Adjustment #1: Magazine Motor Reversing Switch (w/video)

Reversing Switch Adjustment

The Reversing Switch is a 4-pole, double-throw, snap-acting switch which, A) reverses the polarity of the Magazine Motor armature (which changes motor rotation), and B) switches the Indexing and Cancel Solenoid circuits between the odd and even selections.

There are two adjustable Trip Brackets mounted to the front of the Record Magazine carousel (circled in yellow), and these brackets need to strike the Reversing Switch Trip Lever at the proper time so that the Magazine Motor reverses direction when safe to do so.

Note that there are two "tracks", or "grooves" on the front of the Record Magazine Carousel as well (an inner, and an outer), and a device called a Track Roller rides inside of these "tracks" (hard to highlight here, so please see video). At the end of each individual "track" there is a ramp that shifts the Track Roller from the Inner track to the Outer (and vice versa), along with a Cam Track Spring (a piece of sprung steel) that acts like a one way gate and prevents the Track Roller from going back to it's previous track

If you look close enough will see that Trip Brackets are located near these ramps. This is not by coincidence, as the Track Roller is mounted on a lever (the Gripper Connecting Rod) which "trips" the Reversing Switch Trip Lever!

Here is the Track Roller, currently riding in the Inner track:

And here is the Gripper Connecting Rod, as seen from the front (Gripper Actuator removed for clarity):

What happens is this: When the Track Roller is in the Inner track, the Magazine Motor rotates the Record Magazine in a CW direction, and when the Track Roller is in the Outer track, the Magazine Motor rotates the Record Magazine in a CCW direction.

Location of the Trip Brackets is critical, as they control the "timing" of when the Magazine Motor reverses. If it reverses direction before the Track Roller changes tracks, the mechanism could "bottom out" in the wrong track, resulting in bent and/or damaged equipment.

Here is a picture of one of the Trip Brackets that is just about to hit the Trip Lever (seen in the "up"position) as it rotates downward:

As seen in the video, I have obtained the best results by adjusting the Trip Brackets so that they hit the Trip Lever at the same time the Track Roller hits the piece of sprung steel at the end of each track. 

Link to video: https://youtu.be/YYkACJEBz1I