Turns out this was not the manual i was looking for. The concertmate 670 keyboard i have is a "Realistic" model made for Radio Shack and none of the diagrams on the owners manual i received matches up. HOWEVER, I must say the service Owners Manual provides was fast and efficient by being available online. The manual was in good readable condition and easily downloaded.
Thank´s for your help, I already recived these manual from you
Text excerpt from page 32 (click to view)
Gerät einschieben Push appliance into place Mettre en place l�appareil Introdurre l�apparecchio Apparaat naar binnenschuiven Introducir el aparato Skap skyves inn Skjut in aggregatet Laitteen työntäminen sisälle