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 15 (click to view)
i Hints and Tips
There should always be at least 2.5 cm (1") between the top of the food and the heating element. This gives the best cooking results and allows room for yeast mixtures to rise, Yorkshire puddings, etc. When cooking cakes, pastry, scones, bread etc., place the tins or baking trays centrally below element. Ensure that food is placed centrally on the shelf and there is sufficient room around the baking tray/dish to allow for maximum circulation. Stand dishes on suitable sized baking trays to prevent spillage onto the oven base and to help reduce cleaning. The material and finish of the baking tray and dishes will affect the degree of base browning of the food. Enamelware, dark, heavy or non-stick utensils increase base browning. Shiny aluminium or polished steel trays reflect the heat away and give less base browning.
DO NOT use the grill pan or meat tin as a baking tray as this will increase base browning of the food.
Because of the smaller cooking space, lower temperatures and shorter cooking times are sometimes required. For economy, leave the door open for the shortest possible time, particularly when placing food into a preheated oven.