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 29 (click to view)
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A
SmartSurf (Alternating Channels)
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series of previously viewed channels can be selected with the SURF button. Switch between different TV programs that currently interest you. SmartSurf lets you set up to five channels in its quick viewing list. Press CH +/ � (or the Number buttons) to select a channel to add to the SURF list. Press SURF while the channel number appears. Press : to add the channel to the SURF list. Repeat steps 1 through 3 to add additional channels (up to five) to the SURF list. To remove a channel from the SURF list, choose the channel with the Number buttons and press SURF while the channel number appears. Then press :; the channel will be deleted from the SURF list. Press STATUS/EXIT to remove the on-screen menu.
Press SURF repeatedly during TV viewing to scan through the channels in the SURF list.