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 you for your manual It has the basic things to and i use the Oszi for Longer Time.
THX
Text excerpt from page 7 (click to view)
Using the hood
Speed regulation
The hood has a variable speed motor. For the best performance, we recommend using the highest speed in particular cases of strong odour and vapour concentration. We recommend starting up the hood a few minutes before cooking and keeping it running until all the odours have been eliminated.
Work light
The hood has two lamps 40W (E14). Switch lamps ON and OFF with the left slide switch.
Fig. 4
Correct ventilation
To have the cooker hood working correctly the windows in the kitchen should be closed. In stead a window in an adjacent room should be open.
Important to know
If the hood is run at the same time as a burner or fireplace that depend on ambient air (for example gas, Diesel, coal or wood heaters, water heaters, etc.) be careful, because the hood, when it exhausts the air, removes the ambient air required by the burner or fireplace for combustion. Not valid if the cooker hood is used in recirculation mode. Fig. 5