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 24 (click to view)
From the Electrolux Group. The world's No.1 choice. The Electrolux Group is the world's largest producer of powered appliances for kifchen, cleaning and outdoor use. More than 55 million Electrolux Group products (such as refrigerations, cookers, washing machines, vaccum cleaners, chain saws and lawn mowers) are sold each year to a value of approx. USD 14 billion in more than 150 countries around the world.