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 14 (click to view)
The ovens
SIG 400
Most second oven cooking should be carried out using the shelf provided in shelf position 2. However when cooking a small joint or a deep cake you can use the shelf on the base of the second oven to allow enough air to circulate around the food.
Shelf on base
For safety the shelves will only pull out so far. If you want to remove a shelf completely, pull it forward as far as it will go, raise the front edge and lift it out. To put the shelf into a different position, keep the front edge raised, slot the shelf on to the runner, lower the front edge and slide the shelf in.
Baking trays and dishes For your safety
Never place cooking dishes, trays and so on over the oven burners. This will damage the cooker as well as the cookware and possibly the floor covering underneath the cooker.
Leave a gap of 13mm (½") between all dishes and the sides of the oven so the heat can circulate properly. Do not push dishes too far back as food will burn if it overhangs the burner flames.
For the best results from the main oven we recommend that you use a baking tray which is 310mm (12") square. If you use a tray or tin which is larger than this, you may need to turn it around during cooking. The size of tray which should be used in the second oven should not be bigger than 310mm x 230mm (12" x 9"). Place the longest side parallel with the door. Place single dishes on the centre of the shelf. You may need to turn large items around during cooking. Turn all food round in the second oven.
