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 11 (click to view)
Freezer
The freezer compartment will become progressively covered with frost. This should be removed with the special plastic scraper provided, whenever the thickness of the frost reaches 6 mm (¼�). During this operation it is not necessary to switch of the power supply or to remove the foodstuffs. However, when the ice becomes very thick on the inner liner, complete defrosting should be carried out and it is advisable to perform this operation when the appliance is empty. For complete defrosting (once or twice a year) proceed as follows: 1. Disconnect the appliance from the mains. 2. Remove any food from inside the freezer, wrap it in several sheets of newspaper and store in a cool, dry place. Ensure that the fridge door is not opened to protect the food in the refrigerator while defrosting the freezer. 3. When defrosting is complete, dry the interior thoroughly. 4. Reconnect the appliance to the mains, set the thermostat control knob to the maximum setting. Leave the appliance to run for at least two hours. 5. Replace the previously removed food. 6. Return the thermostat control knob to a medium setting. Important A temperature rise of the frozen food packs during defrosting may shorten their safe storage life. Never use sharp metal tools to scrape off frost from the evaporator as this could damage the appliance beyond repair.
How to change the bulb
Should the light fail to work you can change it as below: Disconnect the appliance from the electricity supply. Unscrew the screw holding the cover (1), press the rear hook (2) and at the same time slide the cover in the direction indicated by arrow (3). So the bulb can be replaced. (Bulb type: 230-240 V, 15 W, E 14 thread). After changing the bulb replace the cover, snap it in place, screw back the screw and reconnect the appliance to the mains supply.
