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 7 (click to view)
MAINTENANCE AND CLEANING
Warning Before any maintenance or cleaning work is carried out, DISCONNECT the appliance from the ELECTRICITY supply. This appliance contains hydrocarbons in its cooling unit maintenance and recharging must therefore only be carried out by authorised technicians.
Internal cleaning
Clean the inside and accessories with warm water and bicarbonate of soda (5ml to 0.5 litre of water). Rinse and dry thoroughly. NEVER USE DETERGENTS, ABRASIVE POWDERS, HIGHLY PERFUMED CLEANING PRODUCTS OR WAX POLISHES, TO CLEAN THE INTERIOR AS THESE WILL DAMAGE THE SURFACE AND LEAVE A STRONG SMELL. Important Do not use abrasive products. Clean the drain hole of the water trough at regular intervals and make sure that the drain hole is never obstructed, so that the defrost water may flow freely.
External cleaning
The appliance is equipped with an air inlet filter (1) and an air outlet duct (2) on the ventilation grid. Keep clean to guarantee good ventilation and good working order of the appliance. The filter can be removed and washed with water, as follows: 1. Pinch flaps (a) and (b) with fingers 2. Pull the filter down. 3. Pull the filter out. To replace the filter reverse the process. An accumulation of dust will affect the performance of the appliance and cause excessive electricity consumption. The structure of the appliance permits the cleaning of the rear zone close to the wall, using a vacuum cleaner. 1. Remove the plinth (1), then the ventilation grid (2); 2. Carefully pull the air deflector out (3), checking that there is no water left from the defrosting process. 2
