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 8 (click to view)
Electrolux AG Badenerstrasse 587 8048 Zürich Telefon 01 405 81 11 Telefax 01 405 82 35
From the Electrolux Group. The world´s No.1 choice. Die Electrolux-Gruppe ist der weltweit grö�te Hersteller von gas- und strombetriebenen Geräten für die Küche, zum Reinigen und für Forst und Garten. Jedes Jahr verkauft die Electrolux-Gruppe in über 150 Ländern der Erde über 55 Millionen Produkte (Kühlschränke, Herde, Waschmaschinen, Staubsauger, Motorsägen und Rasenmäher) in einem Wert von rund 14 Mrd. USD.