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 16 (click to view)
IF SOMETHING DOESN'T WORK ?
Problems The machine vibrates or is too noisy. Solutions Check that : all the transit bolts and packing have been removed, all the feet resting firmly on the ground, the lock nuts have been secrured, the machine does not touch something, the load is sufficent.
The machine empties as it fills.
Check that : the end of the drain hose is not too low.
There is water on the floor.
Check that : there is not too much detergent or unsuitable detergent. The formation of foam can cause water leaks, one of the detergent dispenser is not obstructed, the drain hose is well hanged, if one of the joints or the tap leaking ? It is not always easy to see as the leak often runs along the hose, is the drain filter cover properly closed ?
Softener detergent flows out the overflow orifice.
Check that : you have respected the adviced quantities, check that the siphons located at the back of the detergent dispenser are not obstructed.