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 14 (click to view)
THINGS TO NOTE
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The indicator neon will glow. It may turn ON and OFF during use to show that the setting is being maintained. The cooling fan for the controls may operate after a time.
Do not place dishes, tins and trays directly on the oven base as it becomes very hot and damage will occur.
TO FIT THE TOP OVEN SHELF
The cranked shelf should be fitted with the straight rods uppermost on the frame and the forms towards the back of the oven. To remove a shelf slide the shelf towards you until the shelf stop is reached. Tilt shelf up at the front so that the stops clear the side supports. Lift shelf clear. To install a shelf, reverse the above steps. Each shelf position has an upper and lower support wire, ensure the shelf is placed between these two support wires.
HINTS AND TIPS
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Single level cooking gives best results. If you require more than one level of cooking use the main fan oven.
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The middle shelf allows for the best heat distribution. To increase base browning simply lower the shelf position. To increase top browning raise, the shelf position. There should always be at least 2.5cm (1�) between the top of the food and the element. This gives best cooking results and allows room for rise in yeast mixtures, Yorkshire puddings etc. When cooking cakes, pastry, scones, bread etc., place the tins or baking trays centrally below the element. Ensure that food is placed centrally on the shelf and there is sufficient room around the baking tray or dish to allow for maximum circulation. Stand dishes on a suitably sized baking tray on the shelf to prevent spillage onto the oven base and to help reduce cleaning.