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 10 (click to view)
Caring for your range
Control Panel
1. Pull knobs
straight off.
2. Use warm soapy water, baking soda and a damp soft cloth or spray glass cleaner to wipe the control panels. Rinse and wipe dry.
3. Wash knobs in warm soapy water or use baking soda and a damp, soft cloth or follow directions provided with glass cleaner. Rinse well and dry. CAUTION: Do not soak or use abrasive cleansers. They could Nb off the marklngs.
4. Push the knobs straight back on. Make sure they point to OFF.
