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 18 (click to view)
Water inlet
There should be a COLD WATER tap near the washing machine with a screwing on connection pipe of 3/4 gas for the water supply, a sink, a wash basin or a drainage system in the wall. Previously check if: s it is not a hot water tap s the running water is clean. If not, run off a reasonable amount of water to flush out any debris that may have collected in the pipes. Have the permanent drainage system in the wall checked by a plumber. Place the enclosed rubber joint, delivered in a plastic bag together with the appliance (A), at the very end of the inlet hose and carefully screw the pipe to the tap taking care not to damage the screwdrive and fix the nut well on to the end in order to avoid leaking.
AL013
A
If necessary turn the hose adequately by unscrewing the nut at the rear of the appliance. Now tighten the nut anew to avoid leaks. (Open the tap and assure that it does not leak and close it again.)
P0021
Water drainage
If you intend the drain hose from the machine to empty into a sink, make sure that the sink is empty and that the plug hole is not blocked. Place the drain hose in the sink with the aid of the bent piece delivered separately. The bent piece has to be entered into the tube´s mouth in order to assure the support.. Aforesaid piece allows the hose to be fixed to the wall by means of an opening on the upper part and that way the hose does not move and its falling is avoided If the machine is permanently plumbed in, hook the end of the hose into a standpipe installed for the purpose. The standpipe must have an internal diameter of at least 40 mm in order that there is an air gap between the drain hose and the standpipe. Make sure, that it is designed in such a way, that the end of the drain hose cannot be covered with water.