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´s for your help, I already recived these manual from you
Text excerpt from page 9 (click to view)
MAINTENANCE AND CLEANING
Before any maintenance or cleaning work is carried out, DISCONNECT the appliance from the ELECTRICITY supply.
Changing the light bulb
Should the interior light fail to work, first switch off the appliance and disconnect from the electricity supply, then replace the bulb as follows;
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.
External cleaning
Wash the outer cabinet with warm soapy water. Do NOT use abrasive products. An accumulation of dust will affect the performance of the appliance and cause excessive electricity consumption. Once or twice a year dust the condenser (black grill) and the compressor at the back of the appliance, with a brush or vacuum cleaner, see figure.
D731
Unscrew the light cover and then pull it outward by pressing as shown in the figure. Unscrew the bulb and replace it with a new 15 watt bulb (available from your nearest Service Force Centre). Replace the light cover by sliding it into its original position and replacing the screw.
Defrosting
Refrigerator The refrigerator automatically defrosts every time the compressor stops. The water is discharged, via the pipe, into a tray located at the back of the appliance above the compressor, where it evaporates.
CONDENSER
DEFROST TRAY
COMPRESSOR D273
When the appliance is not in use
When the appliance is not in use for long periods, disconnect from the electricity supply, empty all foods and clean the appliance, leaving the doors ajar to prevent unpleasant smells.
D037
Important To avoid defrost water overflowing into the fridge, periodically clean the water discharge hole in the centre of the V shaped drip collector at the back of the refrigerator compartment behind the fruit and vegetable drawer. Use the defrost cleaner provided which you will find already inserted into the discharge hole. Remember to wash the defrost cleaner in hot soapy water at regular intervals. Dry throughly before replacing. 9
