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.
ThankΒ΄s for your help, I already recived these manual from you
Text excerpt from page 30 (click to view)
If the washing results are not satisfactory
If the washing is grey and there are calcium deposits in the drum â¢ Too little detergent was used. â¢ The wrong detergent was used. â¢ Special soiling was not pre-treated. â¢ Program or temperature not set correctly. â¢ When using component detergents, the individual components were not used in the correct proportions. If there are still gray stains on the washing â¢ Washing soiled with ointments, grease or oils was washed with too little detergent. â¢ Too lower temperature was used for washing. â¢ A common cause is that softener â particularly that in concentrated form â has got onto the washing. Wash out any such spots as quickly as possible and use that particular softener carefully. If at the end of the last rinse foam is still visible â¢ Modern detergents can cause foam also in the last rinse. The washing is however sufficiently rinsed. If there are white remnants on the washing â¢ This is an insoluble material contained in modern detergents. This is not the result of unsatisfactory rinsing. Shake or brush the washing. Perhaps you should turn the washing inside out before washing in future. Reconsider choice of detergent, possibly use liquid detergent.