/doc/4428311/20712501---heidenhain
This TNC worked well but suddenly its battery wire interrupted my TNC keys doesn't work at all and it hasn't any reaction , its monitor is same as attached picture.
I think its program erased but whats is the solution.