I am working through several Kodak 35mm slide projectors getting them tuned up. There are various models and vintages on hand. Currently, I am working on an Ektagraphic III Model 5600 and I need some information that the Kodak Ektagraphic Service Manual does not discuss (unless I missed it). The problem is the focusing motor. The motor requires 8.5 volts, and the Service Manual mentions to verify this, but it does not seem to discuss what to check if NO voltage is found... which is my problem. The focusing solenoid actuates when the focus button is cycled from the remote cord, but no voltage is read at the motor terminals. The focusing motor does not function at this point. Any suggestions?