The owner's manual/operating instructions that I purchased was the original factory document and it was in at least three and maybe more languages. I no longer have it because I sold the tape recorder and included the owner's manual/operating instructions and a service/repair manual that I bought on ebay for the new owner.
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.
Great price, Quick delivery, the document was very usefull A+++++++++++++++
Text excerpt from page 11 (click to view)
(G) befestigen - Abb. 11. Das untere Rohr anheben, mit Klebeband befestigen und den Schlauch mit der Haubenuntersetzung verbinden. Die elektrische Verbindung der Haube über das Versorgungskabel herstellen. Das untere Rohr senken und auf die Haube legen. Installieren Sie die Kohlefilter und fügen Sie die beiden Filterzungen in den Sitz ein (Abb. 13), indem Sie sie nach oben drehen.
