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 5 (click to view)
2. DISC REMOVAL PROCEDURE (at POWER OFF)
1) Insert a tapering driver into the aperture of the unit bottom, and move the lever of chuck cam in the direction of the arrow A. (See Fig. 1) 2) Draw out the tray in the direction of the arrow B, and remove a disc. (See Fig. 1)
Lever of chuck cam Aperture
3.
1) 2) 3) 4)
HOW TO SERVICE MB-86 BOARD
Remove the case from the set. (Refer to 2-1) Remove the mechanism deck. (Refer to 2-6) Remove the MB-86 board. (Refer to 2-9) Set the CK-MD board as shown in Fig. 2.
