The owner's manual/operating instructions that I purchased was the original factory document and it was in at least three and maybe more languages. I no longer have it because I sold the tape recorder and included the owner's manual/operating instructions and a service/repair manual that I bought on ebay for the new owner.
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.
Great price, Quick delivery, the document was very usefull A+++++++++++++++
Text excerpt from page 22 (click to view)
Special I-
mps I
Keep the kitchen well ventilated during the cleaning cycle to help get rid of normal heat, odors and smoke.
Clean the oven before it gets heavily soiled. Cleaning a very soiled oven takes longer and results in more smoke than usual.
If the cleaning cycle doesn�t get the oven as clean as you expected, the cycle may not have been set long enough or you may not have prepared the oven properly. Set the cleaning time longer the next time and hand clean areas noted on page 20.
Oven racks lose their shine, discolor and become harder to slide on their guides when they are left in the oven during the cleaning cycle. To make them slide easier, polish the edges of the racks with a soapy steel-wool pad, rinse well and wipe on a thin coat of salad oil.
To stop the cleanlnfij cycle at any time: 1. Push In and turn the Stop Time Knob olockwlre until it points to the right time of day.
2. Turn the Oven Selector and Oven Temperature Control to OFF. When the Lock Light turns off, move the Lock Lever back to fhe Cook Posltion. DO MOT K)RCE IT. Wait until it moves easily.