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 7 (click to view)
Remove the two screws (1) from the upper hinge of the door. Pull the door together with the hinge away from the housing and up off the lower hinge bolt (2-3). Remove screws (4) and pull off the frame edge (5). Slide the decorative panel (6) out of the door frame and insert the new panel (7), so that the upper edge of the panel runs exactly parallel to the upper edge of the frame. A new panel can be inserted more easily into the upper edge of the frame when the two comers are cut off by approx. 5 x 5 mm (8). Put the frame edge (5) back in place and secure with screws (4). Place the door on the lower hinge (9), slot the upper hinge into the opening, press together with the door against the housing and secure with the two screws (11). CHANGING THE LIGHTBULB (Model EA 3080, EA 3120, EA 3140, RH 200) If the lightbulb needs to be changed, pull out the plug and proceed as follows: Press the metal reflector to one side and draw the lamp covering backwards. Replace the bulb and push the covering back into place. A new 10-watt bulb can be obtained at any Dometic service shop. TROUBLE-SHOOTING Before you call a service engineer, carry out the following simple tests: Is there a power failure? Check the fuses. Is the plug firmly connected to the socket and is the socket switched on? Check the socket by plugging in another appliance, eg a table lamp. Is the thermostat at the correct setting? (normally 2 or 3). Has the door not been closed properly causing the inside temperature to rise too quickly? Is the refrigerator level ? Has the ventilation become obstructed?
