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 35 (click to view)
ROUTING MODES
� In the example (see previous column) we have a track with a stereo audio file. The track we have renamed �Source�. This is the track we would like to process through Fabrik C. Below we have created an additional audio-track. This is the track we will monitor through. We have renamed the track �Fabrik C out�. Make the �Fabrik C out� track stereo by pressing the mono/stereo button.
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Activate the monitor symbol on the �Fabrik C mon� track.
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Set �in� to IN 5+IN 6. Set �out� to BUS 1.
To easily switch between recording and monitoring, setup P1 and P2 as recording and monitoring programs. You can then switch between these programs using the DSP select button on the front panel.