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 19 (click to view)
USING YOUR RANGE
3. Within 15 seconds, press and hold BAKE until the 2-digit display appears. 4. Release BAKE.
The display will show the current offset temperature, for example �00,� if you have not previously adjusted the temperature.
PRESS
YOU SEE
Two-digit display will appear.
BAKE
5. Set the new offset temperature.
Press the �up� (s) pad to raise the temperature or the �down� (t) pad to lower the temperature in 5°F (1°C) amounts. You can set the temperature as low as -35°F (-17°C) or as high as +35°F (+17°C). A minus (-) sign will appear before the number when decreasing the temperature setting to show the oven will be cooler by the displayed amount. There is no sign in front of the number when increasing the temperature setting.
PRESS
YOU SEE
Display shows new offset temperature.
6. Complete your entry.
PRESS
YOU SEE
Display shows time of day.
OFF
CANCEL
Left oven:
1. Make sure the Left Oven Temperature Control Knob is turned to the off position. Pull knob straight off and turn it over.