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.
Actually, I was looking for this information for 3 years!...now thanks to you, the manual is on my hands and of great help, cause I understand now where I was doing wrong connections and wires...excellent, I'll be back to you if in need, thank you.
Text excerpt from page 7 (click to view)
CLEANING THE HOSE AND NOZZLE
The vacuum cleaner stops automatically if the nozzle, tube or hose becomes blocked, or the filter and dustbag are blocked. Disconnect from the mains and allow the vacuum cleaner to cool down for approximately 20-30 minutes. Clear whatever is causing the blockage and/or replace dirty filters or the full dustbag. Then restart the vacuum cleaner. Tubes and hose 1 Use a cleaning strip or similiar to clear the tubes and hose. 2 It is sometimes possible to clear the hose by "massaging" it. However, be careful in case the obstruction has been caused by glass or needles caught inside the hose. Note: The warranty does not cover any damage to hoses caused by cleaning them. Cleaning the floor nozzle 3 To avoid reduction in suction power, frequently clean the dual purpose floor nozzle. The easiest way to clean it is by using the hose handle.
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