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.
Text excerpt from page 15 (click to view)
Maintenance and cleaning
Before starting maintenance or cleaning, switch off the unit and withdraw the mains plug. Wipe over unit and dust-collector compartment if necessary with a damp cloth and allow to dry. Do not use abrasive materials or solvents. Clean floor nozzle and brush webs occasionally with the crevice nozzle. Do not wash the dust collector in a dishwasher or clean with aggressive detergents. (This could damage or dull the dust collector).
What to do if...
...it is difficult to move the nozzle: reduce the suction capacity. This does not reduce the cleaning effect. ...the motor overheating protection has switched off the unit: e.g. owing to overload of the motor, by full dust collector/dust bag or blocked tools. Switch off the unit, withdraw the mains plug, allow motor to cool. Check dust collector/dust bag, suction tube and suction hose; removed any blockage. The unit can be switched on again after approx. 30 minutes. ...the fuse has blown: the fuse can blow if other electrical units with high consumption are used at the same time as the vacuum cleaner from the same circuit. In this case before switching on set the suction capacity control to the lowest level and only select a higher level after switching on.
For the sake of the environment
Do not simply discard packing material and used units! Unit packing: we recommend preserving the packing material for the term of the warranty to permit reliable transport. Take the polyethylene (PE) bag to a PE recycling bank. Recycling the vacuum cleaner at the end of its service life: the plastic parts are identified by a material code, so that they can be recycled at the end of the service life of the vacuum cleaner in the same way as other materials. Your local authority environment office will provide information on the location of the nearest recycling facility.