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 1 (click to view)
Module No.1799
TO SET TIME
Pull the crown out. Set the hands by turning the crown in either direction. Push the crown in on a time signal.
Crown
s For watch with the elapsed time bezel
Rotate the elapsed time bezel to align the mark with the minute hand. After certain amount of time elapsed, read the graduation on the elapsed time bezel which the minute hand points to. The elapsed time is indicated.
Elapsed time bezel
� Some water resistant models are equipped with a screw lock crown. � With such models, you must unscrew the crown in the direction noted in the illustration to loosen it before you can pull it out. Do not pull too forcibly on such crowns. � Also note that such watches are not water resistant while their crowns are loosened. Be sure to screw the crowns back in as far as they will go after making any setting.