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 you for your manual It has the basic things to and i use the Oszi for Longer Time.
THX
Text excerpt from page 9 (click to view)
Beskyt glaskeramikpladen
Læg en beskyttende hinde over glaskeramikpladen inden De anvender den. På denne måde bliver det nemmere at rengøre pladen, og De forhindrer at evt. overkog brænder sig meget fast. Sådan gør De: 1. Hæld nogle dråber af det medfølgende rengøringsmiddel på et stykke køkkenrulle, og gnid hele pladen ind i rengøringsmidlet. 2. Póler pladen med en ren klud til den er tør.