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 22 (click to view)
Apply covers (B) into the relevant holes.
B
D726
Separate parts A, B, C, D as shown in the figure
A
B
C D
50mm
PR266
Place guide (A) on the inside part of the furniture door, in the upper and lower positions as shown in the figure and mark the position of external holes. Having drilled the holes, fix the guide with the screws supplied.