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 15 (click to view)
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Turn the screws clockwise to lift the front edge of the hood and use a spirit level to check the hood is positioned at right angles to the wall before fitting the security system. The wall brackets have two studs and when the cooker hood is hung onto the brackets the studs project trought the holes above the levelling screws. When the hood is level fit the two shake proof washers and nuts supplied to fully secure the cooker hood.