Installation
- Place the new circuit board on the 3 snap-in holders.
- Fasten the circuit board with the screw nut.

- Plug the cables and connectors back into the circuit board.
- Push the retaining plate with the circuit board into the housing.
ATTENTION: The cables must not be kinked or damaged by the retaining plate. 
- Reattach the upper part of the housing with 10 screws.
- Replace the front cover.