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.
Actually, I was looking for this information for 3 years!...now thanks to you, the manual is on my hands and of great help, cause I understand now where I was doing wrong connections and wires...excellent, I'll be back to you if in need, thank you.
Text excerpt from page 1 (click to view)
511 D/561 D/5618 D
Lüfterbausteine Dunstabzugshauben Fan Modules Fume Extractor Hoods Groupes aspirants Hottes aspirantes Elementi costruttivi della soffiante Cuffie incorporabili di intercettazione fumi Ventilatorbouwstenen Afzuigkappen
Montage- und Gebrauchsanweisung Instructions for Installation and Use Instructions de montage et mode d�emploi Istruzioni di montaggio e per l�uso Montage- en gebruiksaanwijzing